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Musya8 [376]
3 years ago
8

Two of the angles in a triangle measure 10° and 80°. What is the measure of the third angle?

Mathematics
2 answers:
Gnoma [55]3 years ago
7 0

Step-by-step explanation:

Lets third angle be x

or,10°+x+80°=180° ( sum of triangle )

or,90°+x=180°

or,x=180°-90°

or,x=90°

Bogdan [553]3 years ago
6 0

Answer:

90°

Step-by-step explanation:

All angles inside a triangle add up to 180 so:

180 - 10 - 80 = 90

Therefore, the 3rd angle is 90°

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Which problem is solved using this model? 15÷15   3÷115    3÷15  15÷15   https://static.k12.com/nextgen_media/assets/1503272-MAT
Pie

Answer:

As the model is shown below.

As per model a thing is divided into five parts.There are three things and each one of them is being divided into five equal parts.

The value of fifth part of each of them is 1/5.

If we consider each part of a thing as one,

So, total number of parts = 15

Total thing=3

So, the answer of the above model is 3÷ 15.

Out of all the options which are 15÷15  , 3÷115 ,   3÷15,  15÷15  →3÷15 is correct.





5 0
3 years ago
What is 300 out of 2,530 as a percent
patriot [66]
In order to get the answer of that, let's understand first that the question can first be presented as a fraction form. So by breaking down the question, we will be able to get the fraction form which is 300/2530. Now in order to get the percent form of that, we simply divide 300 and 2530. The answer to that will result in 0.11858. Now we know for a fact that in order to make a decimal a percentage, we just have to move the decimal point two times to the right. So the answer is 11.858%
4 0
3 years ago
Read 2 more answers
Please help will give Brain!!
leonid [27]

Answer:

Step-by-step explanation:

You are correct. It's 8/5

7 0
3 years ago
Read 2 more answers
The half life of silicone-32 is 710 years. If 30 grams is present now, how much will be present in 300 years?
Irina18 [472]

Answer:

22.38 g of silicone-32 will be present in 300 years.

Step-by-step explanation:

A radioactive half-life refers to the amount of time it takes for half of the original isotope to decay and its given by

                                           N(t)=N_0(\frac{1}{2})^{\frac{t}{t_{1/2}}

where,

N(t) = quantity of the substance remaining

N_0 = initial quantity of the substance

t = time elapsed

t_{1/2} = half life of the substance

From the information given we know:

  • The initial quantity of silicone-32 is 30 g.
  • The time elapsed is 300 years.
  • The half life of silicone-32 is 710 years.

So, to find the quantity of silicone-32 remaining we apply the above equation

N(t)=30\left(\frac{1}{2}\right)^{\frac{300}{710}}=30\left(\frac{1}{2}\right)^{\frac{30}{71}}\approx22.38 \:g

22.38 g of silicone-32 will be present in 300 years.

7 0
3 years ago
The function h(t) = 150 – 9t represents the height of a ball dropped from 150 feet after t seconds. What will the height of the
Alekssandra [29.7K]
After 1.4 seconds, t = 1.4.
h(t) = 150 - 9(1.4)
Multiply 9 by 1.4 to get 12.6. 
h(t) = 150 - 12.6 
Subtract 12.6 from 150 to get 137.4. 
h(t) = 137.4.
The height of the ball would be 137.4 after 1.4 seconds. 
Hope this helps!
3 0
3 years ago
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