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blagie [28]
4 years ago
15

What is 15 + 9 = ?(5 + 3)

Mathematics
1 answer:
faltersainse [42]4 years ago
4 0
3 because 5 times 3 it’s 15 and 3 times 3 is nine
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12. Linda walks through a road. If her walking speed increases from 1 m/s to 1.5 m/s, she will complete the walk 200 s earlier.
Katen [24]

Answer:

<u>600 meters</u>

Step-by-step explanation:

<u>Case 1 : Speed of 1 m/s</u>

  • d = v * t
  • d = 1 * t
  • d = t       [Equation 1]

<u>Case 2 : Speed of 1.5 m/s</u>

  • d = v * t
  • d = 1.5 * (t - 200)
  • d = 1.5t - 300 [Equation 2]

As distance in both cases is the same, equate the values of d from both equations.

  • t = 1.5t - 300
  • 0.5t = 300
  • t = 300 * 2
  • <u>t = 600 s</u>

Now, put the value of t in <u>Equation 1</u> to find d.

  • d = <u>600 meters</u>
7 0
2 years ago
Sharon started driving on the highway in the morning. The equation m=60h represents the number of miles, m, that Sharon has driv
Katen [24]

Answer: car 1, and car 4

Step-by-step explanation: if you look at the graphs you would have to look at where 1 hour would hit 60. If it’s past 60, the car is moving faster than sharon. Hope this helps!

3 0
3 years ago
Solve the system by substitution<br><br> x=y<br><br> 6x-3y=30
Tasya [4]

Answer: (x, y) = (10, 10)

Since x = y, replacing y with x in 6x - 3y = 30 we have 6x - 3x = 3x = 30, so x = 30/3 = 10. Then y = x = 10, so the solution is (10, 10).

i hope this helps! :D

8 0
3 years ago
HELP PLEASE!! The cost of calling Raymond's friend in Singapore is $3.00 plus $0.40 per minute. The cost as a function of time i
german

The equation would be y= .40x + 3 , The slope would be 2/5 and the y intercept would be 3 , the cost of a 20 minute call would be 11 dollars

7 0
3 years ago
A company gives each worker a cash bonus every Friday, randomly giving a worker an amount with these probabilities: $10 - 0.75,
Shkiper50 [21]

The worker's expected weekly bonus is $30.0

<h3>How to determine the worker's expected weekly bonus?</h3>

The amounts and the probabilities are given as:

x    $10       $50

P(x)  0.75    0.25

The worker's expected weekly bonus is calculated as:

E(x) = \sum x * P(x)

So, we have:

E(x) = $10 * 0.75 + $50 * 0.25

Evaluate the product

E(x) = $17.5 + $12.5

Evaluate the sum

E(x) = $30.0

Hence, the worker's expected weekly bonus is $30.0

Read more about expected values at:

brainly.com/question/15858152

#SPJ1

3 0
2 years ago
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