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mihalych1998 [28]
3 years ago
12

The graphs of four quadratic equations are shown. Identify the number of real solutions of each equation by

Mathematics
1 answer:
labwork [276]3 years ago
3 0

Answer:

1. 2 real solutions

2. no real solutions

3. 2 real solutions

4. 1 real solution

Step-by-step explanation:

The 'solution' to a quadratic equation means the x - intercepts of a graph, so how many times the parabola crosses the x-axis.

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PLEASE HELP<br> will mark brainliest<br> 10 points
Korolek [52]

Answer:

a and b

Step-by-step explanation:

their side lengths are similar in length

the side length for b are 2 times larger than a

but their angles are the same

angels dont change regardless of length size

4 0
3 years ago
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If pqr= 1 show that 1/(1+p+q^-1)+1/(1+q+r^-1)+1/(1+r+p^-1) = 1.<br>​
mariarad [96]

Answer:

1

Step-by-step explanation:

1/(1+p+q^-1)+1/(1+q+r^-1)+1/(1+r+p^-1) = 1.

7 0
3 years ago
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The scale on the architectural plans for a new house is 1 in. equals 4 ft. Find the length and width (in ft) of a room that meas
Kobotan [32]

Answer:

length:24 ft and Width:36 ft

Step-by-step explanation:

multiply 4 and 6 to get the length then multiply 4 and 9 to get the width

5 0
3 years ago
The measure of central angle XYZ is 1.25 radians. What is the area of the shaded sector?
galben [10]
A sector is the area bounded by two radii and the included arc.
To calculate for the area of the sector, you’ll use the formula A=n/360(pi)(radius)^{2}.
The n in the formula refers to the measure of the central angle in degrees.
The given data in the problem is in radians, convert it by multiplying 1.25 by \frac{180}{ \pi }.
Now input the converted value to the formula of finding the area of the sector.<span> 

</span>
3 0
3 years ago
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A shuttle launch depends on three key devices that may fail independently of each other with probabilities 0.01, 0.02, and 0.02,
worty [1.4K]

Answer:

0.950796

Step-by-step explanation:

Given that a shuttle launch depends on three key devices that may fail independently of each other with probabilities 0.01, 0.02, and 0.02, respectively.

Required probability =  the probability for the shuttle to be launched on time

= Probability that all three do not fail

Since each key device is independent of the other

we have

prob that all three do not fail = (1-0.01)(1-0.02)(1-0.02)\\=0.99*0.98*0.98\\=0.950796

6 0
3 years ago
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