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Vera_Pavlovna [14]
3 years ago
13

2x+5=15 Solve for x a.5 b.2 c.7 d.10

Mathematics
1 answer:
Black_prince [1.1K]3 years ago
3 0

Answer:

A.5

Step-by-step explanation:

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Whats the next number 2 7 8 3 12 9
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2 years ago
A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has d
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Answer:

Read step by step explanation

Step-by-step explanation:

The owner already knows that the limit for the average time delivered pizzas is 38 minutes. So we conclude

1.-The resulting mean from sample data ( x ) ( 27 customers) need to be smaller than 38 minutes, any value of sample above 38 minutes means more time for the delivery action and will indicate a failure for the future project

2.-As sample size is smaller than 30 the test has to be  t-student one tail test to the left

Test hypothesis

Null hypothesis                       H₀                  x  = 38

Alternative hypothesis           Hₐ                  x  <  38

We should test at a significance level α  = 0,05       (α = 5%)

If the result of the test is to accept  H₀  delivery project won´t be implemented, if on the other hand, H₀ is rejected then in the condition of the alternative hypothesis we accept Hₐ the sample indicates that we have a smaller average time than 38 minutes.

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2 years ago
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3 years ago
Simplify 2x + 5x + 4x
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Answer:

11x

Step-by-step explanation:

Forget about the x until the end and add the numbers together.

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Read 2 more answers
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