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3 years ago

PLEASE HELP I don’t understand Please explain and answer

Mathematics

1 answer:

STatiana [176]3 years ago

8 0

a) You put the scientific notation in expanded form, 671,000,000. From there just divide it by 60. 11,183,333.333 miles per minute.

b) Take the miles/minute rate and multiply it by 8.3; 92821666.6667 miles per 8.3 minutes.

Hope this helps :)

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3 years ago

Solve x2 − 10x = −13.

aev [14]

Answer:

Step-by-step explanation:

First, let's rearrange the given equation into something more recognizable. If we add 13 to both sides, we now have the polynomial $x^{2}-10x+13$ . We can now use the quadratic formula to solve.

Remember that the quadratic formula is

$\frac{-b+/-\sqrt{b^{2}-4ac } }{2a}$

Substitute the numbers from the equation into the formula.

$\frac{-(-10)+/-\sqrt{(-10)^{2}-4(1)(13) } }{2(1)}$

Simplify:

$\frac{10+/-\sqrt{100-52} }{2}$

$\frac{10+/-\sqrt{48} }{2}$

Here, I'm going to assume that there was a mistype in option B because if we divide out the 2 we end up with $5+/-\sqrt{48}$ .

Hope this helps!

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3 years ago

WILL GIVE BRAINLIEST!!! (look at photo if confused)

hram777 [196]

Answer:

4(x + 5) = 4x + 20 is C

2 + 7x = 7x + 2 is A

3(x multiplied 4) = (3x) x 4 is B

Step-by-step explanation:

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3 years ago

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The radius of a circle is 6 in. Find the circumference to the nearest tenth.

ycow [4]

Answer:

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Step-by-step explanation:

The orginal answer is 37.699

But you want to round the tenth

So 9 to the 6 you want to rasie the score

6 turns into a 7 and the numbers behind it (9 and the other 9) turn into a zero

37.7 or 37.700

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3 years ago

How to Convert 93 L to milliliters

s344n2d4d5 [400]

Answer:

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Step-by-step explanation:

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