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Mrrafil [7]
3 years ago
7

Write the given sentence as an equation. Tim’s age in 7 years will be three times what it was 19 years ago

Mathematics
1 answer:
8_murik_8 [283]3 years ago
3 0
If n is Tim's age now:

n+7=3(n-19)

n+7=3n-57

n+64=3n

64=2n

n=32


Not sure if you needed to solve it, but I hope this helps anyway! :)
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How do I do these? I don’t understand how my teacher is teaching it so can someone explain
Mamont248 [21]

Here's some guidelines to help you:

For 1, 4, 5, and 6, they are 30-60-90 triangles. What's that you may ask? Well, it means that the sides have a predetermined length when one side is given. In #1 for example, you have a side of 11sqrt3, this means that "n" is 11 because in a 30-60-90 triangle, the longer side is the sqrt3 times the length of the shorter side. So to get the shorter side, we divide by sqrt3 to get 11. "m", or the hypotenuse, can be determined by taking twice the length of the shorter side. Since we figured out earlier that the shorter side is 11, 11 times 2 is 22. So the answer for #1 is n=11, m=22.

For 2 and 3, they are 45-45-90 triangles, triangles where the two lengths are the same and the hypotenuse is either leg length times sqrt2. In problem #2 for example, "y" must be 17 because one leg length is 17. "x", or the hypotenuse, is equal to 17sqrt(2) because 17 times sqrt(2).

You can apply all these rules to the other 4 problems I didn't explain.

Hope this long explanation clears your doubts!

5 0
2 years ago
Express 0.52 as a fraction
ioda
52/100
26/50
13/25
These will all do.
7 0
3 years ago
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a magazine contains fourteen pages. You open to a random page, the page number is three or seven..... where do i start i need to
Tems11 [23]
This is a question of randomness so there really is no answer. I would guess 7 since that is the center page and you're more likely to open it up in or near the middle
7 0
3 years ago
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Can you help me with this
irga5000 [103]

Answer: Planet A: Mars

              Planet B: Earth

Hope this helps

3 0
3 years ago
256 equals j subtracted from 199
Nikitich [7]

Answer:

-57

Step-by-step explanation:

256=199-j

256-199=57

5 0
3 years ago
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