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andrezito [222]
3 years ago
9

Kevin is 3 times as old as Daniel. 4 years ago, Kevin was 5 times as old as Daniel. How old is Daniel now

Mathematics
1 answer:
matrenka [14]3 years ago
7 0
<span>K = 3D. K - 4 = 5(D - 4). K - 4 = 5D - 20. K = 5D - 16. 3D = 5D - 16. 16 = 2D. D = 8. K = 3 x 8. K = 24.</span>
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You leave your house and drive 7 miles north, then turn left and drive 24 miles west. How far are you from your house?
raketka [301]
Answer:
25 miles

Explanation:
We can use Pythagoras’ theorem for this

3 0
2 years ago
Find the value of x.
Mandarinka [93]

Answer:

⏩12°

Step-by-step explanation:

4x + 7° + 35° = 90° {being complementary angles }

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x = 48° / 4

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Hope it will help :)❤

6 0
3 years ago
Read 2 more answers
6. Given two numbers 8 and 5:<br> Write "the distance between 8 and 5" as a mathematical expression.
egoroff_w [7]

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3

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6 0
3 years ago
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Y varies directly with x and y = 12 when x =5 what is the value of y when x = 8
torisob [31]
Y and x are directly proportional, as stated by hypothesis. Let's use the rule of three to find y when x = 8.

x=5 --> y=12
x=8 --> y=?

? = (8*12)/5 = 96/5 = 19.2

So y directly varies with x, and y=12 when x = 5, then y=19.2 when x=8.

Hope this Helps! :D
3 0
4 years ago
What is the radius of 81π square inches​
MrRa [10]
It is 9 inches because the formula for the area of a circle is πr2 where the r represents the radius of the circle

The pi can be canceled out =

πr2 and 81 π leaving with

R2 and 81

The r2 represents a square number. So square root 81 and you would result in 9 as your answer
3 0
4 years ago
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