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Salsk061 [2.6K]
3 years ago
5

A math teacher graded 45 problems in

Mathematics
1 answer:
valina [46]3 years ago
5 0
75 problems
3/5 of an hours is 36 minutes you can then do 45 over 36 mins and set it equal to x over 60 mins then you do 45 times 60 which equals 2700 then you divide 2700 by 36 and you get 75
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The monthly profit for a company that makes decorative picture frames depends on the price per frame. The company determines
Anvisha [2.4K]

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4 0
3 years ago
Solve for h. 15 = -3(h + 12) h =​
cluponka [151]

Answer:

-17

Step-by-step explanation:

15=-3(h+12)

1. Do distributive property

15=-3h-36

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H=-17

5 0
3 years ago
Help asap if you want brainliest
Marina86 [1]

Answer:

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7 0
3 years ago
What is the m2ABC?<br> a) m ABC = 15°<br> b) m2ABC = 45°<br> c) MLABC = 60°<br> d) MZABC = 75°
WITCHER [35]

Answer:

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Step-by-step explanation:

4 0
4 years ago
In January 2002, two students made worldwide headlines by spinning a Belgian euro 250 times and getting 140 heads—that’s 56%. Th
natita [175]

Answer with explanation:

The 90% confidence interval (51%, 61%) for proportion means that the proportion of getting heads lie in it.

Given : Total number of times coin is tossed = 250

Number of times they got head =140

The probability of getting a head = 0.56

The confidence interval for proportion is given by :-

p\pm z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}

Given significance level : \alpha=1-0.90=0.1

Critical value : z_{\alpha/2}=z_{0.05}=\pm1.645

Now, the 90​% confidence interval for proportion will be :-

0.56\pm (1.645)\sqrt{\dfrac{0.56(1-0.56)}{250}}\approx0.56\pm 0.0516\\\\=(0.56-0.0516,0.56+0.0516)=(0.5084,\ 0.6116)\approx(51\%,\ 61\%)

Hence, the given confidence interval is correct.

6 0
3 years ago
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