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Vikentia [17]
2 years ago
15

How to factorize 2^{n+1}+2^{n-1}?I know the answer is 5(2^{n-1}), but how do i get there?

Mathematics
1 answer:
Elina [12.6K]2 years ago
7 0

Answer:

steps below

Step-by-step explanation:

2ⁿ⁺¹ +2ⁿ⁻¹ = 2ⁿ⁻¹ (2² + 1) = 5*2ⁿ⁻¹

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4 3/5 - 4/5 = ? <br><br><br> please explain it <br><br> ixl
miskamm [114]

Answer:

\frac{19}{3 }  \: or \: 3 \frac{4}{5}

Step-by-step explanation:

Change the mixed number into a regular fraction.

\frac{23}{5}  -  \frac{4}{5}

Subtract the numerator.

\frac{19}{5}

As a mixed number:

3  \frac{4}{5}

8 0
2 years ago
Find The Surface Area
omeli [17]

A = (12 x 8 x 3) + (1/2 x 8 x 6.9) + (1/2 x 8 x 7 x 3)

A = 288 + 27.6 + 84

A = 399.6 m²

7 0
3 years ago
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4.07065 in words or written form?
MAVERICK [17]
Four and seven thousand sixty-five hundred thousandths, I believe
3 0
3 years ago
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How do you do this question it is kinda difficult to understand
Dafna1 [17]
Speed = slope of the line = 20 / 0.5 = 40 km / hr

Second part will be a line with downward slope from the end of the horizontal line Slop = 20 / 1/3 (=60 km/h) So it will pass through the 65 on horizontal axis.
4 0
2 years ago
Oof I am really confused on 13. Can someone help me with it? I’ll really appreciate it. Thanks!
Nataly [62]

Hi! I know for sure that a and d are equivalent to the expression which is not what you are looking for. This is because 11 times 8 gives you the 88 on a and if you multiply the 5 also by 8 you get 40 so a is not the answer. The reason I multiply both by the same number and got the equivalency is because, "What you do to one side, you do to the other." Same thing with d. My answer would be B because you can't change the variable to a different number. You can't just give the five the y and make it mean the same. The answer is B.

3 0
2 years ago
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