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3 years ago

Please help i’ll give highest

Mathematics

1 answer:

svlad2 [7]3 years ago

8 0

The answer is:
D) y=-2x-7

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A librarian arranged some books on the shelf using the Dewey decimal system. Choose the group of book numbers that is listed in

lara [203]

The answer is C), 834, 834.19, 834.2, 834.29

I know this is late, but I hope it was helpful!

8 0

3 years ago

in a triangle two sides of the same length the ratio of each of these sides to the third side is 5:3 if the perimeter of the tri

AveGali [126]

Answer:

Step-by-step explanation:

Perimeter of a triangle equals side 1 plus side 2 plus side 2

P = s1 + s2 + s3 side 1 = side 2 = x

x/side 3 = 5 / 3

x = (5/3) side 3

x (3/5) = side 3

perimeter = 65 slove for x

65 = x + x + 3x/5

325 = 5x + 5x + 3x

325 = 13X

25 = x equal side 1 and side 2

side 3 = 25(3/5) = 15

3 0

3 years ago

An automobile manufacturer has given its van a 47.2 miles/gallon (MPG) rating. An independent testing firm has been contracted t

7nadin3 [17]

Answer:

The test statistics is $t = -1.7$

The Null and Alternative hypothesis are

$H_o : \mu = 47.2$ and $H_a : \mu \ne 47.2$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 47.2 miles/gallon(MPG)$

The sample size is $n = 250 \ van$

The sample mean is $\= x = 47.0$

The sample standard deviation is $\sigma = 1.9$

The level of significance is $\alpha = 0.02$

Given that the value which the manufacturer gave the automobile is 47.2 and it is believed that this is not correct, then

The Null Hypothesis is

$H_o : \mu = 47.2$

The alternative Hypothesis is

$H_a : \mu \ne 47.2$

The test statistics can be mathematically evaluated as

$t = \frac{\= x- \mu}{\frac{\sigma }{\sqrt{n} } }$

substituting values

$t = \frac{\= 47- 47.2}{\frac{1.9 }{\sqrt{250} } }$

$t = -1.7$

7 0

3 years ago

I need help with this please

natka813 [3]

Answer:

Step-by-step explanation:

Antelope, Montana:

21, 30, 42, 58, 70, 79

Range- 58 79-21= 58

Quartile 1- 30

Quartile 3- 70

Interquartile Range- 40 70-30= 40

Augusta, Maine:

28, 32, 41, 53, 66, 75

Range- 47

Quartile 1- 32

Quartile 3- 66

Interquartile Range- 34

3 0

3 years ago

HELP PLEASE! Chords NO and PQ are congruent. Arc NO measures 4x + 10 and Arc PQ measures 2x + 20. What is each of their measures

Elodia [21]

4x + 10 = 2x + 20
4x - 2x = 20 - 10
2x = 10
x = 5

7 0

2 years ago