$(a^(2)-1)/(2-5a) times (15a-6)/(a^(2)+5a-6)$ click on answer to see full problem

Answers

Answer 1

Answer: $\bf \cfrac{a^2-1}{2-5a}* \cfrac{15-6}{a^2+5a-6}\n\n-----------------------------\n\nrecall\quad \textit{difference of squares}\n \quad \n(a-b)(a+b) = a^2-b^2\qquad \qquad a^2-b^2 = (a-b)(a+b)\n\nthus\quad a^2-1\iff a^2-1^2\implies (a-1)(a+1)\n\n\nnow\quad a^2+5a-6\implies (a+6)(a-1)\n\n-----------------------------\n\nthus\n\n\n\cfrac{a^2-1}{2-5a}* \cfrac{15-6}{a^2+5a-6}\implies \cfrac{(a-1)(a+1)}{2-5a}* \cfrac{3(5a-2)}{(a+6)(a-1)}\n\n-----------------------------\n\n$

$\bf now\quad 3(5a-2) \iff -3(2-5a)\n\n-----------------------------\n\nthus\n\n\n\cfrac{\underline{(a-1)}(a+1)}{\underline{2-5a}}* \cfrac{-3\underline{(2-5a)}}{(a+6)\underline{(a-1)}}\implies \cfrac{-3(a+1)}{a+6}$

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MATHAnswer and I will give you brainiliest
Answer and I will give you brainiliest

Answers

Answer:

I don't now this but you should do pemdas that really helped me

Step-by-step explanation:

The first step is perthansies then exponents and then multiplication then division and last addition and subtraction that should give you your answer.

Mr. Floyd, the school librarian, is ordering new keyboards and mice for all of the school's computer labs. Each keyboard costs $13.50, and each mouse costs $6.50. There are 3 computer labs in the school, and each computer lab has s computer stations.Pick all the expressions that represent how much Mr. Floyd will spend on new keyboards and mice.

Answers

Answer:

13.50 + 6.50 x ( 3 x s) =

Step-by-step explanation:

I don't know what the options are, however that is how I would write it.

In order to buy the microscope, we plan to walk dogs after school, charging $3 per dog. To reward the dogs, we will buy a box of treats for $5 as we start the business. The price of the microscope is $254. How many dogs do the friends need to walk in order to have enough money to buy the microscope?

Answers

Answer:

85 dogs they need to walk to have a 254

9/8+7/40= and does the answer simplify

Answers

Answer:

1 3/10

Step-by-step explanation:

9/8 +7/40

Get a common denominator of 40

9/8 *5/5 + 7/40

45/40 + 7/40

52/40

Rewriting as

40/40 +12/40

1 + 3/10

1 3/10

Answer:

1 3/10

Step-by-step explanation:

First, you need to get a common denominator:

8x5=40 <-- common denominator

45/40+7/40= 52/40

yes you can simplify it.

your final answer will be: 1 3/10

Your grandmother always has a jar of cookies on her counter. One day while you are visiting you eat 5 cookies from the jar. In the equation below, c is the number of cookies remaining in the jar and b is the number of cookies in the jar before your visit. The relationship between these two variables can be expressed by the following equation: c=b-5

Answers

Answer:

So, As You Could See In The Equation C=B-5. C, Which Is The Number Of Cookies Left In The Jar. Is What They Are Trying To Solve For.

Always Remeber Dependant Variable Is What Were Observing, And Independant Variable Is What Were Changing.

So, In This Case C Is The Dependant Variable, And B Is The Independant Variable.

I Hoped This Helped!

Answer:

C is dependent, B is independent

Step-by-step explanation:

The dependent variable is the number that is affected when you change the independent variable—it depends on the independent variable.

Does the number of cookies remaining in the jar depend on the number of cookies in the jar before your visit, or does the number of cookies in the jar before your visit depend on the number of cookies remaining in the jar.

The number of cookies remaining in the jar depends on the number of cookies in the jar before your visit. Therefore, the number of cookies remaining in the jar is the dependent variable, and the number of cookies in the jar before your visit is the independent variable.

Therefore, C is the dependant variable, and B is the independant variable.

Hope this helps! <3

Compute the permutation. 30 P 3
Answer options: 9,000 27,000 24,360