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IceJOKER [234]
3 years ago
10

What do is the value of the discrimination quadratic equation 0=2x^2+x-3?

Mathematics
1 answer:
denis-greek [22]3 years ago
7 0
Hey there !

Given \: \: equation \: \: - \: \\ \\ 2 {x}^{2} + x - 3 = 0 \\ \\ D= {b}^{2} - 4ac = {1}^{2} - 4(2)( - 3) \\ \\ D= 25

Hope it helps you :)
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Please help i dont understand this at all
mylen [45]

Answer:

=a

Step-by-step explanation:

7 0
3 years ago
mr. stevens asked four students in his math class to find the least common multiple of 4 and 6. Grace answered 2, Lyra answered
Mazyrski [523]
The correct answer is 2 so Grace was the correct student
8 0
3 years ago
Solve for x: -41|x + 5| = -16
Vesnalui [34]

Answer:

6 I think. if not I'm sorry

4 0
2 years ago
It took Leo 3 hours to type a 4125-word essay. Sarah typed her 3800-word essay in 3 hours and 10 minutes. At these rates, how mu
scoray [572]

Answer:

Sarah would take 35 minutes longer than Leo to type 5500 word essay

Step-by-step explanation:

Let us solve the question

∵ It took Leo 3 hours to type a 4125-word essay

→ The rate is the number of words divided by the time

∴ Leo's rate = 4125 ÷ 3 = 1375 words/hour

∵ Sarah typed her 3800-word essay in 3 hours and 10 minutes

→ Change the 10 min to the hour by divide it by 60

∵ 3 hours 10 min = 3 + \frac{10}{60} = 3 + \frac{1}{6}  = 3\frac{1}{6} hours

∴ Sarah's rate = 3800 ÷ 3\frac{1}{6}  = 1200 words/hour

∵ Leo will type a 5500-word essay

→ Divide it by his rate to find the time taken

∴ Leo takes = 5500 ÷ 1375 = 4 hours

∵ Sarah will type a 5500-word essay

→ Divide it by her rate to find the time taken

∴ Sarah takes = 5500 ÷ 1200 = 4\frac{7}{12} hours

→ Find the difference between their times

∵ The difference = 4\frac{7}{12} - 4 = \frac{7}{12} hour

→ Multiply it by 60 to change to minutes

∴ The difference = \frac{7}{12} × 60 = 35 minutes

∴ Sarah would take 35 minutes longer than Leo to type 5500 word essay

3 0
2 years ago
Nadir saves $1 the first day of a month, $2 the second day, $4 the third day, and so on. He continues to double his savings each
zheka24 [161]

ANSWER

$16,384

EXPLANATION

From the question we have that,

Nadir saves $1 the first day of a month, $2 the second day, $4 the third day, and so on.

This forms a geometric sequence,

1,2,4,...

The first term of this sequence is

a = 1

The common ratio is

r =  \frac{2}{1}  =  \frac{4}{2}  = 2

The general term of a geometric sequence is given by the formula:

f(n) = a {r}^{n - 1}

To find the 15th term, we plug in a=1, r=2 and n=15.

f(15) = 1 {(2)}^{15 - 1}

f(15) =  {2}^{14}

f(15) = 16384

The amount he will save on the 15th day is $16,384

4 0
3 years ago
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