He is right because if you find the unit rate and multiply it by the miles per hour you get the 150 miles per hour.
Answer:
10
Step-by-step explanation:
| 2+3(-4)|
Using PEMDAS, multiply first
| 2+-12|
Then add
| -10|
Then take the absolute value
10
Sarah bought 3 bracelets and 2 pairs of sunglasses.
Step-by-step explanation:
Total items bought = 5 items
Total spent = $24
Cost of one bracelet = $5
Cost of pair of sunglasses = $4.50
Let,
x be the number of bracelet bought.
y be the number of sunglasses bought.
According to given statement;
x+y=5 Eqn 1
5x+4.50y=24 Eqn 2
Multiplying Eqn 1 by 5
![5(x+y=5)\\5x+5y=25\ \ \ Eqn\ 3](https://tex.z-dn.net/?f=5%28x%2By%3D5%29%5C%5C5x%2B5y%3D25%5C%20%5C%20%5C%20Eqn%5C%203)
Subtracting Eqn 2 from Eqn 3
![(5x+5y)-(5x+4.50y)=25-24\\5x+5y-5x-4.50y=1\\0.50y=1](https://tex.z-dn.net/?f=%285x%2B5y%29-%285x%2B4.50y%29%3D25-24%5C%5C5x%2B5y-5x-4.50y%3D1%5C%5C0.50y%3D1)
Dividing both sides by 0.50
![\frac{0.50y}{0.50}=\frac{1}{0.50}\\y=2](https://tex.z-dn.net/?f=%5Cfrac%7B0.50y%7D%7B0.50%7D%3D%5Cfrac%7B1%7D%7B0.50%7D%5C%5Cy%3D2)
Putting in Eqn 1
![x+2=5\\x=5-2\\x=3](https://tex.z-dn.net/?f=x%2B2%3D5%5C%5Cx%3D5-2%5C%5Cx%3D3)
Sarah bought 3 bracelets and 2 pairs of sunglasses.
Keywords: linear equations, subtraction
Learn more about subtraction at:
#LearnwithBrainly
Answer:
29/42
Step-by-step explanation:
Answer: 2 out of 5
Step-by-step explanation: