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2 years ago

What is the value of x? 2/7(x+4)=−6 −35 −25 25 35

Mathematics

1 answer:

Darya [45]2 years ago

4 0

Answer:

x = -25

Step-by-step explanation:

2/7 (x+4) = -6 Plug in each of the answer to make true.

2/7 (-35+4) =

2/7 (-31) = -8.86 not this one cause it doesn't equal to -6.

It can't be the positive number because it is equal with the negative number.

The last option we have here is -25.

2/7 (-25+4) =

2/7 (-21) = -6

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Two students in your class, Ralph and Bobby, are disputing a function. Ralph says that for the function, between x = −1 and x =

marshall27 [118]

Answer:

Ralph and Bobby both are correct about slope. Because slope for both is 0.

Step-by-step explanation:

We are given a function that has two values of x's between x = −1 and x = 1.

And the average rate of change between x=-1 and x=1 is 0.

We know that x=-1 and x=1 are the points on x-axis.

If we joint x=-1 and x=1 points, we would get a straight line horizontal line on x-axis.

And note, the slope of a horizontal line is 0 always.

So, according to Bobby the graph goes up through a turning point, and then back down that means the point (-1,0) gets horizontally shift by 2 unit at (1,0).

Therefore, rise/run = 0/2, that is also equal to 0.

Therefore, Ralph and Bobby both are correct about slope.

Because slope for both is 0.

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2 years ago

Seven times the sum of a number and three

Sati [7]

Answer:

7(x + 3)

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

Suppose y varies directly with x and y=12 when x=-3 what is the value of y when x=6?

coldgirl [10]

Answer:

A. -24

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a directly or proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

In this problem we have

For x=-3, y=12

Find the value of the constant of proportionality k

$k=\frac{y}{x}$

substitute the given values

$k=\frac{12}{-3}=-4$

The linear equation is equal to

$y=-4x$

what is the value of y when x=6?

substitute the value of x in the linear equation and solve for y

$y=-4(6)=-24$

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3 years ago

Simplify the expression:<br><br> –5(6 − 2y) =

Vadim26 [7]

-30+10y
hope this helps!

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2 years ago

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C=-7/15 and x=2/5 c-4x write your answer in simplest form

pogonyaev

9514 1404 393

Answer:

-31/15

Step-by-step explanation:

Put the numbers in the expression and do the arithmetic.

$c-4x=-\dfrac{7}{15}-4\cdot\dfrac{2}{5}=-\left(\dfrac{7}{15}+\dfrac{8}{5}\right)\\\\=-\left(\dfrac{7}{15}+\dfrac{24}{15}\right)=\boxed{-\dfrac{31}{15}}$

Your graphing calculator can probably help with this.

5 0

3 years ago