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nexus9112 [7]
3 years ago
9

Use this image to classify each pair of lines.

Mathematics
2 answers:
maks197457 [2]3 years ago
5 0

First Answer and Last Answer are correct.

The two middle should be reconsidered, you can't really tell if they are technically Perpendicular.

So the correct answer should be "Can't be determined" for the middle two.

VladimirAG [237]3 years ago
3 0

1. Lines AB and CD are both perpendicular to the line EF, then AB || CD (parallel).

2. The relation between lines CD and GH cannot be defined, because the diagram doesn't contain any information about angles at which these lines intersect (or any data about parallelity GH to EF or IJ).

3. The relation between lines AB and GH cannot be defined, because the diagram doesn't contain any information about angles at which these lines intersect (or any data about parallelity GH to EF or IJ).

4. Lines IJ and CD are perpendicular (IJ⊥CD) because they intersect each other at right angle.

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Which constant term should be used to complete the square? <br> x^2-5x+__=7
lora16 [44]
The constant term should be (-5/2)^2 or (5/2)^2 or 25/4. This constant term comes from taking the coefficient on the x^1 term, halving it, and then squaring it.
7 0
3 years ago
Luke can paint 91 portraits in 7 weeks. What is<br>has average rate of painting portraits per week?​
lina2011 [118]

Answer:

13.

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8 0
3 years ago
Compute the most rational way.
liraira [26]
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3 0
2 years ago
What is the answer to this problem that I am having trouble with?
Gnesinka [82]

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

Read the values from the graph in the usual way: find the x-coordinate, then locate the point on the graph and find its y-coordinate.

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4 0
3 years ago
Many freeways have service (or logo) signs that give information on attractions, camping, lodging, food, and gas services prior
Ne4ueva [31]

Answer:

H0 : μd = 0

H1 : μd ≠ 0

Test statistic = 0.6687 ;

Pvalue = 0.7482 ;

Fail to reject H0.

Step-by-step explanation:

H0 : μd = 0

H1 : μd ≠ 0

Given the data:

Before: 15 26 66 115 62 64

After: 16 24 42 80 78 73

Difference = -1 2 24 35 -18 -9

Mean difference, d ; Σd / n

d = Σx / n = ((-1) + 2 + 24 + 35 + (-18) + (-9))

d = Σx / n = 33 / 6 = 5.5

Test statistic = (d / std / sqrt(n))

std = sample standard deviation = 20.146

Test statistic = 5.5 ÷ (20.146/sqrt(6))

Test statistic = 0.6687

The Pvalue :

P(Z < 0.6687) = 0.7482

At α = 0.05

Pvalue > α ; Hence we fail to reject H0

The data does not suggest a significant mean difference in the average number of accidents after information was added to road signs.

5 0
3 years ago
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