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3 years ago

What is the quadratic equation that has roots of ,-3 And 2/5

Mathematics

1 answer:

prohojiy [21]3 years ago

6 0

Answer: 5x² + 13x - 6 = 0

Step-by-step explanation:

Represent the roots with X i.e.

X = -3 ; X = 2/5

Moving the values of X over the equator we have;

X + 3 = 0 ; 5X - 2 = 0

Equating both equations to zero we can obtain;

(X + 3)(5X - 2) = 0

Opening the brackets we get;

5x² - 2x + 15x - 6 = 0

The result of the above equation gives;

5x² + 13x - 6 = 0

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3 years ago

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a circled circumference is approximately 44cm

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Answer:

1. The circle’s radius is approximately 14 cm.

2. The circle’s radius is approximately 7 cm.

3. The circle’s area is approximately 154 cm2

Question:a circled circumference is approximately 44cm

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3 years ago

Tony bought 48 roses for $24. How much do 24 roses cost

kondor19780726 [428]

We know that:
48 roses costs $24
24 roses costs ?$
Step 1:
Use cross multiply
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Last step:
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4 years ago

What is the answer when you evaluate

Paha777 [63]

Answer:

The answer is 17

Step-by-step explanation:

To find the answer, we first have to put the values in for a and b.

√225 + ║2 - 3(1/3)(4)║

√225 + ║2 - 4║

√225 + ║-2║

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5 0

3 years ago

How many of the first million positive integers share no common factors greater than 1 with 2020

Bingel [31]

9514 1404 393

Answer:

396,040

Step-by-step explanation:

Factors of 2020 are 2, 5, 101.

There are 1,000,000 / 1010 = 990 multiples of 2 and 5 and 101.

There are 1,000,000 / 505 -990 = 990 multiples of 5 and 101 only.

There are 1,000,000 / 202 -990 = 3,960 multiples of 2 and 101 only.

There are 1,000,000 / 10 - 990 = 99,010 multiples of 2 and 5 only.

There are 1,000,000 / 101 -990 -990 -3960 = 3,960 multiples of 101 only.

There are 1,000,000 / 5 -990 -990 -99,010 = 99,010 multiples of 5 only.

There are 1,000,000 / 2 -990 -3960 -99,010 = 396,040 multiples of 2 only.

So, the total number of multiples of any factor of 2020 is ...

990 +990 +3960 +99,010 +3960 +99010 +396040 = 603960

Then the number of integers in the first million that do not share any common factors greater than 1 with 2020 is ...

1,000,000 -603,960 = 396,040

4 0

3 years ago

What is the quadratic equation that has roots of ,-3 And 2/5​

What is the quadratic equation that has roots of ,-3 And 2/5