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sineoko [7]
2 years ago
7

It takes Caroline 1/5 of an hour to walk a mile. Four of Caroline's friends time themselves on their own walks of different leng

ths.
*David: walked 1/2 of a mile in 2/5 of an hour

*Jeanette: walked 1/2 of a mile in 1/10 of an hour

*Kay: walked 1/5 of a mile in 12 of an hour

*Mark: walked 1/3 of a mile in 3/5 of an hour

Which friend is walking at the same rate as Caroline?

A.David

B.Jeanette

C.Kay

D.Mark
Mathematics
1 answer:
Alexus [3.1K]2 years ago
4 0

Answer:

Jeanette

Step-by-step explanation:

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Lines that never intersect are perpendicular True or False
Arada [10]
Hey there!

The answer is false. <span>Two </span>lines<span> that </span>intersect<span> and form right angles are called </span>perpendicular lines<span>.
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5 0
2 years ago
Heidi solved the equation 3(x + 4) + 2 = 2 + 5(x – 4). Her steps are below: 3x + 12 + 2 = 2 + 5x – 20 3x + 14 = 5x – 18 14 = 2x
lyudmila [28]

Answer:

See explanation

Step-by-step explanation:

3(x + 4) + 2 = 2 + 5(x – 4)

Step 1: distributive property

3(x + 4) + 2 = 2 + 5(x – 4)

3x + 12 + 2 = 2 + 5x - 20

Step 2: collect like terms

3x + 12 + 2 = 2 + 5x - 20

3x + 14 = 5x - 18

Step 3: Addition property of equality

3x + 14 = 5x - 18

3x + 14 + 18 = 5x - 18 + 18

3x + 32 = 5x

Step 4: subtraction property of equality

3x + 32 - 3x = 5x - 3x

32 = 2x

Step 5: division property of equality

32 = 2x

32/2 = 2x/2

16 = x

x = 16

6 0
2 years ago
Steve and Conner together have $60. Steve has $9 more than twice Conner’s amount. How much money does each have?
Lapatulllka [165]

Answer:

Step-by-step explanation:

let a=Ann's amt., b=Betty's amt.

a=2b+9

b+2b+9=60

3b+9-9=60-9

3b=51

b=$17

a=34+9=$43

6 0
2 years ago
Need HELP!!! For all, I’m truly confused
irina1246 [14]

Step-by-step explanation:

You need to know some geometry rules.

For example:

Angle sum of a triangle is equal to 180 degrees.

Straight line is equal to 180 degrees.

Other rules I have attached.

If you have any confusion over these I will be happy to answer your questions.

6 0
2 years ago
A new centrifugal pump is being considered for an application involving the pumping of ammonia. The specification is that the fl
ollegr [7]

Answer:

from the t-distribution table, at df = 7 and t = 2.23

Lies p-values [ 0.05 and 0.025 ]

Hence;

0.025 < p-value < 0.05

Step-by-step explanation:

Given that;

x^{bar} = 6.5 gpm

μ = 5 gpm

n = eight runs = 8

standard deviation σ = 1.9 gpm

Test statistics;

t = (x^{bar} - μ) / \frac{s}{\sqrt{n} }

we substitute

t = (6.5 - 5) / \frac{1.9}{\sqrt{8} }

t = 1.5 / 0.67175

t = 2.23

the degree of freedom df = n-1 = 8 - 1

df = 7

Now, from the t-distribution table, at df = 7 and t = 2.23

Lies p-values [ 0.05 and 0.025 ]

Hence;

0.025 < p-value < 0.05

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2 years ago
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