MATHEMATICS MIDDLE SCHOOL

Which expression is equivalent to (-2)(a+6)?a.) -2a+6
b.) 2a+12

c.) -2a-12

d.) -2a+12

Answers

Answer 1
Answer: (-2)(a+6) =-2a -12 \n \n Answer : \ c.) -2a-12
Answer 2
Answer:

Answer:

c

Step-by-step explanation:

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Negative two and one-third minus negative ten and one-sixth.

Answers

47/6 or 7.833333333 or 7 5/6

Answer:

47/6 or

Step-by-step explanation:

Can I please get some help with problems (b) and (c)? I'm not sure how to figure it out. Diagram listed below.

Answers

Answer:

The slope of line r and s is (k-n)/(j-m).

Step-by-step explanation:

We are given the lines PQ and P'Q' represented by r and s.

The slope of a line having end points (x_(1),y_(1)) and (x_(2),y_{}) is given by (y_(2)-y_(1))/(x_(2)-x_(1)).

B. Slope of line r.

Since, the line r have end points ( m,n ) and ( j,k ).

Slope = (k-n)/(j-m).

C. Slope of line s.

Since, the line r have end points ( m,n+e ) and ( j,k+e ).

Slope = (k+e-(n+e))/(j-m)

i.e. Slope = (k+e-n-e)/(j-m)

i.e. Slope = (k-n)/(j-m)

Hence, the slope of line r and s is (k-n)/(j-m).

The midpoint of AB is M (2,0). If the coordinates of A are (7, -2), whatare the coordinates of B?

Answers

Answer:

The coordinates of point B are (-3,2)

Step-by-step explanation:

we know that

The formula to calculate the midpoint between two points is equal to

M((x_1+x_2)/(2),(y_1+y_2)/(2))

we have

M(2,0)\n(x_1,y_1)=(7,-2)

substitute

(2,0)=((7+x_2)/(2),(-2+y_2)/(2))

Find the value of x_2

we have that

2=(7+x2)/(2)

4=7+x_2\nx_2=-3

Find the value of y_2

we have that

0=(-2+y_2)/(2)

0=-2+y_2\ny_2=2

therefore

The coordinates of point B are (-3,2)

Right and solve an equation that can be used to find the width of the backyard that is 120 feet long and has a perimeter of 330 feet

Answers

The width of backyard is 45 feet.

Step-by-step explanation:

Given,

Length of backyard = 120 feet

Perimeter of backyard = 330 feet

Width of backyard = w

Perimeter = 2(Length + Width)

330=2(120+w)\n330=240+2w\n330-240=2w\n90=2w\n2w=90

Dividing both sides by 2

(2w)/(2)=(90)/(2)\nw=45

The width of backyard is 45 feet.

Keywords: perimeter, division

Learn more about perimeter at:

#LearnwithBrainly

1/2(4x-9)=2x+8A.
exactly one real solution,

B.
no real solutions
C.
infinite real solutions

D.
exactly one real solution,

Answers

Let us first try and solve this equation to see how many solutions are for this equation.

We need to have x on one side of the equation and everything on the opposite side of x.

1/2(4x - 9) = 2x + 8 ; Start
2x - 4.5 = 2x + 8     ; Distribute the 1/2 across 4x and -9
2x = 2x + 12.5        ; Add 4.5 to each side of the equation
0 = 12.5                  ; Subtract 2x from each side of the equation

As we can clearly see, this equation has 0 answers.

Casey likes to run she runs a quarter mile each day on the last day she ran 1 1/4 mile said she ran a half a mile her first day for how many days has she been running

Answers

4,    1/2 + 1/4 = 3/4 + 1/4 = 1 + 1/4 = 1 1/4
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