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wlad13 [49]
3 years ago
5

X^2-3x-28=0 what are the roots

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
8 0

Answer:

\large\boxed{x=-4\ \vee\ x=7}

Step-by-step explanation:

x^2-3x-28=0\\\\x^2+4x-7x-28=0\\\\x(x+4)-7(x+4)=0\\\\(x+4)(x-7)=0\iff x+4=0\ \vee\ x-7=0\\\\x+4=0\qquad\text{subtract 4 from both sides}\\x=-4\\\\x-7=0\qquad\text{add 7 to both sides}\\x=7

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Answer: No, she does not have enough.

Step-by-step explanation:

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2. Therefore, you must add the measures given in the problem to know if Marie has enough ribbon to decorate the gift box. Then:

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Zina [86]

The ratio for Rowan = <u>4:1</u>.

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Ratios are fractions in the simplest form representing the relationship between two quantities.

The ratio of purple to white flowers for each friend can be shown as:-

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Thus, the fraction of purple to white flowers = 10/2 = 5/1.

Thus, the ratio for Jillian = 5:1.

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Thus, the fraction of purple to white flowers = 18/3 = 6/1.

Thus, the ratio for Lulua = 6:1.

The smallest ratio among these for purple to white flowers is for Rowan, that is, <u>4:1</u>.

Learn more about ratios at

brainly.com/question/3989414

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