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3 years ago

What is x equal to in the following equation:

Mathematics

1 answer:

sveta [45]3 years ago

7 0

Answer:

3^4

Step-by-step explanation:

X = 4 or C

because, 3 x 3 x 3 x 3 = 81

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Which type of triangle, if any, can be formed with sides measuring 8 inches, 8 inches, and 3

Tju [1.3M]

Answer:

An isosceles triangle

Step-by-step explanation:

An isosceles triangle has two equal sides.

4 0

3 years ago

the contrapositive of the following statement is true: if two angles are both right, then they are congruent. True or false

Alona [7]

False, because right angles are always going to be 90` while congruent angles are 110`

7 0

4 years ago

I NEED HELP PLS THIS IS DUE IN 3 HOURS

Mariulka [41]

Answer:

Part 1) $x^{2} -2x-2=(x-1-\sqrt{3})(x-1+\sqrt{3})$

Part 2) $x^{2} -6x+4=(x-3-\sqrt{5})(x-3+\sqrt{5})$

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

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

Part 1)

in this problem we have

$x^{2} -2x-2=0$

$a=1\\b=-2\\c=-2$

substitute in the formula

$x=\frac{-(-2)(+/-)\sqrt{-2^{2}-4(1)(-2)}} {2(1)}\\\\x=\frac{2(+/-)\sqrt{12}} {2}\\\\x=\frac{2(+/-)2\sqrt{3}} {2}\\\\x_1=\frac{2(+)2\sqrt{3}} {2}=1+\sqrt{3}\\\\x_2=\frac{2(-)2\sqrt{3}} {2}=1-\sqrt{3}$

therefore

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

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

Part 2)

in this problem we have

$x^{2} -6x+4=0$

$a=1\\b=-6\\c=4$

substitute in the formula

$x=\frac{-(-6)(+/-)\sqrt{-6^{2}-4(1)(4)}} {2(1)}$

$x=\frac{6(+/-)\sqrt{20}} {2}$

$x=\frac{6(+/-)2\sqrt{5}} {2}$

$x_1=\frac{6(+)2\sqrt{5}}{2}=3+\sqrt{5}$

$x_2=\frac{6(-)2\sqrt{5}}{2}=3-\sqrt{5}$

therefore

$x^{2} -6x+4=(x-(3+\sqrt{5}))(x-(3-\sqrt{5}))$

$x^{2} -6x+4=(x-3-\sqrt{5})(x-3+\sqrt{5})$

5 0

3 years ago

Write the ratio two fifths<br> to 8 as a fraction in simplest form.<br><br> PLEASE HELP

charle [14.2K]

Answer:

the answer is b on oddesseyware

Step-by-step explanation:

7 0

4 years ago

Natalle is a softball coach. She has a pitching private lesson with Kasey. Kasey's mom pays Natalle $11 per hour plus a $6 tip.

kirill [66]

$11t\text{ + 6 = 39}$

where t is the number of hours worked by Natalle

Here, we want to write an equation that will represent the given scenario

Let the number of hours for which she earned the pay be t

From the question, she earns $11 per hour

So for t hours, the amount earned excluding the tip will be;

$(11\times t)\text{ = \$11t}$

Now, let us add the tip and equate to the total amount earned

We have this as;

$11t\text{ + 6 = 39}$

3 0

1 year ago