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2 years ago

7

A candle is 6 inches tall and burns at a rate of 1/2 inch per hour. If the candle is now 3.5 inches, how many hours has it been

burning?

1 answer:

nikitadnepr [17]2 years ago

4 0

Scarlett Johnson Elizabeth Olsen

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What can be used as a reason in a two-column proof?

erik [133]

Two column proofs are organized into statement and reason columns. Each statement must be justified in the reason column. The reason column will typically include "given", vocabulary definitions, and theorems.

Therefore, w<span>hat can be used as a reason in a two-column proof are:

Postulates

Definitions</span>

8 0

3 years ago

Read 2 more answers

A quadrilateral has congruent diagonals. It is probably a( n) ______.

____ [38]

<span>A quadrilateral has congruent diagonals. It is probably a <u>Square</u></span>

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2 years ago

What are the zeros of the quadratic function f(x) = 2x2 – 10x – 3?

Natasha2012 [34]

Answer:

$x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}$ are zeroes of given quadratic equation.

Step-by-step explanation:

We have been a quadratic equation:

$2x^2-10x-3$

We need to find the zeroes of quadratic equation

We have a formula to find zeroes of a quadratic equation:

$x=\frac{b^2\pm\sqrt{D}}{2a}\text{where}D=\sqrt{b^2-4ac}$

General form of quadratic equation is $ax^2+bx+c$

On comparing general equation with b given equation we get

a=2,b=-10,c=-3

On substituting the values in formula we get

$D=\sqrt{(-10)^2-4(2)(-3)}$

$\Rightarrow D=\sqrt{100+24}=\sqrt{124}$

Now substituting D in $x=\frac{b^2\pm\sqrt{D}}{2a}$ we get

$x=\frac{(-10)^2\pm\sqrt{124}}{2\cdot 2}$

$x=\frac{100\pm\sqrt{124}}{4}$

$x=\frac{100\pm2\sqrt{31}}{4}$

$x=\frac{50\pm\sqrt{31}}{2}$

Therefore, $x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}$

5 0

2 years ago

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Is -(-3) = 3 . i know its simple but I need it

Inga [223]

Answer:

Yes

Step-by-step explanation:

$- ( - 3)$

$- 1 \div - 3$

$3$

<h3>Hope it is helpful....</h3>

8 0

2 years ago

Just need help with number 2 I will GUVE brainliest

FinnZ [79.3K]

The answer is a and d

7 0

2 years ago