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notka56 [123]
3 years ago
6

I need help..........

Mathematics
1 answer:
Marat540 [252]3 years ago
5 0
Answer: 3rd one
Rearrange the original equation so it fits the model of : ax^2+bx+c=0
Then use the quadratic formula to find all possible answers.
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Without his pencil or calculator, Joey knows that 2x³+3x²− 1 = 0 has at least one real solution. How does he know?
vova2212 [387]

Answer: Find the discriminant

Check explanation

Step-by-step explanation:

b^2-4ac

if it is equal to 0 there is no solution

Greater then 0 there is 2 real solution

Less then 0 there is 1 real

3^2-4(2*-1)

9-4(-2)

9(8)

72 there is at least one real solution

6 0
3 years ago
A town has a population of 13000 and grows at 2.5% every year. What will be the population after 5 years, to the nearest whole n
vova2212 [387]

Answer:

The population will be 14708

Step-by-step explanation:

formula

A = P (1+r)^t

Initial population = P = 13000

Growth rate = r = 2.5% = 0.025

Number of years = t  = 5 years.

A = 13000 (1+.025)^5  = 14708

brainly.com/question/12498268

5 0
2 years ago
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Is the following shape a square? How do you know
DENIUS [597]
No, because all sides are not congruent. The answer is B.
5 0
3 years ago
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Two similar figures have sides in the ratio of 2:3. If a side of the smaller triangle has a length of 7, what is the length of t
dusya [7]
1) 7/2 = 3.5
2) 3.5 * 3 = 10.5
answer: 10.5 
4 0
3 years ago
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PLZ HELP AND DONT TELL ME UR OPINON I WANT HELP WITH THE ANSWER
Serhud [2]
It should be 132, area of parallelogram is same as rectangle actually, it just tilted a bit, so is 11 x 12
3 0
3 years ago
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