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yan [13]
3 years ago
9

Need help with this question please thank you

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
8 0
A - 90 degrees
B - 110 degrees
C - 78.5 = \pi 5 to the second power
D - 15.3

To find A, the point of intersection of a tangent to the center of a circle always makes a 90 degree angle.

To find B, do 360 subtracted by all known angles while keeping in mind the angle opposite to RST. 

To find C, use the formula to find an area of a circle. In this case, OP = pi r squared.

To find D, you need to realize that it is just a fraction of the circle which is 70 degrees. So you need to use the fraction to find the answer, to do so you use (70/360) times 78.5 which gets you 15.3.

Hope this helps!

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Combine like terms to simplify the expression:<br> 1.17-0.07a+(-3.92a)
Pachacha [2.7K]

After combining like terms and simplifying 1.17-0.07a+(-3.92a) we get 1.17-3.99a

Step-by-step explanation:

We need to combine like terms to simplify the expression:

1.17-0.07a+(-3.92a)

Like terms: The terms are like when they have same variable and same exponent.

Solving:

1.17-0.07a+(-3.92a)\\=1.17-0.07a-3.92a\\=1.17+(-0.07a-3.92a)\\=1.17+(-3.99a)\\=1.17-3.99a

So, After combining like terms and simplifying 1.17-0.07a+(-3.92a) we get 1.17-3.99a

Keywords: Solving Expressions

Learn more about Solving Expressions at:

  • brainly.com/question/11207748
  • brainly.com/question/2154850
  • brainly.com/question/4279146

#learnwithBrainly

3 0
3 years ago
Need help can someone plz help me solved this problem ASAP! Need help I will mark you as brainiest
MrRissso [65]

Answer:  2, 6

<u>Step-by-step explanation:</u>

Triangle Inequality Theorem states that the sum of two sides must be GREATER than the third side.

RS + ST > RT    and     RS + RT > ST     and     ST + RT > RS

2x + 4x > 12                  2x + 12 > 4x                  4x + 12  > 2x

       6x > 12                          12 > 2x                          12  > -2x

         x > 2                            6 > x                             -6 < x

         2 < x                             x < 6                             invalid

Answer:  2 < x < 6      

Graph:     O----------------------O

                2                          6

<em> Note: -6 is invalid because you cannot have a negative length. </em>                     

5 0
4 years ago
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