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2 years ago

12

Help ASAP with the question.

2 answers:

givi [52]2 years ago

6 0

The answer is 5 x 10^10

Hope this helped! :)

Darya [45]2 years ago

6 0

Subtraction in scientific notation is pretty similar to adding, first because the exponents are the same, you can subtract 4 from 9 and =get 5 and because the exponents need to be the same, you just keep 10^10

Your final answer is 5x10^10

Hope this helped!

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Solve equation.<br> 2x-5y=20

Novay_Z [31]

If you solve for x you get:
x=(<span><span><span>5/2)</span>y</span>+<span>10
</span></span>
If you solve for y you get:
y=(<span><span><span>2/5)</span>x</span>−<span>4</span></span>

5 0

3 years ago

SpyIntel [72]

Answer:

$230

Step-by-step explanation:

100%-20%=80%

80%=184

1%=184÷80=2.3

100%=2.3x100=$230

Hope this helps! Thanks.

5 0

2 years ago

Read 2 more answers

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crimeas [40]

B is the correct answer

8 0

3 years ago

Brian multiplied his average speed of 14.73 miles per hour by the amount of time he spent cross-country skiing. His product was

Gekata [30.6K]

Answer:

12.2*1=12.2

12.2*0.45=5.49

5.49+12.2=17.69

Step-by-step explanation:

5 0

2 years ago

Find four geometric means between 25 and 800.

SVEN [57.7K]

Actually, you have to find four missed terms of geometrical sequence. Denote

$a_1=25,\\ a_6=800$

and r - ratio, then

$a_2=a_1\cdot r=25r,\\a_3=a_1\cdot r^2=25r^2,\\a_4=a_1\cdot r^3=25r^3,\\a_5=a_1\cdot r^4=25r^4,\\a_6=a_1\cdot r^5=25r^5$ .

Since $a_6=800$ , you have that $800=25r^5$ , then

$r^5=\dfrac{800}{25} =32,\\r=2$ .

Now substitude r=2 in each of unknown 4 terms:

$a_2=25\cdot 2=50,\\a_3=25\cdot 2^2=100,\\a_4=25\cdot 2^3=200,\\a_5=25\cdot 2^4=400$ .

Answer: four geometric means between 25 and 800 are 50, 100, 200, 400.

8 0

3 years ago