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2 years ago

Find the value of x for which the lines a and b are parallel. answer : 23 20 2 19

Mathematics

1 answer:

Afina-wow [57]2 years ago

4 0

Answer:

x=19

Step-by-step explanation:

These two angles are alternate interior angles and alternate interior angles are equal when the lines are parallel

148 = 7x+15

Subtract 15 from each side

148-15 =7x+15-15

133 = 7x

Divide by 7

133/7 = 7x/7

19 =x

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Answer:

44.55

Step-by-step explanation:

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2 years ago

I need help for my daughters homework for write the sentence as an inequality

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Answer:

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Step-by-step explanation:

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2 years ago

What number is equivilent to 3 4/ 3 2

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Answer:

Step-by-step explanation:

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2 years ago

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What is 4n + 3 ( n – 5 ) + 2 simplified? I suck At math sry

Tema [17]

Answer:

$7n−13$

Step-by-step explanation:

$4n+3(n−5)+2$

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2 years ago

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Amélie runs a bakery. She wants to find out whether her cake sales are affected by the weather conditions. She recorded the dail

SVETLANKA909090 [29]

Answer:

Step-by-step explanation:

Daily temp(in F) Cakes sold

42 39

45 52

48 31

54 61

59 72

62 35

64 61

65 34

67 58

75 45

84 24

To find whether there is an association between these two let us find the correlation coefficient between these two variables.

r=-0.1975

Since |r|<0.5, correlation is weak.

Let us test the hypothesis r =0

H0:r=0

Ha:r not equals 0

Test statistic = $\frac{r\sqrt{n-2} }{\sqrt{1-r^2} } \\=\frac{-0.1975\sqrt{11-2} }{\sqrt{1-0.1975^2} }\\=\frac{-0.5625}{{0.9803} } \\=-0.5738$

p =0.298

Since p value >0.10, at 90% significance level we accept that there is no association.

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2 years ago