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2 years ago

Which expression is equivalent to the given expression?

Mathematics

2 answers:

kupik [55]2 years ago

7 0

The answer is 4a - 12 so b.

mina [271]2 years ago

6 0

Multiply 4 and a and then multiply 4 and -3 so 4a-12 answer is a bQQ✌

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1) Given a (x) =6x+2 and b (x) = -8x -11

Elenna [48]

I hope this helps you

8 0

2 years ago

Linear equation <br><br> 4.5 + 1.5y=24<br> x-y=4

WARRIOR [948]

4.5x + 1.5y = 24 ⇒ 4.5x + 1.5y = 24
1.0x - 1.0y = 4   ⇒<u> 4.5x - 4.5y = 18</u>
         <u>6y</u> = <u>6</u>
      6    6
       y = 1
   4.5x + 1.5(1) = 24
   4.5x + 1.5 = 24
   <u>    - 1.5 - 1.5</u>
      <u>4.5x</u> = <u>22.5</u>
   4.5 4.5
       x = 5
      (x, y) = (5, 1)

8 0

2 years ago

The perimeter of a parallelogram is 180 cm. One side exceeds the other by 10 cm. What are the lengths of adjacent sides of the p

Georgia [21]

Answer:

one side is 40 other is 50

Step-by-step explanation:

perimeter=180cm

let one side=length=x

Acc. to condition:

other side=width=x+10 (one side exceed other by 10)

perimeter= 2(length+width)

subtitue all values given above:

180=2(x+x+10)

180=2(2x+10)

2x+10=180/2

2x+10=90

2x=90-10

2x=80

x=40

now

lenght=x=40cm

width=x+10=40+10

width=50cm

8 0

2 years ago

Angeles weather is making her a sandwich to take to school for lunch she is a loud to have two things on her sandwich and she ca

FinnZ [79.3K]

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3 0

2 years ago

Read 2 more answers

Margie is standing on a bridge looking at the river below. She throws a rock over the bridge with an initial

Marina CMI [18]

<h2>Explanation:</h2><h2></h2>

Here we know that Margie is standing on a bridge looking at the river. She throws a rock over the bridge with an initial velocity of 60 ft/sec. The height, h, of the rock at the rime t seconds after it was thrown can be modeled by the equation:

$h(t) = -16t^2+60t+72$

To calculate how long will it take for the rock to reach the surface of the water, we need to set $h(t)=0$ . So:

$0 = -16t^2+60t+72 \\ \\ \\ \text{Using quadratic formula}: \\ \\ t=\frac{-b \pm \sqrt{b^2-4ac}}{2a} \\ \\ \\ a=-16 \\ \\ b=60 \\ \\ c=72 \\ \\ \\ t=\frac{-60 \pm \sqrt{60^2-4(-16)(72)}}{2(-16)} \\ \\ t=\frac{-60 \pm \sqrt{60^2-4(-16)(72)}}{2(-16)} \\ \\ t=\frac{-60 \pm \sqrt{8208}}{-32} \\ \\ t_{1}=4.70 \\ \\ t_{2}=-0.95$

Given that time can't be negative, we just choose the positive value. Therefore, <em>it will take 4.70 seconds for the rock to reach the surface water.</em>

6 0

2 years ago