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2 years ago

Is x = 3 a solution to the equation x + 7 = 11?

Mathematics

2 answers:

sineoko [7]2 years ago

7 0

Answer:

The correct answer is A. No, because 3 + 7 = 11 is not true.

Step-by-step explanation:

Just like the answer says, if x =3, then that would mean that 3 + 7 = 11. Since

3 + 7 =10, this statement is not true.

Therefore, the correct answer is A.

Hope this helps! :D

olya-2409 [2.1K]2 years ago

3 0

Answer:

Step-by-step explanation:

3+7 is 10, not 11. Therefore, x cannot be 3.

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You are correct. You divide 360 over the exterior angle measure to get 360/72 = 5

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Problem 11

x = 33 is correct as this angle is an alternate interior angle pair with the 33 degree angle up top

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3 years ago

Expand and simplify 9w(3x-4y)-5w(x+y)

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3 years ago

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kati45 [8]

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3 years ago

A past survey of students taking a standardized test revealed that % of the students were planning on studying engineering in c

Angelina_Jolie [31]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The 95% confidence interval is $-0.00870$

Step-by-step explanation:

From the question we are told that

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The first proportion $\r p_1 = 0.084$

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The second proportion is $\r p_2 = 0.092$

Given that the confidence level is 95% then the level of significance is mathematically represented as

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Now using the formula from the question to construct the 95% confidence interval we have

$(\r p_1 - \r p_2 )- z_c \sqrt{ \frac{\r p_1 \r q_1 }{n_1} + \frac{\r p_2 \r q_2 }{n_2} }$

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=> $\r q = 0.916$

and

$\r q_2 = 1 - \r p_2$

=> $\r q_2 = 1 - 0.092$

=> $\r q_2 = 0.908$

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3 years ago

Two quantities, x and y, are directly proportional. If x is halved, what happens to y?

Contact [7]

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3 years ago

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