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Alex Ar [27]
3 years ago
5

2x2 + 24x + 72 = 0 options: {−6} {−6,0} {−9,−6, 0} {−9,−4}

Mathematics
1 answer:
kodGreya [7K]3 years ago
7 0

Answer:

x = -6

Step-by-step explanation:

Solve for x over the real numbers:

2 x^2 + 24 x + 72 = 0

Divide both sides by 2:

x^2 + 12 x + 36 = 0

Write the left hand side as a square:

(x + 6)^2 = 0

Take the square root of both sides:

x + 6 = 0

Subtract 6 from both sides:

Answer:  x = -6

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Natali5045456 [20]

Answer:

9) 1/2 (or 1:2, or 50%, or .50, depending on how your teacher wants it.

10) 2/3 (or 2:3, or 66.6%, or 0.66)

Step-by-step explanation:

9) Here are the possibilities of the cards you could pick

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Since there are 6 possibilities and only 3 of them have one face card, the probability is 3/6, or 1/2.

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7 0
4 years ago
How do I write Domain and Range in inequality notation?
ArbitrLikvidat [17]

Answer:

Domain: (-infinity, infinity)    Range:  (-infinity, infinity)

Step-by-step explanation:

They are parabolas, therefore you can assume that they go on infinitely. To find range, you must look at your y values. Look for your lowest point. Because the line goes done forever, your beginning mark would be (-infinity.

To find the other part, you look at your positive y values. Look for the highest value. Because this goes on infinitely, the completed version of your notation would be (-infinity, infinity). Be sure to use the infinity symbol though, which looks like an 8 rotated 90 degrees.


To find domain, look at your x values. To begin, look at your left-most values, which would be the negative numbers. Because the line goes on forever to the left, your notation would be (-infinity. To find the other part of domain, look at your positive x values. Because this line goes on infinitely as well, the completed version of your notation would be (-infinity, infinity). Infinity is never bracketed, it is always in parenthesis.

8 0
3 years ago
Write an equation of the line in slope-intercept form that passes through ( -2, 5) and is parallel to y=4x.
Lisa [10]
Parallel= same slope
Y = 4x + b
Plug in the point
5 = 4(-2) + b
5 = -8 + b
b = 13
It would be D. Y= 4x+13
6 0
3 years ago
A new car worth $25,000 is depreciating (loses value) in value by $1,250 per year. Determine how many years will it take for the
Rudiy27
25,000 - 8,500 = 16,500

16,500 :1250 = 13 years and 2 months
6 0
3 years ago
A roll of recycled paper towels is shown below.
marta [7]
B) 6 ounces

not 100% sure though
3 0
3 years ago
Read 2 more answers
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