3 years ago

Can someone pls help me with this last question

Mathematics

1 answer:

Jlenok [28]3 years ago

7 0

Answer:

33/4 hope it helps youuuuuuuuu

You might be interested in

Help! I have solving systems of equations using substitution, and sometimes I have equations like this:

timurjin [86]

For systems of equations try using graphing, substitution, and elimination. For example
{2x+7y=3}
{x=-4y}
You should first look at if you have a variable that can be substituted (using substitution) and in this case we do! you plug in the x into 2x meaning 2(-4y)+7y=3
1) distribute -8y+7y=3
2) combine like terms in this case -8y+7y= -1y
3) solve -1y=3
y=-3
so currently our solution is (0,-3)
now we solve for x.
we plug our solved variable (y) into 7y
7(-3) and our equation looks like this
2x+7(-3)=3
1) distribute 7(-3)=-21
2) rewrite then solve 2x+(-21)=3
3) isolate variable -21+21 & 3+21
4) 2x=24
5) solve 2/24 = 12
Meaning our solution is (12,-3)
This is how to solve by substitution.

8 0

3 years ago

The table shows the precipitation in December, in inches, for Washington state from 2005 to 2013. What was the mean amount of pr

polet [3.4K]

Hello,
Please, see the attached file.
Thanks.

7 0

3 years ago

Read 2 more answers

If ∠ABC and ∠CBD are supplementary angles, then m∠ABC + m∠CBD = 180° represents the definition of Question 2 options: A) complem

Oksanka [162]

Answer:

I would think it is supplementary.

Step-by-step explanation:

If 2 angles equal 180 degrees, then they are supplementary.

6 0

4 years ago

The cost of a gallon of milk is $.50 more than five times the cost of a gallon of water. If

pychu [463]

Answer:

$0.65

Step-by-step explanation:

3.75-.5=3.25

3.25/5=.65

5 0

3 years ago

What is the percent increase in the surface area of the AAA battery to the AA battery? Round your answer to the nearest tenth of

Bogdan [553]

Answer:

101.1%

Step-by-step explanation:

The two batteries are in the shape of cylinder.

The total surface area of a cylinder

SA = (2πr^2 + 2πrh ) =

For AAA battery

h = 0.8mm

r = 1.9 mm

SA = (2π(1.9)^2 + 2π × 1.9 × 0.8 )

SA = 22.68 + 9.55

SA = 32.23 mm^2

For AA battery

h = 1 mm

r = 2.75 mm

SA = (2π(2.75)^2 + 2π×2.75× 1 )

SA = 47.52 + 17.28

SA = 64.80 mm^2

Increase in SA = 64.80 - 32.23

Increase in SA = 32.57

% increase = increase in SA/AAA × 100

% increase in SA = 32.57/32.23 × 100

% increase in SA = 101.1%

4 0

3 years ago