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3 years ago

What two numbers multiply to be -56 and add up to be -1?

Mathematics

2 answers:

RoseWind [281]3 years ago

8 0

-8 and 7
7-8= -1 and (-8)x(7)=-56

padilas [110]3 years ago

3 0

Answer:

-8 and 7 is the answer

-8*7 is -56

and -8+7 is -1

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Find the value of y so that the line passes through the two points has the given slope.

satela [25.4K]

Ok you need to do y-(-2) over -3-(-9) and you get(y+2)/(-3+9)=1
so y+2=1*6
y+2=6
y=4

6 0

3 years ago

A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard devia

Butoxors [25]

Answer:

Probability that their mean is above 215 is 0.0287.

Step-by-step explanation:

We are given that a bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50.

For this, 40 different applicants are randomly selected.

<em>Let X = ratings for credit</em>

So, X ~ N( $\mu=200,\sigma^{2}=50^{2}$ )

Now, the z score probability distribution for sample mean is given by;

Z = $\frac{X-\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

where, $\mu$ = population mean = 200

$\sigma$ = standard deviation = 50

$\bar X$ = sample mean

n = sample of applicants = 40

So, probability that their mean is above 215 is given by = P( $\bar X$ > 215)

P( $\bar X$ > 215) = P( $\frac{X-\mu}{\frac{\sigma}{\sqrt{n} } }$ > $\frac{215-200}{\frac{50}{\sqrt{40} } }$ ) = P(Z > 1.897) = 1 - P(Z $\leq$ 1.897)

= 1 - 0.97108 = 0.0287

Therefore, probability that their mean is above 215 is 0.0287.

5 0

3 years ago

Henry counted 350 Lockers in his school Hailey counted 403 Lockers in her school how does the 3in 350 compared to the three in 4

stiv31 [10]

The 3 in 350 represents 300

because 350=300+50+0, that is: 3 one hundreds +5 tens +0 ones

The 3 in 403, represents 3 because 403 = 400+3 that is 4 one hundreds, 0 tens and 3 ones.

Thus the 3 in the number 350 and the 3 in the number 403 are not the same.

The 3 in the number 350 is one hundred time the 3 in the number 403.

Answer: The 3 in the number 350 is one hundred time the 3 in the number 403.

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3 years ago

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