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exis [7]
3 years ago
9

What is..Simplify 15.8

Mathematics
1 answer:
ycow [4]3 years ago
5 0

Answer:

simplify of 15.8 is 16

Step-by-step explanation:

please mark me as brainliest

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a student has some $1 and $5 bills in his wallet he has a total of 12 bills that are worth $32 how many of each bill does he hav
pav-90 [236]
Five $5 bills, and seven $1 bills :)
7 0
3 years ago
What is the value of x that makes l1||l2
Sholpan [36]

Answer: 10

Step-by-step explanation:

By the alternate interior angles theorem,

4x=2x+20\\2x=20\\x=10

3 0
2 years ago
A government watchdog association claims that 70% of people in the U.S. agree that the government is inefficient and wasteful. Y
nata0808 [166]

Answer:

Option D) There is sufficient evidence that the true population proportion is not equal to 70%.        

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 1165

p = 70% = 0.7

Alpha, α = 0.02

Number of people who agreed , x = 746

First, we design the null and the alternate hypothesis  

H_{0}: p = 0.7\\H_A: p \neq 0.7

This is a two-tailed test.  

Formula:

\hat{p} = \dfrac{x}{n} = \dfrac{746}{1165} = 0.64

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

Putting the values, we get,

z = \displaystyle\frac{0.64-0.7}{\sqrt{\frac{0.7(1-0.7)}{1165}}} = -4.46

Now, z_{critical} \text{ at 0.02 level of significance } = \pm 2.33

Since,  

Since, the calculated z statistic does not lie in the acceptance region, we fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.

Thus, there is enough evidence to support the claim that the true proportion differs from 70%.

Option D) There is sufficient evidence that the true population proportion is not equal to 70%.

3 0
3 years ago
When water cycles through the earth, it only stays in the atmosphere for about 9 days, but it can stay in the ocean for over 3,0
Delicious77 [7]

Answer:

Because the volume of water is higher in oceans than atmosphere

Step-by-step explanation:

Critically looking at water cycle, we could infer that water can exist for a few days in the atmosphere because it also resides on land as well.

The atmosphere is basically a way for the ocean water to run back on land and run off right back into the oceans. It won't come back right away depending squarely on where it goes, but there is a lifetime out of the ocean that balances these times out.

The contributing factor factor to this difference is mainly the volume of water in ocean is higher and evaporation occurs slowly.

Find attached below the picture of water cycle.

6 0
4 years ago
The rainfall, r, is inversely proportional to the water shortage, s, in a city. If the rainfall in the city is 40 inches, there
kakasveta [241]
This is the concept of proportionality, to model the above information we proceed as follows;
given r is inversely proportional to water shortage, then:
r α 1/s
hence;
r=k/s
where;
k is constant of proportionality;
k=rs
thus when r=40 inches and s=200 million then:
k=(40*200) million
=8000 million
hence the formula for rainfall will be;
r=(8000 million)/s



8 0
4 years ago
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