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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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Look at the picture below
Lelu [443]

Answer: Phillip is correct. The triangles are <u>not </u>congruent.

How do we know this? Because triangle ABC has the 15 inch side between the two angles 50 and 60 degrees. The other triangle must have the same set up (just with different letters XYZ). This isn't the case. The 15 inch side for triangle XYZ is between the 50 and 70 degree angle.

This mismatch means we cannot use the "S" in the ASA or AAS simply because we don't have a proper corresponding pair of sides. If we knew AB, BC, XZ or YZ, then we might be able to use ASA or AAS.

At this point, there isn't enough information. So that means John and Mary are incorrect, leaving Phillip to be correct by default.

Note: Phillip may be wrong and the triangles could be congruent, but again, we don't have enough info. If there was an answer choice simply saying "there isn't enough info to say either if the triangles are congruent or not", then this would be the best answer. Unfortunately, it looks like this answer is missing. So what I bolded above is the next best thing.

7 0
3 years ago
Read 2 more answers
ITS URGENT
Vinvika [58]

log.8 (.4096) =4

.8 ^4 = .4096



loga b =c

a^c =b

8 0
3 years ago
Johnson family took a trip in July. The son wanted to calculate the gas mileage in miles per gallon for his Nissan truck. When h
Nitella [24]

Step-by-step explanation:

Given data

initial mileage=24,033 miles.

cost to fill tank=$83.38

cost per gallon= $3.79

1. capacity of tank=83.38/3.79=22 gallons

remianing gas= 1/4*22= 5.5gal

gas used= 22-5.5= 16.5gal

new mileage= 24,297 miles.

mile covered= 24,297 miles.-24,033 miles.

=264miles

miles per gallon is =264/16.5

=16miles per gallon

8 0
3 years ago
For the complex number z = 12 + i, what is Modifying above z with bar?
RoseWind [281]

Answer:

its A (12-i)

Step-by-step explanation:

got it right on edge 2020

5 0
3 years ago
Can you please help me with this worksheet (this is due tomorrow)
Flauer [41]
Jennifer
1. 6
2.26
3.42
4.82

erika
1.7 (erika wrong)
2.15 (right)
3.23 (right)
4.43 (right)



6a. 6 is the right one
2(6+2)-7=9
8 0
3 years ago
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