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zloy xaker [14]
3 years ago
10

Select the correct answer.

Mathematics
2 answers:
dem82 [27]3 years ago
7 0

Answer:

900= x2 - 11x

Step-by-step explanation:

Alina [70]3 years ago
4 0

900 = x2 − 11x

Step-by-step explanation:

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Is 4x+2y=9 a linear equation
ExtremeBDS [4]
Yes it is a linear equation
3 0
3 years ago
The answer to this question asap please
Mkey [24]

At 13% significance level, there isn't enough evidence to prove the administrators to claim that the mean score for the​ state's eighth graders on this exam is more than 280.

<h3>How to state hypothesis conclusion?</h3>

We are given;

Sample size; n = 78

population standard deviation σ = 37

Sample Mean; x' = 280

Population mean; μ = 287

The school administrator declares that mean score is more (bigger than) 280. Thus, the hypotheses is stated as;

Null hypothesis; H₀: μ > 280

Alternative hypothesis; Hₐ: μ < 280

This is a one tail test with significance level of α  = 0.13

From online tables, the critical value at α  = 0.13 is z(c) = -1.13

b) Formula for the test statistic is;

z = (x-  μ)/(σ/√n)

z = ((280 - 287) *√78 )/37

z = -1.67

c) From online p-value from z-score calculator, we have;

P[ z > 280 ] =  0.048

d) The value for z = -1.67  is smaller than the critical value mentioned in problem statement z(c) = - 1.13  , the z(s) is in the rejection zone. Therefore we reject H₀

e) We conclude that at 13% significance level, there isn't enough evidence to prove the administrators to claim that the mean score for the​ state's eighth graders on this exam is more than 280.

Read more about Hypothesis Conclusion at; brainly.com/question/15980493

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5 0
1 year ago
Line AB contains points A ( -3,5) and B (-3,3). Line AB has a slope that is
Alex_Xolod [135]

Answer:

slope  that is undefined

Step-by-step explanation:

Calculate the slope m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = A(- 3, 5) and (x₂, y₂ ) = B(- 3, 3)

m = \frac{3-5}{-3+3} = \frac{-2}{0}

Division by zero is undefined

Thus the slope of AB is undefined

7 0
3 years ago
Read 2 more answers
Solve y = x + 8 for x.<br> x = y + 8<br> x = y - 8<br> X = -y + 8<br> X = -V +8
JulijaS [17]

Answer:

y = x + 8

Step-by-step explanation:

7 0
3 years ago
Problem in attachment... Algebra 2
LuckyWell [14K]
\frac{(2a+1)(a+5)}{(a+1)^2(a+3)} hope this helps&#10;
7 0
3 years ago
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