What concentration of mixture would need to be added to protect the cars engine from the coolant boiling away at 230 F
Answers
The mixture should be at a concentration of 65.5% to protect the cars from the coolant boiling away at 230°F .
The given table has the concentration percentages and the boiling points of the antifreeze.
So the coolant boils away at 230F, so we need to find the concertation whose boiling point is higher than 230F .
From the table it is evident that the boiling point of 236 is good to protect the coolant as it is higher and closest to the given temperature.
Corresponding to the temperature we have , the percentage at 65.5%.
As 236F > 230F , so it is evident that we need the concentration of 65.5%.
1. a break will be needed for the x axis.
2. The graph of the table is attached below.
the red line indicates 230F, so the value above it is the required data.
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Related Questions
can you please solve this practice problem for me I need assistance C. -1/2 and D. 1/2
Answers
We are going to select the points when x = 0 and x = 2.
Observing the graph we see that when x = 0, then y = 1 - (0,1)
when x = 2, then y = 2 - (2, 2)
Now we have two points:
(x₁, y₁) = (0, 1)
(x₂, y₂) = (2, 2)
Step 2: change of variablesWe are going to find how much the variables change from point 1 to point 2
Change of x:
Δx = x₂ - x₁ = 2 - 0 = 2
Δx = 2
Change of y:
Δy = y₂ - y₁ = 2 - 1 = 1
Δy = 1
Step 3: slopeThe slope, m, is the division of the two found changes:
m = Δy/Δx = 1/2
Answer: D. 1/2Points that lie on the same line are called:A. non-collinear and non-coplanarB. opposite raysC. coplanar and non-collinearD. collinear and coplanar
Answers
When two points lie on the same line are called collinear. When they lie on the same plane they are called coplanar.
Points that lie on the same plane are not necessarily collinear.
When points are collinear, they lie on the same plane. Then when points are collinear they are necessarily coplanar. But when they are coplanar they are not necessarily colinear.
This means that points that lie on the same line are collinear and coplanar too.
ANSWER: DNeed help with this question please!
Answers
Answer: the picture
Step-by-step explanation:
One-sixth of the fourth graders and one-third of the fifth graders miss school on Friday. The absentee sheet for Friday shows the names of 9 fourth graders and 16 fifth graders. How many fourth and fifth graders are enrolled in the school?
Answers
Answer:
There are 54 4th graders.
There are 48 5th graders.
Step-by-step explanation:
1/6 of the 4th graders is 9 students.
1/6 x = 9
x = 9 × 6
x = 54
There are 54 4th graders.
1/3 of the 5th graders is 16 students.
1/3 x = 16
x = 3 × 16
x = 48
There are 48 5th graders.
There are 54 Fourth grader and 48 Fifth graders were enrolled in the school.
What is Algebra?A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.
Variables are the name given to these symbols because they lack set values.
In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.
Given:
let the number of fourth graders be x.
and, let the number of fifth graders be y.
As, One-sixth of the fourth graders is 9.
and, one-third of the fifth graders is 16.
Then, 1/6 x = 9
x= 54
and, 1/3 y= 16
y= 48
Hence, there are 54 Fourth grader and 48 Fifth graders were enrolled in the school.
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as shown above a classic deck of card is made up of 52 cards suppose one card is selected at random and calculate the following probability
Answers
Given a classic deck of cards made up of 52 cards
Made up of 13 spades, hearts, diamonds and clubs each,
The formula of Probabaility is given below as,
[tex]\text{Probabilty}=\frac{\operatorname{Re}quired\text{ outcome}}{Possible\text{ outcome}}[/tex]Where the Possible outcome = 52
The probability that a 6 of diamonds is selected is,
[tex]\begin{gathered} \text{required outcome = 1} \\ \text{Probability of a 6 of diamonds=}\frac{1}{52} \end{gathered}[/tex]Probability that a 6 of diamonds is selected is 1/52
The probability that a heart or a diamond is selected,
[tex]\begin{gathered} Probabilty\text{ of a heart P}(H)\text{=}\frac{13}{52} \\ \text{Probability of a diamond=}\frac{13}{52} \\ \text{Probability of a heart or a diamond=}\frac{13}{52}+\frac{13}{52}=\frac{1}{4}+\frac{1}{4}=\frac{1}{2} \end{gathered}[/tex]Probability that a heart or a diamond is selected is 1/2
Probability that a number smaller than 4 (counting the ace as 1) is selected is,
[tex]\begin{gathered} \text{Probability of picking a ace=}\frac{4}{52} \\ \text{Probability of picking a 2=}\frac{4}{52} \\ \text{Probability of picking a 3=}\frac{4}{52} \\ \text{Probability of picking a number smaller than 4=}\frac{4}{52}+\frac{4}{52}+\frac{4}{52}=\frac{3}{13} \end{gathered}[/tex]Probability that a number smaller than 4 (counting the ace as 1) is selected is 3/13
how much popcorn would each person get if two shared a half a bag of popcorn equally
Answers
Half bag = 1/2 bag
Number of persons = 2
Then divide
(1/2 bag)÷2 = 1/4 bag
Each person will have 1/4 of a bag
The question: A box is a right rectangular prism with the dimensions 8 inches by 8 inches by 14 inches. What is the surface area of this box?
Answers
Given the length (l), the width (w), and the height (h) of the rectangular prism:
[tex]\begin{gathered} l=8in \\ w=8in \\ h=14in \end{gathered}[/tex]You need to use this formula for calculating the surface area of a rectangular prism, in order to find the surface area of the box:
[tex]SA=2wl+2hl+2hw[/tex]Where "l" is the length, "w" is the width, and "h" is the height of the rectangular prism.
Therefore, when you substitute the values into the formula and evaluate, you get:
[tex]\begin{gathered} SA=(2)(8in)(8in)+(2)(14in)(8in)+(2)(14in)(8in) \\ \\ SA=128in^2+224in^2+224in^2 \end{gathered}[/tex][tex]SA=576in^2[/tex]Hence, the answer is:
[tex]SA=576in^2[/tex]Answer:c 565
Step-by-step explanation:
a tunnel is in the shape of a parabola. The maximum height is 48 and it is 18 m wide at the base. What is the vertical clearance 3 m from the edge of the tunnel?
Answers
The vertical clearance 3 m from the edge of the tunnel at 19.1 m.
What is referred as the parabola?A parabola is just a U-shaped plane curve in which any point is an equal distance from both a fixed point (recognized as the focus) and a fixed straight line (known as the directrix).For the parabola's maximum height is 50 m, its formula is of the form.
y = ax² + 48
The vertex is located at in this equation (0,48).
Is for vertex to be the maximum of y, the constant a must be negative.
The parabola's base is 18 m wide.
As a result, the x-intercepts seem to be (9,0) and (-9,0).
Set x = 9 and y=0 to obtain
a(9²) + 48 = 0
81a = -48
a = -0.59
The equation of the parabola is
y = - 0.59x² + 48
At 21.32 m of the edge of the tunnel, x = 9 - 2 = 7 m.
Thus, the height of the tunnel (vertical clearance) at x = 7 m is
h = y(7)
= -0.59(7²) + 48
h = 19.09
h = 19.1 m
Thus, the vertical clearance 3 m from the edge of the tunnel at 19.1 m.
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How many square feet are there in 288 square inches (1 foot=12 inches)
Answers
Given:
1 foot = 12 inches
So, 288 square inches are:
[tex]288\text{ in}^2=288\text{ in}^2\times(\frac{1\text{ ft}}{12\text{ in}})^2[/tex]Solve:
[tex]288\text{ in}^2\times\frac{1^2\text{ ft}^2}{12^2\text{ in}^2}=288\text{ in}^2\times\frac{1\text{ ft}^2}{144\text{ in}^2}[/tex]Simplify:
[tex]2\text{ ft}^2[/tex]Answer: 2 square feet
01018Annual SalaryANNUAL SALARY VERSUSYEARS OF SERVICE$60,000$50,000$40,000$30,000$20,0005 10 15 20Years of ServiceIn the scatterplot above, each dot represents the annual salary and corresponding years of service for each ofthe 19 employees at Company X. How many of the employees have more than 10 years of service but anannual salary of less than $40,000 ?
Answers
To determine how many employees have more than 10 years of service we need to look for dots that are to the right of the "10" position on the horizontal axis. There are a total of 11 employees that fit that criterion. We now need to look for which of these 11 employees earn less than 40,000 per year, for that we have to find the number of dots below the line of 40,000 and to the right of 10 years of service. There are a total of 5 dots.
There are 5 employees with more than 10 years of service which earn less than $40,000.
Sam and Sophia participates in a dice game. Sophia rolls one die. She gets $2 if 5 turns up. She gets $3 if 6 turns up. She loses $10 if 2 turns up. She neither wins nor loses if any other face turns up. Is this game fair?The game is not fair and not favorable to player.The game is not fair, but favorable to player.The game is fair.The game is fair, but not favorable to player.
Answers
Hello there. To solve this question, we need to analyze the probabilities for each case and see if the game is fair or not and also favorable to the player.
Sophia rolls a dice. If 5 turns up, she gets $2; If 6 turns up, she gets $3; If 2 turns up, she loses $10; She neither wins nor loses if any other face turns up.
First, let's remember something that will be important: a dice only haves 6 faces.
As we can see, she is winning (getting money) if 2 out of 6 faces turns up (5 and 6), and is losing if 1 out of 6 faces turns up (2). She is neither winning or losing if 3 out of 6 faces turns up (1, 3, 4).
About the fairness of the game, there are only 1 case she loses and 2 cases she wins something. We could only say the game is fair if the amount of winning cases were equal to the amount of losing cases. The game is not fair.
About being favorable, we'll consider it being unfavorable just the case that she loses money. The first and third cases, in which she gets money or doesn't get or lose money are favorable to her.
Since only 1 out of 6 faces makes her lose, then the game is favorable to the player.
Final answer: The game is not fair, but favorable to the player.
Show fraction 15/4 on a number line
Answers
Given data:
The given number is a=15/4.
The given number can be written as,
[tex]\begin{gathered} a=\frac{15}{4} \\ =3.75 \end{gathered}[/tex]The numberr can be expression on the number line between 3 and 4 but it is more close to 4.
Corresponding Angles are congruent.Which angle corresponds with « 2?756 4.36.268 21152414.14 [?]A
Answers
Corresponding angles are a pair of equal angles that are found in the same relative positions of the intersection of a transversal and a pair of parallel lines.
Based on this definition, <2 is corresponding/congruent with <6
In the same vein, <3 = <7, <8 = <4, <5 = <1.
If the x intercept of a line is positive and the y intercept is negative does the line slant upward or downward?
Answers
ANSWER:
slant upward
STEP-BY-STEP EXPLANATION:
The line would slant upward to the right because if the y-intercept is negative, the line starts below the x-axis and if the x-intercept is positive, it means the line continues from below the x-axis and crosses to the right. right. from the origin (to the right of 0), which means that it is tilted up to the right.
We can rectify it in the following graph
Mai has proven that triangle WYZ is congruent to triangle WYX using the Side-Side-Side Triangle Congruence Theorem. Why can she now conclude that diagonal W
Answers
Mai can conclude that "XWYZ will be the rhombus when we connect WYZ and WYX as all the sides are equal. In a rhombus, the opposing sides are parallel. In a rhombus, the opposing angles are equal. Diagonals in a rhombus cut each other at right angles. A rhombus' angles are divided by diagonals."
What is rhombus?A quadrilateral with equal-length sides is a rhombus. The angles at the opposite vertex are equal, and the opposite sides are parallel. In a rhombus, the opposing sides are parallel. In a rhombus, the opposing angles are equal. Diagonals in a rhombus cut each other at right angles. A rhombus' angles are divided by diagonals.
What is diagonal?A diagonal in mathematics is a line that joins two solids or polygons whose vertices are not on the same edge. Generally speaking, a diagonal is a sloping or slanting line that joins the vertices of a shape. The term "diagonal" refers to lateral shapes with sides, edges, and corners. A diagonal is a line segment that joins two opposing polygonal vertices (or corners). In other words, a diagonal is a line segment that joins two polygonal vertices that are not adjacent to one another. It connects a polygon's vertices, excluding the figure's edges.
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I need help seeing how this works out because what I am doing is not right
Answers
We will have the following:
AB and CD related in terms of x and y will be:
[tex]\begin{gathered} AB=CD\Rightarrow x+y=2x-y-2 \\ \\ \Rightarrow2y=x-2\Rightarrow y=\frac{x}{2}-1 \end{gathered}[/tex]So, the equation that relates AB and CD is:
[tex]y=\frac{x}{2}-1[/tex]BC and DA in terms of x and y is:
[tex]\begin{gathered} BC=DA\Rightarrow x+2y=3x-3y+2 \\ \\ \Rightarrow5y=2x+2\Rightarrow y=\frac{2}{5}x+\frac{2}{5} \end{gathered}[/tex]So, the equation that relates BC and DA is:
[tex]y=\frac{2}{5}x+\frac{2}{5}[/tex]Now; we determine the values of x & y as follows:
[tex]\begin{gathered} \frac{x}{2}-1=\frac{2}{5}x+\frac{2}{5}\Rightarrow\frac{1}{10}x=\frac{7}{5} \\ \\ \Rightarrow x=14 \end{gathered}[/tex]Then:
[tex]y=\frac{(14)}{2}-1\Rightarrow y=6[/tex]So, the values are:
[tex]\begin{gathered} x=14 \\ \\ y=6 \end{gathered}[/tex]helpppppppppppppppppppp
Ben needs to graph the function f(x)=3(0.1)x. He creates a table of values, using integer values for x.
What does Ben's graph look like?
Drag a value or word to the boxes to correctly complete the statements.
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Ben's graph passes through the ordered pairs (−1,Response area), (0, Response area), and (2,Response area). The graph Response area left to right.
Answers
Answer:
is there a pitcher that comes with it ?
Step-by-step explanation:
Gillian works from 23 to 33 hours per week during the summer. She earns $12.50 per hour. Her friendEmily also has a job. Her pay for t hours each given is given by the function e(t) = 13t, where 18 st 3 28.Find the domain and range of each function. Then compare their hourly wages and the amount they earnper week.
Answers
The domain for g(t) is [23,33]
The domain for e(t) is [18,28]
The range for g(t) is [287.5,412.5]
The range for e(t) is [234,364]
A ball is dropped from a height of 18 feet.The function f(x) = 18(0.75)* gives theheight in feet of each bounce, where x isthe bounce number. What will be theheight of the third bounce to the nearesttenth of a foot?
Answers
The height of the third bounce to the nearest tenth of a foot is 7.6 ft
Explanation:The given function:
[tex]f(x)\text{ = }18\mleft(0.75\mright)^x[/tex]f(x) = height in feet of each bounce
x represent the bounce number
For the third bounce, x = 3
replacing x with 3:
[tex]\begin{gathered} f(x)=18(0.75)^3 \\ f(x)\text{ = 18(0.4219)} \end{gathered}[/tex][tex]\begin{gathered} f(x)\text{ = }7.5942 \\ To\text{ the nearest tenth of foot = 7.6 ft} \end{gathered}[/tex]The height of the third bounce to the nearest tenth of a foot is 7.6 ft
I need help on this problem getting the answers do you know what they are ??????????
Answers
• 16.
Common difeference:
Is the difference between consecutive numbers in an arithematic sequence
18 -20 = -2
16-18 = -2
14-16 = -2
Common difference = -2
• 17.
Explicit rule: Use the arithematic sequence formula
an = a1 +(n-1 ) d
Where:
a1 = first term = 20
d= common difference = -2
Replacing:
an = 20 + (n-1)-2
• 18.
Replace n by 11
an = 20 + (11-1 ) -2
an = 20 + (10)-2
an= 20 - 20
an = 0
Amount to be paid = 0 (zero)
Vanessa cycled from her home to the beach at a speed of 18 meters per second The distance between her home and the beach is 1,350 m. How long did she ta to cycle from her home to the beach? speed + distance=time
Answers
Vanessa took 75 sec time to cycle from her home to the beach
What is Speed?Speed is the time rate at which an object is moving along a path
Speed =Distance/time
Given,
Vanessa cycled from her home to the beach at a speed of 18 meters per second
Speed=18 m/s
The distance between her home and the beach is 1,350 m.
Distance=1,350 m
Now we need to find the time for Vanessa to cycle from her home to the beach
Time=?
We have formula of speed
speed=Distance/time
Time=Distance/speed
Time=1350/18
=75 sec
Hence Vanessa took 75 sec to cycle from her home to the beach
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Find the equation in slope-intercept form of the line passing through the points with the given coordinates.(5,2), (5,6)
Answers
Given,
The line is passing through the points (5,2), (5,6).
The standard equation of line passing through two points is,
[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]Substituting the values of coordinates then,
[tex]\begin{gathered} y-2_{}=\frac{6_{}-2_{}}{5_{}-5_{}}(x-5) \\ y-2=\frac{4_{}}{0_{}} \\ y-2=\infty\mleft(x-5\mright) \\ \frac{y-2}{\infty}=x-5 \\ 0=x-5 \\ x=5 \end{gathered}[/tex]Hence, the equation of line passing through point (5,2) and (5,6) is x=5.
Solve the equation. 1 / 3X - 9 = -12
Answers
x=-9
Explanation
[tex]\frac{1}{3}x-9=-12[/tex]
Step 1
add 9 in both sides
[tex]\begin{gathered} \frac{1}{3}x-9=-12 \\ \frac{1}{3}x-9+9=-12+9 \\ \frac{1}{3}x=-3 \end{gathered}[/tex]Step 2
multiply both sides by 3
[tex]\begin{gathered} \frac{1}{3}x=-3 \\ \frac{1}{3}x\cdot3=-3\cdot3 \\ x=-9 \end{gathered}[/tex]I hope this helps you
Answer:
x=-9
Step-by-step explanation:
Solve for X by simplifying both sides of the equation, then isolating the variable. So, pretty much the other dude is right.
solve quadratic by completing the squarex^2 + 12x + 23 = 0which form do i use and solve(x+___)^2(x - ___) ^2solutionx = ___
Answers
Quadratics are in the general form:
[tex]ax^2+bx+c[/tex]For completing the square, we use:
[tex](x+\frac{b}{2})^2=c+(\frac{b}{2})^2[/tex]Now, we have:
[tex]\begin{gathered} (x+\frac{12}{2})^2=-23+(\frac{12}{2})^2 \\ (x+6)^2=-23+(6)^2 \\ (x+6)^2=13 \end{gathered}[/tex]From here, we can easily solve for x with a little algebra. Shown below:
[tex]\begin{gathered} \sqrt[]{(x+6)^2}=\pm\sqrt[]{13} \\ x+6=\pm\sqrt[]{13} \\ x=-6\pm\sqrt[]{13} \end{gathered}[/tex]The answer(s) are:
[tex]\begin{gathered} x=-6+\sqrt[]{13} \\ x=-6-\sqrt[]{13} \end{gathered}[/tex]For further clarification
Form:
[tex](x+\frac{12}{2})^2=13[/tex]How many significant figures will there be in answer to the following problem?6.783 - 2.56 =
Answers
We need to make the substraction:
[tex]6.783-2.56[/tex]We do that as follows:
The number of significant figures in how many numbers we have in the answer, in this case the answer has 4 numbers, thus it has 4 significant figures.
What is the mode of the following numbers?8, 1, 2, 6, 1, 4
Answers
Three Turtles are racing . Abe the turtle's distance is represented by the green line, Benji the turtle's distance is represented by the red line, and Carter the turtle's distance is represented by the bule line. Use the graph to answer the following questions.
Answers
Using the graph we can see that Benji (the red line) goes 50 feet far, also by looking at the graph we see tht Carter (the blue line) takes 240 seconds to travel 80 feet.
If they are racing I would pick the one who takes less time to travel more distance, by the graph we see that Carter is faster than Benji and Abe.
xy12364468710 a. Construct a scatterplot. b. Is there a linear association, nonlinear association, or no association? c. Compute r. d. On the basis of the scatterplot and r, determine the strength of the association? Explain.
Answers
SOLUTION:
(a) From the given table, we are to construct a scatterplot.
(b) There is a strong linear association because all the points align themselves in a near perfect straight line.
(c) To Compute r;
(d) We are to determine the strength of the association;
Because r = 0.9934 which is very close to 1.0, so we conclude that the strength of the association is very strong.
Set up and solve a proportion for the following application problem. If 6 pounds of grass seed cover 366 square feet, how many pounds are neededfor 4392 square feet?am 24/7onlinepounds
Answers
We know that 6 pounds cover 366 square feet, then we have the ratio:
[tex]\frac{6}{366}[/tex]Let x be the amount we need to cover 4392 square feet, then we have the ratio:
[tex]\frac{x}{4392}[/tex]Since the ratios have to be equal we have the proportion:
[tex]\frac{x}{4392}=\frac{6}{366}[/tex]Solving for x we have:
[tex]\begin{gathered} \frac{x}{4392}=\frac{6}{366} \\ x=4392\cdot\frac{6}{366} \\ x=72 \end{gathered}[/tex]Therefore, 72 pounds are nedded for 4392 sq ft.
Question 3 of 10
Which of the following is equal to 7%?
O A. 17
OB. 17.3
O C. 73
OD. 17
Answers
Since the exponent of 7 is 1/3, when this is converted to radical expression, the denominator of the exponent becomes the root of the radical. Hence,
[tex]7^{\frac{1}{3}}\Leftrightarrow\sqrt[3]{7}[/tex]Therefore, 7^1/3 is equivalent to the cube root of 7. (Option A)