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3 years ago

X^2+y^2≤ 4y, x^2+y^2≤4x

Mathematics

1 answer:

lisabon 2012 [21]3 years ago

7 0

Answer:

0 what is the question man what

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Use the normal distribution of SAT critical reading scores for which the mean is 502 and the standard deviation is 116. Assume t

PSYCHO15rus [73]

Answer:

(a) 93.19%

(b) 267.3

Step-by-step explanation:

The population mean and standard deviation are given as 502 and 116 respectively.

Consider, <em>X</em> be the random variable that shows the SAT critical reading score is normally distributed.

(a) The percent of the SAT verbal scores are less than 675 can be calculated as:

$P(X$

Thus, the required percentage is 93.19%

(b)

The number of SAT verbal scores that are expected to be greater than 575 can be calculated as:

$P(X>575)=P(\frac{x-502}{116}>\frac{575-502}{116}\\P(X>575)=P(Z>\frac{575-502}{116})\\P(X>575)=P(Z>0.6293)\\P(X>575)=0.2673$

So,

Out of 1000 randomly selected SAT verbal scores, 1000(0.2673) = 267.3 are expected to have greater than 575.

8 0

3 years ago

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N76 [4]

1
A coefficient is the number attached to a variable (k). In front of k is an implied 1 because k*1=k. So the coefficient of the third terms is 1

8 0

3 years ago

Leah's softball team has $437 to spend on equipment. They want to buy 5 gloves that cost $84 each. Leah needs to know if they ha

WITCHER [35]

Answer:

yes she will have enough, they will have 17 dollars left

Step-by-step explanation:

84 times 5 is 420 so she will have enough

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3 years ago

Please help you kind people

mafiozo [28]

Answer:

All I know is that the first picture is 8

Step-by-step explanation:

I know because one times eight is eight so um yeah

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3 years ago

What is 8x-7(x+3)+5x

OLga [1]

Answer:

I'm not 100% sure love, but I think it would be 12x.

Step-by-step explanation:

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3 years ago

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