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3 years ago

Number 31 please guys!!!!!

Mathematics

1 answer:

monitta3 years ago

3 0

the answer is c
this is because, first you use the distributive property. Multiply 'y' by the number 3 and you get 3y
then multiply 3 by the number 4.
you get 12
subtract 7 from 12 and you get 5

So, the expression becomes 3y+5

Hope this helped!!

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Factorise the following quadratic expressions; 6a-18a 21x -3x² 1/16 - p² 25v²-1

Lubov Fominskaja [6]

Answer:

− 12 a

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( 5 v + 1 ) ( 5 v − 1 )

Step-by-step explanation:

I think these are the right answers

3 0

2 years ago

A map has the scale 2 inches equals 190 miles. The distance from Springfield to Glenview is 14 inches. How many actual miles sep

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2 years ago

The growth of a sample of bacteria can be modeled by the function bt=1001.06t where b is the number of bacteria and t is time in

alukav5142 [94]

Given:

The growth of a sample of bacteria can be modeled by the function

$b(t)=1001.06t$

where, b is the number of bacteria and t is time in hours.

To find:

The number of total bacteria after 3 hours.

Solution:

We have,

$b(t)=1001.06t$

where, b is the number of bacteria and t is time in hours.

Substituting t=3, we get the number of total bacteria after 3 hours.

$b(3)=1001.06(3)$

$b(3)=3003.18$

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7 0

3 years ago

For each equation, find y when x=-3. Then find x when y = 2 1. y = 6x + 8

crimeas [40]

⬇ Hey, the answer is down below! :) ⬇

For y: x = -3

For y it stays the same.

For x: y = 2

For x it stays the same too.

For 1.): $x = \frac{1}{6}y + \frac{-4}{3}$

Step-by-step explanation:

For y there is no step-by-step explanation unfortunately.

For x there isn't a step-by-step explanation too unfortunately.

⬇ For 1.) there is a step-by-step explanation! ⬇

For step 1 we should flip the equations.

6x + 8 = y

For step 2 we should add -8 to both sides.

6x + 8 + − 8 = y + −8

= 6x = y − 8

For step 3 we should divide both sides by 6.

$\frac{6x}{6} = \frac{y - 8}{6}$

= x = $x = \frac{1}{6}y + \frac{-4}{3}$

In result we should have $x = \frac{1}{6}y + \frac{-4}{3}$ as the answer!

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3 years ago

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3 years ago