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3 years ago

PLEASE HELP ME I need it fast don’t explain

Mathematics

1 answer:

Katena32 [7]3 years ago

5 0

Answer:

The answer should be A, I think.

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Victoria has a jewelry box shaped like a rectangular prism! Please help!!

Klio2033 [76]

Answer:

Step-by-step explanation:

Length * width * height = volume

15*9*9 = 1215

6 0

3 years ago

12. Adam drew two same size rectangles and

finlep [7]

Answer:

Step-by-step explanation:

1/3 of one rectangle

1/4 of one rectangle

1/3 compared to 1/4

common would be twelfths

6 0

3 years ago

Sam receives 4 dollars more than Nathan for allowance. Nathan receives 8 dollars less than Hector. If Sam receives 15 dollars fo

QveST [7]

S = N + 4
N = H - 8
S = 15

S = N + 4

Plug in 15 for 'S':

15 = N + 4

11 = N

N = H - 8

11 = H - 8

Add 8 to both sides:

19 = H

So Hector receives $19 for allowance.

3 0

3 years ago

Read 2 more answers

Solve 4(5x - 2) = 2(9x + 3)

saveliy_v [14]

X will equal 7.
4(5x-2)=2(9x+3)
20x-8=18x+6
20x-18x=8+6
2x=14
x=7

7 0

3 years ago

Read 2 more answers

Logarithms and stuff, please help

Alla [95]

Answer:

$\displaystyle t=-25\log\left(\frac{20}{30}\right)$

Step-by-step explanation:

<u>Logarithms</u>

The model that predicts the percentage of voters (V) as a function of the number of years (t) is:

$V(t)=100-30\cdot e^{-0.04t}$

It's required to find in how many years the value of V will be V=80%. The equation to solve is:

$100-30\cdot e^{-0.04t}=80$

Subtracting 100:

$-30\cdot e^{-0.04t}=80-100=-20$

Dividing by -30:

$\displaystyle e^{-0.04t}=\frac{20}{30}$

Applying logs:

$\displaystyle \log( e^{-0.04t})=\log\left(\frac{20}{30}\right)$

For logs property:

$\displaystyle -0.04t\log(e)=\log\left(\frac{20}{30}\right)$

log(e)=1. Solving for t:

$\displaystyle t=\frac{\log\left(\frac{20}{30}\right)}{-0.04}$

Since 0.04=1/25:

$\boxed{\displaystyle t=-25\log\left(\frac{20}{30}\right)}$

6 0

3 years ago