a. a grade that is 12 points lower than a grade of x can be represented as Options: x-12both x-12 and 12-x 12-x

A. A Grade That Is 12 Points Lower Than A Grade Of X Can Be Represented As Options: X-12both X-12 And

Answers

Answer 1

a. If a friend says his grade is 12 points lower than your grade, it means your grade is greater than his grade, if your grade is represented by x, then the grade of your friend can be found by subtracting 12 from your grade, this can be written as:

[tex]x-12[/tex]

b. If x represents your friend's grade instead of yours, then to find your grade you need to add 12 to his grade, it can be represented as:

[tex]\begin{gathered} x+12 \\ 12+x \end{gathered}[/tex]

The correct answers are B. and D.


Related Questions

Reflect (1,-4) Over the Y axis and over the X axis.

Answers

Answer

Check Explanation

Explanation

To reflect a point A (x, y) over the y-axis, the new coordinates become A' (-x, y)

For the point B(x, y) over the x-axis, the new coordinates become B'(x, -y)

So, reflecting the point (1, -4) over the y-axis, we have (-1, -4)

Reflecting the point (1, -4) over the x-axis, we have (1, 4)

Reflecting (1, -4) over both x-axis and then y-axis, we have (-1, 4)

Hope this Helps!!!

Prove a quadrilateral with vertices G(1,1), H(5,3) and J(0,3) is a rectangle

Answers

The quadrilateral is a rectangle because

1) GH is parallel and equal to JI

2) GJ is parallel and equal to HI

3) Angles at the vertices are perpendicular

takes Kim 11 hours to proof a chapter of Hawkes Learning SystemsIntroductory Algebra book and it takes Bethany 6 hours. How long would it take them working together? (Round your answer to two decimal places)

Answers

Answer

3.88 hours

Explanation:

If it takes Kim 11 hours to proof a chapter of Hawkes Learning Systems Introductory Algebra book, this shows that she will prove 1/11 of the chapter in 1 hour.

Similarly, if it took Bethany 6hrs to proof the same chapter, she will prove 1/6 of the chapter in 1hour

If x is the time take to read a chapter if the work together, the time it will take them working together is given as

[tex]\begin{gathered} \frac{1}{x}=\frac{1}{11}+\frac{1}{6} \\ \frac{1}{x}=\frac{6+11}{66} \\ \frac{1}{x}=\frac{17}{66} \end{gathered}[/tex]

Cross multiply

[tex]\begin{gathered} 17x=66\times1 \\ 17x=66 \\ x=\frac{66}{17}=3\frac{15}{17}=3.88hours \end{gathered}[/tex]

Hence the time it will take them to work together is 3.88 hours

there are 750 seats.the number of seats in a row is 5 less than the number of rows.how many seats are there in a row?

Answers

Given:

The total number of seats, T=750.

Let x be the number of seats in a row and y be the number of rows.

It is given that the number of seats in a row is 5 less than the number of rows.

Hence, the number of seats in a row can be expressed as,

[tex]x=y-5\text{ ---(a)}[/tex]

Now, expression for the total number of seats can be given by,

[tex]T=xy[/tex]

Plug in x=y-5 and T=750 in the above equation and simplify.

[tex]\begin{gathered} 750=(y-5)y \\ 750=y^2-5y \\ y^2-5y-750=0\text{ ---(1)} \end{gathered}[/tex]

The equation (1) is in the form of a quadratic equation of the form,

[tex]ay^2+by+c=0\text{ ---(2)}[/tex]

Comparing equations (1) and (2), a=1, b=-5 and c=-750.

Now, using discriminant method, the solution of y can be expressed as,

[tex]\begin{gathered} y=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \\ y=\frac{-(-5)\pm\sqrt[]{(-5)^2-4\times1\times(-750)}}{2\times1} \\ y=\frac{5\pm\sqrt[]{25+3000}}{2\times1}\text{ } \\ y=\frac{5\pm\sqrt[]{3025}}{2} \\ y=\frac{5\pm55}{2}\text{ } \\ y=\frac{5+55}{2}\text{ or y=}\frac{5-55}{2} \\ y=\frac{60}{2}\text{ or y=}-\frac{50}{2} \\ y=30\text{ or y=-25} \end{gathered}[/tex]

Since the number of rows cannot be negative, y=30.

Put y=30 in equation (a) to find x.

[tex]\begin{gathered} x=30-5 \\ x=25 \end{gathered}[/tex]

Therefore, the number of seats in a row is 25.

what fraction is equivalent to 2/2

Answers

Answer:

4/4,6/6 etc

Step-by-step explanation:

multiply both numerator and denominator with the same number

solve by factoring, by square roots, by completing the square, or using the quadratic formulaSolve for x in the equation belowX^2 −15x+54=0

Answers

STEP 1: Identify and Set up.

We have a quadratic equation and are asked to solve, i.e, solve for x. We approach this problem via the factoring method.

We look for two factors of the third term, c that add up to the coefficient of x, favtorise and solve.

STEP 2: Execute

[tex]\begin{gathered} x^2-15x+54=0 \\ \text{the factors are -6 and -9} \\ x^2-9x-6x+54=0 \\ Factorizing\text{ gives us:} \\ x(x-9)-6(x-9)=0 \\ (x-9)(x-6)=0 \\ x\text{ is either 9 or 6} \end{gathered}[/tex]

x = 9 and x = 6

You have a set of cards labeled one through ten. Event A is drawing an even card. Event B is drawing a seven or higher. What is the P(A∩B) ?

Answers

Hello!

First, let's write the information that we know and then each event:

[tex]Set=\mleft\{1,2,3,4,5,6,7,8,9,10\mright\}[/tex]

Event A is drawing an even card:[tex]A=\mleft\lbrace2,4,6,8,10\mright\rbrace[/tex]Event B is drawing a seven or higher:[tex]B=\mleft\lbrace7,8,9,10\mright\rbrace[/tex]

When we use the interception symbol (), it means that we want to know which numbers are part of both sets simultaneously.

Let's calculate it:

[tex]A\cap B=\mleft\lbrace8,10\mright\rbrace[/tex]

A group of people were given a personality test to determine if they were type a or type B. The results are shown in the table below:…Compare P(Male or Type B) with P(Male | Type B)

Answers

Given,

The data table of the gender and its type is shown in question tab.

Required

P(male or Type B)

P(Male| type B)

The value of P( male or Type B) is calculated as,

[tex]\begin{gathered} P\left(male\text{ }or\text{ }TypeB\right)\text{ =}\frac{65+38+12}{65+85+38+12} \\ =\frac{115}{200} \\ =\frac{57.5}{100} \\ =0.575 \end{gathered}[/tex]

The value of P(Male|Type B) is calculated as,

[tex]\begin{gathered} P(Male|Type\text{ B\rparen=}\frac{38}{50} \\ =\frac{76}{100} \\ =0.76 \end{gathered}[/tex]

Here, P( male or Type B) < P(Male|Type B) .

Hence, option (P( male or Type B) < P(Male|Type B) ) is correct.

In Exercises ***, find the value of x so that the function has the given value.4. f(x) = 6x; f(x) = -245. g(x) = -10x; g(x) = 15

Answers

We have to find the value of x, such that the function:

[tex]f(x)=6x[/tex]

takes the value -24. This means that such x has to satisfy:

[tex]\begin{gathered} f(x)=-24 \\ 6x=-24 \end{gathered}[/tex]

Now, we just clear out the variable x. We obtain:

[tex]\begin{gathered} x=-\frac{24}{6} \\ x=-4 \end{gathered}[/tex]

This means that the value x=-4 makes the function f to be -24.

Which fractions are equivalent to ?Select all that apply. 64 64 yi 764 8 1 4

Answers

We are given the following radical expression

[tex]\sqrt[3]{\frac{1}{64}}[/tex]

Let us simplify it using the properties of radicals.

The quotient property of radicals is given by

[tex]\sqrt[n]{\frac{x}{y}}=\frac{\sqrt[n]{x}}{\sqrt[n]{y}}[/tex]

Let us apply the above property

[tex]\sqrt[3]{\frac{1}{64}}=\frac{\sqrt[3]{1}}{\sqrt[3]{64}}[/tex]

Further simplifying the radical

[tex]\frac{\sqrt[3]{1}}{\sqrt[3]{64}}=\frac{1^{\frac{1}{3}}}{64^{\frac{1}{3}}}=\frac{1}{4}[/tex]

The cube root of 1 is 1 and the cube root of 64 is 4

Therefore, the correct options are

[tex]\begin{gathered} \frac{\sqrt[3]{1}}{\sqrt[3]{64}} \\ \frac{1}{4} \end{gathered}[/tex]

More people are purchasing food from farmers' markets around the country. As a consequence, a market researcher predicts that the number of farmers' markets will increase by 1.71.7% every six months. If there were 74997499 farmers' markets in 2019, how many will there be in 99 years?Given the exponential growth scenario above, answer the following questions:What is the initial value, P0P0 in this problem? What is the growth factor or growth rate (as a decimal value)? What is the nn value, or number of time periods? Question Help Question 1: Read 1

Answers

Step 1

Given;

[tex]\begin{gathered} Initial\text{ farmer market=P}_0=7499 \\ b=0.017 \\ n=number\text{ of time periods} \end{gathered}[/tex]

Step 2

The exponential function for the question is

[tex]\begin{gathered} P=P_0(1+b)^n \\ P=P_0(1+0.034)^n \\ P=P_0(1.017)^n \end{gathered}[/tex]

Step 3

The initial value in this problem is;

[tex]P_0=7499[/tex]

Step 4

The growth rate factor as a decimal will be;

[tex]1.017[/tex]

Step 5

What is the n value or a number of time periods?

[tex]n=18[/tex]

Step 6

How many will there be in 9 years

[tex]\begin{gathered} P=7499(1.017)^{18} \\ P=10157.35207 \\ P\approx10157\text{ farmers' markets} \end{gathered}[/tex]

On New Year's Eve, the probability of a person having a car accident is 0.08. The probability of a person driving while intoxicated is 0.28, and the probability of a person having a car accident while intoxicated is 0.04. What is the probability of a person driving while intoxicated or having a car accident ? A.0.15 B.0.16 C.0.18 D.0.32

Answers

Answer:

D. 0.32

Explanation:

The probability of a person driving while intoxicated or having a car accident can be calculated as:

[tex]P=P(\text{Intoxicated)}+P(\text{ Accident) - P(Intoxicated and Accident)}[/tex]

So, replacing P(Intoxicated) = 0.28, P(Accident) = 0.08 and P(Intoxicated and Accident) = 0.04, we get

[tex]\begin{gathered} P=0.28+0.08-0.04 \\ P=0.32 \end{gathered}[/tex]

Therefore, the answer is

D. 0.32

11. Mr. Garcia uses a cylindrical container to protect his diploma. The dimensions of the cylinder are shown in the diagram. IS cm ------ 10 cm Which measurement is closest to the total surface area of the container in square centimeters?

Answers

Given data:

The given figure of cylinder.

The total surface area of the cylinder is,

[tex]\begin{gathered} SA=2\pi r(r+h) \\ =2\pi\frac{d}{2}(\frac{d}{2}+h) \end{gathered}[/tex]

Substitute the given values in the above expression.

[tex]undefined[/tex]

A line has an x-intercept of 12 and a y-intercept of -4. What is the equation of theline?

Answers

A line has an x-intercept of 12 and a y-intercept of -4. What is the equation of the

line?

that means

we have the points

(12,0) and (0,-4)

Find the slope

m=(-4-0)/(0-12)

m=-4/-12

m=1/3

Find teh equation in slope intercept form

y=mx+b

we have

m=1/3

b=-4

therefore

y=(1/3)x-4

Using the cosine law to determine the measure of we could use _______:

Answers

Solution

- The Cosine law is given below as:

[tex]\begin{gathered} Given\text{ }\triangle ABC,\text{ with sides }a,b,c\text{ and angles }\angle A,\angle B,\angle C\text{ such that} \\ a\text{ is opposite }\angle A \\ b\text{ is opposite }\angle B \\ c\text{ is opposite }\angle C \\ \\ \text{ We have:} \\ a^2=b^2+c^2-2(bc)\cos\angle A \end{gathered}[/tex]

- We can make [tex]\begin{gathered} a^2=b^2+c^2-2bc\cos\angle A \\ \text{ Subtract }b^2\text{ and }c^2\text{ from both sides} \\ \\ a^2-b^2-c^2=-2bc\cos\angle A \\ \\ \text{ Divide both sides by }-2bc \\ \cos\angle A=\frac{a^2-b^2-c^2}{-2bc} \\ \text{ } \\ \text{ Take the cos inverse of both sides} \\ \\ \therefore\angle A=\cos^{-1}(\frac{a^2-b^2-c^2}{-2bc}) \end{gathered}[/tex]

Final Answer

The answer is

[tex]\operatorname{\angle}A=\cos^{-1}(\frac{a^{2}-b^{2}-c^{2}}{-2bc})\text{ \lparen OPTION C\rparen}[/tex]

A gallon of paint will cover 600 ft.² of wall space if I plan to paint a room his walls measure 1200 ft.² how many gallons of paint will I need

Answers

You would need 2 gallons of paint

Sam is collecting pennies. On the first day of the month, Sam is given 16 pennies Each day after than he gets 4 more pennies. Which of the following equations defines how many pennies he has after the nth day

Answers

ANSWER:

[tex]d_n=4n+16_{}[/tex]

STEP-BY-STEP EXPLANATION:

If n is the number of days that pass.

So each day Sam gets 4 more, which means that he would multiply the number of days by 4, before adding that number to the original number of pennies, which was 16.

Therefore, the equation would be:

[tex]d_n=4n+16_{}[/tex]

solutions to 2y-3x=5

Answers

The equation 2y - 3x = 5 has infinitely many solutions.

In this question, we have been given an equation 2y-3x=5

We need to solutions to given equation.

for x = -1,

2y -3(-1) = 5

y = 1

for x = 0,

2y - 3(0) = 5

y = 5/2

y = 2.5

for x = 1,

2y - 3(1) = 5

y = 4

In this way for any real value of x we can find infinitely many values of y.

Therefore, the equation 2y - 3x = 5 has infinitely many solutions.

Learn more about equation here:

https://brainly.com/question/649785

#SPJ1

convert to degrees minutes and seconds54.158°

Answers

[tex]Answer\colon54^o\text{ 9' 28.8''}[/tex]

Convert 54.158 degrees

Firstly, Use the whole number as degree

54 degree

to convert to minutes

(54.548 - 54) x 60

= 0.158 x 60

= 9 minutes

To convert to seconds

(54.158 - 54 - 9/60) x 3600

= (0.158 - 0.15) x 3600

= 0.008 x 3600

= 28.8 seconds

This can be written as

[tex]54^o\text{ 9' 28.8''}[/tex]

Which fraction has a value greater than 0.4? A 1/3 B 4/10 C 3/8 D 5/9

Answers

Answer:

D 5/9

Step-by-step explanation:

This fraction equates to over 0.5

Answer:

1/2, 5/8, 3/4

Step-by-step explanation:

1/2 is 0.5 5/8 is .625 and 3/4 is .75

Write an expression for the sequence of operations described below.multiply p by q, then multiply 10 by the resultDo not simplify any part of the expression.

Answers

Answer:

p x q x 10

Explanation:

First, we interpret the statement: multiply p by q

[tex]=p\times q[/tex]

The result is: p x q

So if we then multiply 10 by the result, we have:

[tex]=p\times q\times10[/tex]

This is the required expression.

Question 2: 14 ptsOut of the 10,000 people who took their driving test for the first time, it was found that 6500 passed the test onthe first attempt. Estimate the probability that a randomly selected person would pass the driving test on thefirst attempt.A0 0.5, or 50%O 0.65, or 65%O 0.8. or 80%• 0.35, or 35%

Answers

To calculate the probability of an event we would use the probability formula as follows;

[tex]P\lbrack E\rbrack=\frac{\text{Number of required outcomes}}{Number\text{ of possible outcomes}}[/tex]

From the experiment conducted, 10,000 people took the driving test and 6500 passed the test on the first attempt. Therefore, to find the probability that a person randomly selected would pass the driving test on first attempt;

[tex]\begin{gathered} P\lbrack\text{first attempt\rbrack=}\frac{Number\text{ of required outcomes}}{Number\text{ of all possible outcomes}} \\ P\lbrack\text{first attempt\rbrack=}\frac{6500}{10000} \\ P\lbrack\text{first attempt\rbrack=}\frac{65}{100} \\ P\lbrack\text{first attempt\rbrack=0.65 or 65\%} \end{gathered}[/tex]

ANSWER:

The second option is the correct answer.

Find the distance between the points (0, 4) and (-7, -5).Round to the nearest tenthThe distance between them isunits.alm3

Answers

the distance between the points is

[tex]d=\sqrt[]{(-5-4)^2+(-7-0)^2}[/tex][tex]\begin{gathered} d=\sqrt[]{(-9)^2+(-7)^2} \\ d=\sqrt[]{81+49} \\ d=\sqrt[]{130} \end{gathered}[/tex][tex]d=11.401[/tex]

rounding off to nearest tenth

d = 11.4

Given that U = (a, b, c, d, e, f, g} and A = {c,d, e, f], B = (a, c, e, g}, and C = (e, f, 9 }. Find the following sets.a.AU(BNC)b.A'n(BUC)c. A n(B'nc')

Answers

a) A U (B ∩ C)

In order to obtain the result for the previous set, first find (B ∩ C)

is the intersection operation (the result is a set with common elements in the implied sets) Based on the given sets, for interection operation, you get:

(B ∩ C) = {e , g}

Next, the union operation with A results (union operation results in a set with all values of both sets but without repeating elements):

A U (B ∩ C) = {c , d , e , f , g}

b) A' ∩ (B U C)

A' is the complement of A (all values of the universe not present in A). In this case:

A' = {a , b , g}

B U C = {a , c , e , f , g}

Then:

A' ∩ (B U C) = {a , g}

c) A i (B' ∩ C')

B' = {b , d , f}

C' = {a , b , c , d}

B' ∩ C' = {b , d}

Then:

A ∩ (B' ∩ C') = {d}

Let Fx= x^3 + 2^x2 - 18 For what values of x is f(x) = 9 Enter your answers as a comma-separated list.

Answers

We have the following function f(x) = x^3+2x^2 -18. We want to solve the following equation

[tex]x^3+2x^2-18=9[/tex]

By subtracting 9 on both sides, we get the equivalent equation

[tex]x^3+2x^2-27=0[/tex]

The ratio of boys to girls in our class is 1210

Answers

The ratio of boys to girls in our class is 12:10

that means

12 divided by 10

so

12/10

simplify

6/5 or 6:5​

identify the special product by writing the letter of the answer provided. ( number 7 question in photo. )

Answers

(7)

Given the equation;

[tex](y+9)(y-9)=y^2-81[/tex]

A binommial is a polynomial that is the sum of two terms, that is;

[tex]y^2-81\ldots.\ldots\ldots\ldots.\text{ is a binommial}[/tex]

Thus;

[tex](y+9)(y-9)=y^2-81[/tex]

is a binommial that is a product of sum and difference of two terms.

CORRECT OPTION: D

A triangle is formed by three roads that connect Shelbyville, Springfield, and Capitol City together. These roads are 19, 21, and 24 miles long. This forms a(n) _______ triangle.

Answers

Given:

A triangle is formed by three roads that connect Shelbyville, Springfield, and Capitol City together.

These roads are 19, 21, and 24 miles long.

So, as we can see the three sides are different in lengths

So, the answer will be:

This forms a scalene triangle.

find f such that the given conditions are satisfiedf’(x)=x-4, f(2)=-1

Answers

Given:

[tex]f^{\prime}\left(x\right)=x-4,\text{ and}f\left(2\right)=-1[/tex]

To find:

The correct function.

Explanation:

Let us consider the function given in option D.

[tex]f(x)=\frac{x^2}{2}-4x+5[/tex]

Differentiating with respect to x we get,

[tex]\begin{gathered} f^{\prime}(x)=\frac{2x}{2}-4 \\ f^{\prime}(x)=x-4 \end{gathered}[/tex]

Substituting x = 2 in the function f(x), we get

[tex]\begin{gathered} f(2)=\frac{2^2}{2}-4(2)+5 \\ =2-8+5 \\ =-6+5 \\ f(2)=-1 \end{gathered}[/tex]

Therefore, the given conditions are satisfied.

So, the function is,

[tex]f(x)=\frac{x^{2}}{2}-4x+5[/tex]

Final answer: Option D

Name:25. What is an equation in slope-intercept form for the line given?88X•1, -3)1-3, 5)-8A. y = 1/2(x)+(-7/2)B. y = 1/2(x) -(1)C. y = 2(x) +(-5/2)D. y = 2(x)+(-7/2)

Answers

Given the points (-3,-5) and (1,-3), we can derive the equation of the line using the formula:

[tex]\begin{gathered} \frac{y-y_1}{x-x_1}\text{ = }\frac{y_2-y_1}{x_2-x_1} \\ by\text{ substituting, we have} \\ \frac{y\text{ - (-5)}}{x\text{ - (-3)}}\text{ =}\frac{-3\text{ - (-5)}}{1\text{ - (-3)}} \\ \frac{y\text{ + 5}}{x\text{ + 3}}\text{ = }\frac{2}{4} \\ 4(y\text{ + 5) = 2(x + 3)} \\ 4y\text{ - 2x + 14 = 0} \\ y\text{ = }\frac{1}{2}x\text{ }-\frac{7}{2} \end{gathered}[/tex]

This corresponds to option A

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