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3 years ago

HELP MATH QUESTION GEOMETRY

Mathematics

1 answer:

schepotkina [342]3 years ago

3 0

Angle COD equals angle AJL

Angle DCO equals Angle LAJ

Side OC equals side JA is all true expect for the first one

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Solve for x: (8 + x)^-3= 64

meriva

X would be -31/4 and (-65 plus or minus i root 3)/8

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

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3 years ago

How many times larger is 14000 than 140

vampirchik [111]

Answer:

100x

Step-by-step explanation:

140 x 100 = 14,000

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3 years ago

Read 2 more answers

what is the mean absolute deviation for the following numbers 40 50 60 60 60.5 60.5 70 70 70.5 70.5 70.5 80.5 80.5 80.5 90

cestrela7 [59]

Your answer should be 86.68.
Mean: you add up all the numbers and divide it by the total of the numbers, in this case there are a total of 11. I added all of them up and got 953.5 and divided by 11. Hoped i helped

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3 years ago

A recliner that costs $150 was marked up by 100%.

sveta [45]

Recliner:
Markup $10
selling price $300

computer:
markup $19.20
selling price $67.20

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3 years ago