MATHEMATICS HIGH SCHOOL

Multiply: (6x - 1)(6x +1)

Answers

Answer 1
Answer: i’m not positive but i think it’s 36x^2 -1
Answer 2
Answer:

Answer:

36x^2 -1

Step-by-step explanation:

6x times 6x= 36x^2

6x times 1= 6x

-1 times 6x= -6x

-1 times 1= -1

so, ...

36x^2+6x+(-6x)+(-1) = 36x^2 -1

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The graph of y=f(x) is shown below. What are all of the read solutions of f(x) = 0?

Answers

Answer:

0, -1, -3

Step-by-step explanation:

f(x) = y = height of the line plotted

if you treat the x axis as the "ground" or "floor"....you're looking for the point when the graph "hits" the "floor", meaning zero height.
The answers are 0,-1,-3

In the school cafeteria, students choose their lunch from 3 sandwiches, 3 soups, 4 salads, and 2 drinks.How many different lunches are possible for a student who chooses exactly 1 sandwich, 1 soup, 1 salad, and 1 drink?

Answers

The student can choose any one of 3 sandwiches. For each of those . . .
He can choose any one of 3 soups.  For each of those . . .
He can choose any one of 4 salads.  For each of those . . .
He can choose either one of 2 drinks.

Total possibilities = (3 x 3 x 4 x 2) = 72 different lunches.

Let f(x) = x^2 + 6 and g(x) = x+8/x. Find (g ° f)(-7)

Answers

(g o f)(x)=g(f(x))

basically put f(x) for every x in g(x) or evaluate f(x) for taht given value of x and then sub that for x in g(x)
evaluate woould be easier
f(-7)=(-7)^2+6
f(-7)=49+6
f(-7)=55

sub for x in g(x)
g(55)=55+8/55
g(55)=63/55
g(55)=1.145454545454

answer would be 63/55
Short Answer: 55.145454545...
Working Out: gof(x) = (x^2 + 6) + 8/(x^2 + 6)
gof(-7) = ((-7)^2 + 6) + 8/((-7)^2 + 6)
= (49 + 6) + 8/(49 + 6)
= 55 + 8/55
= 55 + 0.145454545...
= 55.145454545...
                      

(a)
127.5
is what percent of
51
?

Answers

To solve this, you need to divide 127.5 by 51:
127.5/51 = 2.5
To find the percent, multiply 2.5 by 100:
2.5 x 100% = 250%
So 127.5 is 250% of 51

A countertop is 16 feet long and 3 feet wide. what is the area of the countertop in square meters

Answers


The area of the countertop is (16-ft x 3-ft) = 48 feet² .

1 foot = 0.3048 meter (rounded)

(1 foot)² = (0.3048 meter)² = 0.0929 meter²

48 feet² = (48 x 0.0929) =  4.459 meter² (rounded)

1. Find the complementary and supplementary angles of the following36°,54°,73°​

Answers

The complementary angle of 36° is 54°, and the supplementary angle of 36° is 144°.
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