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3 years ago

Given the Quadratic, determine the value of the discriminant. 2x2 – 3x – 20 = 0

Mathematics

1 answer:

Andrews [41]3 years ago

4 0

2x2-3x-20=0
4-3x-20=0
2-20=-16
-3x-16=0
-3x=16
x= -5.33333
I think i did it right. i hope this helps.

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A book store sells a textbook for $150. If the textbook is on sale with 12% off, and there is a sales tax of 8.25% added to the

Yuri [45]

The textbook is $150 originally, so to find the price of the textbook on sale, multiply the original price by 12% (0.12). Then subtract 12% of 150 from 150.

150 * 0.12 = 18

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4 years ago

Solve. 8 – 3x – x = 12 <br> x =?

poizon [28]

You have to isolate x. First you start off by adding the like terms which is -3x and -x. By adding them you get -4x.

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Then you subtract 8 on both sides since it is positive to isolate x.
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3 years ago

Peony mixes red paint and white paint in the ratio 1:3 She uses four tins of red paint Work out the total number of tins of pain

blsea [12.9K]

Answer:

Step-by-step explanation:

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3 years ago

Graph the image of the figure after a dilation with a scale factor of 2 centered at (-7, - 2).

tigry1 [53]

Answer:

Sorry this is late!

Step-by-step explanation:

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3 years ago

Need help....... thx

Blababa [14]

I got 75582.

Explanation:

First, group the 40 identical candies into 20 pairs. It doesn't matter how since the candies are identical. This grouping will ensure that any assigment will contain at least two candies.

Then think of the 20 groups a 20 beads on a string. We are looking to place 11 separators between them to obtain 12 segments, each with a varying number of beads between them. How many ways are there to place 11 separators to 19 potential spaces between beads? The asnwer is $n = {19\choose{11}}=75582$

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3 years ago