21-7y+3x-xy solve by factoring by grouping

Answer:

x = 50

Step-by-step explanation:

By the definition of vertical angles you can set these two equations equal to each other.

2x+20=3(x-10)

then, just simplify to get the correct answer by using order of operations.

2x+20=3x-30

x=50

Step-by-step explanation:

from,

f (x) = 2x-2+5

BUT x=-2

f (x) = 2 (-2)-2+5

= -4-2+5

= -6+5

= -1

so,

f (x) = -1

Answer:

0 I think

Step-by-step explanation:

0 solutions because 5x will cancer each other making de solutions undefined

Answer:

64

Step-by-step explanation:

Answer:5.6 I think

Step-by-step explanation:yea I just minus them and got that so

Answer:

y = 2x - 13

Step-by-step explanation:

Equation of a line is y = mx + c, m is the gradient and c is the intercept

The line passes through points 4 and -5, x is 4 and y is -5

-5 = 4m + c

When two lines are perpendicular, the products of their gradients are equal to -1, m1 * m2 = -1

x + 2y = 5

2y = -x + 5

y = (-1/2 * x) + 5

therefore m = -1/2

m1 * m2 = -1

m * -1/2 = -1

-m = -2 , therefore m = 2

-5 = 4 * 2 + c

c = -5 - 8, which is -13

Therefore the equation for the line is

y = 2x - 13

Answer:

X=85°....

Step-by-step explanation:

you do this by first acknowledging that in any triangle 180° will be present... so 40 + 45° equals 85°..this means that the other angle in the triangle will equal 95 degrees... now, in a line there's 180° present... that means 180 minus the 95 from the angle of c equals 85.

Answer:

i knew it but i forgot

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

Answer:

13

Step-by-step explanation:

156/12

y=3 and x= 5

Step-by-step explanation:

Answer:

200.131234

Step-by-step explanation:

Answer:

its 14 or 1/4 as you said     |     if it is not fractions and is whole numbers it is 1

Step-by-step explanation:

1/4 is the smallest value out of all of them, making it the least probable to happen

if they are not fractions, it is 1 because that is the smallest value, making it the least probable

hope this helped!

Answer:

Step-by-step explanation:its 1/4

Answer:

5 3/7

Step-by-step explanation:

Answer:

[tex]5\frac{3}{7}[/tex]

Step-by-step explanation:

Seven goes into 38 five times. Giving you 5 from 5×7=35.

I hope this explantion was helpful.

I solved it using my calculator but you can also solve the matrix by hand.

9514 1404 393

Explanation:

The decimal equivalent of a fraction will terminate if its denominator can be factored using only the prime numbers 2 and/or 5.

1/4 = 1/(2·2) will terminate

1/15 = 1/(3·5) will not terminate

Step-by-step explanation:

you cant add 1 to 5x, so subtract 1 on both sides leaving you with 1 + 5x < 4 that equals 5x < 3 -1 -1

then divide 5 from both sides 5x < 3 This leaves 5 5

you with x < 3/5

Answer:

I have no idea but thanks for point

Answer:

YASSS AMOUNG USSSSSS

Answer:

neither

Step-by-step explanation:

Answer:

The answer is y=75x, Erin can pick 75 apples per hour

Step-by-step explanation:

Normally you'd find two points and then use rise over run, but since there's an exact point (75) over 1 in the x plane, you don't need to simplify as it's already done for you

Answer:

4

Step-by-step explanation:

Answer:

either 4+ and -15 or 4 and -15

Step-by-step explanation:

Answer:

1 [tex]\frac{3}{4}[/tex]

Step-by-step explanation:

Answer:

L

Step-by-step explanation:

Answer:

20%

Step-by-step explanation:

you  take away the zeros and make it 16/20. 16/20=80%. 100%-80%=20%

Answer:

20%

Step-by-step explanation:

2000-1600=400

400/2000=1/5=20%

Answer:

A

Step-by-step explanation:

Answer:

1/5688x-18

I am not sure about my answer because I think the question is missing some information but my answer is 1/5688x-18. Thanks!

Answer:A

Step-by-step explanation:

The triangle ΔABC is rotated 180° about the origin, then the ΔA'B'C' is obtained.

A spatial transformation is each mapping of feature space to itself and it maintains some spatial correlation between figures.

Triangle ABC is congruent to Triangle A’B’C’.

ΔABC ≅ ΔA'B'C'

The triangle ΔABC is rotated 180° about the origin, then the ΔA'B'C' is obtained.

More about the transformation of a point link is given below.

https://brainly.com/question/27224339

#SPJ2

Answer:

(1, - 2)

Step-by-step explanation:

2x - y = 4

3x + y = 1

A = [tex]\left[\begin{array}{cc}2&-1\\3&1\end{array}\right][/tex] = 2(1) - 3( - 1) =2 + 3 = 5

[tex]A_{x}[/tex] = [tex]\left[\begin{array}{cc}4&-1\\1&1\end{array}\right][/tex] = 4(1) - 1(- 1) = 4 + 1 = 5

[tex]A_{y}[/tex] = [tex]\left[\begin{array}{cc}2&4\\3&1\end{array}\right][/tex] = 2(1) - 4(3) = 2 - 12 = - 10

x = [tex]\frac{A_{x} }{A}[/tex] = 1

y = [tex]\frac{A_{y} }{A}[/tex] = - 2

(1, - 2)

Answer:

9

Step-by-step explanation:

2(5y°) = 90° ⇒ y = 9

Answer:

here is what i think