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3 years ago

Help i need it badly

Mathematics

2 answers:

melisa1 [442]3 years ago

7 0

Yeah same what you need help on tho

makkiz [27]3 years ago

5 0

I think 2 because it just makes the most sense because 3+2 and there was a five on the other one

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Find the value of x such that the data set has the given mean.

sineoko [7]

Answer:

127

Step-by-step explanation:

112 × 6 = 672

100 + 121 + 105 + 111 + 108 = 545

672 - 545 = 127

6 0

3 years ago

What is the sum of the series? 4 ∑k=1 (2k^2−4)

larisa86 [58]

The sum of the series $\sum_{k=1}^{4}\left(2 k^{2}-4\right)$ is 44.

Step-by-step explanation:

The given series is $\sum_{k=1}^{4}\left(2 k^{2}-4\right)=44$

To find the sum of the series, we need to substitute the values for k in the series.

$\sum_{k=1}^{4}\left(2 k^{2}-4\right)=\left[2(1)^{2}-4\right]+\left[2(2)^{2}-4\right]+\left[2(3)^{2}-4\right]+\left[2(4)^{2}-4\right]$

Now, simplifying the square terms, we get,

$[2(1)-4]+[2(4)-4]+[2(9)-4]+[2(16)-4]$

Multiplying the terms,

$[2-4]+[8-4]+[18-4]+[32-4]$

Subtracting the values within the bracket term, we get,

$-2+4+14+28$

Now, adding all the terms, we get the sum of the series,

$\sum_{k=1}^{4}\left(2 k^{2}-4\right)=44$

Thus, the sum of the series is $\sum_{k=1}^{4}\left(2 k^{2}-4\right)=44$

8 0

3 years ago

Divide: 0.364 ÷ 7<br> 5.2<br> 0.52<br> 0.052<br> None of these is correct.

Lena [83]

Step-by-step explanation:

0.364 ÷ 7 = 0.052

0 3

the third answer option is correct.

4 0

3 years ago

Read 2 more answers

PLEASE HELP!!!!!! WHATS THE ANSWER

Paladinen [302]

Answer:

Step-by-step explanation:

pls mark brainliest

7 0

2 years ago

Juan spent $7.00 of the $20.00 in his wallet. Which decimal represents the fraction of the $20.00 Juan spend?

swat32

Answer:

Juan still has $13.00 left after spending $7.00 as a percentage that is 35% and as a fraction that is 35/100 or 0.35.

Step-by-step explanation:

I hope I helped in any way.

5 0

3 years ago

Read 2 more answers