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3 years ago

Evaluate (4.0x10^5)(7.0x10^7)

Mathematics

1 answer:

nikdorinn [45]3 years ago

5 0

Answer:

2.8(10^13)

Step-by-step explanation:

4.0 times 7.0 equals 28.0.

(10^5) TIMES (10^7) equals 10^12 (add the exponents 5 and 7 together)

Final answer: 28.0(10^12), or, better yet, 2.8(10^13)

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A rectangle has a length that is 4 inches longer than it’s width. Its perimeter is 36 inches. Which of the following is it’s are

Kobotan [32]

Answer:

77 inches

Step-by-step explanation:

W= width

L=Length

4+w=L

4+w+4+w+w+w

4w+8=36

4w+8-8=36-8

4w=28

4w/4=28/4

w=7

4+7=11

L=11

w=7

11 x 7=77

<u>Final answer</u>

77 inches

4 0

4 years ago

Dorian is spreading mulch on his triangular flowerbed. If the base is 8 feet and the height is 6 feet. How many square feet of m

katovenus [111]

Answer:

24 square feet

Step-by-step explanation:

Given:

Dorian is spreading mulch on his triangular flowerbed.

The base is 8 feet.

The height is 6 feet.

Question asked:

How many square feet of mulch will he need for the flowerbed?

Solution:

The base of triangular flowerbed = 8 feet.

The height of triangular flowerbed = 6 feet.

now, to find how many square feet of mulch he will need for the flowerbed, we will find area of the triangular flowerbed:-

As we know:

$Area\ of\ triangle=\frac{1}{2} \times base\times height$

$=\frac{1}{2} \times8\times6\\\\ =\frac{48}{2} \\ \\ =24\ square\ feet$

Thus, 24 square feet of mulch he will need for the flowerbed.

8 0

3 years ago

At age 25, to save for retirement, you decide to deposit $75 at the end of each month in an ira that pays 6.5% compounded monthl

Alex787 [66]

Let P= $75, r=0.0054166, n= 40. In the future worth formula, F= P((1+r)^(n-1) -1) / r, it would yield a future worth of 3,247.16 at the age of 65. And the interest rate is I= (r^n-10)/(r-1). It yields an interest of 1.033

4 0

4 years ago

In the problem 12.4 + 4.7, what is the Divisor?

Radda [10]

Answer:4.7

Step-by-step explanation:

4 0

3 years ago

the ratio of oil to vinegar in a certain salad dressing is 8:5. how much oil must be blended with 7 liters of vinegar for that r

tia_tia [17]

To get the answer we can use propotion
8 oil ---------------5 vinegar
x oil----------------7 vinegar
Crossmultiply now
5x=8*7
5x=56 :5
x=11.2 - its the answer

8 0

4 years ago