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stira [4]
3 years ago
8

What are the solutions to this quadratic equation? -2x^2 + x + 4 = 0

Mathematics
1 answer:
lyudmila [28]3 years ago
5 0

Answer:

the third one

Step-by-step explanation:

use quadratic equation

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What is 4/5 out of 60
CaHeK987 [17]
4/5 of 60 = 48.  4/5 = .80 Multiply .80 by 60 =48
8 0
3 years ago
Number 2 is the problem i need help with
Reptile [31]

Answer:

2a) $180

2b) $1440

Step-by-step explanation:

2a) Basically Samuel works for 6 hours a day and earns 7.50 per hour, so you have to do 7.50 x 6 to see how much he earns per day (which in this case is $45). You then have to multiply $45 to 4 since he earns $45 per day and works 4 days per week (which is $180).

2b) After finding out how much he earns per week ($180 from the previous question), you then have to multiply $180 by 8 as $180 is the amount he earns per week and since he works for 8 weeks you have to multiply $180 by 8 (the answer is then $1440).

sorry if I'm not making sense, i tried :) good luck!

8 0
3 years ago
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Graph x=−0.5. what would this look like on a graph
emmainna [20.7K]

It looks like a vertical line that intersects the x-axis at x=-0.5.

It's on the left side of the y-axis.

3 0
4 years ago
Read 2 more answers
X is at most 30 represent as an algebraic inequality
masya89 [10]

Answer:

x ≤ 30

Step-by-step explanation:

'at most' means the same as 'less than or equal to'.

The sign 'for less than or equal' to is ≤.

So it's simply x ≤ 30.

6 0
3 years ago
A bag contains 5 blue marbles, 6 red marbles, and 9 green marbles. Two marbles are drawn at random, one at a time. What is the p
Leokris [45]
Your answer would be C. 27/190.

This is because the probability of choosing green as the first marble would be 9/20, as there are 20 marbles in total and 9 of those are green.

The probability of choosing a red marble as the second marble would be 6/19, as no red marbles would have been lost if green was picked first, but there would be one less marble in total.

The 'and' rule for probability, the one that is used to determine the probability of P(A) and P(B), is to multiply, so we need to do 9/20 × 6/19 = 54/380 = 27/190.

I hope this helps!
7 0
4 years ago
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