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3 years ago

When would you write an x in an equation?)

Mathematics

1 answer:

mafiozo [28]3 years ago

4 0

Answer:

$\Large \boxed{\mathrm{When \ a \ number \ is \ not \ known}}$

Step-by-step explanation:

For example, a sum of a number and 6 is 12.

The number is unknown.

Let the number be x.

x + 6 = 12

We can solve for x (unknown number). Subtract 6 from both sides of the equation.

x = 6

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At his aunt's farm Benjamin sees a horse that 2 meters longs. Name two other things that are about 2 meters long.

Ivahew [28]

A door and pretty much anything that is 6.5 meters long.

6 0

4 years ago

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Which 2 values of x are roots of the polynomial below?

Alexxx [7]

Given:

The given polynomial is:

$f(x)=$ $3x^{2}-3x+1$

To find the roots of the given polynomial.

To find the roots we have to take $f(x) = 0$

So,

$3x^{2} -3x+1 = 0$

Formula

By quadratic formula, the root of the equation $ax^{2} +bx+c = 0$ is,

$x = \frac{-b+\sqrt{b^{2}-4ac } }{2a}$ and $\frac{-b-\sqrt{b^{2} -4ac} }{2a}$

Now,

Putting, $a=3, b=-3, c=1$ we get,

$x = \frac{3+\sqrt{3^{2}-4(3)(1) } }{(2)(3)}$ and $\frac{3-\sqrt{3^{2}-4(3)(1) } }{(2)(3)}$

$x = \frac{3+\sqrt{-3} }{6}$ and $x=\frac{3-\sqrt{-3} }{6}$

Hence,

The values of the roots of the given polynomial are $x=\frac{3+\sqrt{-3} }{6}$ and $x=\frac{3-\sqrt{-3} }{6}$

Hence, Option A and F are the correct answer.

5 0

3 years ago

A box contains 2 3/4

Juli2301 [7.4K]

Answer:

.55 or 11/20

Step-by-step explanation:

multiply 2 3/4 by 1/5 to get the pounds of apples Sage uses.

5 0

3 years ago

Help me please thank yiu

Citrus2011 [14]

Answer:

Step-by-step explanation:

I think it is C

5 0

3 years ago

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sally’s huge dog weighed 175 pounds in 2018 and then weighed 145 pounds in 2020 what is the rate of change and weight?

stiks02 [169]

Answer:17.14%

Step-by-step explanation:

145 x

_____=_____

175 100

145(100)=175(x)

14500=175x

__________

175 175

x=82.86

100-82.86=17.14%

7 0

3 years ago