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IrinaK [193]
3 years ago
10

(2x10^-2)(4x10^-3) scientific notation

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
8 0

Answer:

<h2>8 × 10⁻⁶</h2>

Step-by-step explanation:

(2\times10^{-2})(4\times10^{-3})\\\\=(2\times4)(10^{-2}\times10^{-4})\qquad\text{use}\ a^n\times a^m=a^{n+m}\\\\=8\times10^{-2+(-4)}\\\\=8\times10^{-6}

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What is the period of the sine funtion y = sin (2x) ?
Margarita [4]

Answer: a

Step-by-step explanation:

2x=2\pi

x=\pi ==> Period: \pi ==> a

8 0
2 years ago
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11.1.30<br> How many three-digit even numbers are possible if the leftmost digit cannot be zero?
Ann [662]

The total number of 3 digit even numbers is 450

Step-by-step explanation:

Step 1 :

We need to determine the  number of 3 digit numbers which is even and the leftmost digit is not zero .

The  3 digits with left most digit not equal to zero starts from 100 and goes up to 998

If we consider only the even 3 digit numbers in this interval, this would form an arithmetic progression with the first number a = 100 and the common difference d = 2.

Step 2:

The last number l  in this series is 998 .

So we have

a = 100

l = 998

d = 2

The nth term in the arithmetic progression is given by a + (n-1) d

so substituting the above values we get

100 + (n-1) 2 = 998

2n = 900  => n = 450

Step 3 :

Answer :

The total number of 3 digit even numbers is 450

4 0
3 years ago
If f(x)=2x²-x-6 and g(x)=x²-4, find f(x)÷g(x)
GuDViN [60]
Fx=2x2-x-6 Gx=x2-4
Fx÷Gx
2x2-x-6/x2-4
Simplify
2x+3 x-2/ x-2 x+2
You can cancel out x-2 since they are on both top n bottom
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5 0
3 years ago
Solve for x. -6 = x – 35
shepuryov [24]

Answer:

The answer is x=29

Step-by-step explanation:

-6 = x – 35

=-6+35=x-35+35

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8 0
3 years ago
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Using the diagram, find sin B. Express your answer as a decimal rounded to the nearest hundredth, such as .86 or 0.86.
inessss [21]
Hi, thank you for posting your question here at Brainly.

This problem could be solved using the Law of Cosines, since we are given with the three sides. The equation goes,

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24^2 = 7^2 + 25^2 - 2(7)(25)cosB

Then B = 73.7 degrees. Therefore sinB or sin(73.7) = 0.96.
4 0
3 years ago
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