Which value of y mAkes the equation below true. 3y+8-7y=11

1 answer:

6 0

We have
$3y+8-7y=11$
First, we can combine like terms 3y and -7y to get -4y.
Then, we have $-4y+8=11$ We could then subtract 8 on both sides to get $-4y=3$
Finally, we isolate y completely by dividing both sides by -4, to get
$y=- \frac{3}{4}$

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A runner completed a 26.2-mile marathon in 210 minutes.Estimate the unit rate, in minutes per mile. Round your answer to the nea

ELEN [110]

Answer:

The unit rate in minutes per miles be 8.02 minutes per miles .

Step-by-step explanation:

Step 1. 26.2 miles/ 210 mins = x miles / 1min

1 * 26.2 / 210 = .12 miles / min

Step 2. 26.2. 0.13

÷210.

210. 1

(The amount miles ran in 1 minute is 0.13 miles.)

Step 3. 26.2/210= .125 miles per minute

210/26.2= 8.02 minutes per mile

Step 4. 1) Cross multiply. (26.2 = 210x)

2) Divide 210 from each side. (26.2/210 = .1247619048 , 210x/210 = x)

3) Round to the nearest 100th. (.12)

4) X=.12

5) .12 miles ran per minute

6 0

2 years ago

7x+4y-6z=-73 8x+5y+6z=-59 -4x-8y-3z=46 y=

Oksanka [162]

Is this all one equation??

5 0

3 years ago

How do you work this out?

Ira Lisetskai [31]

I'm guessing you find the length of the hypotenuse using the pythagorean theorem.

a² + b² = c² a and b are the legs and c is the hypotenuse

15² + 8² = c²

225 + 64 = c²

289 = c²

√289 = √c²

17 = c

hope that helps, God bless!

3 0

4 years ago

Read 2 more answers

Please answer these questions! will mark brainlist!

timofeeve [1]

1st photo....

Yes

Explanation

All when divided becomes 1/3 , so it is proportional...

Pls mark brainliest

2nd photo....

Yes