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DedPeter [7]
2 years ago
13

Distributive Method (2x+3)(x

Mathematics
1 answer:
Ann [662]2 years ago
5 0

Answer

(2x + 3)=x+7

2x+3=x+7

2x-x=7-3

1x=4

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Use the discriminant to determine which graph could represent the equation. y=x^2+4x+5
lidiya [134]
ANSWER

See attachment.

EXPLANATION

The given function is

y = {x}^{2} + 4x + 5

When we compare this function to

y = a{x}^{2} + bx + c

We have a=1, b=4 and c=5

We put this inside the formula for the discriminant, which is

D = {b}^{2} - 4ac

D = {4}^{2} - 4(1)(5)

D = 16 - 20 = - 4

Since the discriminant is negative, the function has no x-intercepts.

The graph of this function is the one hanging in the air above the x-axis and opens upwards.

5 0
3 years ago
What prefix would you use if you wanted an answer that would be equal to 100 times larger than a meter?
just olya [345]
Well, this could be a "hecto" but in practice it's not really used. If you want to use it, you would speak of "hectometers".

if your question would be 1000 times larger, then it would be "kilo" and this one is actually widely used.


6 0
3 years ago
You use 4 gallons of water on 30 plants in your garden. At that rate, how much water will it take to water 45 plants?
lisabon 2012 [21]
6 gallons since the gallons of water is divided by too since the initial value added 1/2 so the number of gallons is divided by too and added to the original amount of gallons so i believe your answer will be 6 gallons
4 0
2 years ago
Read 2 more answers
Is 10 a factor, multiple, or neither of 20?
goblinko [34]
10 is a factor of 20
5 0
3 years ago
5(2x - 3) + 2 (3x + 1)
astraxan [27]
     <span> 1/3(2x - 3) + 1 = 1/4(3x + 5) - 2
2x/3 - 3/3 + 1 = 3x/4 + 5/4 - 2
2x/3 - 1 + 1 = 3x/4 + 5/4 - 2
2x/3 - 3x/4 - 0 = 3x/4 - 3x/4 + 5/4 - 2
2x*4/3*4 - 3x*3/4*3 = 0 + 5*1/4*1 - 2*4/1*4
8x/12 - 9x/12 = 5/4 - 8/4
(8x - 9x)/12 = (5 - 8)/4
-x/12 = -3/4
-x/12 * 12 = -3/4 * 12
-x = -36/4
-x * -1 = -36/4 * -1
x = 36/4
x = 9
Done

For check the answer
let x = 9
1/3(2[9] - 3) + 1 = 1/4(3[9] + 5) - 2
1/3(18 - 3) + 1 = 1/4(27 + 5) - 2
1/3(15) + 1 = 1/4(32) - 2
15/3 + 1 = 32/4 - 2
15/3 + 3/3 = 32/4 - 8/4
18/3 = 24/4
6 = 6
therefor
x = 9 is a correct answer</span>
6 0
3 years ago
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