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Sunny_sXe [5.5K]
3 years ago
5

Tell whether the angles are complementary or supplementary. Then find the value of 

Mathematics
1 answer:
solniwko [45]3 years ago
3 0
If two angles, when added together, equal 90 degrees, then they are complementary. If x+(x-20)=90, then 2x-20=90, and 2x=70. This means that x=35. Hope this helps!
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5. Naomi was watching a game show where
Solnce55 [7]

Answer:

C) 50

Step-by-step explanation:

This is because -10 x 5 = -50 and if you have 20 points to start with, you just do 20-(-30)=20 and two minuses make a plus so it is 20 + 30 which is 50.

8 0
3 years ago
Bill had $5.42 and earned 2.25 he spent $3.78 how much did he have left
inna [77]

Answer:

3.89

Step-by-step explanation:

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Hope this helps

8 0
3 years ago
If a board game was originally $25 and it was on sale for $18 what is the percent of discount
fredd [130]
The percent of the discount is 28 percent off
4 0
3 years ago
Urgent help please
rosijanka [135]

Let's assume the frequency of sound be f and wave length is w.

Given that, the frequency of sound varies inversely as the wavelength.

So, we can set up an equation as following:

f*w = k Where k= constant of variation.

Other information is, the frequency of a musical note is 276 cycles per second when the wavelength is 1.2m.

So, next step is to plug in f = 276 and w = 1.2 in the above equation to get the value of k.

276 * 1.2 = k

So, k = 331.2

Next step is to plug in k = 331.2 in the above equation. So,

f * w = 331.2

Now we need to find the wave length : w when frequency : f = 600.

Therefore,

600 * w = 331.2

w = \frac{331.2}{600}

So, w = 0.552

Hence, the wave length is 0.552 m.

Hope this helps you!.

5 0
3 years ago
Please help don't understand how to do this, show steps
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First get what equals 20
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