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Fittoniya [83]
3 years ago
7

What is the discriminant of the equation below? X^2 - 8x - 2 = 0

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
4 0

Answer:

Step-by-step explanation:

b^2 - 4ac > 0

(-8)^2 - 4(1)(-2) = 64 + 8 = 72

two solutions

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The proportion of oil in a certain paint is 65%. The amount of oil in 30 oz of the paint is how much
Alexxx [7]
To find the amount of paint,we can set an equation.

Lets x be the amount of paint:

65%x = 30
x = 30 ÷ 65%
x = 30 ÷ 0.65
x = 46.1538...
x ≈ 46.154(corr. to 3 demical places)

Therefore the answer is 46.154 oz.

Hope it helps!
4 0
3 years ago
What is the quotient of 3.12 x 108 and 2.6 x 105 expressed in scientific notation?​
Gnoma [55]

Answer:

1.2 * 10^3

Step-by-step explanation:

3.12 * 10^8

=========

2.6 * 10^5

Start by doing 3.12 / 1.6 = 1.2 and that is the correct number of sig digs.

Now get the power on the 10. When dividing, the powers subtract.

10^(8 - 5)

10^ 3

The answer is 1.2 * 10^3

7 0
3 years ago
Think Through Math Lesson progress Pre-Quiz Warm Up Guided Learning Practice Post-Quiz Finish Welcome, CHARIS Student Avatar Und
Levart [38]

Answer:

Option D.

Step-by-step explanation:

Consider the given expressions are

14^2\times 12^2\times 12^1

14^2\times 12^3

14\times 14\times 12\times 12\times 12

14^1\times 14^1\times 12^2+12^1

On solving these expression we get

14^2\times 12^2\times 12^1=14\times 14\times 12\times 12\times 12=338688

14^2\times 12^3=14\times 14\times 12\times 12\times 12=338688

14\times 14\times 12\times 12\times 12=338688

14^1\times 14^1\times 12^2=14\times 14\times 12\times 12+12=28236

First three expressions are equivalent and fourth expression is not equivalent to others.

Therefore, the correct option is D.

7 0
4 years ago
Please help me thank you so much I appreciate it for the helping hand !!!!!
andreev551 [17]

Answer:x=7

Step-by-step explanation:

Steps down below. Remember that angles on a straight line add up to 180 degrees

3 0
3 years ago
Jennie is paid $10 an hour for regular time work and $20 an hour for overtime
lyudmila [28]

Answer:

Jennie earned $300

Step-by-step explanation:

We are already given the amount of time that she works and the rate. We just need to multiply the time by the corresponding rate. She worked 22 regular hours and gets $10 for each one. That means she earned $220 just from the regular hours.

Now we need to add the overtime hours. She worked 4 hours and made $20 for each one. In total, that's $80.

220+80=300

Jennie earned $300

8 0
4 years ago
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