MATHEMATICS HIGH SCHOOL

Which of the following is the value of the expression (5a + 3)/(a ^ 2 - 1) when a = - 3 ?

Answers

Answer 1
Answer:

Answer:

-3/2

Step-by-step explanation:

(5a + 3) / (a^2 - 1) when a = -3, substitute all values of "a" for -3:

(5(-3) + 3) / ((-3)^2 - 1)

(-15 + 3) / (9 - 1)

(-12) / (8)

Simplify:

- 3/2

Related Questions

Lesson 6: geometry A unit 3: reasoning and proof
What is the most likely explanation for Sarah maintaining a log of each time she spends or receives money?A. making a note each time she receives money so that she does not forget where it came from B. making a note of each expense so that she does not repeat purchases C. preparing a report for her bank on how she spends money D. preparing a budget to review her expenses
Given the graphs of f(x) = X - 8 and g(x) = -4x + 2, find the solution to this system of equations: Y - X = -8 and 4x + y = 2 A) (0, 2) B) (0.-8) C) (2, -6) D)​
Three workers sort 66 boxes in a day. One of the workers is three times more productive than the second worker and twice as productive as the third worker. How many boxes did the second most productive worker sort?
Which ordered pair is a solution to the system of equations? Use the graph.x+2y=4 (line a) -3x+2y=-4 (line b) A. (2,-1) B. (-2,1) C. (2,1) D. (-2, -1)

Anybody know the answer??

Answers

The first one. 1 machine= x 5 mach.=5x. Total time is thus 5x+2/3=1 3/4h. Simply find x by doing 105min-40min/5 and that is 13.

solving fraction equations:  Write the solution in simplest form

 

6 1/4 = z + 1 5/8

Answers

6 1/4 = z  + 1 5/8
6 1/4 - 1 5/8 = z + 1 5/8 - 1 5/8 Isolate variable
6 2/8 - 1 5/8 = z    Least common denominator
4 5/8 = z Simplify

Answer:4 5/8 = z Simplify

What is the common difference between the elements of the arithmetic sequence below? –18, –22.5, –27, –31.5, –36

Answers

Answer
Common difference = -4.5

Explanation.
An arithmetic sequence is a sequence in which the next term is found by adding a constant to the current term. This constant is called the common difference.
If a, b, c, d, e, ….is an arithmetic sequence, then the common difference will be,
Common difference = b-a=c-b=d-c=e-d…..
Now the question above common difference is;
Common difference = (-22.5)-(-14)=-4.5 

Answer:

-4.5

confirmed correct on edge

4 brothers share 3 pizzas equally.
How much of a pizza does each brother get ?

Answers

4 brothers /3 pizzas  = 3/4 each

4 x 3/4 = 12/4 
12/4 = 3 pizzas
3/4. No matter how many pizzas there are, if we divided each pizza to 4 slices, each one gets one slice from each pizza, that is 1/4 of a pizza for each brother. Since there are 3 slices of pizza, simply multiply 3*1/4=3/4.
 Hope this helped and if you need more help then just message me instead ok :) 

What is the value of a.

45/105 = 6/a

Answers

solve the rational equation by combining expressions and isolating the variable a and it equals 14
cross multiple and get 

45a = 630 divide both sides by 45

a = 630/45

a = 14

hope helped 

How to solve graping
3x-4y=12
2x+4Y=-12

Answers

hope it can help u!!!!!
Other Questions
How do you solve the following exponential equation by expressing each power of the same base and then equating the exponents?6^x-3/4= square rot of 6
Ok, I am stumped. Can I have some help please??Mrs. Fuller determines which four members of a population, labeled 01 to 47, will be in a sample by starting at line 128. Which members are in the sample? Table of Random Digits 126: 47934, 01885, 20967, 94841, 27015, 44184, 05108, 86788 127: 73786, 87922, 17887, 03752, 70494, 09483, 34655, 28603 128: 53537, 96428, 40115, 27467, 90826, 52358, 14570, 54184 129: 20266, 49844, 35186, 57228, 65170, 85907, 44662, 91487 130; 89214, 31076, 93733, 30746, 44086, 20432, 94732, 78616
Claire has $300 in her account she decided she is going to take out half of what is left in there at the end of each month
Solve x²-121=0 Answer choices 0 -11 11 11,-11