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Luba_88 [7]
3 years ago
7

Evaluate each expression for the given value of the variable 1 + r2-r; r=5

Mathematics
1 answer:
Sholpan [36]3 years ago
4 0
To solve this expression, we need to plug r into the equation.

1 + (5)2 - (5)
= 1 + 10 - 5
= 11 - 5
= 6

Hope this helps!
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AM and AN are tangent to circle C. If AM measures 2.5 cm, what is the measure of AN?
Vera_Pavlovna [14]

The measure of AN form the given figure is 2. 5cm. Option D

<h3>How to determine the length</h3>

It is important to note that if from one external point, two tangents are drawn to a circle then they have equal tangent segments.

We have that,

AM ≅ AN

so, if AM  measures 2. 5cm

AN measures 2. 5cm

Thus, the measure of AN form the given figure is 2. 5cm. Option D

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3 0
2 years ago
40 + 2b3 when<br> b = 5 and c= 1.2
kramer

9514 1404 393

Answer:

  254.8

Step-by-step explanation:

Substitute the numbers where the variables are and do the arithmetic.

  4c +2b³ = 4(1.2) +2(5³) = 4.8 +250 = 254.8

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It can also work to let a calculator or spreadsheet do the math for you, once you specify the function.

8 0
3 years ago
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kumpel [21]

Answer:

Hi there!

Your answer is:

81

Step-by-step explanation:

First, simplify within parentheses.

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7 0
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sveta [45]

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