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11111nata11111 [884]
3 years ago
10

Please help me solve---- -20-(4x-1)=-15

Mathematics
1 answer:
nikklg [1K]3 years ago
7 0
I hope this helps you -20-(4x-1)=-15 -20-4x+1=-15 -20+1+15=4x -4=4x x=-1
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Katie has read 34% of a book. If she read 85 pages, does she have more than or fewer than 125 pages left to read? Explain
mestny [16]
Determine the percent of book she hasn't read.
percent = 100% - percent she has read
percent = 100% - 34%
percent = 66%
She hasn't read 66% of the book.

Find the amount of page she hasn't read.
page = $ \dfrac{\text{percent hasn't read}}{\text{percent has read}} \times\ \text{page has read}$
page = $ \dfrac{66\%}{34\%} \times\ 85$
page = $ \dfrac{66}{34} \times\ 85$
page = \dfrac{5,610}{85}
page = 165

The number of page she hasn't read is 165. It's more than 125.
3 0
4 years ago
What is the least common multiple (LMC) of 8 and 12?
IRINA_888 [86]
Hey There!

If i am doing this the least common multiple can either be 
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Or
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3 0
4 years ago
An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. The standard deviation of completi
Sholpan [36]
<h2><u>Answer with explanation:</u></h2>

Let \mu be the population mean.

Null hypothesis : \mu=12

Alternative hypothesis : \mu

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

Given : n=33 > 30 , so we use z-test.

Test statistic : z=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

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Using z-value table,

P-value for left tailed test =P(z

Since , the p-value (0.0020524) is less than the 0.05 level of significance, it means we reject the null hypothesis.

Therefore, we have enough evidence to support the claim that the mean completion time has decreased under new management.

7 0
3 years ago
Line ef is tangent to circle g at point h. segment gh is a radius of circle g. what can be concluded about triangle fhg?
solong [7]
We know that

A line tangent to a circle is perpendicular to the radius to the point of tangency.
so
<span>Line ef is </span>perpendicular to the segment gh

hence
Triangle FHG is a right triangle
3 0
3 years ago
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Eighly percent of the tickets for the baseball game on july 4th have been sold. there are 20,00 tickets. how many havr been sold
ki77a [65]
So we use 80% to multiply 20,000
we get 16000
the answer is just 16,000
6 0
4 years ago
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