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Grace [21]
3 years ago
6

The winner of a 1000 mile race drove his car to victory at rate of 124.51222mph. What was his time(to the nearest thousand of an

hr)?
Mathematics
1 answer:
NikAS [45]3 years ago
6 0

distance = rate times time, so time = distance / rate.

Here,

time = (1000 miles) / (124.51222 mph) = 0.125 hour = (1/8 hour)

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The fracture strength of tempered glass averages 14.1 (measured in thousands of pounds per square inch) and has standard deviati
ololo11 [35]

Answer:

0.15866 is the probability of the average fracture strength of selected 100 pieces of glasses that of exceed 14.3.

Step-by-step explanation:

Given that, the strength of a tempered(x) a glass has average 14.1 and has standard deviation 2.

\mu_x=14.1 , \sigma_x=2

n=number of selected pieces= 100.

The probability that the average fracture strength of 100 pieces of this glass exceed 14.3 is

P(\overline X>14.3)=P(\frac{\overline X-\mu_x}{2/\sqrt n}>\frac{14.3-14.1}{2/\sqrt{100}})

                    =P(\overline X>1)

                    =1-P(\overline X\leq 1)

                    = 1 - 0.84134

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3 0
2 years ago
Divide 3983 /4 give quotient and remainder
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Answer:

quotient = 995

remainder = 3

Step-by-step explanation:

4 0
2 years ago
Emily works at a local restaurant. She made $200 in tips last night. She shared 15 percent of her tips with the crew that cleans
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30 dollars. She gave the clean up crew 30 dollars
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2 years ago
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Tonya is making a scale model of a monument that is 160 feet tall. If she uses a scale of 4 in. = 5 ft., how tall should she mak
olasank [31]

Answer:

<u>It should be 128 inches or 10.67 feet tall</u>

Step-by-step explanation:

Real size of the monument = 160 feet tall

Scale used by Tonya = 4 inches equal to 5 feet

Scale model of the monument = Real size of the monument / Scale used

Proportion between real monument and scale model = 160 / 5 = 32

It means that the proportion between the real monument and the scale model is 32

Scale model height = Proportion * scale used

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<u>Scale model height = 128 inches</u>

<u>Scale model height = 128/12 = 10.67 feet (12 inches = 1 feet)</u>

4 0
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Kathy used 15 ounces of chocolate in her cookies. Cindy used 15% more chocolate in her cookies. How many ounces did Cindy use? (
MaRussiya [10]
Cindy used 17.25 because 15 × .5 = 2.25 and if you add it to 15 ypu get 17.25
5 0
3 years ago
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