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3 years ago

What is the slope of the line that passes through the points (8, 6) and (10,5)?

Mathematics

1 answer:

kykrilka [37]3 years ago

3 0

Answer:

m= -1/2

Step-by-step explanation:

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In a random sample of 40 refrigerators, the mean repair cost was $150. Assume the population standard deviation is $15.50. Const

Mama L [17]

Answer: ($143.69, $156.31)

Step-by-step explanation:

Confidence interval to estimate population mean :

$\overline{x}\ \pm z\dfrac{\sigma}{\sqrt{n}}$

, where $\sigma$ = population standard deviation

n= sample size

$\overline{x}=$ Sample mean

z= critical value.

As per given,

n= 40

$\sigma$ = $15.50

$\overline{x}=$ $150

Critical value for 99% confidence level = 2.576

Then, 99% confidence interval for the population mean:

$150\pm(2.576)\dfrac{15.50}{\sqrt{40}}\\\\\Rightarrow\ 150\pm6.31 \ \ (approx)\\\\\Rightarrow(150-6.31,150+6.31)=(143.69,156.31)$

Hence, the required confidence interval : ($143.69, $156.31)

6 0

4 years ago

Ten slips of paper numberd 1 through 10 are placed in a bag. You draw a slip at random and draw another without replacing the fi

Bogdan [553]

Answer:

Probability that both numbers are odd =2/9

Step-by-step explanation:

Odd numbers are numbers such that, when they divide 2, there is a remainder.

Ten slips of paper numbered 1 through 10 are placed in a bag.

In number one to ten, the odd numbers are 1, 3,5,7 and 9

They all divide 2 and leaves a remainder.

Total number of odd numbers is 5

Total number of both odd and even numbers from one through 10 is 10

Probability of picking an odd number

= number of odd numbers/ total numbers.

Probability of picking an odd number

= 5/10= 1/2

Probability of picking another odd number without replacement is 4/9

Probability that both numbers are odd = 1/2 × 4/9 =2/9

4 0

4 years ago

I need help on question #20 please!!!! Also show work!!! And tell me why the answer to the problem is correct. THANK YOU!!!

notsponge [240]

1188 = πr²h

For the formula to solve for h, you have to change the equation to:

h = 1188/πr²

which is just moving h to the left side of the equation, and moving v(in this case 1188) to the right side.

because h was multiplied to the original equation, switching sides in an equation makes its replacement(1188) into a devision. (if you move a number across the = sign, the number will become the opposite of itself.)

Since you don't know the radius, you can't simplify this equation.

The answer is h = 1188/πr²

3 0

3 years ago

Simplify the expression (1/4ab)^-2. Assume .

Greeley [361]

The Answer is (4ab)^2 or 16a^2b^2

3 0

4 years ago

Read 2 more answers

PLEASE HELP ME ID DONT UNDERSTAND

Anuta_ua [19.1K]

Answer:

1. m= 3/4

b= -7

2. 6x-4y = 20

-4y = -6x+20

y = 3/2x-5

m=3/2

b= -5

3 0

3 years ago