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dlinn [17]
2 years ago
5

Which of the lines have a slope of 2?

Mathematics
1 answer:
ololo11 [35]2 years ago
7 0

Answer:

Im 99% sure it is D but the graphs are hard to see

Step-by-step explanation:

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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Write and solve an equa
MariettaO [177]

Answer:

<u><em>Steven is 15 and one half years old now</em></u>

Step-by-step explanation:

<u />

Linear equations

Sometimes we need to know the value of a variable in a given equation and that variable is given as a polynomial of degree 1. Solving for that variable means isolating it and replacing the other known values

Steven was 7 years old eight and one-half years ago. If we call x as the actual age of Steven, his age eight and one-half years ago was

x-8\frac{1}{2}

We know he was 7 years old then, so

x-8\frac{1}{2}=7

We need to know his actual age, so let's solve for x, adding 8\frac{1}{2} to each side of the equation

x-8\frac{1}{2}+8\frac{1}{2}=7+8\frac{1}{2}

Simplifying

x=15\frac{1}{2}

Steven is 15 and one half years old now

7 0
3 years ago
Hello everyone good morning how is everyone doing to day
Zepler [3.9K]
I’m tired I’ve so much homework to complete and a long day of school :(
5 0
3 years ago
Read 2 more answers
Thirty-three college freshmen were randomly selected for an on-campus survey at their university. The participants' mean GPA was
Ivan

Answer: \pm0.1706

Step-by-step explanation:

Given : Sample size : n= 33

Critical value for significance level of \alpha:0.05 : z_{\alpha/2}= 1.96

Sample mean : \overline{x}=2.5

Standard deviation : \sigma= 0.5

We assume that this is a normal distribution.

Margin of error : E=\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

i.e. E=\pm (1.96)\dfrac{0.5}{\sqrt{33}}=\pm0.170596102837\approx\pm0.1706

Hence, the  margin of error is \pm0.1706

7 0
3 years ago
Expand the polynomial (x2 − y2)2 + (2xy)2, then simplify it by combining like terms.
Vlada [557]
<span><span>2<span>x^2</span></span>+<span><span>4x</span>y</span></span>−<span>2<span>y^<span>2
hope this helps</span></span></span>
8 0
3 years ago
Find the​ P-value for the indicated hypothesis test with the given standardized test​ statistic, z. Decide whether to reject H0
Leviafan [203]

Answer: We do not reject the null hypothesis.

Step-by-step explanation:

  • When the p-value is greater than the significance level , then we do not reject the null hypothesis or if p-value is smaller than the significance level , then we reject the null hypothesis.

Given : Test statistic : z = -2.28

Significance level : \alpha=0.02

By using the standard normal distribution table ,

The p-value corresponds to the given test statistic ( two tailed ):-

2P(Z>|z|)=2P(Z>2.28)=0.0226

Since the p-value is greater than the significance level of 0.02.

Then , we do not reject the null hypothesis.

8 0
3 years ago
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