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3 years ago

X(x+4)=x^+4x

Mathematics

1 answer:

koban [17]3 years ago

5 0

1(1+4)=1^(4*1)
5=1 No

2(2+4)=2^(4*2)
12=256 No

3(3+4)=3^(4*3)
21=531441 No

None

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Bria drank an 8-ounce glass of water from a 32-ounce container of water. How many more 8 ounce glasses were left?

marusya05 [52]

There were 3 8-ounce glasses left, because 32 ounces - 8 ounces = 24 ounces, and 24/8 = 3. Hope this helped.

4 0

4 years ago

Evaluate using the finite geometric sum formula

Sever21 [200]

Answer:

$S_9=-18.703$ .

Step-by-step explanation:

The given series is,

$\sum_{i=1}^9(-\frac{1}{2})^{i-1}$

When we substitute $i=1$ , we get the first term, which is $a_1=-28(-\frac{1}{2})^{1-1}$

This implies that,

$a_1=-28(-\frac{1}{2})^{0}$

$a_1=-28(1)=-28$ .

The common ratio is

$r=-\frac{1}{2}$

The finite geometric sum is given by the formula,

$S_n=\frac{a_1(r^n-1)}{r-1} , -1\:$ .

Since there are 9 terms, we find the sum of the first nine terms by putting $n=9$ in to the formula to get,

$S_9=\frac{-28((-\frac{1}{2})^9-1)}{-\frac{1}{2}-1}$ .

$S_9=\frac{-28((-\frac{1}{512})-1)}{-\frac{3}{2}}$ .

$S_9=\frac{-28(-\frac{513}{512})}{-\frac{3}{2}}$ .

$S_9=-28(\frac{171}{256})$ .

$S_9=-\frac{1197}{64}$ .

$S_9=-18.703$ .

The correct answer is B

4 0

3 years ago

Read 2 more answers

kali runs 10 laps around a track each day. Each lap around the track is 400 meters. How many will it take kali to run a total of

Flauer [41]

Answer:

3 days

Step-by-step explanation:

Kali runs 10 laps around a track each day, and each lap is 400 meters. So, the first step would be:

10 • 400 = 4,000

That means Kali runs 4,000 meters each day.

Now, there are 1,000 meters in 1 kilometer. This means he runs 4 kilometers each day, and we're trying to get to 12 kilometers.

The final step is to divide. 12/4 = 3

So, it would take 3 days for him to run a total of 12 kilometers.

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2 years ago

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Answer:

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Step-by-step explanation:

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4 years ago

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Answer: 86m cubed

Step-by-step explanation:

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