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kodGreya [7K]
2 years ago
9

· The solution set of a quadratic equation is{-1, 4). How many x-intercepts does the graph

Mathematics
1 answer:
Arlecino [84]2 years ago
8 0

Answer:

  • C. 2

Step-by-step explanation:

The solution set is {-1, 4}

<u>It means there are two solutions or two x-intercepts:</u>

  • (-1, 0) and (4, 0)

Correct choice is C

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What is the slip of the line shown in the graph A) -2 B) -1 C) 1/-2 or D) 1/2
Serjik [45]

Answer:

m = -1/2

Step-by-step explanation:

m=\frac{rise}{run}=\frac{1-2}{0+2}=\frac{-1}{2}=\boxed{-\frac{1}{2}}

Hope this helps.

6 0
3 years ago
Jonathon stated that 0.20 of his coins were quaters. What percentage of jonathons coins are quaters
Anastasy [175]
20%, because 20/100 is equal to 20&.
Hope this helps!
8 0
3 years ago
10) A rhombus has a<br> diagonal 8.6 mm long<br> and an area of 81.7 mm. what is the<br> perimeter?
BaLLatris [955]

Answer:

P=41.72

Step-by-step explanation:

S=ACxDB/2

81.7=8.6xDB/2

81.7=4.3xDB|:4.3

19(mm)=DB

DO=19/2=9.5

OC=8.6/2=4.3

(O is the center of the rhombus, where two diagonals meet)

a²+b²=c² (DO²+OC²=DC²)

9.5²+4.3²=c²

90.25+18,49=c²

√108,74=√c²

c≈10.43

P=4c

P=4x10.43

P=41.72

Hope it helps:)

6 0
2 years ago
To prove that the triangles are similar by the SAS similarity theorem, it needs to be shown that
vesna_86 [32]

Answer:

The triangle has two sides that are equivalent and the angle where the two meet are also equivalent.

In other words, two sides and the angle between them are congruent.

Hope this helps, if it does please give me brainliest, it will help me a lot :)

Have a good day

3 0
2 years ago
Assume that adults have IQ scores that are normally distributed with a mean of 101.3 and a standard deviation 19.9. Find the fir
AnnyKZ [126]

Answer:

87.9

Step-by-step explanation:

Use a calculator or table to find the z-score that corresponds to 25%.

P(Z < z) = 0.25

z = -0.675

Now find the value that corresponds to that z score.

z = (x − μ) / σ

-0.675 = (x − 101.3) / 19.9

x = 87.9

4 0
3 years ago
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