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Ne4ueva [31]
4 years ago
7

Determine the type and number of solutions of −4x2 − 3x + 7 = 0

Mathematics
1 answer:
Mrrafil [7]4 years ago
5 0
Since 3^2 - (-4)(7) must be bigger than 0

Then it has two real roots.
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Solve 5y^2+20=80, where y is the real number
soldi70 [24.7K]

Answer:

2√3

Step-by-step explanation:

5y2+20=80

Step 1: Subtract 20 from both sides.

5y^2+20−20=80−20

5y^2=60

Step 2: Divide both sides by 5.

5y^2 /5 = 60/5

y2=12

Step 3: Take square root.

y=√12

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3 years ago
Which point does NOT lie on the graph of the line x + 2y = 9?
Soloha48 [4]

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b (2, -1) is your answer for this question

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2 years ago
After two six-sided dice are rolled, what is the probability that the dice faces add up to either a 4 or 6?
Marizza181 [45]

Answer:

0.222

Step-by-step explanation:

out of 36 outcomes you have 8 possible outcomes for a '4' or '6':

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5,1

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6 0
3 years ago
Read 2 more answers
Simplify to create an equivalent expression. \qquad{-2(-5n+6)+5(2-7n)}−2(−5n+6)+5(2−7n)minus, 2, left parenthesis, minus, 5, n,
Usimov [2.4K]

Answer:

The equivalent expression is - 25n - 2 and it matches with option D.

Step-by-step explanation:

We have to simplify and create the equivalent expression for

{- 2(- 5n + 6) + 5(2 - 7n)}

Now, {- 2(- 5n + 6) + 5(2 - 7n)}

= 10n - 12 + 10 - 35n

= - 25n - 2

Therefore, the equivalent expression is - 25n - 2 and it matches with option D. (Answer)

5 0
3 years ago
Read 2 more answers
*PLEASE ANSWER ASAP*
DochEvi [55]

1. (-6, -6)  (-2, -4) (-2, -6)

Write under each set (+6)

2. F" (-6, 0)  G" (-2, 2)  H" (-2,0)

3 0
3 years ago
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