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3 years ago

What is the value of X?

Mathematics

2 answers:

11111nata11111 [884]3 years ago

7 0

Answer:

Step-by-step explanation:

You add 91 and 33 and you get 124. Subtract 180 and 124 to get 56.

katen-ka-za [31]3 years ago

3 0

56 because the 3 angles have to add up to 180. Please mark as brainliest. :)

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Solve the simultaneous equation 2x+4y=1 3x+5y=7b

Lyrx [107]

Step-by-step explanation:

3x+5y=7b equation 1
2x+4y=1

2x=-4y+1

x=(-4y+1)/2
x=(-4y+1)/2 in equation 1

3×(-4y+1)/2+5y=7b

(-12y+3)/2+5y=7b

(-12y+3+10y)/2=7b

(-12y+3)/2=7b

-12y+3=14b

-12y=14b-3

y=3-14b/12
y=3-14b/12 in x=(-4y+1)/2

x=(-4×{3-14b/12}+1)/2

x=(-3+14b)/3+1/2

x=14b/3×1/2

x=7b/3

8 0

3 years ago

Which expression is equivalent to (5x^3)(2x)^3

Elanso [62]

Answer:

$\large\boxed{(5x^3)(2x)^3=40x^6}$

Step-by-step explanation:

$(5x^3)(2x)^3\qquad\text{use}\ (ab)^n=a^nb^n\\\\(5x^3)(2^3x^3)=(5x^3)(8x^3)\qquad\text{use commutative law}\\\\=(5\cdot8)(x^3x^3)\qquad\text{use}\ a^na^m=a^{n+m}\\\\=40x^{3+3}=40x^6$

3 0

4 years ago

Read 2 more answers

What is 9x-5-8+x= what

Elanso [62]

Hi there!

First you simplify.

Simplified = 9x+(−5)+(−8)+x

Then you combine the like terms.

9x+(−5)+(−8)+x (*-5 and -8 are like terms) (9x and x are like terms)

Combined it's~ (9x+x)+(−5+−8)

Solve and that comes to 10x+−13 which is your answer. :)

Hope this helps.

3 0

3 years ago

Side AB of parallelogram ABCD has endpoints at (-1,6) and (6,9). What is the slope of the opposite side, CD?

Butoxors [25]

Answer:

3/7

Step-by-step explanation:

Opposite sides on a parallelogram are parallel, and parallel lines have the same slope, so once we find the slope of AB, we'll know the slope of CD. Point A is (-1,6) and point B is (6,9), so the slope of AB (and by extension, CD) is

$\dfrac{9-6}{6-(-1)}=\dfrac{3}{7}$