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Lena [83]
3 years ago
6

I need help with the working

Mathematics
1 answer:
Nina [5.8K]3 years ago
6 0

Answer:

288 cm^3.

Step-by-step explanation:

The volume of each small  square = 2*2*2 = 8 cm^3

Each rectangular length of end 2*2 is made up of 12/2 = 6 squares.

There are  6 of these rectangular lengths.

So the volume = 6 * 6 * 8 cm^3

288 cm^3.

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Richard had his car repaired at a body shop.
Alisiya [41]

Answer:

2 hours

Step-by-step explanation:

308-100=208

208÷52=2

6 0
4 years ago
The rate of change of a bacteria (N) with respect to time is directly proportional to itself. When t=0, N=500. When t=4, N=3000.
Lyrx [107]

Fine the average rate of change by the difference in N over the difference in T:

3000 - 500 / 4-0 = 2500 / 4 = 625

This means for every 1 T, N = 625.

Now multiply 625 by 8:

625 x 8 = 5000

When T = 8 N = 5,000

The decay rate can be found by dividing -ln(2) by the half life.

Decay rate = -ln(2) / 5715 = -0.00012

4 0
3 years ago
Please help. Will give brainliest!!
N76 [4]

Answer:

A.

Step-by-step explanation:

For starters, we can combine like terms. we can combine -3 with -2 to get -5, and \frac{3}{5} x with \frac{-1}{5} x to get \frac{2}{5} x. Now, we have \frac{2}{5} x-5 as our final answer, or answer A. Also, brainliest is not necessary. Hope this helps!

4 0
3 years ago
Given the figure below, how much paper is needed to make the drinking cup to the nearest square inch?
miskamm [114]
To find this, we need to find the Surface area of the lateral surface of the cone (without the circle base). 
LSA _{cone} =  \pi rl
Now we just need to plug what we know into the equation
r=1.5 \\l=4
LSA _{cone} =  \pi (1.5)(4) \\LSA_{cone}= 6\pi
Wither you can keep your answer in pi or take it out of pi, depending on what the requirements are. 
To take it out of pi you need to multiply 6 by pi (remembering to use 3.14 as pi in most cases since that is what is generally accepted on tests and exams). 
6 \pi = 6(3.14)= 18.84
Then rounding to the nearest square inch which would mean that the amount of paper needed is =19in²


6 0
3 years ago
Jacki plans to pay for the down payment of a new car with her credit card. The annual interest rate for her credit card is 17%.
AlladinOne [14]

very interesting

the equation we are given is for when the units of t are in years

I do know that you want to have the variable as time, but I'm not sure if you want it in years or months

I will solve for in months because that makes more sense

in that case, it will be 2250(1+r)^m where r=monthly interest rate and m=time in months

to compare, we can do

when 1 year has elapsed, t=1 and m=12

and the amount earned should be the same

so therfor we can say

2250(1.17)^1=2250(1+r)^{12}

divide both sides by 2250 to make it easier

1.17^1=(1+r)^{12}

1.17=(1+r)^{12}

take 12th root of both sides

\sqrt[12]{1.17}=1+r

minus 1 both sides

-1+\sqrt[12]{1.17}=r

using a calculator

-1+1.01316961=r

<span>0.01316961=r</span>

<span>not sure if yu want percent to thousandth or decimal to thousandth</span>

<span>if decimal then 0.013 is interest rate</span>

<span>if percent then it is 1.317% interest rate</span>

8 0
4 years ago
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