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liubo4ka [24]
3 years ago
7

Whats is the sum of 4x10^-5 and 3x10^-5 written in standard form?

Mathematics
1 answer:
Dimas [21]3 years ago
4 0
(4x10^-5) + (3x10^-5) would equal .00004 + .00003 = .00007

The way to convert scientific notation to standard notation is simple:

with negative powers, simply treat it as a whole number, subtract 1 from it and add that many zeros before the number you are multiplying by 10

with positive powers, simply subtract 1 from it and add that many zeros after the number you are multiplying by 10
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A region with a 5-mile radius has a population density of about 3100 people per square mile. Find the number of people who live
Gwar [14]

Answer:

243,000 people

Step-by-step explanation:

First, what we need to do is to calculate the area of the region using the 5-mile radius

Mathematically, we can calculate this as the area of a circle

Area = pi * r^2

Our r here is 5 miles

Area = pi * 5^2 = pi * 25 = 78.54 square miles

Now to get the population, we know that per square mile we have 3,100.

Hence per 78.54 square mile, we have 78.54 * 3100 = 243,273 people

To the nearest thousand, 243,000

4 0
3 years ago
PLEASE HELP ME WITH THIS QUESTION AND ILL BRAINLIEST YOU
neonofarm [45]

Answer:

c

Step-by-step explanation:

Two sum of any two side lengths of a triangle will always be greater than the length of the remaining side

a doesn't work because 8+12=20 and 20 is not greater than 20

b doesn't work because 4+5=9 and 9<10

d doesn't work because 6+6=12 and 12 is not greater than 12

c is the only option where you can take any two sides, add them, and the sum will be greater than the remaining side.

For example, for c,

6+8=14, and 14>10

8+10=18, and 18>6

10+6=16, and 16>8

7 0
3 years ago
Read 2 more answers
4 students measure their height. Their heights measure 184 cm, 192 cm, 164 cm, and 200 cm. What is the mean height of the studen
melomori [17]
The mean is the average, which is the sum of all the numbers divided by the total numbers there are. I will add them up for you, and then work from there.
184 + 192 + 164 + 200 = 740.
There is 740cm total, but now we need to divide by how many students we have. We have 4 students total.
740/4 = 185.
Your average (mean) height of the students is 185cm.
I hope this helps!
8 0
3 years ago
Read 2 more answers
What is the coefficient of x2 in the expansion of (x + 2)3?
Vinvika [58]
I think 6 is the answer. Hopefully I answered your question

4 0
3 years ago
Your credit card has a balance of $5400 and an annual interest rate of 17%. You decide to pay off the balance over two years. If
Phoenix [80]

Answer:

5400/12= 450 paid

1006.56/2=503.28 interest

total is 5,903.28

total for paid 491.94 for months

Step-by-step explanation:

6 0
3 years ago
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