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Dvinal [7]
3 years ago
5

Amanda is adding the numbers below.

Mathematics
1 answer:
Andru [333]3 years ago
5 0
Basically what you do is                             (the ^ arrow meaning exponent)
You take 3.7 + 4.45 x 10^20
Then 8.15 x 10^20, remove the decimal of 8.15 = 815 x 10^-2 x 10^20
815 x 10^18 = <span>815000000000000000000</span>

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Circumference of a 4" circle?
lesya692 [45]

Answer:

4π ≈ 12.5663706144

Step-by-step explanation:

The circumference of a circle is 2πr, or 2*pi*radius

Suppose the circle has a diameter of 4 inches. A diameter is 2x the radius, of which we are looking for, therefore:

4÷2=<u>2 inches</u> (radius length)

Now that we have the radius, let us <u>substitute</u> to find the circumference:

2πr=

2π2=

4π≈

<u>12.5663706144</u>

<u></u>

<em>I hope this helped! Let me know if you have any further questions :)</em>

7 0
3 years ago
Read 2 more answers
Solve for z. 20 − (z + 7) = 0.9
zhannawk [14.2K]

Answer:

x = 12.1

Step-by-step explanation:

20 − (z + 7) = 0.9

Distribute the minus sign

20 -x -7 = .9

Combine like terms

13 -x = .9

Subtract 13 from each side

-x = -12.1

x = 12.1

7 0
3 years ago
Read 2 more answers
Find the amount of the payment for the sinking fund.
ohaa [14]
:)
The formula of the future value of annuity ordinary and solve for pmt
Pmt=58,000÷(((1+0.06÷2)^(2×2)
−1)÷(0.06÷2))=13,863.57

Hope it helps
8 0
3 years ago
How many 4 digits codes can be formed with odd numbers without repetition? 0 is not allowed.
Sliva [168]

9514 1404 393

Answer:

  120

Step-by-step explanation:

The number of permutations of 5 things taken 4 at a time is 120.

__

There are 5 odd digits. You want to choose 4 of them, then arrange those 4 in all possible ways. There are 5·4·3·2 = 120 ways to do that.

120 4-digit codes can be formed using odd digits with no repetition.

3 0
3 years ago
48 pens are packed in four boxes how many pens are packed in nine boxes ​
katovenus [111]

Answer:

108 pens

Step-by-step explanation:

48/4=x/9

4x=432

x=108

3 0
3 years ago
Read 2 more answers
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