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Ivanshal [37]
3 years ago
11

Find the zeros of the function. f(x) = 2x2 – 2x – 12

Mathematics
2 answers:
kiruha [24]3 years ago
7 0
2(x^2-1x-6) = 0
2(x - 3)(x + 2)
x = 3, x = -2
Amiraneli [1.4K]3 years ago
3 0

Answer:

Step-by-step explanation:

2x^2-2x-12

This has solutions of x=3 and x= -2

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Dawn is ordering 1 veggie sandwich for every 3 ham sandwiches. She needs 12 sandwiches in all. Veggie sandwiches cost 4.00 dolla
NISA [10]

Answer:

$52.50

Step-by-step explanation:

Lets use V for Veggie, and H for Ham.

V=4

H=4.50

She is getting 12 sandwiches, and Every 3 H, she buys one V.

So, the order of her buying the sandwiches would be:

H H H V H H H V H H H V

9 H and 3 V

9*H=40.5

3*V=12

40.5+12= $52.50

5 0
2 years ago
I am trying to understand how to solve for X, then solve the equation
Alina [70]

Answer:

x = 16

m<Y = 34°

Step-by-step explanation:

∆XYZ is an isosceles ∆. An isosceles ∆ has two equal sides, as well as the bases of the isosceles triangle are congruent. In this case, therefore:

<X = <Z

(6x - 23)° = (4x + 9)

Solve for x

6x - 23 = 4x + 9

Collect like terms

6x - 4x = 23 + 9

2x = 32

Divide both sides by 2

x = 16

m<Y = 180° - (m<X + m<Z) (sum of ∆)

m<Y = 180 - ((6x - 23) + (4x + 9))

Plug in the value of x

m<Y = 180 - ((6(16) - 23) + (4(16) + 9))

m<Y = 180 - (73 + 73)

m<Y = 34°

5 0
3 years ago
A, B, and C are polynomials, where: A = 3x – 4 B = x + 7 C = x2 + 2 What is A2 – (B + C) in simplest form? 8x2 – 25x + 7 8x2– 25
Zina [86]
Hello,

Answer A

(3x-4)²-(x+7+x²+2)=9x²-24x+16-x-x²-9
=8x²-25x+7
7 0
2 years ago
Read 2 more answers
Which ones are the true statements?
Shalnov [3]

Answer:

Hi there! Sorry if my comment doesn't help you! I'm only here for the points! Thank you anyway!

Step-by-step explanation:

4 0
2 years ago
In the lab, Leila has two solutions that contain alcohol and is mixing them with each other. Solution A is alcohol and Solution
torisob [31]

Answer:

300ml

Step-by-step explanation:

As values are missing in your question, the complete question is:

In the lab, Leila has two solutions that contain alcohol and is mixing them with each other. Solution A is 6% alcohol and Solution B is 20% alcohol. She uses 400 milliliters of Solution A. How many milliliters of Solution B does she use, if the resulting mixture is a 12% alcohol solution?

Considering  x=ml of 20% solution B

Therefore, 400+x=ml of resulting 12% solution

Solution A alcohol+ solution B alcohol= Alcohol solution

6% (400)+ 20%x = 12%(400+x)    ->(converting percentage into decimal)

.06*400+.2x=.12(400+x)

24+.2x=48+.12x

.08x=24

x=24/.08=300 ml

she used 300 milliliters of 20%Solution B in resulting mixture.

4 0
3 years ago
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