How do I this question?

Mathematics

1 answer:

mixas84 [53]4 years ago

7 0

You just do what it tells you to do.... divide by -5x... you are left with 10

You might be interested in

8x-2y=-14 in slope intercept form

IrinaVladis [17]

Answer:

y=4x-7

Step-by-step explanation:

8x-2y=-14

-8x = -8x

-2x=-8x-14

-2= -2 -2

y= $-\frac{8}{2}x-\frac{14}{2}$

y=4x-7

8 0

3 years ago

Three times a quantity decreased by fourteen

Kisachek [45]

3(x)-14 3(1)-14

3x-14 3-14

-11

8 0

3 years ago

Pre-orders for the yearbook cost $38 each and full price cost $45 each. If 24 students in Mr. Hillman's class purchased yearbook

aleksandr82 [10.1K]

15 students preordered the year book and 9 students paid full price.

Solution:

Given that

Cost of pre-ordered year book = $\$38$ each

Cost of full price of year book = $\$45$ each

Number of students in Mr. Hillman's class purchased yearbooks = 24

Total price spent by 24 students to purchase year book = $\$975$

Need to determine number of students pre-ordered and number of students paid full price.

Let assume number of student pre-ordered year book = x

As out of 24, x students pre-ordered the yearbook , so remaining are the ones who paid full price

So number of students paid full price = $24-x$

Money spent by students who pre-ordered the book = number of student pre-ordered year book multiplied by Cost of 1 pre-ordered year book = $x\times38 = 38x$

Money spent by students who paid full price = number of students paid full price x Cost of 1 full price year book = $(24-x)\times 45 = 1080-45x$

Total price spent by 24 students to purchase year book = Money spent by students who pre-ordered the book + Money spent by students who paid full price

$\Rightarrow 975=38 x+1080-45 x$

On solving above expression for x, we get

$\begin{array}{l}{\Rightarrow 975-1080=38 x-45 x} \\\\ {\Rightarrow-105=-7 x} \\\\ {\Rightarrow \frac{-105}{-7}=x} \\\\ {\Rightarrow x=15}\end{array}$