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2 years ago

Hi i need help with this quiz its not timed but i need it in before tomorrows class here a screen shot please helppppppp

Mathematics

1 answer:

Zigmanuir [339]2 years ago

3 0

Answer:

The surface area of the prism is 310

Step-by-step explanation:

1. SA= 2(lw+lh+wh) / SA= 2(10*7+10*5+7*5)

2. 1) SA= 2(10*7+10*5+7*5)

2) SA=2(70+50+35)

3) SA=2*155

4) SA=310

3. The surface area is 310

Hope this helps/ is right :)

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Write a simplified expression for the perimeter of the triangle.

Anit [1.1K]

Answer:

15m+13

Step-by-step explanation:

The perimeter of a triangle is the sum of all sides.

$=(7m+4)+(8m-3)+(12)\\\\=7m+4+8m-3+12\\\\=15m+13$

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2 years ago

Use linear regression to find the equation of the line that best fits the data. Predict the average retail price of a car that i

Dafna11 [192]

Answer:

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Step-by-step explanation:

if it still works then it is not worthless if its super old then it can be a collectors item

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2 years ago

PLEASE HELP

Usimov [2.4K]

Answer:

$r\approx0.03\text{ or about $3\%$}$

Step-by-step explanation:

The standard compound interest formula is given by:

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

Where A is the amount afterwards, P is the principal, r is the rate, n is the times compounded per year, and t is the number of years.

Since we are compounding annually, n=1. Therefore:

$\displaystyle A = P (1+r)^{t}$

Lester wants to invest $10,000. So, P=10,000.

He wants to earn $1000 interest. Therefore, our final amount should be 11000. So, A=11000.

And our timeframe is 3.3 years. So, t=3.3. Substituting these values, we get:

$11000=10000(1+r)^{3.3}$

Let’s solve for our rate r.

Divide both sides by 10000:

$1.1=(1+r)^{3.3}$

We can raise both sides to 1/3.3. So:

$\displaystyle (1.1)^\frac{1}{3.3}=((1+r)^{3.3})^\frac{1}{3.3}$

The right side will cancel:

$\displaystyle r+1=(1.1)^\frac{1}{3.3}$

So:

$\displaystyle r=(1.1)^\frac{1}{3.3}-1$

Use a calculator:

$r\approx0.03$

So, the annual rate of interest needs to be about 0.03 or 3% in order for Lester to earn his interest.

5 0

2 years ago

You have 896 grams of a radioactive

Margarita [4]

Every 56 seconds, the radioactive substance is divided in half.

224 / 56 = 4

We need to cut the substance in half 4 times.

896 / 2 = 448

448 / 2 = 224

224 / 2 = 112

112 / 2 = 56

After 224 seconds, there will be 56 grams of the radioactive substance left over

7 0

2 years ago

Read 2 more answers

The table below shows 10 data values:

andrezito [222]

It would be d , because the lowest number which is your (min) is 72 the highest number which is your (max) is 93 . Your median would be 85 because you would add 84 & 86 and in result you would get 170 then you would divide by 2 and get 85 . Your Q1 would be 76 and your Q3 would be 91 , there is 10 numbers in total separate them (72,74,76,83,84) and (86,89,91,92,93) then find the middle number in each

Hope this helps !

7 0

2 years ago