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3 years ago

8

a ladder of length 4m leans against the wall of a house. The foot of the ladder is 2m from the wall. Will the ladder reach a win

dow 3.5m high

1 answer:

Stolb23 [73]3 years ago

4 0

I think it would be more because when you multiply 4*2 it'll be 8

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44 points! Brainliest for correct answer!

Art [367]

Answer:

5n + 25q = 200 - - - (1)

n = 5q - - - (2)

q = 40

n = 5(40) = 200

Step-by-step explanation:

Number of Nickels = n

Number of Quarters = q

$2.00 = $2 * 100 = 200 cent

Nickel = 5 cent

Quarter = 25 cent

5n + 25q = 200 - - - (1)

n = 5q - - - (2)

5(5q) + 25q = 200

25q + 25q = 200

50q = 200

q = 200/5

q = 40

n = 5(40) = 200

5 0

3 years ago

Historically, the proportion of people who trade in their old car to a car dealer when purchasing a new car is 48%. Over the pre

artcher [175]

Answer: The proportion of new car buyers that trade in their old car has statistically significantly decreased.

Step-by-step explanation:

Since we have given that

p = 48% = 0.48

n = 115

x = 46

So, $\hat{p}=\dfrac{46}{115}=0.40$

So, hypothesis would be

$H_0:\ p=\hat{p}\\\\H_a:p$

So, test value would be

$z=\dfrac{p-\hat{p}}{\sqrt{\dfrac{p(1-p)}{n}}}\\\z=\dfrac{0.48-0.40}{\sqrt{\dfrac{0.48\times 0.52}{115}}}\\\\z=\dfrac{0.08}{0.0466}\\\\z=1.72$

At 10% level of significance, critical value would be

z= 1.28

Since 1.28 < 1.72

So, we will reject the null hypothesis.

Hence, the proportion of new car buyers that trade in their old car has statistically significantly decreased.

6 0

3 years ago

Assume that an airline’s flights for miami leave every 33 minutes and flights from dallas leave every 45 minutes. If the flights

Kobotan [32]

Answer:

495

Step-by-step explanation:

To find this you have to find the LCM of the two times which in this case is 33 and 45. The LCM of those two is 495.

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3 years ago

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An oil company is considering 2 sites on which to drill, described as follows:

Olegator [25]

A)site A has a larger probablility of finding oil
B) the difference between amount of profitmade is 30 million.

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3 years ago

Which is the graph of f(x) = (x + 3)(x – 2)?

vodka [1.7K]

Looks like this
Everything in one picture

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3 years ago

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