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gulaghasi [49]
2 years ago
11

 tell me how to answer this please I WILL MARK BRAINLIEST

Mathematics
1 answer:
iogann1982 [59]2 years ago
7 0

Answer:

It equals 3

Step-by-step explanation:

To solve this it is basically like a normal problem you would just take out the X in it and divide 7 by 21 which leaves you with 3.

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2a ³+10=26<br> Show the work on how you got it
Usimov [2.4K]

Answer:

a=2

Step-by-step explanation:

subtract 10 from both sides

2a^3=26-10

simplify

2a^3=16

Divivde both side by 2

a^2=16/2

simplify

a^3=8

4 0
3 years ago
f a storm window has an area of 400 square inches, what are the dimensions if the window is 12 inches wider than it is high (w x
anzhelika [568]
Well if the window is 40 x 10  the L is 52 and the w 22 
5 0
3 years ago
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A 2-column table with 5 rows. Column 1 has entries x, x, x, x, Total 100 percent. Column 2 has entries 5 dollars, 5 dollars, 5 d
earnstyle [38]

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Step-by-step explanation:

4 0
3 years ago
Words were displayed on a computer screen with background colors of red and blue. Results from scores on a test of word recall a
kherson [118]

Answer:

Yes, the background color appear to have an effect on the variation of word recall​ scores

Step-by-step explanation:

Given that results from scores on a test of word recall are given are as follows:

Two test scores have independent means and having normal distribution.

H_0: Means are equal\\H_a: Means are not equal

(Two tailed test at 5% significance level)

Group   Group One     Group Two  

Mean    15.1400 12.4200

SD              5.9100 5.4200

SEM     0.9990 0.8910

N                35       37      

The mean of Group One minus Group Two equals 2.7200

standard error of difference = 1.335

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p value = 0.0454

Since p <0.05 we reject null hypothesis

Yes, the background color appear to have an effect on the variation of word recall​ scores

5 0
3 years ago
5 Simplify: (-10 - X) - x
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