Given,
Time taken by motorboat to going 200 miles upstream is 5 hours.
Time taken by motorboat to going 200 miles downstream is 4 hours.
At upstream,
The speed of boat is offosed by the speed of current.
At downstream,
The speed of boat is incraesed by the speed of current.
Consider,
The speed of boat is b.
The speed of current is c.
The speed is calculated as,
[tex]\begin{gathered} \text{Speed=}\frac{dis\tan ce}{time} \\ b-c=\frac{200}{5} \\ b-c=40 \\ b=c+40\ldots\text{.}\mathrm{}(1) \end{gathered}[/tex]Similarly,
[tex]\begin{gathered} \text{Speed=}\frac{dis\tan ce}{time} \\ b+c=\frac{200}{4} \\ b+c=50 \\ b=50-c\ldots\text{.}(2) \end{gathered}[/tex]Substituting the value of b from equation (2) then,
[tex]\begin{gathered} c+40=50-c \\ 2c=10 \\ c=5\text{ mile per hour} \end{gathered}[/tex]Substituting the value of c in equation (1) then,
[tex]\begin{gathered} b=5+40 \\ b=45\text{ mile per hour} \end{gathered}[/tex]Hence, the speed of boat is 45 mile per hour and speed of current is 5 mile per hour.
Which of the pictures below shows the graph of the inequality y
Firstly, less than and greater than signs are represented with a chained line on the graph. Therefore,
[tex]\begin{gathered} yThe graph is B. Picture DWhich expressions are equal to 11 x 10³2 Select all that apply.
Answer:
Option B,A,C is correct
Explanation:
You're missing some info. But I did this question before.
A. 11x100
B. 11,000
C. 11x10x10x10
THESE ARE ALL CORRECT SINCE THEY ALL EQUAL 11000 .
43 divided by 516
Please help
Answer:
IT IS 12
Step-by-step explanation:
Kayle is playing a game. She starts the game with 500 points. Her first 5 turns and the change in points are shown in the table.
How many points does Kayle have after her 5th turn?
Responses
−550 points
negative 550 points
−150 points
negative 150 points
350 points
350 points
1,150 points
Kayle have 1300 points after her 5th turn as the final score is sum of all score in the 5 rounds that come up to 1300.
What is addition?One of the four fundamental operations in mathematics is addition, along with subtraction, multiplication, and division. The total amount or sum of the two whole numbers is obtained by adding them. Combining things and counting them as one big group is done through addition. In math, addition is the process of adding two or more numbers together. Addends are the numbers that are added, and the sum refers to the outcome of the operation. When you add two or more numbers together, you get the sum of the numbers. The sum is the outcome of adding two or more numbers.
Here,
The final score will be the sum of all scores after 5th turn.
initial score=500
first round=−550 points
second round=−150 points
third round=350 points
fourth round=1,150 points
500+-550+-150+350+1150
=500-550-150+350+1150
=1300 points
After her fifth turn, Kayle had 1300 points because the total of her five rounds' scores added up to 1300.
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Here is a graph representing the relationship in question 3. Interpret the set of coordinates (30, 7).
children's tickets sold
60
55
50
45
40
30
25
20
5
(30, 7)
10 15 20 25 30 35 40
adult tickets sold
O 7 children's tickets and 30 adult tickets were sold
O 30 children's tickets and 7 adult tickets were sold
O When 7 tickets are sold, $30 is collected
O (30, 7) is not a possible solution
The correct option 2 that is 30 children's tickets and 7 adult tickets were sold.
Given : A graph which has adult tickets in the x - axis
and children tickets in the y - axis
The marked point is ( 30, 7 )
this means that the value of x axis 30 and y axis is 7
thus from the above information it is clear that there are 30 children's tickets and 7 adult tickets were sold.
So the correct option is Option 2
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find the product of (4x +1)(4x -1)
(4x +1)(4x -1)
Apply the distributive property:
4x (4x ) + 4x (-1) + 1 (4x) + 1 (-1)
16x^2 -4x + 4x -1
Combine like terms:
16x^2-1
Answer:
16x² - 1
Step-by-step explanation:
(4x + 1)(4x - 1)
each term in the second factor is multiplied by each term in the first factor , that is
4x(4x - 1) + 1(4x - 1) ← distribute parenthesis
= 16x² - 4x + 4x - 1 ← collect like terms
= 16x² - 1
Challenging. A cylinder has a diameter of 12 inches at its base. The height of the cylinder is 1.25 feet. What is the volume of the cylinder in cubic inches? Use 3.14 for 7 and round your answer to the nearest cubic inch.
Diameter of cylinder = 12 inches
radius of cylinder (r) = 1/2 x diameter = 6 inches
Height of cylinder (h) = 1.25 feet
We can convert feet to inches using the relation: 1 foot = 12 inches
So, 1.25 feet = 12 x 1.25 inches
=> 15 inches
The volume of the cylinder is given by:
[tex]V\text{ = }\pi r^2\text{ h}[/tex]Upon substituting the values of r and h
[tex]\begin{gathered} V\text{ = 3.14 x 6 x 6 x 15} \\ \\ V=\text{ }1695.6\text{ cubic inches} \\ V=1696inches^3 \end{gathered}[/tex]
find the slopes of the given points -5,-1 and -5,-10
The slope (m) of the given points is -9.
What do we mean by slopes?A line's steepness can be determined by looking at its slope. In mathematics, the slope is determined by dividing the change in y by the change in x, or "rise over run."Determine the coordinates of two points along the line that you choose. Find the difference between these two points' y-coordinates (rise). Find the difference between these two points' x-coordinates (run). Divide the difference in x-coordinates (rise/run or slope) by the difference in y-coordinates.So, the slope will be:
Slope formula: m = y₂ - y₁/x₂ - x₁Now, calculate as follows:
m = y₂ - y₁/x₂ - x₁m = -10 - (-1)/-5 - (-5)m = -10+ 1/-5 + 5m = -9/0m = -9Therefore, the slope (m) of the given points is -9.
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is y=5^w an exponential function if so state the initial value and the base if not then which type of function is it
By using the property of exponential function, the results obtained are
Base of the function is 5.
Initial value of the function is close to zero.
What are exponent?
Exponent tells us how many times a number is multiplied by itself.
For example : In [tex]2^4 = 2\times 2\times 2\times 2[/tex]
Here, 2 is multiplied by itself 4 times.
If [tex]a^m = a \times a\times a....\times a[/tex] (m times), a is the base and m is the index.
Here,
[tex]y = 5^w[/tex] is an exponential function.
The base of the function is 5.
As [tex]x \rightarrow -\infty[/tex], the function tends to 0
So the initial value of the function is close to zero.
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Stan's cookie recipe makes 242424 cookies and calls for exactly 384384384 sprinkles. he is wondering how many sprinkles (p)(p)left parenthesis, p, right parenthesis he will need to make 606060 cookies. he assumes each cookie will have the same number of sprinkles.
Using tha basic multiplication and division, Stan will need 960 sprinkles to make 60 cookies.
What is algebra?In the branch of mathematics known as algebra, a situation is described using mathematical symbols, variables, and arithmetic operations like addition, subtraction, multiplication, and division that produce meaningful mathematical expressions.
The sprinkles needed for 1 cookie are given by
24 cookies need sprinkles = 384
1 cookie will need sprinkles = 384 ÷ 24
= 16 sprinkles
Now, sprinkles needed for 60 cookies are given by
1 cookie needs sprinkles = 16
60 cookies will need sprinkles = 16 × 60
= 960 sprinkles
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The correct question is:
"Stan's cookie recipe makes 24 cookies and calls for exactly 384 sprinkles. He is wondering how many sprinkles (p) he will need to make 60 cookies. He assumes each cookie will have the same number of sprinkles. How many sprinkles does Stan need to make 60 cookies?"
Jermaine bought a pickleball paddle that cost $65.90. he also bought four pickle balls. he spent $79.90. part a: which equation can you use to find p, the cost of each pickle ball? part b: what was the cost of each pickle ball?
Answer:
a. 65.90 + 4p = 79.90
4p = 14.00
b. p = 3.50
Please help me!
What is the probability distribution table for this bar graph?
A. Pink 0.3 Green 0.2 Yellow 0.05 Blue 0.45
B. Pink 0.6 Green 0.2 Yellow 0.4 Blue 0.9
C. Pink 0.25 Green 0.25 Yellow 0.25 Blue 0.25
D. Pink 6 Green 4 Yellow 1 Blue 9
Answer:
A. Pink 0.3 Green 0.2 Yellow 0.05 Blue 0.45
Step-by-step explanation:
Adding up the total number of values:
[tex]6+4+1+9=20[/tex]
Then, finding the probability of each color:
Pink: [tex]6/20=0.30[/tex]
Green: [tex]4/20 = 0.20[/tex]
Yellow: [tex]1/20=0.05[/tex]
Blue: [tex]9/20=0.45[/tex]
help meeeeeeeeeeeeeee pleaseeeeeee
Answer: 10.8 seconds
Step-by-step explanation:
[tex]-16t^2 +170t+40=10\\\\16t^2 -170t-30=0\\ \\ t=\frac{-(-170) \pm \sqrt{(-170)^2 -4(16)(-30)}}{2(16)}\\\\t \approx 10.8 \text{ } (t > 0)[/tex]
Which of the following lines goes through the point -3,4 and is perpendicular to y= 3/2x+6?
The slope of equation [tex]y=\frac{3}{2}x+6[/tex] is [tex]m=\frac{3}{2}[/tex].
The equation of line perpendicular to another line in point slope form:
[tex]y-y_1 = -\frac{1}{m}(x-x_1)[/tex]
Substitute [tex]m=\frac{3}{2}[/tex] and the point [tex](-3,4)[/tex] into the above equation form:
[tex]y-4=-\frac{1}{3/2}(x-(-3))\\y-4=-\frac{2}{3}(x+3)\\-----------\times 3\\3y-12=-2(x+3)\\3y-12=-2x-6\\2x+3y-12+6=0\\2x+3y-6=0[/tex]
Hence the equation of the line is [tex]2x+3y-6=0[/tex].
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Trees in the backyard need soil around their roots. ?Chris buys 4 pounds of soil. How many ounces of soil does he have for the trees?
Answer:
64 ounces.
Step-by-step explanation:
You multiply the mass amount by 16 since there are 16 ounces in 1 pound. 16*4=64.
PLEASE HELP PLEASE HELP!!!!
You run m miles on Monday, the same amount on Tuesday, and 3 miles on Wednesday. Write an expression in the simplest form that represents the total amount in each situation.
(please show work)
The mean, or average, is equal to the sum of all the miles divided by the number of terms you added together. We have 4 terms that will be added, but are missing one term. We will solve for the missing term by setting up an equation for the average and solving for x, the number of miles you must run on Thursday.
3 = (2 + 3 + 4 + x) / 4
12 = 2 + 3 + 4 + x
12 = 9 + x
x = 3 miles
If a television screen is 20 inches wide
and 15 inches high, what is the size of the
TV?
Diagonal problems
25 is the diagonal of tv with the given dimensions .
What is diagonal ?In geometry, a diagonal is a line segment connecting two vertices of a polygon or polyhedron that are not on the same edge. A diagonal is an informal term for any sloping line.
CalculationThe length of diagonal is the length of the hypotenuse of a right angled triangle for which the lengths of the sides making right angle are 20" and 15", hence is
=
√20^2 + 15^2
=√400 + 225
= √625
= 25
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Review Josh’s steps for solving the equation :
[tex]x^2-6x-7=0\\ \\ x^2-6x=7\\\\x^2-6x+9=7+9\\\\(x-3)^2=16\\\\x-3=6\\x=19\\\\x-3=-16\\x=-13[/tex]
a) State what method he was using to solve the equation.
b) Explain where in his work he had a mistake.
c) Show how to fix his mistake and what the correct answer should be.
The method Josh was using to solve the equation is completing the square method.
Josh made mistake where he was supposed to find the square root of both sides.Josh should fix his mistake by finding the the square root of both sides and the correct answer should be x = 1 or -7How to solve quadratic equation?x² - 6x -7 = 0
a = 1
b = -6
c = -7
x² - 6x = 7
Find the half of b and square it, then add to both sides
x² - 6x + 9 = 7 + 9
factorize the expression on the right
(x - 3)² = 16
Find the square root of both sides(x - 3) = √16
x - 3 = ± 4
x = 4 - 3 or x = -4 - 3
x = 1 or -7
Therefore, the correct answer to the quadratic equation using completing the square method is x = 1 or -7
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can someone please help me with this?
Answer:
3=3x+3
4=2x+8
Step-by-step explanation:
Solve y=9/5x +5
Find the slope
Answer:
m=9/5
Step-by-step explanation:
Create an equation of a line in point-slope form. Be sure to identify all parts of the equation before writing the equation.
The equation of line in point slope form created is
[tex]y - 3 = 1(x - 2)\\[/tex]
What is equation of line in point slope form?
The most general form of equation of line in point slope form is given by
[tex]y - y_1 = m(x - x_1)[/tex]
Where m is the slope of the line and ([tex]x_1, y_1[/tex]) is the coordinate of the point through which the line passes
Slope of a line is the tangent of the angle that the line makes with the positive direction of x axis.
If [tex]\theta[/tex] is the angle that the line makes with the positive direction of x axis, then slope (m) is given by
m = [tex]tan\theta[/tex]
Here
Let the line passes through ( 2, 3) and (4, 5)
Slope = [tex]\frac{5-3}{4-2}[/tex]
= [tex]\frac{2}{2}[/tex]
= [tex]1[/tex]
Equation of line in point slope form
[tex]y - 3 = 1(x - 2)\\[/tex]
This is equation of line in point slope form.
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Solve the following equation for A
4 = gA
What single transformation was applied to
quadrilateral A to get quadrilateral B?
A.translation
B.rotation
C. Reflection
D.dilation
The transformation that is applied to the quadrilateral A to get quadrilateral B is translation.
We can see that the quadrialteral A and B look exactly the same.
It is just that they are being moved from one place to another.
So. it cannot be a rotation or a reflection.
Also, the size of both the quadrilaterals are same.
So, it can also not be a dilation.
So, the transformation that is applied is:
Translation.
Therefore, the transformation that is applied to the quadrilateral A to get quadrilateral B is translation.
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Find the number that makes the ratio equivalent to 1:2 5:_
Answer:
10
Step-by-step explanation:
1x5=5
2x5=10
which function is the inverse of f(x)= arccsc x
Let's begin by identifying key information given to us:
[tex]\begin{gathered} f(x)=arccsc(x)_{} \\ f\mleft(x\mright)=y \\ \Rightarrow y=arccsc(x) \\ We\text{ will proceed to i}nterchange\text{ }the\text{ }variables,\text{ we have:} \\ x=arccsc(y) \\ We\text{ will make ''y'' the subject of the formula, we have:} \\ y=\frac{x}{arccsc}\Rightarrow y=csc(x) \\ y=csc(x) \\ y=f^{-1}\mleft(x\mright) \\ \Rightarrow f^{-1}(x)=csc(x) \\ \\ \therefore f^{-1}(x)=csc(x) \end{gathered}[/tex]Someone please help me out I rlly need help
The equation that could be used to solve for x is (3x-1) = 140 and the value of x is 47°.
According to the question,
We have the following information:
We have two lines that are intersecting each other at a point. The angles made on this point are given.
Now, we know that these two angles are vertically opposite angles. And we also know that vertically opposite angles are equal.
So, we will have the following equation:
3x-1 = 140
Now, we can easily find the value of x from this equation:
Adding 1 on both sides of the equation:
3x = 140+1
3x = 141
Dividing by 3 on both sides:
x = 141/3
x = 47°
Hence, the equation that could be used to solve for x is (3x-1) = 140 and the value of x is 47°.
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Square root of 4n^2+4n^2
PLEASE HELP
Giving brainliest
Answer: 8n^2
Step-by-step explanation:
I did test and got 100
the treasures location has an absolute value between 1 1/2 and 9 show on the number line where the treasure could be
The location is between values of 1 1/2 and 9.
The values being absolute it means that they have no sign, i.e. they can be either positive or negative.
Since the values are both positive, you have to draw a positive number line.
The purple line indicates the possible locations over the number line.
Raj ahs put a soup intot he freezer to cool down. The soups temperature started at 170 °F and decreased at a rate of 30 °F per hour. Let h represent the number of hours the soup stays in the freezer.
Actual question:
Raj wants the soup to cool down so that its temperature, when he takes it out of the freezer, is at most 74 °F. Write an inequality in terms of that represents all times when the soup is cool enough for Raj to take it out of the freezer.
The inequality in terms that represents all times when the soup is cool enough for Raj to take it out of the freezer is:
170 - 30h ≤ 74
Given, Raj has put a soup intot he freezer to cool down.
The soups temperature started at 170 °F and decreased at a rate of 30 °F per hour.
Let h represent the number of hours the soup stays in the freezer.
Raj wants the soup to cool down so that its temperature, when he takes it out of the freezer, is at most 74 °F.
we are asked to determine an inequality in terms of that represents all times when the soup is cool enough for Raj to take it out of the freezer.
⇒ 170 - 30h ≤ 74
⇒ 170 - 74 ≤ 30h
⇒ h ≥ 3.2
Hence we get the required inequality form.
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a bag of 13 marbles contains 5 marbles with red on them, 6 with blue on them, 7 with green on them and 5 red and green on them....... I'll take a picture of the rest of the question
We have to calculate the probability that we choose a marble that has either red or green on it.
We have a total of 13 marbles.
We can draw a Venn diagram to look at the green and red marbles:
We can see in the diagram that is expected to all the marbles that have red on it to have also green, because they are not mutually exclusive.
Then, we can calculate the probabilities as:
[tex]\begin{gathered} P(G\cup R)=P(G)+P(R)-P(G\cap R) \\ P(G\cup R)=\frac{7}{13}+\frac{5}{13}-\frac{5}{13}=\frac{7}{13} \end{gathered}[/tex]NOTE: If we write the exact color of each marble we will get:
1) 6 blue marbles
2) 2 only green marbles, as 5 of the 7 marbles that have green are "red and green" marbles.
3) 0 only red marbles: all 5 of the marbles that have red are "red and green"marbles.
4) 5 red and green marbles.
Then, if we add, we get 6 + 2 + 5 = 13 marbles.
The marbles that have red or green are: 2 green and 5 red and green, so there are 7 marbles that have red or green.
Then, the probability is equal to number of successful events / total events = 7/13.
It is the same result as the previous calculation.
Answer: the probability is 7/13.