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dybincka [34]
3 years ago
15

Please solve this with the steps.

Mathematics
2 answers:
alex41 [277]3 years ago
8 0
3/4x + 9/4 = 9

Subtract 9/4 from both sides.

3/4x = 9 - 9/4

Simplify.

3/4x = 36/4 - 9/4

Simplify.

3/4x = 27/4

Multiply both sides by 4/3.

x = 27/4 × 4/3

Simplify.

x = 9

~Hope I helped!~
bija089 [108]3 years ago
5 0
Subtract 9/4 from both sides
3/4x=6 3/4
Multiply them by 4/3
X=9
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Answer:

As Z, it is possible to reject null hypotesis. It means that the local mean height is less tha 0.7 m with a 5% level of significance.

Step-by-step explanation:

1. Relevant data:

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2. Hypotesis testing

H_{0}=\mu=0.70

H_{1} =\mu< 0.70

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4. Find the test statistic:

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Z=\frac{0.65-0.70}{0.20/\sqrt{40}}\\Z=-1.58

5. Hypotesis Testing

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As Z, it is possible to reject null hypotesis. It means that the local mean height is less tha 0.7 m with a 5% level of significance.

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3 years ago
30% of number A is 10 more than 20% of number B. 30% of number B is 35 more than 20% of number A. Find the numbers A and B.
anygoal [31]

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B =65.28

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From equation (i)

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