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Setler [38]
3 years ago
14

Explain why x^2 = -81 does not have a solution.

Mathematics
1 answer:
Evgesh-ka [11]3 years ago
6 0

Remember, the graph of a line represents every point that is a possible solution for the equation of that line. So when the graphs of two equations cross, the point of intersection lies on both lines, meaning that it is a possible solution for both equations. When the graphs of two equations never touch, there are no shared points and there are no possible solutions for the system. When the graphs of two equations lie on top of one another, they share all their points and every one is a possible solution.

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marie has $625 in a personal bank account, and then withdraws $14 per week. alex has $19 in a personal bank account, and then de
Margaret [11]

Answer:

You can use Unit rate to find the answer. (Divide)

Step-by-step explanation:

4 0
3 years ago
The cost of a car rental is ​$30 per day plus per mile. You are on a daily budget of ​$75. Write and solve an inequality to find
lora16 [44]

Answer:

2. 5 miles

Step-by-step explanation:

Given that:

Rental cost = $30

Cost per mile driven = 18 cent

Daily budget = $75

Greatest distance you can drive each day while staying within budget :

Rental cost + (cost per mile driven * distance) ≤ daily budget

$30 + 18d ≤ $75

18d ≤ 75 - 30

18d ≤ 45

d ≤ 45 / 18

d ≤ 2.5

Greatest distance you can drive each day while staying within budget is 2.5 miles.

Step-by-step explanation:

8 0
3 years ago
Mario painted 2/6 of the wall in his bedroom. Mei Lyn painted 2/4 of a wall in her bedroom.
Lesechka [4]
Well I am assuming you want to compare them or something so yeah:

You have to find a common denominator of 4 & 6, so you could multiply them together, this makes 24. Because you have to do the same thing to the top and the bottom, you have to multiply 2/4 (which is now 2/24) by 6, and the 2/6 (which again is 2/24) by 4 which leaves you with 12/24 (2/4) and 8/24 (2/6).

We can simplify these fractions by dividing them, but as you may know 12 is half of 24 so 12/24 would also be 1/2.
If you keep dividing by 2 you will find that 8/24 is also equal to 1/3. This is easier to find out by the beginning number but I mentioned it anyway because I didn't understand what you were asking.

Overall if you noticed when comparing 2/4 and 2/6 we found that Mei Lyn painted more wall than Mario.
4 0
4 years ago
What is the least common multiple (LCM) of 6 and 10?<br> OA. 2.<br> OB. 20<br> O C. 30<br> OD. 60
Naily [24]

Answer:

30

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
The Daily News reported that 54% of people surveyed said that they would vote for Larry Salva for mayor. Based on the survey res
bezimeni [28]

Answer:

12,690 people are expected to vote for Mr Salva

Step-by-step explanation:

Here, we want to know the number of people that is expected to vote for a particular candidate in an election given that 54% of people surveyed had said they would vote for the candidate.

Now to calculate the number of people expected to vote for Mr Salva, what we need to do is to find the number out of 23,000 that actually represents a percentage of 54%

To do this, we find 54% of 23,500

mathematically, we have;

54/100 * 23,500

= 12,690

8 0
3 years ago
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