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3 years ago

What is the solution to the following system:

Mathematics

2 answers:

lara [203]3 years ago

5 0

Answer:

(3,-1)

Step-by-step explanation:

Here we are given a pair of linear equation and we are asked to find its solution.

We can find the solution graphically as we are given the graph of two lines. The solution of two lines graphically is the point of intersection. Here we see that two lines are meeting at ((3,-1) . Hence the solution to them is (3,-1)

Ymorist [56]3 years ago

4 0

I think the answer would just be at the point of intersection, or (3,-1)

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Marianna [84]

C is the awnser I believe correct me if I’m wrong

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3 years ago

The SAT scores have an average of 1200 with a standard deviation of 60. A sample of 36 scores is selected. a) What is the probab

LiRa [457]

Answer:

a) 0.0082

b) 0.9987

c) 0.9192

d) 0.5000

e) 1

Step-by-step explanation:

The question is concerned with the mean of a sample.

From the central limit theorem we have the formula:

$z=\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }$

a) $z=\frac{1224-1200}{\frac{60}{\sqrt{36} } }=2.40$

The area to the left of z=2.40 is 0.9918

The area to the right of z=2.40 is 1-0.9918=0.0082

$\therefore P(\bar X\:>\:1224)=0.0082$

b) $z=\frac{1230-1200}{\frac{60}{\sqrt{36} } }=3.00$

The area to the left of z=3.00 is 0.9987

$\therefore P(\bar X\:$

c) The z-value of 1200 is 0

The area to the left of 0 is 0.5

$z=\frac{1214-1200}{\frac{60}{\sqrt{36} } }=1.40$

The area to the left of z=1.40 is 0.9192

The probability that the sample mean is between 1200 and 1214 is

$P(1200\:$

d) From c) the probability that the sample mean will be greater than 1200 is 1-0.5000=0.5000

e) $z=\frac{73.46-1200}{\frac{60}{\sqrt{36} } }=-112.65$

The area to the left of z=-112.65 is 0.

The area to the right of z=-112.65 is 1-0=1

5 0

3 years ago

How many numbers lie between the square of 56 and 57

NARA [144]

Answer:

Given, two numbers 56 and 57 we need to find out the numbers lie between the squares of the given numbers.

Now, we have numbers lying between the square of n and (n + 1) is 2n

⇒ Numbers between squares of 56 and (56 + 1) = 2 × 56 = 112

Hence, 112 numbers lies between the square of the given numbers.

7 0

3 years ago

Read 2 more answers

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Natasha_Volkova [10]

Ill give u one its B because 6x where x is the price and 2 is the price for the kids meal and it needs to stay less than $32

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3 years ago

If Stacy brought 150 apples and gave 6 to each of her 4 friends, how much will she have left?

o-na [289]

The answer is 126 because you multiply 6 times 4 which equals 24 and subtract that from 150 so 150-24 = 126

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3 years ago