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2 years ago

Why do you think a quadratic always becomes a positive number?

Mathematics

1 answer:

Alenkasestr [34]2 years ago

7 0

Answer:

Step-by-step explanation:

If a and (b - c^9/a) are both positive or both negatives, the quadratic will be either, always positive or negative.they are not both then, quadratic will be be positive for some values and negative for others.

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Which are the roots of the quadratic function f(b) = 62 – 75? Select two options.

elena55 [62]

Answer:

$b = 5 \sqrt{3} \ or\ b = -5 \sqrt{3}$

Step-by-step explanation:

Given

$f(b) = b^2 - 75$

Required

Determine the roots

To get the root of the function, then f(b) must be 0;

i.e. f(b) = 0

So, the expression becomes

$0 = b^2 - 75$

Add 75 to both sides

$75 + 0 = b^2 - 75 + 75$

$75 = b^2$

Take square roots of both sides

$\sqrt{75} = \sqrt{b^2}$

$\sqrt{75} = b$

Reorder

$b = \sqrt{75}$

Expand 75 as a product of 25 and 3

$b = \sqrt{25*3}$

Split the expression

$b = \sqrt{25} *\sqrt{3}$

$b = \±5 *\sqrt{3}$

$b = \±5 \sqrt{3}$

$b = 5 \sqrt{3} \ or\ b = -5 \sqrt{3}$

The options are not clear enough; however the roots of the equation are $b = 5 \sqrt{3} \ or\ b = -5 \sqrt{3}$

4 0

3 years ago

6x1/4= ? (fractions)<br><br> 3x2/3 = ?

son4ous [18]

6x1/4=6/4=2/3
3x2/3=6/3=2

4 0

2 years ago

Read 2 more answers

Please answer this correctly

cluponka [151]

Answer:

2:30pm

Step-by-step explanation:

7 0

3 years ago

What is an equation for a circle with a center at (-2,3) and a radius of 3

neonofarm [45]

Answer:

(x+2)² + (y–3)² = 3²

Step-by-step explanation:

just use the standard formula

3 0

3 years ago

Se uma pessoa comprar um aparelho eletrônico em 5 prestações mensais de 304,00 quanto pagará por esse aparelho ?

kobusy [5.1K]

Answer:

1520

Step-by-step explanation:

Pela pergunta acima, sabemos que:

1 parcela mensal = 304

5 parcelas mensais = x

Multiplicação cruzada

x = 5 prestações mensais × 304/1 prestações mensais

= 1520

Portanto, o valor que ele pagou pelo dispositivo é 1520

6 0

2 years ago