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3 years ago

What is the answer.... Because I don't get the answer for the one that pops up

Mathematics

2 answers:

Ahat [919]3 years ago

6 0

Yup it's 52.5
180/24=7.5
7.5x7=52.5

RUDIKE [14]3 years ago

4 0

24/7 = 180/x....24 ft to 7 seconds = 180 ft to x seconds
cross multiply
(24)(x) = (180)(7)
24x = 1260
x = 1260/24
x = 52.5....so it will take 52.5 seconds

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Need help with this geometry work show work hard for me pls answer fast due now

natita [175]

Answer:

see explanation

Step-by-step explanation:

(1)

The sum of the 3 angles in a triangle = 180° , thus

a + b + c = 180

(2)

adjacent angles are supplementary, thus

b + d = 180

(3)

From (1) and (2)

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4 0

3 years ago

Hector found twice as many seashells as

MissTica

Hector = 2s or h/2
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3 years ago

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KatRina [158]

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5 0

3 years ago

Dr. Wong has a table of data in her veterinary office that shows the average lifespans and weights of several popular dog breeds

belka [17]

Answer:

1. The heavier the dogs are, the shorter lifespan they have.

2. The lifespan of a bloodhound is on average 10 years long

3. Number 2

Step-by-step explanation:

#1 explination: Since its obvious that the graph angles downwards as it goes towards the left, and because as you go to the left you get heavier dogs, put 2 and 2 together and you get my answer.

#2 explination: We see 3 dots around 90 pounds, one that lives 11 years, and 2 that live 10 years. Since we need to be accurate, we need to find the average of 10, 11, and 10. (10+10+11)/3=10.33. Now we round to 10, so 10 is our answer.

#3 explination: Since there is a bloodhound that lives to be 14, we have two answers, 2 or 3. 1 doesn't work since if Alfonso doesn't have good estimation, the first two questions wouldn't matter *the more you know*. Since we see no unusual pattern between any of the three dots I mentioned earlier, Dani must of forgotten her dog's age (probably because of that dog years thing.)

4 0

3 years ago

Read 2 more answers

A survey showed that among 785 randomly selected subjects who completed four years of college, 144 of them are smokers and 84 do

ollegr [7]

Answer:

We conclude that the rate of smoking among those with four years of college is less than the 27% rate for the general population.

Step-by-step explanation:

We are given that a survey showed that among 785 randomly selected subjects who completed four years of college, 144 of them are smokers.

Let p = population proportion of smokers among those with four years of college

So, Null Hypothesis, $H_0$ : p $\geq$ 27% {means that the rate of smoking among those with four years of college is more than or equal to the 27% rate for the general population}

Alternate Hypothesis, $H_A$ : p < 27% {means that the rate of smoking among those with four years of college is less than the 27% rate for the general population}

The test statistics that will be used here is One-sample z-test for proportions;

T.S. = $\frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n} } }$ ~ N(0,1)

where, $\hat p$ = sample proportion of smokers = $\frac{144}{785}$ = 0.18

n = sample of subjects = 785

So, the test statistics = $\frac{0.18-0.27}{\sqrt{\frac{0.27(1-0.27)}{785} } }$

= -5.68

The value of z-test statistics is -5.68.

<h2>Also, the P-value of the test statistics is given by;</h2>

P-value = P(Z < -5.68) = Less than 0.0001

Now, at a 0.01 level of significance, the z table gives a critical value of -2.3262 for the left-tailed test.

Since the value of our test statistics is less than the critical value of z, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region.

Therefore, we conclude that the rate of smoking among those with four years of college is less than the 27% rate for the general population.

7 0

3 years ago