3 years ago

Explain how estimating helps you check the reasonableness of your answers.

Mathematics

1 answer:

ikadub [295]3 years ago

6 0

Ur answer will be more accurate

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A park has a length to width ratio of 7:4 and the perimeter of the park is 880 meters. What are the length and width of the park

Schach [20]

Step-by-step explanation:

Ratio of length to width = 7 : 4

length = 7x

width = 4x

7x + 4x = 11x

length = 880

$880 + 4x = 11x$

$880 = 11x - 4x$

$880 = 7x$

$\frac{880}{7} = x$

$125.71 = x$

width = 4x

= 4(125.71)

= 502.85

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2 years ago

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denis-greek [22]

Let $X$ be the random variable denoting the number of girls that are born. Then $X$ has a binomial distribution on $n=125$ babies and probability of getting a girl $p=0.5$ . The probability we want is

$\mathbb P(X\ge60)=\displaystyle\sum_{x=60}^{125}\binom{125}x0.5^{125-x}0.5^x\approx0.704=70.4\%$

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3 years ago

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Select the measures that are equal. Select all that apply.

BartSMP [9]

D and F and C are all equal D.360 F. 10yards = 360inches C. 30 feet = 350inches.

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3 years ago

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the distance from jeffreys bay knysna is 198km .A driver is 11:at knysna. calculate the drivrs average speed

zavuch27 [327]

Answer:

18km/[unit of time]

Step-by-step explanation:

v (speed) = d/t

v = 198/11

v = 18

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2 years ago

A boy found a bicycle lock for which the combination was unknown. the correct combination is a four-digit number,

saul85 [17]

This doesn't give me enough information to answer the question lol

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3 years ago