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3 years ago

Solve for X Can you please help

Mathematics

1 answer:

valentina_108 [34]3 years ago

7 0

Answer:

x = 10

Step-by-step explanation:

$5x + 19 = 7x - 1 \\ (corresponding \: \angle s) \\ \\ 5x - 7x = - 1 - 19 \\ \\ - 2x = - 20 \\ \\x = \frac{ - 20}{ - 2} \\ \\ x = 10$

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How many factors of 48 are not prime numbers

nalin [4]

48 has the following 10 factors: <span>1, 2, 3, 4, 6, 8, 12, 16, 24, 48
Of these, 1,2 and 3 are primes. The other 7 are not primes.</span>

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3 years ago

Least to greastest awnser

Morgarella [4.7K]

2) -88, -45, 5, 40

4) -45, -31, 20, 49

6) -74, -63, -45, 38

8) 18, 27, 27, 58

10) -60, -49, -40, 9

12) -45, -18, 80, 82

The bigger negative numbers are the least because negative numbers work the opposite way around of positive numbers. :)

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3 years ago

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Serggg [28]

Answer:

y = 8x-3

Step-by-step explanation:

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2 years ago

Simify

Harlamova29_29 [7]

Step-by-step explanation:

1. -9x - 3 - 3 + 2x

-7x - 6

3. 3 - 4x - 7x - 2

-11x - 1

4. 5x - 1 + 3 + 2x

7x + 2

4 0

2 years ago

9.50 One way to evaluate the effectiveness of a teaching assistant is to examine the scores achieved by his or her students on a

EleoNora [17]

Answer:

Step-by-step explanation:

Given that a professor sets a standard examination at the end of each semester for all sections of a course. The variance of the scores on this test is typically very close to 300.

$H_0: s^2 = 300\\H_a: s^2 \neq 300$

(Two tailed test for variance )

Sample variance =480

We can use chi square test for testing of hypothesis

Test statistic = $\frac{(n-1)s^2}{\sigma^2} \\=62.4$

p value = 0.0100

Since p <0.05 our significance level, we reject H0.

The sample variance cannot be claimed as equal to 300.

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3 years ago