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3 years ago

What is -2(4n - 1) +15 I think that it is -8n - 13 but i am not sure plz help

Mathematics

1 answer:

ANEK [815]3 years ago

8 0

Answer: Your right!

-8n-13

Step-by-step explanation:

-2(4n-1)+15=

-8n+2-15

Combine like terms- 2-5= -13

so -8n-13

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Gio ran 5 miles yesterday. This distance is 80% of the distance he planned to run.

aleksklad [387]

Answer:

Gio planned to 6 miles.

Step-by-step explanation:

this is because 5 - 80% = 1

which means he wanted to run 1 more mile

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Multiply (5 + 3i)(5 − 3i) 16 + 15i 16 − 15i 16 34

Annette [7]

Answer:

(5 + 3i)(5 − 3i) = 34

Step-by-step explanation:

The multiplication of two identical binomials who have different symbol, can be solved using the factoring case of a difference of squares:

$(a-b).(a+b)=a^{2}-b^{2}$

So, in this case:

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Remember that $i=\sqrt{-1}$

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3 years ago

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The following three shapes are based only on squares, semicircles, and quarter circles. Find the perimeter and the area of each

MakcuM [25]

The perimeter = 4 * length of a semicircle of radius 5 == 4* pi * 5 = 20 pi cm

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3 years ago

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nexus9112 [7]

Answer:

option 2: $\large \frac{10}{12}$

Step-by-step explanation:

when dividing fractions, you can actually multiply them together by the reciprocal of the second one. (reciprocal is just flipping the fraction)

so, $\frac{2}{3}$ ÷ $\frac{4}{5}$

becomes $\frac{2}{3} * \frac{5}{4}$

to multiply fractions together, just multiply the top and bottom.

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3 years ago

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shtirl [24]

Well not sure what you are asking, but If it is what I think it is, it would go like this:
2
(9^2)

Then the answer should be

9^4 since we multiply the exponents.

If you mean this...

3^2....It would be same as 3 x 3 which we should know is equal to nine.

Hope I helped! (Be sure to thank me!)

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