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Kay [80]
3 years ago
15

Need help with this question.​

Mathematics
1 answer:
sergejj [24]3 years ago
4 0

Answer:

12 and 93.

Step-by-step explanation:

Let the grandsons age be x then Mr. Roger's age = 8x - 3.

Five years ago the grandson's age was x-5 and Mr Rogers was 8x - 8 years old , so:

8x - 8 - (x - 5) = 81

8x - 8 - x + 5 = 81

7x = 81 + 8 - 5 = 84

x = 12.

So the grandson is 12 and Mt Rogers is  8*12 - 3 = 93.

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Can someone help please?
Marina CMI [18]

Answer:

  g(7) = 16

Step-by-step explanation:

When evaluating piecewise-defined functions, the first step is to determine which domain the value of the independent variable falls into. Then the associated function is evaluated in the usual way.

__

For x=7, the applicable domain is (2, ∞). This means the applicable function is ...

  g(x) = (x +1)(x -5)

For x=7, this is ...

  g(7) = (7 +1)(7 -5) = (8)(2)

  g(7) = 16

6 0
2 years ago
Dorian buys 2 pounds of almonds for $21.98 and 3 pounds of dried apricots for $
arsen [322]

Cost of 2 pounds of almonds = $ 21.98

So, cost of 1 pound will be = \frac{21.98}{2} = 10.99

Cost of 3 pounds of dried apricots = $26.25

So, cost of 1 pound will be = \frac{26.25}{3} = 8.75

So, comparing the two costs, the cost of 1 pound of dried apricot is less than 1 pound of almonds by $2.24

4 0
4 years ago
Mateo has been studying after school while preparing for a test retake. His work paid off ! His score on the retake was a 94. Th
Feliz [49]

Answer:

28%

Step-by-step explanation:

We know that 100 percent is total. Mateo first scored 68/100, then a retake got his score up to 94/100.

First, subtract the two numbers

94 - 68 = 26

Put 26 over 94 to make this 26/94

Divide to get 0.28 (simplified and rounded)

So the increase was 28%

7 0
3 years ago
Read 2 more answers
A football stadium splits ticket sales in ratio of 3 : 4 between the away team and the home team. The home team make £36,000. Wh
Naddika [18.5K]
<h3>Answer is 63,000 pounds</h3>

The ratio 3:4 means for every 3 pounds made in away team tickets versus home team tickets. Multiply both sides by 9000 to have that 4 turn into 36000. The ratio 3:4 will then turn into 27000:36000

With this new ratio, we see that the away team pulls in 27000 and the home team pulls in 36000. Add the two amounts to get the final answer

27000+36000 = 63000

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

We could alternatively add 3 and 4 (from the ratio 3:4) to get 3+4 = 7. Then multiply by that same scale factor 9000 getting 9000*7 = 63000.

5 0
3 years ago
PLEASE HELP..MATH 8TH GRADE​
jolli1 [7]

Answer. z = ± √10 = ± 3.1623

8 0
3 years ago
Read 2 more answers
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