3 years ago

How to write in scientific notation

Mathematics

1 answer:

Paul [167]3 years ago

3 0

The answer to that is 4 × 10 ².

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The sum of seven times a number— PLEASE HELP!

castortr0y [4]

Answer:

x = 6

y = 4

Step-by-step explanation:

Let the two numbers be x and y

Condition 1:

7x+3y = 54 -----------(1)

Condition 2:

x = 2+y -----------------(2)

Putting (2) in (1)

=> 7(y+2)+3y = 54

=> 7y+14+3y = 54

=> 10y = 54-14

=> 10y = 40

Dividing both sides by 10

=> y = 4

Now putting y = 4 in eq(2)

=> x = 2+4

=> x = 6

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3 years ago

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Helen [10]

Answer:

B) $45\pi cm^{2}$

Step-by-step explanation:

$A=\frac{\pi r^{2}(central. Angle) }{360} =\frac{\pi (9)^{2}(200) }{360} =\frac{\pi (81)(200)}{360}=45\pi cm^{2}$

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2 years ago

Help! 250(1+0.1)^15 = ??

olganol [36]

Using PEMDAS this is the answer I got 1,042.5 :)

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3 years ago

What is the polar form of the complex number 4−6i? Keep z in its simplest radical form and round θ to the nearest degree.

solong [7]

Answer:

Step-by-step explanation:

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a roofer is going to drop his hammer to the ground from the roof after making sure the area is clear. the roof is a 25ft high. h

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