(a-6b)(a+6b) pls answer

Answers

Answer 1

Answer: $(a-6b)(a+6b)=a^2-36b^2\n\n (a-b)(a+b)=a^2-b^2$

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(3-5i)(2+9i)+(7+2i)(7-2i)
Simplify the expression (3+5)6

A recent survey of 8,000 high school students found that the mean price of a prom dress was $195.00 with a standard deviation of $12.00. Alyssa thinks that her school is more fashion conscious and spent more than $195.00. She collected data from 20 people in her high school and found that the average price spent on a prom dress was $208.00. Which of the following is the correct z-statistic for this situation?

Answers

The z-statistic can be calculated as the difference in the population mean and sample mean divided by the standard error. The standard error can be calculated as the standard deviation divided by square root of sample size. The standard error: SE = 12/ sqrt(20) = 2.68 The z-statistic: (195 -208) 2.68 = -4.86

Answer:

4.84

Step-by-step explanation:

got it right on edge2020

Can anyone answer this PLSSSSSSS I NEED IT!!!

Answers

Answer:

Step-by-step explanation:

Log3/5 25/9=x-2 ? algebra 2

Answers

$log_{ (3)/(5) } (25)/(9) =x-2\n\nlog_{ (3)/(5) } ((3)/(5))^(-2) =x-2\n\n-2=x-2\n\n-x=-2+2\n\n-x=0\n\nx=0$

$log_{(3)/(5)}\left((25)/(9)\right)=x-2\n ((3)/(5))^(x-2)=((3)/(5))^(-2)\n \n x-2=-2\n \n \boxed{x=0}$

At 7 A.M the temperature was 4 .At 9A.M it was a degrees warmer. What was the temperature at 9 A.M

Answers

It was 5 degrees at 9 am

Answer:

5 I’m guessing

Step-by-step explanation:

If it’s a degrees warmer and to the right of a number line is warm in weather then it would be 5.

In the neighborhood park there is a circular grassy picnic area, but half of the grass has died. The city wants to replant the grass, but needs to know the square footage of the damaged area. If the circular picnic area is 150 feet across, what is the square footage of the damaged area? Let π = 3.14.A) 471 sq. feet
B) 8831.25 sq. feet
C) 17662.5 sq. feet
D) 35325 sq. feet

Answers

so, πr^2 is the equation for the area of a circle, if we calculate that, it will equal 17662.5

we then half that to get the area (square feet) of the dead grass, which is
8831.25 square feet which means the answer is B.

150 feet across is diameter
find area
but 1/2 is dead
find area then times 1/2

area=pir^2

150=d
d/2=r=150/2=75=r

area=pi75^2
area=5625pi
times 1/2
area=2812.5pi
pi=3.14 for this problem
area=8831.25

B is answer

Bailey was mixing some instant pudding .The directions said to add 2 cups of milks to the contents of the package.The only measuring cup that she could find was 2/3 cup.How many times should she fill this measuring cup?

Answers

Divide 2/(2/3). Answer is 3.

2/3*10
that is how you get it
hope i was able to help

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