3 years ago

5(y-4)=7(2y+1) find the y

Mathematics

1 answer:

lozanna [386]3 years ago

6 0

Hi Brainiac

Distribute

(5)(y)+(5)(-4)=(7)(2y)+(7)(1)

5y-20=14y+7

Now we need to subtract 14y from both sides

5y-20-14y=14y+7-14y

-9y-20=7

Now add 20

-9y-20+20=7+20

-9y=27

Divide both sides by -9 to both sides so we can find the value for y

-9y/-9= 27/-9

y= -3

I hope that's help:0

Good night

You might be interested in

Lori bought a shirt and a hat at half-off sale. If she spent a total of $21 on the two items, what was the original price of the

Rzqust [24]

Answer:

Step-by-step explanation:

first you do 21×2 and that's literally it

3 0

2 years ago

What is the value of a?

Annette [7]

Answer:

Step-by-step explanation:

Look at the picture.

The formula of an area of a trapezoid is:

$A=\dfrac{b_1+b_2}{2}\cdot h$

$b_1,\ b_2$ - bases

$h$ - height

We have:

$A=128,\ b_1=a+2,\ b_2=a-2,\ h=8$

Substitute:

$128=\dfrac{a+2+a-2}{2}\cdot8\\\\128=\dfrac{2a}{2}\cdot8$

$128=8a$ <em>divide both sides by 8</em>

$16=a\to a=16$

8 0

3 years ago

Is this a right triangle??? Show work

podryga [215]

Answer:

This is a right angle.

Step-by-step explanation:

As you can see below, the angle specified is 90 degrees. That is a right angle.

6 0

3 years ago

A grocery store owner budgets $5,000 to buy and maintain a booth for 300 days to give out samples of food. If she bought the boo

serious [3.7K]

Answer:

x ≤ $12 a day

Step-by-step explanation:

5000-1400=3600

3600/300=12

7 0

2 years ago

PLSSSSS HELP 15 POINTS

Otrada [13]

Answer: it’s 184

explanation: 184 because the angles across from each other are always the same

8 0

2 years ago

Read 2 more answers