evaluate −5x+8 when x=3.

Answer:

pretty sure the answer is "add to eliminate y"

Step-by-step explanation:

since each side is a -2y you do the opposite which is adding :)

hope this helped! Good luck!

The value of x after eliminating the variable y is -9.

The elimination method involves taking one variable out of the system of linear equations by using addition or subtraction along with multiplication or division of the variable coefficients.

Given that the two equations are 9x – 2y = – 75  and 2x – 2y = -12. The equations will be solved as,

9x – 2y = – 75  

2x – 2y = -12

The value of x will be calculated by elimination of the variable y,

9x – 2y = – 75  

-2x + 2y =+12

_____________

7x + 0 = -63

x = -9

Therefore, the value of x after eliminating the variable y is -9.

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Answer:

14+16

Step-by-step explanation:

Answer:

-12+l4-72l

Step-by-step explanation: i hope this helps

Answer:

56

Step-by-step explanation:

Answer:

7 children have brown eyes

Step-by-step explanation:

20*.35=7

Answer:

7 children have brown eyes

Step-by-step explanation:

can i get brainliest please?

Answer:

y=4x+17

Step-by-step explanation:

y-b=m(x-a)

y-5=4(x--3)

y-5=4(x+3)

y-5=4x+12

y=4x+17

Answer:

4/9

Step-by-step explanation:

Multiply each answer choice by 3/4 or 1/3 and they will all be wrong except for 4/9.

3 x 4 = 1/3

so 4/9

Answer:

Divide both sides by V

Step-by-step explanation:

The equation is not well written.

Mariko needs to solve the equation below for D. Here is the equation:

M = DV

For Mariko to get D, he needs to make D the subject of the formula by dividing both sides of the equation by the coefficient of D i.e V as shown;

Divide both sides by V

M/V = DV/V

V at the denominator will cancel out the V at the numerator to have:

M/V = D

Rearrange

D = M/V

Therefore, the statement which correctly describes the step he should take is:

Divide both sides by V. Option B is correct.

Answer:

600

Step-by-step explanation:

Given parameters:

    Number that rode in columns = [tex]3\frac{2}{3}[/tex] times the number that rode in rows.

       2200 rode in columns

Unknown:

Number of people that rode in rows = ?

Solution:

  Let the number of people that rode in columns  = C

   Let the number of people that rode in rows  = R

                 C = [tex]\frac{11}{3}[/tex]R

Number of people that rode in rows  = 2200;

            2200 =  [tex]\frac{11}{3}[/tex]R

             11R  = 2200 x 3

                R  = [tex]\frac{2200 x 3}{11}[/tex]

                R = 200 x 3

               R  = 600

Number of people that rode in rows  = 600

Answer:

:)!!

Step-by-step explanation:

Amber's variables, m= miles walked

Equation, 2m+10

Answer:

First we have the 10d donation. Than after one mile is 10d+2d=12d After mile 2 it is 12d+2d=14d  And it keeps going on and on like that.

Step-by-step explanation:

Answer:

7000

Step-by-step explanation:

Answer:

C.50

Step-by-step explanation:

It would be 50 because there are 2 sides to the coin. So if you take 100/2 you get 50. that would be the best estimate answer in my opinion

Number of times the coin will land heads will be 50

Number of trials or observation when each trial has the same probability of attaining one particular value. It determines the probability of observing a specified number of successful outcome in a specific number of trial.

Here , number of times the coin had tosses: 100

P(probability of getting a head in a coin ) : number of time head can come when flipped once / total number of observations

 since , head can come once and there are two possibility either head or tail

hence P= 1/2

this implies number of times heads land up = n*P = 100 *(1/2) = 50

option c) 50

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Answer:

Option (D) is correct

Step-by-step explanation:

If y is a multiple of x and versa, it will have a constant of proportionality.

Option (A)

y = (81/3)xy

y will cancel out

1=27x

It is not correct

Option (B)

y=9xy

y will cancel out

1=9x

Option (C)

y=3xy

y will cancel out

1=3x

Option (D)

y = (1/9) x

y will cancel out

x=9y

In option (D), we see that x is 9 times of x. It means it has constant of proportionality equal to 9.

The equation y = 9x represents the constant of proportionality which is equal to 9.

The general equation of a straight line is -

[y] = [m]x + [c]

where -

[m] → is slope of line which tells the unit rate of change of [y] with respect to [x].

[c] → is the y - intercept i.e. the point where the graph cuts the [y] axis.

The equation can also be used to represent direct proportionality as -

y = mx

m = y/x

[m] is called constant of proportionality

We have the constant of proportionality equal to 9

The equation y = 9x represents the constant of proportionality which is equal to 9 as when compared with y = mx, we get m = 9.

Therefore, the equation y = 9x represents the constant of proportionality which is equal to 9.

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Answer:

a. for all the values of g to be found look at x intercepts on the graph. eg g(0)= 0, which is the value of x

b. g(x)= 0, look at the value of y at 0, it's going to be 0

c. look at the values of y=2 at the graph

this is what I think. best of luck

Answer:

4 1/2(4)

Step-by-step explanation:

djjdiebjeidjjexjjebej

Answer:

57

Step-by-step explanation:

87-30=57. That means that there are 57 more pennies than dimes in the bowl.

Answer:

subtract 30 from 87

Step-by-step explanation:

87-30

An odd number is (2x) + 1

An even number is (2x)

These are the definitions.

Using the binomial (2x + 1)(2x + 1), we can see the properties of all products made from odd numbers.

Foiling will give 4x^2 + 4x + 1.

4x^2 is even because 4x^2 can be expressed as 2(2x) x 2(2x).

4x is even because 4x can be expressed as 2(2x)

This means that 4x^2 + 4x is even so the expression 4x^2 + 4x + 1 is odd because an even number + 1 is odd as shown by (2x) + 1.

This shows that every outcome of the product of 2 odd numbers will result being odd.

This means there is no answer to this problem, because any number that is a multiple of 2 is even. (Basically the definition of even)

Using even and odd numbers concepts, it is found that the product is an even number.

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A similar problem is given at https://brainly.com/question/7852959

Answer:

p [tex]\geq[/tex] -21

Step-by-step explanation:

It is the inequality for p

Answer:

So, the length (L) = 7 3/4 ft = 31/4 (as an improper fraction)

the width (W)  = (1/3)xL

So the width = 1/3 x (31/4) =

31/12 = 2  7/12 feet

Step-by-step explanation:

its up there

The volume of box at x = 4 is, 100 cubic units

A cuboid is the solid shape or three-dimensional shape. A convex polyhedron which is bounded by six rectangular faces with eight vertices and twelve edges is called cuboid.

We have to given that;

The volume of the box is modeled by the function,

⇒ V (x) = 5x² + 5x

Now, At x = 4;

The volume of the box is,

⇒ V (x) = 5x² + 5x

⇒ V (4) = 5 × 4² + 5 × 4

⇒ V (4) = 5 × 16 + 20

⇒ V (4) = 80 + 20

⇒ V (4) = 100 cubic units

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Answer:

w=6

w=1

Step-by-step explanation:

Answer:

w=40

Step-by-step explanation:

Answer:

Monday

Tuesday

Step-by-step explanation:

Given the temperature data:

Mon _____ Tue _____ Wed _____ Thur ___ Fri

-2.5°F ___ - 1.9°F _____ 0°F _____ - 1.5°F _0.5°F

Days colder than - 1.75°F

Days colder than - 1.75°F are days whereby the temperature value is less than - 1.75

Hence,

-2.5°F < - 1.75°F = (Monday)

-1.9°F < - 1.75°F = (Tuesday)

Hence, temperature on Monday and Tuesday is colder than - 1.75°F

Answer:

Monday

Tuesday

Step-by-step explanation:

Answer:

8640

Step-by-step explanation:

All exterior angles must = 360 degrees.

360/7.2= 50

There are 50 exterior angles, so it's logically concluded that there are 50 sides.

Interior angle= 180-7.2= 172.8

172.8 x 50= 8640.

Credit: laserdog248

Answer:

B. It has infinite solutions.

I believe so

Answer:

8, 0.5

Step-by-step explanation:

i hope this helps :)