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slega [8]
3 years ago
15

Please help just say A,B,C, Or D if you don’t feel like giving examples. Thank you

Mathematics
2 answers:
Mashcka [7]3 years ago
7 0

D. is the correct anser

Elenna [48]3 years ago
4 0

I think that it is either A. or C.

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Which expression is equivalent to (s+7) + 8 by the Associative Property of Addition? *
Maurinko [17]
An equivalent expression would be s+15


You simplify the expression.

So yea the answer is s+15
7 0
3 years ago
Read 2 more answers
what was the original principal for an 8% simple interest bank account that holds $4340 after 3 years?
strojnjashka [21]

The principal amount is \$3500

<u>SOLUTION: </u>

Given that, simple interest 8\%; \$4340 after 3 years

We have to find the principal.

Now, let the principal amount be p.  

Then, \text { Simple Interest }=\frac{p \times 8 \times 3}{100}=\frac{p \times 24}{100}

Now, we know that, Balance = Principal amount + Simple Interest  

\begin{array}{l}{\rightarrow \$ 4340=p+\frac{24 p}{100}} \\\\ {\rightarrow 4340=p\left(1+\frac{24}{100}\right)} \\\\ {\rightarrow 4340=p \times \frac{100+124}{100}} \\\\ {\rightarrow p=4340 \times \frac{100}{124}} \\\\ {\rightarrow p=35 \times 100} \\\\ {\rightarrow p=3500}\end{array}

5 0
3 years ago
A cylinder shaped can needs to be constructed to hold 400 cubic centimeters of soup. The material for the sides of the can costs
LenKa [72]

Answer:

The dimensions of the can that will minimize the cost are a Radius of 3.17cm and a Height of 12.67cm.

Step-by-step explanation:

Volume of the Cylinder=400 cm³

Volume of a Cylinder=πr²h

Therefore: πr²h=400

h=\frac{400}{\pi r^2}

Total Surface Area of a Cylinder=2πr²+2πrh

Cost of the materials for the Top and Bottom=0.06 cents per square centimeter

Cost of the materials for the sides=0.03 cents per square centimeter

Cost of the Cylinder=0.06(2πr²)+0.03(2πrh)

C=0.12πr²+0.06πrh

Recall: h=\frac{400}{\pi r^2}

Therefore:

C(r)=0.12\pi r^2+0.06 \pi r(\frac{400}{\pi r^2})

C(r)=0.12\pi r^2+\frac{24}{r}

C(r)=\frac{0.12\pi r^3+24}{r}

The minimum cost occurs when the derivative of the Cost =0.

C^{'}(r)=\frac{6\pi r^3-600}{25r^2}

6\pi r^3-600=0

6\pi r^3=600

\pi r^3=100

r^3=\frac{100}{\pi}

r^3=31.83

r=3.17 cm

Recall that:

h=\frac{400}{\pi r^2}

h=\frac{400}{\pi *3.17^2}

h=12.67cm

The dimensions of the can that will minimize the cost are a Radius of 3.17cm and a Height of 12.67cm.

3 0
3 years ago
A student has started a lawn care business. He charges $15 per hour to mow lawns and $20 per hour for gardening. Because he is s
Bess [88]

Answer:

:)

Step-by-step explanation:

15x=300

x will equal 20

20x=300

x will equal 15

8 0
3 years ago
Walmart is selling 5 notebooks for $4.00. How much is it to buy 12 notebooks?
Anon25 [30]

Answer:

$9.60

Explanation:

4 divided by 5= 0.8

0.8 times 12= 9.6

7 0
3 years ago
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