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DochEvi [55]
3 years ago
6

Show all work. What are the zeros of the function? f(x) = 2x^2 − 8x − 10

Mathematics
1 answer:
vivado [14]3 years ago
3 0
(2x² - 8x - 10) ÷ 2 = 0
x² - 4x - 5 = 0
x² + x - 5x - 5 = 0
x(x+1) - 5(x+1) = 0
(x+1)(x-5) = 0
x+1 = 0 or x-5 = 0
x = -1 or x= 5

S = {-1;5}

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Oksi-84 [34.3K]
1 (8/9) = 1.88888888
3 (11/12) = 3<span><span>.9166666667 </span>

</span>
3<span>.91666 / </span>1.8888 =  <span> <span> <span> 2.0735294118 </span> </span> </span>

So, she can make 2 batches of cupcakes.


8 0
3 years ago
2^4<br> 2^3<br> 2^2<br> 2^1<br> what pattern do you notice?
Scorpion4ik [409]

Answer:

Really? The pattern is that this is probably influenced by is a negative exponential function. The pattern is that the exponent is decreased by one.

Step-by-step explanation:

5 0
3 years ago
Simplify the following expression.<br><br><br> A. <br><br> B. <br><br> C. <br><br> D.
Dahasolnce [82]

Answer:

D

Step-by-step explanation:

Let's start by crossing everything out!

12/3 can be crossed out to 4.

a^3/a^2 can be crossed out to a.

b^6/b^4 can be crossed out into b^2.

c^5/c^5 is just 1.

So which the results we got, we can multiply them, so that it is 4ab^2.

4ab^2 is our final answer!

5 0
2 years ago
Solve the system by substitution.<br> y = -3x +4<br> y = 2
erma4kov [3.2K]

Answer:

(2/3,2)

Step-by-step explanation:

3*2/3+4

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5 0
3 years ago
PLEASE HELP ASAP!!!
EleoNora [17]
<span>Part 1:

(x+1)^2-3(x+2) \\  \\ =x^2+2x+1-3x-6 \\  \\ =x^2-x-5

option b.


Part 2:
(5x^3y^{-3})(-6x^4y)\\ \\=5(-6)x^{3+4}y^{-3+1}\\ \\=-30x^7y^{-2}\\ \\=\frac{-30x^7}{y^2}

option d


Part 3:
\frac{8+x}{2} - \frac{x+3}{3} =4

Multiply through by the LCM of 2 and 3 (i.e. 6)
6\left(\frac{8+x}{2}\right) - 6\left(\frac{x+3}{3}\right) =6(4) \\  \\ 3(8+x)-2(x+3)=24 \\  \\ 24+3x-2x-6=24 \\  \\ x+18=24 \\  \\ x=24-18=6

option b


Part 4
x^2-3x-8=x+4

x^2-3x-8=x+4 \\  \\ x^2-3x-x-8-4=0 \\  \\ x^2-4x-12=0 \\  \\ (x-6)(x+2)=0 \\  \\ x=6 \ or \ -2

option d


Part 5
Joseph is solving the equation x^2+8x-4=0 using the technique completing the square.
x^2+8x-4=0
x^2+8x+?=4+?

In completeing the square method, you divide the coeficient of x by 2, square the result and add to both sides of the equation.

Therefore, he should add 16 to both sides because (8/2)^2=16.

option d.
</span>
5 0
3 years ago
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