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3 years ago

Can you explain how to do 7-11 or do them please

Mathematics

1 answer:

lawyer [7]3 years ago

6 0

Answer:

Step-by-step explanation:

A good thing to remember here is that the word "is" generally means "equals" and the word "of" generally means to multiply. For #7, "15 is" translates to

15 =

"3/8 of" translates to

15 = 3/8 ×

"of what number" is our unknown, so

15 = 3/8x. Solve it by multiplying both sides by 8/3.

#8. "Seventy is" is 70 =

"what decimal part" is our unknown x,

"of 200" is ×200, so

70 = 200x. Solve that by dividing both sides by 200. Leave it in a decimal since it asks for the decimal part.

#9. "Two-fifths of" is 2/5 ×

"what number" is our unknown x, and

"is 120" is = 120, so

2/5x = 120. Solve that by multiplying both sides by 5/2.

#10. Read "what is 60% of 180" to get x = .60(180)

#11. Read "what is 20% of 35" to get x = .20(35)

Multiply both 10 and 11 to get the answers.

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Paul [167]

We know that $P(D\cap E)=P(D)P(E)=\boxed{0.1134}$ .

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Hope this helps.

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3 years ago

Hamid's soccer game will start at 11:00 A.M., but the players must arrive at the field three-quarters of an hour early to warm u

Minchanka [31]

If the game will start at 11:00 A.M., but the players must arrive at the field three-quarters of an hour early to warm up, it refers to 8:45 a.m. Why? If we start to count in 11 backward and start to trace the three-quarters, it shows that 10:45, 9:45, and 8:45 are the three-quarters. So Hamid statement that he has to be at the field at 9:45 A.M is not correct.

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3 years ago

The women athletes in the BIG10 Schools have a long-term graduation rate of 73%. Over the past several years, a random sample of

ivolga24 [154]

Answer:

This means that population proportion of women athletes who graduate from the BIG10 is now not more than 73%

Step-by-step explanation:

Here,

The null hypothesis is p = 0.73

Alternate hypothesis is p> 0.73

The level of significance = 0.10 or 10%

Sample size = 23

Sample proportion = 19/23 = 0.826

Z test statistics

= (p’-p)/Sqrt ((p(1-p)/n))

Substituting the given values, we get –

Z = (0.826-0.73)/Sqrt ((0.73(1-0.73)/23)) = 1.037

Thus, the P values for Z>1.037

= 1- P(Z less than or equal to 1.037)

= 1- 0.8501

= 0.150

P-value is greater than the level of significance

We will accept the null hypothesis

This means that population proportion of women athletes who graduate from the BIG10 is now not more than 73%

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3 years ago

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xeze [42]

Answer:

250

Step-by-step explanation:

when x = 1, y = 250. That's the y-intercept

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Nata [24]

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