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Keith_Richards [23]
2 years ago
3

Which ratio is larger 10 : 21 or 21 : 93? (plz provide method)

Mathematics
2 answers:
nirvana33 [79]2 years ago
7 0
So I would change the form of the two ratios. They can also be represented as fractions.

10:21 ⇒ 10/21 = 0.48

21:93 ⇒ 21/93 = 0.23

Therefore, (since 0.48 > 0.23) the ratio 10:21 is greater
S_A_V [24]2 years ago
4 0
Ratios are fractions. So, we can divide the top by the bottom to get a decimal form and compare.

10:21 = \frac{10}{21} ≈ <span>0.47
21:93 = </span>\frac{21}{93} ≈ 0.22

0.47 is bigger than 0.22.

So, 10:21 is bigger than 21:93.
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A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean
Nana76 [90]

Answer: 0.0026

Step-by-step explanation:

Given: Mean : \mu=8.4\text{ hours}

Standard Deviation : \sigma = 1.8\text{ hours}

Sample size : n=40

Formula to calculate z-score :-

z=\dfrac{X-\mu}{\dfrac{\sigma}{\sqrt{n}}}

For X=7.6 hours.

z=\dfrac{7.6-8.4}{\dfrac{1.8}{\sqrt{40}}}=-2.81091347571\approx-2.8

P(X

Hence, the probability that their mean rebuild time is less than 7.6 hours = 0.0026

8 0
2 years ago
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A children's pony ride at a zoo has ponies attached to a carousel pole in the center of a circle that the ponies walk around as
stepladder [879]
We simply need to solve for the circumference of the imaginary circle.

Given:
Diameter = 25 feet.

Circumference = 2 * radius * π             OR     Circumference = diameter * π

C = 25feet * 3.14
C = 78.50 feet

The pony will walk 78.50 feet to complete one trip around the circle. 


3 0
2 years ago
Compare 5.7145... And the square root of 29
svlad2 [7]

To get the square root of 29, we can simply use a calculator.

So the square root of 29 using the calculator is:

sqrt (29) = 5.3852

 

<span> So we can say that 5.7145 is greater than the square root of 29.</span>

<span>The difference is 5.7145 – 5.3852 = 0.3293</span>

4 0
2 years ago
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Find the value of x in each case:
Zanzabum

Answer:

x=30\°

Step-by-step explanation:

<u>Find the measures of interior angles in each triangle</u>

Triangle BGC

m

The measures of triangle BGC are 90\°-60\°-30\°

Triangle CGH

we know that

m -----> by consecutive interior angles

we have that

m

so

m

m

substitute

m

we have

m

m

m

remember that

m

60\°+2x+180\°-4x=180\°

60\°=2x

x=30\°

The measures of triangle CGH are 60\°-60\°-60\°

Triangle GHE

m< EGH=90\°-2x=90-2(30\°)=30\°

m< GHE=4x=4(30\°)=120\°

remember that

m

substitute and solve for m<GEH

30\°+120\°+m

150\°+m

m

The measures of triangle GHE are 30\°-120\°-30\°

6 0
2 years ago
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Bob neff, owner of an automotive dealership, pays one of his salesmen, mike, a $1,300 draw per week plus 6% on all commission sa
Sedaia [141]

Draw per week = $1,300

Draw for four weeks = 1300 x 4 = $5,200

Four week sales amount = $186,900

6% commission on sales = 0.06 x 186,900 = $11,214

<span>Thus the amount equal to mike’s commission minus the draw = 11,214 – 5,200 = $6,014</span>

4 0
2 years ago
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