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julsineya [31]
3 years ago
12

What are the x-intercepts of the function f(x) = 2x^2 - 3x + 20?​

Mathematics
2 answers:
BARSIC [14]3 years ago
8 0

There are two: -4 and -5/2

Steps

0 = (2x - 5)(x + 4) | FOIL (distribution)

2x = 5 | zero product rule

x = 5/2 <<<

x = -4 <<< | zero product rule again.

8_murik_8 [283]3 years ago
7 0
There are two: -4 and -5/2
Steps

0 = (2x - 5)(x + 4) | FOIL (distribution)

2x = 5 | zero product rule
x = 5/2 <<<

x = -4 <<< | zero product rule again.
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Find the sum or difference<br><br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B5%7D%7B10%7D%20-%20%20%5Cfrac%7B3%7D%7B10%7D%20
Paraphin [41]

Answer:

0.2

Step-by-step explanation:

Or 2/10. is that right?

5 0
2 years ago
line j has an equation of y=-x+8. line k includes the point (1,-3) and is perpendicular to line j. what is the equation of line
In-s [12.5K]

Answer:

y = x - 4

Step-by-step explanation:

<u>Use point slope form:  (y - y1) = m(x - x1)</u>

m = 1

<u>Step 1:  Plug in</u>

(y - (-3)) = 1(x - 1)

y + 3 - 3 = x - 1 - 3

y = x - 4

Answer:  y = x - 4

8 0
2 years ago
After distributing, which equation is equivalent to -4(3x + 2) = 10a.-12x -8 = 10b.-12x + 8 = 10c.-12x -6 = 10d.-12x + 6 = 1
rodikova [14]

Answer:

Option A: -12x-8=10 is the correct answer.

Step-by-step explanation:

Given equation is:

-4 (3x+2) = 10

We will distribute the equation by multiplying the terms inside the brackets with -4.

Therefore,

-4*3x + 2*-4 = 10

-12x +(-8) = 10

-12x - 8 = 10

The equation -4 (3x+2) = 10 will become -12x-8=10 after distributing.

Hence,

Option A: -12x-8=10 is the correct answer.

5 0
3 years ago
During a sale, a dress is marked down from a selling price of $90 to a sale price $72 what is the percent markup
77julia77 [94]

Answer:

0.089

Step-by-step explanation

5 0
2 years ago
-4r &lt; 22<br><br> Can someone help with this inequality?
svp [43]
Lol u thought I was writing an answer hahahaha
8 0
3 years ago
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