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makkiz [27]
3 years ago
15

If f(x)=x^2-45, and f(2a)= -20, what is the value of a

Mathematics
1 answer:
Klio2033 [76]3 years ago
5 0
Hope this helps!!! :)

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Can someone please answer this for me I'm begging
GrogVix [38]
If the length of JK is 16.4 miles, it will be diameter of this circle, the radius will be JK/2 = 8.2 miles

As we know the length of circle is 2π*r  in this case r = 8.2

The arc JM is 1/4 length of the whole circle so arc JM = (2π*8.2)*(1/4) = 2π*8.2/4 = π*8.2/2 = π*4.1

if we assume that π=3.14 the answer will be 3.14 * 4.1 = 12.874.... And as the answer needs to be rounded to the nearest tenth it will be 12.874≈12.9

So the answer will be 12.9
8 0
3 years ago
Please Help!!!
marishachu [46]
The second one, and you as well ☺️
8 0
3 years ago
Which of the following is the value of x?<br><br> A. 2<br><br> B.11<br><br> C. 20 <br><br> D. 29
Lunna [17]

Answer:

c

Step-by-step explanation:

180= 45+ (5x+35)

-45 -45

135 = 5x + 35

-35 -35

100 = 5x

/5 /5

x=20

5 0
3 years ago
Natalie's aunt gave her $47 to spend on clothes at the mall. She bought 4 shirts that cost $4 each and a pair of pants that cost
Murljashka [212]

Answer:$18

Step-by-step explanation:4 * 4 = $16. One pair of pants = $13. 16 + 13 = $29. 47 - 29 = $18

5 0
3 years ago
If y = 3x - 4 and the domain is {-3,-1,4}, find the range.
aivan3 [116]
3x - 4 = <span>3(-3)  - 4 = -9 - 4 = -13
</span>3x - 4 = <span>3(-1.4)  - 4 = -4.2 - 4 = -8.2

answer
range { -13, -8.2}</span>
4 0
3 years ago
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