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guapka [62]
2 years ago
11

Add the two expressions. −2.4n−3 and −7.8n+2

Mathematics
2 answers:
BabaBlast [244]2 years ago
8 0
-10.2n-1 is the answer. You add like terms to get this. So, -2.4n+(-7.8n)=10.2n and -3+2=-1
meriva2 years ago
4 0
<span>−2.4n−3  −7.8n+2
= -10.2 n - 1</span>
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Answer:

Since the calculated value of z= -1.496 does not fall in the critical region z < -1.645 we conclude that the new program is effective. We fail to reject the null hypothesis .

Step-by-step explanation:

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and q2= 0.74

The sample size = n= 27

The population proportion = p1= 0.4

q1= 0.6

We formulate the null and alternate hypotheses that the new program is effective

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The test statistic is

z= p2- p1/√ p1q1/n

z= 0.259-0.4/ √0.4*0.6/27

z=  -0.141/0.09428

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The significance level ∝ is 0.05

The critical region for one tailed test is z ≤ ± 1.645

Since the calculated value of z= -1.496 does not fall in the critical region z < -1.645 we conclude that the new program is effective. We fail to reject the null hypothesis .

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3 years ago
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Naya [18.7K]

Answer:

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Step-by-step explanation:

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To find the y intercept , we have to plug 0 for x and solve for y. That is

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3 years ago
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Step-by-step explanation:

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Since they both earn together $192.9 millions.

So according to the our assumptions we have,

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Therefore, the amount generated by person A=107.6 millions

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Answer:

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