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tekilochka [14]
3 years ago
10

(-15)(-4) help meeee

Mathematics
2 answers:
Novosadov [1.4K]3 years ago
8 0

Answer:

+60

Step-by-step explanation:

This is the answer because you multiply -15 x -4 =60

because negative and negative make positive and =60

Hope this helps:)

pls mark brainly

Hunter-Best [27]3 years ago
3 0

The answer is 60 (wow this was a fast answer wish people answered my questions this fast)

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Using traditional methods, it takes 95 hours to receive a basic flying license. A new license training method using Computer Aid
Snowcat [4.5K]

Answer:

There is not sufficient evidence to support the claim that the technique performs differently than the traditional method.

Step-by-step explanation:

The null hypothesis is:

H_{0} = 95

The alternate hypotesis is:

H_{1} \neq 95

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

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

A researcher used the technique with 260 students and observed that they had a mean of 94 hours. Assume the standard deviation is known to be 6.

This means, respectively, that n = 260, X = 94, \sigma = 6

The test-statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{94 - 95}{\frac{6}{\sqrt{260}}}

z = -2.69

The pvalue is:

2(P(Z < -2.69))

P(Z < -2.69) is the pvalue of Z when X = -2.69, which looking at the z-table, is 0.0036

2*(0.0036) = 0.0072

0.0072 < 0.01, which means that the null hypothesis is accepted, that is, there is not sufficient evidence to support the claim that the technique performs differently than the traditional method.

7 0
3 years ago
Help me please im confushed
ANEK [815]
The last one I believe because adjacent means beside eachother
4 0
2 years ago
How do I do this? I don't understand how to do this?
Scorpion4ik [409]
These are the angle measurements, hope this helps you and let me know if im wrong

3 0
3 years ago
TIMED! Which expression is equivalent to is m∠4?
ratelena [41]

Answer:

The correct answer is first option m<2 + m<3

Step-by-step explanation:

From the figure we can see a triangle with angles, <1, <2 and <3

By angle sum property we can write,

m<1 + m< 2 + m<3 = 180°

m<1 = 180 - (m<2 + m<3)   ----(1)

Also we  know that, <1 and <4 are linear pairs

m<1 + m<4 = 180°

m<1 = 180 - m<4   ---(2)

Compare (1) and (2) we get

m<4 = m<2 + m<3

6 0
3 years ago
Solve for x. 5/6x=15
Rudiy27
The answer is x = 18
5 0
3 years ago
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