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Masteriza [31]
3 years ago
10

Y = x2 - x - 7. what is axis of symmetry​

Mathematics
1 answer:
sertanlavr [38]3 years ago
4 0

Answer:

Step-by-step explanation:

To find the axis of symmetry, you use the equation opposite of <em>b</em>, divided by 2(<em>a</em>). Your <em>a </em>will always be the first number, your <em>b</em> your second, and <em>c</em> your third. So your equation would be positive <em>x</em>/2(x^2). I'll let you figure this out on your own.

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What is the factorization of the polynomial below
Leya [2.2K]

Hello from MrBillDoesMath!

Answer:  Choice B, 2(x+7)(x+7)

Discussion:

For 2 out of each term in the polynomial:

2x^2+28x+98 =

2( x^2 + 14x + 49).

Note the 14 = 7 + 7 and 49 = 7*7 sp the polynomial factors as

2 (x+7)^2

which is choice B.


Thank you,

MrB


7 0
3 years ago
Read 2 more answers
Solve the system of equations by elimination. Show all work neatly on your work page. Checking your answer is wise. :)
melamori03 [73]

Answer:

x=2

y=-8

Step-by-step explanation:

6x+3y=-12

-6x-2y=4

3y=-12-6x

y=(-12-6x)/3

y=-4-2x

substitute y

-6x-2(-4-2x)=4

-6x+8+4x=4

-2x=-4

x=2

6(2)+3y=-12

12+3y=-12

3y=-24

y=-8

check:

6(2)+3(-8)=-12

12-24=-12

-6(2)-2(-8)=4

-12=16=4

7 0
3 years ago
8) Jennifer has a collection of 1,600 coins. Of the coins, 40% are dated
Kitty [74]
<h3>Answer:  400  (choice A)</h3>

==============================================

Explanation:

40% + 35% = 75% of the coins were either made before 1940, or made from 1940 to 1980. In other words, 75% of the coins were minted before 1980. This leaves 100% - 75% = 25% of the coins to being minted after 1980.

25% of 1600 = 0.25*1600 = 400 coins were made after 1980

4 0
3 years ago
Please help!
ahrayia [7]

Answer:

the correct answer is (2,3)

Step-by-step explanation:

the point starts in the 4th quadrant, if youre moving counterclockwise, the new point would be in the 1st quadrant.

6 0
4 years ago
I need help in this exercise
grigory [225]

Answer:

your answer is 9   because 9x2=18

Step-by-step explanation:

pls tell me if i'm wrong i hate being wrong :c

4 0
4 years ago
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