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Alex787 [66]
3 years ago
6

What the answer 40 points plz and brainliest

Mathematics
2 answers:
steposvetlana [31]3 years ago
7 0

Answer:

Number of widgets made per hour by Machine A: 30/6=5

Number of widgets made per hour by Machine B: 64/8=8

Number of widgets made per hour by Machine C: 18/3=6

Machine B was the fastest.

pantera1 [17]3 years ago
4 0

Answer:

Widget per hours for A: 5

Widgets per hour for B: 8

Widgets per hour for C: 6

Widget B is the fastest

Step-by-step explanation:

A: 30 /6 = 5

B: 64/8 = 8

C: 18/3 = 6

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40 square feet, since 4x10 is equal to 40.
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3 years ago
Fill in the boxes. 300 000 cm =____ m=____km
Tresset [83]

Answer:3000m and 3km

Step-by-step explanation:

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8 0
3 years ago
In a restaurant, the proportion of people who order coffee with their dinner is p. A simple random sample of 144 patrons of the
mote1985 [20]
<h2>Answer with explanation:</h2>

Given : In a restaurant, the proportion of people who order coffee with their dinner is p.

Sample size : n= 144

x= 120

\hat{p}=\dfrac{x}{n}=\dfrac{120}{144}=0.83333333\approx0.8333

The null and the alternative hypotheses if you want to test if p is greater than or equal to 0.85 will be :-

Null hypothesis : H_0: p\geq0.85   [ it takes equality (=, ≤, ≥) ]

Alternative hypothesis : H_1: p  [its exactly opposite of null hypothesis]

∵Alternative hypothesis is left tailed, so the test is a left tailed test.

Test statistic : z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

z=\dfrac{0.83-0.85}{\sqrt{\dfrac{0.85(1-0.85)}{144}}}\\\\=-0.561232257678\approx-0.56

Using z-vale table ,

Critical value for 0.05 significance ( left-tailed test)=-1.645

Since the calculated value of test statistic is greater than the critical value , so we failed to reject the null hypothesis.

Conclusion : We have enough evidence to support the claim that p is greater than or equal to 0.85.

8 0
3 years ago
1. A cooler contains 13 and 1/2 cups of fruit juice. How many pints of fruit juice does the cooler contain? (Hint: 1 pint = 2 cu
nikklg [1K]
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6 0
3 years ago
Read 2 more answers
What is $65.25 - 15% =?
ella [17]

Answer:

$55.36

Step-by-step explanation:

15% of 65.25 is 9.89

then that'd be 65.25 - 9.89 = 55.36

hope this helps/is right.

6 0
3 years ago
Read 2 more answers
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