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Naya [18.7K]
3 years ago
13

15 + 100 • [12 – (12 – 3 • 2)] + 6

Mathematics
1 answer:
lara31 [8.8K]3 years ago
4 0

Multiple: 3 * 2 = 6

Subtract: 12 - 6 = 6

Subtract: 12 - 6 = 6

Multiple: 100 * 6 = 600

Add: 15 + 600 = 615

Add: 615 + 6 = 621


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PLEASE someone help its due tonight im almost done
marusya05 [52]
<h3>Answers:</h3>
  • 48 seconds
  • 3624 feet

========================================================

Explanation:

x = number of seconds that elapse

y = altitude (aka height) of the plane

The equation for plane A is

y = 20.25x+2652

because it starts off at 2652 ft in the air, and then adds on 20.25 feet per second which is what the 20.25x describes

The equation for plane B is

y = 75.5x

The y intercept is zero because plane B starts on the ground, aka height 0.

------------------

The system of equations is

\begin{cases}y = 20.25x+2652\\y = 75.5x\end{cases}

If we want to know when they'll reach the same height (y), then we can set the two right hand sides equal to each other and solve for x.

75.5x = 20.25x+2652

75.5x-20.25x = 2652

55.25x = 2652

x = (2652)/(55.25)

x = 48

The two planes reach the same altitude at exactly <u>48 seconds</u>

That altitude is <u>3624 feet</u> because

  • y = 20.25*x + 2652 = 20.25*48+2652 = 3624
  • y = 75.5*x = 75.5*48 = 3624

Notice I plugged x = 48 into each equation and I got the same y value of y = 3624. This helps confirm the answers.

7 0
2 years ago
What is 15456415 times 45415
masha68 [24]

Answer: 701953087225 is the answer

4 0
3 years ago
Carlos is going for a walk. He walks for
seraphim [82]
I pretty sure the answer is 3.2 hours. I'm not completely sure though....
3 0
3 years ago
Un número multiplicado 2 veces que me de 4633
lions [1.4K]

Answer:

2316

Step-by-step explanation:

divide 4633 por 2 y la respuesta es 2316 (no abra el enlace, te lleva a un sitio inapropiado)

3 0
3 years ago
Solve x show your work​
Bezzdna [24]

Answer:

55+x+74+54= 180 degree ( being the sum of all angle of the triangle )

or, 183 +x = 180degree

or, x=(180-183)degree

or, x= -3degree ans

4 0
3 years ago
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