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2 years ago

11

Which ordered pair is a solution of this

2 answers:

Mrrafil [7]2 years ago

8 0

The answer is (-1,-2)

First, we put the equation in standard form
Add the 2x to the other side leaving us with -y = 2x +4. They y must be positive so we multiply the whole equation by -1. This gives us y = -2x - 4. We then plug the coordinates in to find out which one comes out to be true.

The only one that comes out true is (-1,-2)
-2 = -2(-1) - 4 which comes out to -2 = -2 True.

Natalija [7]2 years ago

3 0

Answer:

(-1, -2)

Step-by-step explanation:

when x = -1 and y = -2,

(-2 · -1) - (-2) = 2 + 2 = 4

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Flying lessons on weekdays cost m dollars per hour. Flying lessons on weekends cost 1.2m dollars per hour. The expression 9m+3(1

lbvjy [14]

Answer:

The cost of lesson for 9 hours on weekdays and 3 hours on weekends

Step-by-step explanation:

Given

$Weekdays = \$m /hour$

$Weekends = \$1.2m/hour$

Required

What does 9m + 3(1.2m) represent

The expression can be split to:

9m and 3(1.2m)

<u>For 9m:</u>

From the question, we understand that:

$m = 1\ hour$

Multiply both sides by 9

$9 * m = 1\ hour * 9$

$9 m = 9\ hours$

This means that:

9m = the cost of lessons for 9 hours on weekdays

<u>For 3(1.2m):</u>

From the question, we understand that:

$1.2m = 1 \ hour$

Multiply both sides by 3

$3 * 1.2m = 1 \ hour * 3$

$3(1.2m) = 3 \ hours$

This means that:

3(1.2m) = the cost of lessons for 3 hours on weekends

Hence, the expression represents:

The cost of lesson for 9 hours on weekdays and 3 hours on weekends

7 0

2 years ago

PLEASE HELP ME PLS ITS MATH

Ganezh [65]

Answer:

9

Step-by-step explanation:

We know that

$h(t)=-16t^2+1296$

The balls hits the ground when h(t)=0, so

$-16t^2 + 1296=0 \\ \\ t^2 - 81=0 \\ \\ t^2 = 81 \\ \\ t=9$

Note I only considered the positive case because time must be positive.

7 0

11 months ago

Which of the binomials below is a factor of this trinomial ? x^2 - x - 20

Travka [436]

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2 years ago

A juggler perform in a telant contest. He is given 10 marks by each of the 4 judges. What’s his total score?

Mars2501 [29]

Answer:

40

Step-by-step explanation:

The answer is 40. There are 4 judges, and each gave him a 10. This can be shown by an equation.

1. 4 * 10 = total score

2. 40 = total score.

Hope this helps! (Please consider giving brainliest)

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3 years ago

Read 2 more answers

50% of all the cakes Jenny baked that week were party cakes,

Artist 52 [7]

Let the fraction be 5/5
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3 years ago