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andrey2020 [161]
3 years ago
15

2.1x10 to the -3 power x 2x10 to the second power

Mathematics
1 answer:
ad-work [718]3 years ago
5 0

Answer:

4.2*10^{-1}

Step-by-step explanation:

We want to simplify:

2.1*10^{-3}\times 2*10^2

We rewrite to get:

2.1*2*10^2*10^{-3}\times10^2

We now apply the laws of indices

4.2*10^{-3+2}

We simplify to get 4.2*10^{-1}

We leave our final answer is scientific form.

The final answer is therefore:

4.2*10^{-1}

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PLEEEEEEEAAAAAAAAAASSSSSSSSSEEEEEEE a wee this quickly<br>How did he get answer A
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Answer:

To get answer A,  Dave took 47*5 = 235

Step-by-step explanation:

There are 147 containers that contain 5 gallons each.  We need to multiply to find the total number of gallons.

total number of gallons = containers * number of gallons per container

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6 0
4 years ago
Read 2 more answers
How do you solve 58 and 1/3÷6 and 2/3
strojnjashka [21]

Answer:

35/4, or 8 3/4 as a mixed number

Step-by-step explanation:

First, change 58 1/3 into an improper fraction by multiplying the whole number and denominator, then adding the numerator. 58 x 3 equals 174, + 1 equals 175. So, 58 1/3 as an improper fraction is 175/3. Next, change 6 2/3 into an improper fraction. 6 times 3 equals 18, plus 2 equals 20. So, it's 20/3. So, here are your two fractions:

175/3 & 20/3

To divide fractions, I like to use a method called Keep Change Flip. Basically, you keep the first fractions the same, then change the sign. The division sign changes into a multiplication symbol. Now, your equation should look like this: 175/3 x 20/3. Next, flip the fraction from 20/3 into 3/20. This is what your equation should look like now: 175/3 x 3/20. Now you can multiply the fractions together. Before you do so, you can cross reduce to make it easier. What is a number that both 3 and 3 can be divided by? The correct answer is 3. 3/3= 1, so the equation is now 175/1 x 1/20. However, you can continue to cross reduce. You can also divide 175 and 20 by 5, so the equation changes into this: 35/1 x 1/20. Multiply numerator by numerator, denominator by denominator. So, the answer is 35/4, or 8 3/4 as a mixed number. Hope this helped!

5 0
3 years ago
is searching online for airline tickets. Two weeks​ ago, the cost to fly from to was 210 ​$. Now the cost is ​305$. What is the
harkovskaia [24]

Answer:

Step-by-step explanation:

20]x]

3 0
3 years ago
Pleaseee help meee struggling currently
lisabon 2012 [21]

Answer: 2908.92435 inches.

Step-by-step explanation for shape 1: A = 2(wl + hl + hw) = 2 · (30 · 13 + 13 · 13 + 13 · 30) = 1,898 inches.

Step-by-step explanation for shape 2:

Using the formulas:

A=2AB+(a+b+c)h

AB=s(s﹣a)(s﹣b)(s﹣c)

s=a+b+c

2

Solving for A:

A=ah+bh+ch+1

2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=9·30+13·30+9·30+1

2·﹣94+2·(9·13)2+2·(9·9)2﹣134+2·(13·9)2﹣94≈1010.92435

Step-by-step explanation for total volume: 2908.92435 inches.

5 0
3 years ago
Read 2 more answers
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