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Zina [86]
3 years ago
12

Is the ordered pair (-2,9) as a solution of the equation y=x-7

Mathematics
1 answer:
Alexeev081 [22]3 years ago
3 0
Hi there! To answer that question, no. -2 is the x value and 9 is the y value. When you plug them in, -2 -7 is -9, not positive 9. So no. The order pair (-2, 9) is not a solution to the equation of y = x - 7.
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You have just timed a person doing a hair cut for the first time. It took 50 minutes. What unit improvement factor learning curv
Sladkaya [172]

Answer: C. 70 percent

Step-by-step explanation:

Given, Time for the first unit = 50 minutes

Time for the second unit = 35 minutes

The unit improvement factor learning curve = (The time for the second unit) ÷ (time for the first unit) x 100.

So, The unit improvement factor learning curve  = 35÷ 50 × 100 = 70 percent.

Hence, the correct option is "C. 70 percent".

3 0
3 years ago
.A bag contains 3 red checkers and 5 black checkers. A checker is selected, kept out of the bag, and then another checker is sel
cupoosta [38]

Answer: 15 / 56

Step-by-step explanation:

Number of red checkers = 3

Number of black checkers = 5

Total number of checkers = 8

P(black, then red) = 5/8 × 3/7 = 15/56

We should note that the probability to pick a black checker first will be 5 out of 8. Then, there'll be 7 checkers left and the probability to pick a res checker will be 3/7. We then multiply the probabality of each together.

5 0
3 years ago
What fraction of the shape is white
ICE Princess25 [194]

Answer:

3 over 8

Step-by-step explanation:

The total of box numbers is 8 and there are 3 white boxes. So, the total goes on the bottom and the amount of white boxes goes on top.

Hope this helped!

7 0
3 years ago
Read 2 more answers
Ben is 20 years older than Daniel. Ben and Daniel first met two years ago. Three years ago, Ben was 3
fgiga [73]

Answer:

  33

Step-by-step explanation:

3 years ago, the difference in ages was twice Daniel's age. So, Daniel was 20/2 = 10 years old at that time. Ben was 30.

Now, Ben is 33.

_____

If two numbers have a ratio of 3:1, their difference is (3-1) = 2 times the smaller number.

4 0
3 years ago
A cylinder has a height of 14 feet. Its volume is 12,704.44 cubic feet. What is the radius of the cylinder?
Alenkinab [10]
<h3 /><h3>V. Cylinder =  π . r² . h</h3>

12,704.44 = 3.14 × r² × 14

12,704.44 = 3.14 × 14 × r²

12,704.44 = 43.96 × r²

r² = 12,704.44/43.96

r² = 289

r = √289

r = 17

<h3>#CMIIW</h3>

3 0
3 years ago
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