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Irina18 [472]
3 years ago
14

I need help with number 5 please

Mathematics
1 answer:
bearhunter [10]3 years ago
8 0
I believe the answer is b
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I'll give brainliest for the first and correct answer! The perimeter of a triangle is 135. The sides have lengths a, b, and c. T
irina [24]

9514 1404 393

Answer:

  (a, b, c) = (30, 50, 55)

Step-by-step explanation:

If we rewrite the ratio of A to B so it has the same number of ratio units as in the ratio of A to C, we have ...

  A : B = 3 : 5 = 6 : 10

  A : C = 6 : 11

so ...

  A : B : C = 6 : 10 : 11

The total number of ratio units is 27. They stand for 135 real units, so each one stands for 135/27 = 5 real units.

Multiplying the last ratio statement by 5, we find the lengths of each of the sides.

  A : B : C = 6 : 10 : 11 = 30 : 50 : 55

The side lengths are (a, b, c) = (30, 50, 55).

5 0
3 years ago
3x + 5y = 7<br> -3x - 2y = -1
Oksanka [162]

Answer:

(-1,2) y=2 x=-1

Step-by-step explanation:

This is a system of equations and in this you see there is 3x and negative three x. To solve this you need tp get rid of one of the variables. so we can add the two equations together to get 3y=6. This means that y=2 if we divide by 3 on both sides. Then we just plug 3 in for y and we get 3x+10=7. We subtract 10 on both sides to get 2x=-3 which means x=-1.

6 0
2 years ago
Record your<br> ! 1)<br> 5x = 125
KengaRu [80]
The answer is X= 25
You just have to divide 125 by 5
3 0
2 years ago
How to do this question
RoseWind [281]
Idek hun I don’t see anything
3 0
3 years ago
In the triangle below what is the sine of 45°
Leona [35]

Answer:

..........b

Step-by-step explanation:

6 0
2 years ago
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