Find the value of 7x+3y when x=12 and y=-6

Mathematics

2 answers:

miv72 [106K]3 years ago

7 0

Answer:

Step-by-step explanation:

To get the values we just have to substitute the number of the value

7x + 3y = 7(12) + 3(-6)

84 - 18 = 66

kenny6666 [7]3 years ago

6 0

Answer:

Step-by-step explanation:

7 x + 3 = 7 (12) + 3 (-6)

84 - 18 = 66

Substitute the value of the variable into the expression and simplify.

You might be interested in

What integer represents the following situation? ________________. A scuba diver is 43 feet under the ocean conducting research

Softa [21]

an Integer is a while positive or negative number. so your integer would be 43

8 0

3 years ago

Read 2 more answers

6) 8x + 38 =-34-6 - 4x)

nlexa [21]

Answer:

-6.5 would be your answer

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A profit of a football club after a takeover is modeled by p(t) = t3 - 14t2 + 20t + 120, which t is the number of years after th

Bogdan [553]

T = 5, so after 5 years
p(t) = t^3 - 14t^2 + 20t + 120

Take derivative to find minimum:
p’(t) = 3t^2 - 28t + 10

Factor to solve for t:
p’(t) = (3t - 2)(t - 5)
0 = (3t - 2)(t - 5)

0 = 3t - 2
2 = 3t
2/3 = t

Plug 2/3 into original equation, this is a maximum. We want the minimum:

0 = t - 5
5 = t

Plug back into original:
5^3 - 14(5)^2 + 20(5) + 120
125 - 14(25) + 100 + 120
125 - 350 + 220
- 225 + 220
p(5) = -5

6 0

3 years ago

A dice is rolled and a marble is selected at random from a bag with 2 red marbles, 2 green marbles, 2 yellow marbles, 1 purple m

laila [671]

1/3 times 6/8

1/3 times 3/4

So, the answer is 3/12

Simplify: 1/4

4 0

3 years ago

Given the following system of equations:

kompoz [17]

Answer:

(D) Divide the first equation, $-4x + 8y = 16$ , by 2.