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padilas [110]
4 years ago
5

Please help!!! Please?

Mathematics
1 answer:
VikaD [51]4 years ago
6 0
Follow the order of operations, PEMDAS

First, simplify your Parentheses:
57 - 6^{2} / 3 x 4

Then, simplify your exponent:
57 - 36 / 3 x 4

Then, divide/multiply from the left to the right:
57 - 12 x 4
57 - 48
Then, just subtract, and you get your answer, which is 9, choice A
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Between which two consecutive whole numbers does \sqrt{78} 78 ​ lie? Fill out the sentence below to justify your answer and use
Artyom0805 [142]

Answer:

A. 8 and 9

Step-by-step explanation:

Between which two consecutive whole numbers does √ 78 lie?

a.

8 and 9

b.

6 and 7

c.

9 and 10

d.

7 and 8

A. 8 and 9

8^2 = 8 × 8 = 64

9^2 = 9 × 9 = 81

B. 6 and 7

6^2 = 6 × 6 = 36

7^2 = 7 × 7 = 49

C. 9 and 12

9^2 = 9 × 9 = 81

12^2 = 12 × 12 = 144

D. 7 and 8

7^2 = 7 × 7 = 49

8^2 = 8 × 8 = 64

The correct answer is A. 8 and 9

6 0
3 years ago
Living with parents: The Pew Research Center reported that 36% of American Millennials (adults ages 18-31) stll live at home wit
Lera25 [3.4K]

Answer:

A.

\mathbf{The \  sample \  comes  \ from \  a \  population \ of \ Millennial \ students } \mathbf{at \  their \ campus\ where \ 3 6\%\ still\ live\ at\ home\ with\ their \  parents}

Step-by-step explanation:

From the given information.

The proportion of American Millennials still with their parents = 0.36

The sample size  = 300

Sample proportion = 0.43

Level of significance = 0.006

P-value = 0.006

Null hypothesis:

\mathbf{H_o: Of  \ Millennial \ students  \ at \ their \ campus, \ 36\% \  }\mathbf{ live \ at \  some  \ with  \ their \  parents . }

\mathbf{H_a: More \ than \ 36\%  \ of  \ Millennial \ students  \ at \ their \ campus \ live \ at \ home }\mathbf{ \ with \ their \ parents}

The required task is to determine the assumption about the sample that underlies the hypothesis test from the given options.

A.

\mathbf{The \  sample \  comes  \ from \  a \  population \ of \ Millennial \ students } \mathbf{at \  their \ campus\ where \ 3 6\%\ still\ live\ at\ home\ with\ their \  parents}

This is because the student wants to check if the null hypothesis ( which states that of Millennial students at their campus, 36% live at home with their parents) is correct or not.

7 0
3 years ago
60. The distance between two stars increases at a rate
madreJ [45]
It is equal to 9.461 x 10 km
5 0
3 years ago
What is the simplified form of (- 7+ 8i) - (- 5i + 4i?)?
ruslelena [56]

Answer: 7-

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Justin wants to buy a new bicycle, which costs $266.52. His parents have promised to contribute one-fourth of the cost of the bi
Oliga [24]

Answer:

$199.89

Step-by-step explanation:

The bike costs 266.52

The parents are contributing one fourth of this (1/4)

We need to find 1/4th of 266.52

Divide 266.52 by 4 to find out how much Justin's parents are contributing to the bike

The answer is 66.63

Now subtract 66.63 from 266.52

Justin has to pay a total of 199.89

5 0
3 years ago
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