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borishaifa [10]
2 years ago
14

Is 2x+5y+7z a trinomial?

Mathematics
1 answer:
stich3 [128]2 years ago
4 0

Answer:

yes

Step-by-step explanation:

Trinomial means the equation consists of 3 terms therefore 2x+5y+7z is a trinomial.

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The area of a triangle is 18. The base is 6 inches. What is the height?
attashe74 [19]

Answer:

the hight of your triangle is six inches

7 0
2 years ago
The average undergraduate cost for tuition, fees, and room and board for two-year institutions last year was $13,252. The follow
kipiarov [429]

Answer:

The p-value of the test is 0.0041 < 0.05, which means that there is sufficient evidence at the 0.05 significance level to conclude that the mean cost has increased.

Step-by-step explanation:

The average undergraduate cost for tuition, fees, and room and board for two-year institutions last year was $13,252. Test if the mean cost has increased.

At the null hypothesis, we test if the mean cost is still the same, that is:

H_0: \mu = 13252

At the alternative hypothesis, we test if the mean cost has increased, that is:

H_1: \mu > 13252

The test statistic is:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, s is the standard deviation and n is the size of the sample.

13252 is tested at the null hypothesis:

This means that \mu = 13252

The following year, a random sample of 20 two-year institutions had a mean of $15,560 and a standard deviation of $3500.

This means that n = 20, X = 15560, s = 3500

Value of the test statistic:

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

t = \frac{15560 - 13252}{\frac{3500}{\sqrt{20}}}

t = 2.95

P-value of the test and decision:

The p-value of the test is found using a t-score calculator, with a right-tailed test, with 20-1 = 19 degrees of freedom and t = 2.95. Thus, the p-value of the test is 0.0041.

The p-value of the test is 0.0041 < 0.05, which means that there is sufficient evidence at the 0.05 significance level to conclude that the mean cost has increased.

7 0
3 years ago
In quadrilateral abcd below,
Ostrovityanka [42]

Answer: where is the quadrilateral

Step-by-step explanation:

4 0
3 years ago
I cant see the answer what is it
JulsSmile [24]
Whats the question??????????????????????
8 0
3 years ago
Read 2 more answers
a company uses two vans to transport workers from a free parking lot to the workplace between 7 and 9 a.m. One can has 14 more s
Fiesta28 [93]
Y = x + 14     (the larger bus has 14 more seats)
2x + y = 65       ( 2 x two times the seats , as it makes 2 trips the smaller van so the seats will be full twice maximum)

2x + x + 14 = 65   (sub the value of y = x+14 in the second equation)

3x = 51
x = 17 seat (smaller)
y = 31 seat (larger)
3 0
3 years ago
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