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Svet_ta [14]
3 years ago
11

10

Mathematics
1 answer:
mihalych1998 [28]3 years ago
7 0

Step-by-step explanation:

If a+b=50

When b=30

a=50-b

a= 50 - 30

a=20

Therefore 20(a)+30(b)=50

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 The denominator of a fraction in simplest form is greater than the numerator by 3. If 7 is added to the numerator, and 5 added
jok3333 [9.3K]
So.. if we take the numerator to be say "a", then the denominator will be "a+3"

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a=
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4 0
3 years ago
Please answer this question, 30 points and will give brainliest!
kotykmax [81]

Answer:

∠C = 80 ° ; ∠ T = 40°.

Step-by-step explanation:

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An isosceles triangle has also two equal angles, which means that ∠CRS= ∠CSR.

Therefore, ∠C = 80 ° (180° – 50° - 50°)  because the sum of angles in a triangle is 180 degrees.  

∠C is the central angle of the arc RS.

∠ T is the inscribed angle of the arc RS.

An inscribed angle is half of a central angle that subtends the same arc on the circle, so the inscribed angle ∠ T is half of the central angle ∠C. Since ∠C = 80 °, we can easily determine the measure of ∠ T:  

80° divided by 2 is 40°.

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5 0
3 years ago
What is the value of 4^-2?
sammy [17]

Answer:

1/16

Step-by-step explanation:

<h2><em>Hope This Helps :)</em></h2><h2><em></em></h2>

7 0
3 years ago
Read 2 more answers
An investment in a savings account grows to three times the initial value after t years. If the rate of interest is 5%, compound
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4 0
3 years ago
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