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Sloan [31]
3 years ago
10

G(x)=x^2 −4x+3; Find g(−1)

Mathematics
2 answers:
KiRa [710]3 years ago
6 0

Answer:

8

Step-by-step explanation:

Gelneren [198K]3 years ago
4 0
I believe the answer would be 8:)
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Now try 50 for x. If x=50,what I'd y when y=x-20? Does that work with the other equation?
SSSSS [86.1K]
X= 50
Replace the x with the given number.
Y= 50-20
Y= 30
5 0
3 years ago
In triangle ABC, a = 9, c = 5, and angle B = 120°. Find the measure of angle A to the nearest degree. Show your work.
slamgirl [31]

<u>Answer:</u>

Angle A = 39°

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

We are given that there is a triangle ABC where a = 9, c = 5 and angle B = 120° and we are to find the measure of angle A.

But first we need to find the side b using the law of cosine:

b^2 = a^2 + c^2- 2a*c*cos(120)

b^2 = 81 + 25 - 2*9*5*(-0.5)

b=\sqrt{151}

Now finding angle A using law of cosine:

cos(A) = \frac{b^2+c^2-a^2}{2b*c}

cos(A) = \frac{151+25-81}{2*12.29*5}

cos A=0.7730

A=39.38

Therefore, the measure of angle A = 39°.

7 0
3 years ago
Read 2 more answers
Explain how to solve this problem.
Leya [2.2K]
The answer is A. <span>Work backward. 
Hong started talking with her friends at 10:10. 
Hong started eating at 9:30. 
Hong started shopping at 8:45. 
Hong woke up at 8:25.</span>
6 0
2 years ago
Read 2 more answers
Casey is buying snacks for a class trip. She has 16 snacks left over from the last trip. She buys snacks by the case to get a go
Elan Coil [88]

Answer:

Your answer is 10

Step-by-step explanation:

160 devided by 16 = 10

3 0
2 years ago
What is the area of a sector with a central angle of 8 π/11 radians and a radius of 7.2 ft? use 3.14 for π and round your final
coldgirl [10]

Answer:

59.19 ft^2

Step-by-step explanation:

step 1

Find the area of the circle

The area of the circle is equal to

A=\pi r^{2}

we have

r=7.2\ ft

\pi =3.14

substitute

A=(3.14)(7.2)^{2}

A=162.78\ ft^2

step 2

we know that

The area of a circle subtends a central angle of 2π radians

so

using proportion

Find out the area of a sector with a central angle of 8 π/11 radians

\frac{162.78}{2\pi }\frac{ft^2}{rad} =\frac{x}{(8\pi/11)}\frac{ft^2}{rad} \\\\x=162.78(8/11)/2\\\\x=59.19\ ft^2

7 0
3 years ago
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