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In-s [12.5K]
3 years ago
14

Please help!

Mathematics
2 answers:
zmey [24]3 years ago
8 0
7 x 10^-9
4 x 10^-7
1 x 10^4
2 x 10^4
Letter C
docker41 [41]3 years ago
6 0
So, the smaller the exponent the smaller the number. So one that is -9 is very small.
We first want to compare the numbers through the exponents.

-9 is the lowest exponent, meaning it is the smallest number, so any answer that doesn't start with 7×10^-9 is incorrect

Meaning we can cross out answer choices A and B

-7 is the next to smallest exponent, but Choices C and D both have 4×10^-7 as the second, so we cannot out anymore answers.

After that the final two numbers each have the same exponent, so then we look at the actual numbers.

Which are 1 and 2, they are each risen to the 4th power, meaning they have 4 zero's after the number.
So the two numbers we have are 10000 and 20000

10000 is less than 20000, so that means 1×10^4 comes next in our ordering of least to greatest, leaving 2×10^4 as the greatest

So we order them properly from least to greatest, and our chart is:

7×10^-9 < 4×10^-7 < 1×10^4 < 2×10^4

This is the same as answer choice C, so C is your answer! Hopefully this all makes sense!
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Please help me with my maths homework asap. Thank youuu
notka56 [123]
A = 3.141 * (3km^2). Just put that into a calculator and bingo
5 0
3 years ago
Read 2 more answers
Use differentials to estimate the amount of paint needed (in m3) to apply a coat of paint 0.04 cm thick to a hemispherical dome
pogonyaev

The amount of paint is the volume of paint needed.

The amount of paint needed is 0.065312 cubic meters

<h3>How to determine the amount of paint needed</h3>

The volume of a hemisphere is:

V = \frac 23\pi r^3

Differentiate the above equation

V' = 2\pi r^2 r'

The above equation represents the estimate of the amount of paint needed.

Where:

  • r represents the radius (r = 52/2 m)
  • r' represents the thickness (r' = 0.04 cm)

So, we have:

V' = 2\pi r^2 r'

V' = 2 * 3.14 * (52/2\ m)^2 * (0.04cm)

V' = 2 * 3.14 * (26\ m)^2 * (0.04cm)

Express cm as m

V' = 2 * 3.14 * (26\ m)^2 * (0.0004m)

V' = 0.065312 m^3

Hence, the amount of paint needed is 0.065312 cubic meters

Read more about volumes at:

brainly.com/question/10171109

3 0
2 years ago
What is the slope of this chart?
Anastasy [175]
This was what I got

5 0
3 years ago
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Meredith is playing games at an arcade to earn tickets that she can exchange for a prize. She has 294 tickets from previous visi
grin007 [14]
First, plug in 448 for y:

448=7x+294

Secondly, subtract 294 from both sides to isolate x:

154=7x

Divide both sides by 7:

22=x

Refine:

x=22

The answer is D)22
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A certain game and fun center charges a fee to rent the party room for birthday parties plus an additional fee per guest. The gr
anygoal [31]

Answer:

i Believe c

Step-by-step explanation:

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