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iogann1982 [59]
3 years ago
5

A) Expand and simplify (4x + 3)(2x - 5)

Mathematics
2 answers:
Delicious77 [7]3 years ago
6 0

Answer:

8x² - 14x - 15

Step-by-step explanation:

(4x + 3)(2x - 5)

8x² - 20x + 6x - 15

8x² - 14x - 15

alina1380 [7]3 years ago
3 0

Answer:

Step-by-step explanation:

Use FOIL, first outside inside last.

4x*2x - 5*4x + 3*2x - 3*5

8x^2-20x+6x-15\\8x^2-14x-15\\

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Suppose y varies directly with x and y=12 when x=-3 what is the value of y when x=6?
coldgirl [10]

Answer:

A. -24

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a directly or proportional variation if it can be expressed in the form k=\frac{y}{x} or y=kx

In this problem we have

For x=-3, y=12

Find the value of the constant of proportionality k

k=\frac{y}{x}

substitute the given values

k=\frac{12}{-3}=-4

so

The linear equation is equal to

y=-4x

what is the value of y when x=6?

substitute the value of x in the linear equation and solve for y

y=-4(6)=-24

7 0
3 years ago
A triangular pyramid and its net are shown. Rain uses the calculations below to conclude
Fynjy0 [20]

Answer:

is correct, he determines it correctly, he solved it correctly, 238.5

Step-by-step explanation:

7 0
3 years ago
PLEASE HELP!!! A group has at most $140 to spend on an event space. The inequality 15h + 40 140 represents the cost to rent the
Zielflug [23.3K]

9514 1404 393

Answer:

  h ≤ 6 2/3

Step-by-step explanation:

The inequality is presumed to be ...

  15h +40 ≤ 140

  15h ≤ 100

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The graph shows h ≥ 0, because the inequality is only reasonable for h ≥ 0.

3 0
2 years ago
Jase's farm has 9 chickens, each of which laid 3 eggs. Jases farm has 4 horses. Edna's farm has chickens which laid a total of 2
s344n2d4d5 [400]

Answer:

You can use the basic multipication as an infrence



5 0
3 years ago
A number divided by six is twenty-one
sdas [7]

Answer:

126

Step-by-step explanation:

if you divide 126 by 6 you get 21

the way you get 126 is you times 6 by 21 (reverse operation) to get that unknown number which is 126 in this case

4 0
3 years ago
Read 2 more answers
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