Select all of the expressions that are equal to 6,

Mathematics

2 answers:

IgorC [24]3 years ago

8 0

Answer:

Step-by-step explanation:

$(6)=6\\\\(-6)=-6\neq6\\\\-(6)=-6\neq6\\\\-(-6)=6\\\\(0-6)=(-6)=-6\neq6\\\\(-2)\cdot(3)=-6\neq6$

romanna [79]3 years ago

7 0

<h2>Answer:</h2>

The expressions that are equal to 6 are:

(6) , -(-6)

<h2>Step-by-step explanation:</h2>

We are asked to find the expressions which are equal to 6.

(6)

We know that on opening the parentheses term if the sign before the parentheses is positive then the number remains the same.

but if the sign before the parentheses is negative then the number gets reversed.

Hence, the number is equal to 6.

(-6)

The number is equal to -6.

-(6)

The number is equal to -6.

-(-6)

The number is equal to 6.

(0-6)

The number is equal to -6.

(-2) · (3)

The number is equal to -6.

( We know that the multiplication of a negative and a positive number is always a negative number ).

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What is the length of line PS

stiks02 [169]

$PQ^2 = PR \times PS$

$(4x + 4)^2 = (3x + 3)(3x + 3 + 21)$

$16x^2 + 32x + 16= (3x + 3)(3x + 24)$

$16x^2 + 32x + 16= 9x^2 + 81x + 72$

$7x^2 - 49x- 56 = 0$

$7(x^2 - 7x - 8)= 0$

$(x - 8)(x + 1) = 0$

$x - 8 = 0~~~or~~~x + 1 = 0$

$x = 8~~~or~~~x = -1$

x = -1 makes the lengths of segments PQ and PR equal zero.
That is not possible, so the solution x = -1 is discarded.

x = 8

PS = 3x + 3 + 21

PS = 3x + 24

PS = 3(8) + 24

PS = 24 + 24

PS = 48

4 0

4 years ago

Who knows how to do this I TRULY NEED HELP

zavuch27 [327]

Answer:

x = 10

Step-by-step explanation:

It's given in the question that both the traingles JCD & JKL are similar. So their ratio of corresponding similar sides will be proportional to each other.

$= > \frac{JD}{JL} = \frac{JC}{JK} = \frac{DC}{LK}$