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cupoosta [38]
3 years ago
14

Quadratic equation that contain the three ordered pairs (1,6), (3,26), (-2,21)

Mathematics
1 answer:
rosijanka [135]3 years ago
8 0
Y= 3x^2-2x+5

6= 3(1)^2-2(1)+5
6= 3-2+5
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The arch of a bridge forms the upper half of an ellipse. The arch is 6 meters above the 20-meter-wide river. Write an equation f
aksik [14]

Answer:

\frac{x^2}{36} + \frac{y^2}{100} = 1

Step-by-step explanation:

Required

The equation of the ellipse

This is calculated as:

\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1

Where:

b =6 ---- height

a = 0.5 * 20 =10 --- width

So:

\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1

\frac{x^2}{6^2} + \frac{y^2}{10^2} = 1

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3 0
2 years ago
Choose one of the factors of x^3 + 343.
Debora [2.8K]

First, note that 343=7^3. Then use the formula for the sum of perfect cubes:

a^3+b^3=(a+b)(a^2-ab+b^2).

Therefore,

x^3 + 343=x^3+7^3=(x+7)(x^2-7x+49).

The quadratic trinomial x^2-7x+49 couldn't be factored anymore, so the expression x^3 + 343 has two factors x+7 and x^2-7x+49.

Answer: correct choice is A.

3 0
3 years ago
How do you write 36/100 as a fraction in simplest form?
maks197457 [2]

Answer:

Step-by-step explanation:

8 0
2 years ago
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emmasim [6.3K]

Answer:

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3 years ago
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Akimi4 [234]

Answer:

Step-by-step explanation:

4x - 12 ≤ 16 + 8x

4x - 8x ≤ 16 + 12

- 4x ≤ 28

<em>x ≥ - 7 or [ - 7, ∞ )</em>

3 0
3 years ago
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