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marissa [1.9K]
3 years ago
12

Find the value of each variable. line / is a tangent​

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
5 0

Check the picture below.

for "b", well, recall that the sum of all interior angles in a triangle is 180°.

for "a", "c" and "d", well, all those are just <u>intercepted arcs</u>.

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F(x) = -4x2 – 7x + 4<br> Find f(-7)
notka56 [123]

Answer:

<h2> f(-7) = 249 </h2>

Step-by-step explanation:

f(x)  =  - 4 {x}^{2}  - 7x + 4

To find f(-7) , substitute the value of x that's - 7 into f(x). That is for every x in f(x) replace it with - 7

We have

f( - 7) =  - 4 ({ - 7})^{2}  - 7( -7 ) + 4 \\  = 4(49) + 49 + 4 \\  = 196 + 53 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:

We have the final answer as

<h3>f( -7) = 249</h3>

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3 years ago
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Answer:

Hope this helps you.

The answer is 61, x+40+5x+14=180, so x equals 21. 5(21)+14 ends up equaling 119, so 180-119 equals 1

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4 years ago
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