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anygoal [31]
3 years ago
11

Which of the following expressions is equivalent to −56−13? Select all that apply. A. (−56)⋅(−3) B. (−65)⋅(−3) C. (−65)⋅(−13) D.

(56)÷(13) E. 56⋅(−3)
please answer soon, in the middle of a test, thx
Mathematics
1 answer:
Elden [556K]3 years ago
7 0

Answer:

A, D, and E.

Step-by-step explanation:

Sorry if wrong but im pretty sure. you flip the second fraction so it becomes a three. the divide bacomes a multiply so that should be correct

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In 2011, a U.S. Census report determined that 71% of college students work. A researcher thinks this percentage has changed sinc
coldgirl [10]

Answer:

Note: The full question is attached as picture below

a) Hо : p = 0.71

Ha : p ≠ 0.71

<em>p </em>= x / n

<em>p </em>= 91/110

<em>p </em>= 0.83.

1 - Pо = 1 - 0.71 = 0.29.

b) Test statistic = z

= <em>p </em>- Pо / [√Pо * (1 - Pо ) / n]

= 0.83 - 0.71 / [√(0.71 * 0.29) / 110]

= 0.12 / 0.043265

= 2.77360453

Test statistic = 2.77

c) P-value

P(z > 2.77) = 2 * [1 - P(z < 2.77)] = 2 * 0.0028

P-value = 0.0056

∝ = 0.01

P-value < ∝

Reject the null hypothesis.  There is sufficient evidence to support the researchers claim at the 1% significance level.

6 0
3 years ago
Is this righ or not please say me​
Ksju [112]

Answer:

Step-by-step explanation:

It's right

6 0
2 years ago
Read 2 more answers
Which equation represents a line that passes through (4, left-parenthesis 4, StartFraction one-third EndFractin right-parenthesi
sladkih [1.3K]

The equation represents a line that passes through(4, 1/3) and has a slope of 3/4 option A; y - 1/3 = 3/4 ( x - 4).

<h3>What is the Point-slope form?</h3>

The equation of the straight line has its slope and given point.

If we have a non-vertical line that passes through any point(x1, y1) has gradient m. then general point (x, y) must satisfy the equation

y-y₁ = m(x-x₁)

Which is the required equation of a line in a point-slope form.

we know that            

The equation of the line into point-slope form is equal to                        

y-y₁ = m(x-x₁)

             

we have          

(x₁, y₁) = (4, 1/3)

m = 3/4

 

substitute the given values                

y-y₁ = m(x-x₁)

y - 1/3 = 3/4 ( x - 4)

therefore,

y minus StartFraction one-third EndFraction equals StartFraction 3 Over 4 EndFraction left-parenthesis x minus 4 right-parenthesis.(x – 4)

Thus, option A is correct.

Learn more about slope;

brainly.com/question/13458632

#SPJ1

4 0
1 year ago
Choose a point on the terminal side of theta theta= 5pi/4
adell [148]

Answer:    

Step-by-step explanation:

3 0
3 years ago
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Studentka2010 [4]
Work in fractions of the pool the pumps can drain per hour:-

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8 0
3 years ago
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