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3 years ago

What is the surface area of a cube that is 2 inches wide, 8 inches long, and 10 inches tall

Mathematics

1 answer:

natita [175]3 years ago

4 0

Answer:

160 square feet

Step-by-step explanation:

you would do 2*8*10 to get 160 which would be your square surface area

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Cooper invested $3,100 in an account paying an interest rate of 2%

Liula [17]

Answer:

Robert will have $481 more in his account than Cooper.

Step-by-step explanation:

Compound interest:

The compound interest formula is given by:

$A(t) = P(1 + \frac{r}{n})^{nt}$

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.

Continuous compounding:

Similar to compound interest:

$A(t) = P(1 + r)^t$

Cooper:

Cooper invested $3,100 in an account paying an interest rate of 2% compounded quarterly. This means that $P = 3100, r = 0.02, n = 4$

After 12 years is A(12). So

$A(t) = P(1 + \frac{r}{n})^{nt}$

$A(12) = 3100(1 + \frac{0.02}{4})^{4*12}$

$A(12) = 3938.5$

Cooper will have $3938.5 in his account.

Robert:

Robert invested $3,100 in an account paying an interest rate of 3 % compounded continuously. So $P = 3100, r = 0.03$ .

After 12 years.

$A(t) = P(1 + r)^t$

$A(12) = 3100(1 + 0.03)^{12}$

$A(12) = 4419.9$

Robert will have $4419.9 in his account.

How much more money would Robert have in his account than Cooper, to the nearest dollar?

4419.9 - 3938.5 = 481.4

To the nearest dollar, Robert will have $481 more in his account than Cooper.

3 0

3 years ago

A student uses the ratio of 4 oranges to 6 fluid ounces to

anygoal [31]

A student uses the ratio of 4 oranges to 6 fluid ounces to find the number of oranges needed to make 24 fluid ounces of juice. The student writes the proportion:4/6=24/16

8 0

3 years ago

I need help with all except graph on first question please! Work shown or not doesn’t matter

Jobisdone [24]

Answer:

y = 7/5x + 18/5

Step-by-step explanation:

so we have y = mx + b

f(1) = 5

f(-4) = -2

so let's find b

so like if you do (5 - (-2))/(1 - (-4)) you get (5 + 2)/(1 + 4) = 7/5

y = 7/5x + b

so now we can plug in a value like f(1) = 5

5 = (7/5)1 + b

b = 18/5

5 0

3 years ago

A graph has seconds after water began leaking on the x-axis, and volume of water in cup (milliliters) on the y-axis. A line goes

xz_007 [3.2K]

Answer:

Step-by-step explanation:

edge

7 0

3 years ago

Read 2 more answers

PLEASE HELP!

Vladimir79 [104]

Answer:

1) 4

2)I think 2

3)4

4)3

5)2

6)1

7)3

Step-by-step explanation:

1) since the x is to squared it is a quadratic equation

3) A and D have same slope=0.5

others were solved using Excel

3 0

3 years ago