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pochemuha
3 years ago
9

Za and Zb are complementary angles. Za measures 55°. What is the measure of Zb?

Mathematics
1 answer:
Over [174]3 years ago
6 0

Answer:

15

Step-by-step explanation:

hope this helps!

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What is the solution to the following system?
hodyreva [135]

Answer:

The correct answer is option 3. (20, 4, 5)

Step-by-step explanation:

To solve this problem we use the substitution method.


3x + 10y -12z = 40 (i)


x-5y = 0 (ii)


x - 4z = 0 (iii)  

We start by clearing x in (iii) and clearing y in (ii).


x = 4z (iii)


y = \frac{1}{5}x (ii)


Now we substitute (iii) in (ii)


y = \frac{4}{5}z (iv)


Now we substitute (iii) and (iv) into (i) and clear z.


12z + \frac{40}{5}z -12z = 40 (v)


8z = 40

z = \frac{40}{8}

z = 5

If z = 5 (v)


We substitute (v) in (iii) and then substitute (v) in (iv)


x = 20\\y = 4\\z = 5

The correct answer is option 3.

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3 years ago
The ratio of the heights of triangles is 2:3. find out the ratio of their areas.
Vitek1552 [10]
The answer to the question is 2:3
4 0
3 years ago
3 more than the product of 3 and y
Fudgin [204]

Answer:

3y+3

Step-by-step explanation:

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4 0
3 years ago
In this triangle, what is the measure of the exterior angle?
almond37 [142]
The question is set up oddly, but if they mean that one of the interior angles of a triangle measures 52degrees, what is the measure of its exterior angle, the you’d do the following: 180 (since they would form a linear pair) - 52 = 128 degrees.
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3 years ago
What is 45 divided by 765
dsp73

Answer:

.06 rounded to nearest hundreth

Step-by-step explanation:

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