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Katena32 [7]
2 years ago
11

An archery video game has an auto-aim feature.

Mathematics
1 answer:
iren2701 [21]2 years ago
4 0

Answer:12

Step-by-step explanation:

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Let $f(x) = x^2 + 4x - 31$. for what value of $a$ is there exactly one real value of $x$ such that $f(x) = a$?
enot [183]

To solve for this, we need to find for the value of x when the 1st derivative of the equation is equal to zero (or at the extrema point).

So what we have to do first is to derive the given equation:

f (x) = x^2 + 4 x – 31

 

Taking the first derivative f’ (x):

f’ (x) = 2 x + 4

 

Setting f’ (x) = 0 and find for x:

2 x + 4 = 0

x = - 2

 

Therefore the value of a is:

a = f (-2)

a = (-2)^2 + 4 (-2) – 31

a = 4 – 8 – 31

a = - 35

7 0
3 years ago
Which scale factors produce a contraction under a dilation of the original image? Select each correct answer. ​−6​ ​−0.5​ 0.5 6
Step2247 [10]

A contraction would make the image smaller.


A negative number reflects the image and changes the size based on the number.


To make an image smaller the factor needs to be less than 1

so -0.5 and 0.5 would make the image smaller since 0.5 is less than 1.

7 0
3 years ago
Read 2 more answers
CONVERT THE PERCENTAGES FRACTION 130%​
Natasha2012 [34]

Answer:

13/10

Step-by-step explanation:

Its 13/10...

please give brainliest

4 0
2 years ago
Read 2 more answers
A) 7.7 ft<br> b) 13.4 ft<br> c) 10.3 ft<br> d) 12.3 ft
ELEN [110]

Answer:

D. 12.3 ft

Step-by-step explanation:

This problem requires the use of trigonometric ratios. This one specifically uses the cosine ratio as it provides the hypotenuse and is asking for the side that is adjacent to the angle.

cos(40°)=a/16

cos(40°)×16=a/16×16

cos(40°)×16=a

a=12.256 ft

The length of side a is D. 12.3 ft.

3 0
3 years ago
An 8-foot ladder is leaning against a wall. The top of the ladder is 5.5 feet from the ground.
Kobotan [32]

my guess would be c. but id wait for someone else to answer just to be sure

3 0
3 years ago
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