All categories

2 years ago

7 + 7x - (2x) + 3 if x = -4

Mathematics

2 answers:

frutty [35]2 years ago

4 0

Answer:

-10

Step-by-step explanation:

7 + 7(-4) - (2(-4)) + 3

7 - 28 - (-8)+3

7 - 28 +8 +3

= -10

Mekhanik [1.2K]2 years ago

4 0

Answer:

- 10

Step-by-step explanation:

7 + 7x - (2x) + 3 =
7 + 7x - 2x + 3 =
10 + 5x =
10 + 5*(- 4) = Substitute x = - 4
10 - 20 =
- 10

You might be interested in

Help???????????????????

neonofarm [45]

I believe the answer you selected was correct, Have a great day, much love!

6 0

3 years ago

The pentagon shown could be reflected over which line to be carried onto itself?

Svetach [21]

Answer:

paraell

Step-by-step explanation:

3 0

3 years ago

Given an=−6+(n−1)(23) a n = - 6 + ( n - 1 ) ( 2 3 ) what would the constant rate of change be?

KiRa [710]

23 is the constant rate of change..............

4 0

3 years ago

Prove that the following four points will form a rectangle when connected in order

Lemur [1.5K]

Answer:

Step-by-step explanation:

If the diagonals of the rectangle are congruent,

AC = BD

By using formula to calculate the distance between two points,

Distance between two points = $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Distance between A(0, -3) and C(2, 8),

AC = $\sqrt{(8+3)^2+(2-0)^2}$

= $\sqrt{125}$

= $5\sqrt{5}$

Similarly, distance between two points B(-4, 0) and D(6, 5),

BD = $\sqrt{(5-0)^2+(6+4)^2}$

= $\sqrt{125}$

= $5\sqrt{5}$

Therefore, both the diagonals are congruent.

Hence, given quadrilateral ABCD is a rectangle.

8 0

3 years ago

PLEASE HELP! WILL NAME BRAINLIEST!!

lbvjy [14]

Answer:

Y = 60 degrees and X = 12

Step-by-step explanation:

x+3 and 15 are congruent so x+3 = 15, 12+3 = 15 therefore x = 12

y = 60 vertically opposite angles are equal. :D

3 0

3 years ago

Read 2 more answers