MATHEMATICS HIGH SCHOOL

How many solutions does the following equation have? -6(x+7)=-4x-2

Answers

Answer 1
Answer:

Answer:

one solution

x=-20

Answer 2
Answer:

Answer:

-20

Step-by-step explanation:

-6(x+7)=-4x - 2

-6x - 42 =-4x - 2

-6x +4x=-2+42

-2x=40

x=-40:2

x=-20

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Find the value of x.A.48B.56C.68D.76

6x - 5y= 70
7x + 2y=66

I need a answer in words step by step please help!!

Answers

Answer:

x = 10

y = -2

Step-by-step explanation:

Elimination method:

6x -  5y = 70 -----------------(I)

7x + 2y = 66 -----------------(II)

Multiply equation (I) by 2 and equation (II) by 5 and add. So, y will be eliminated and you can now find the value of x

(I)*2           12x - 10y  = 140

(II)*5          35x + 10y = 330     {Now add}

                 47x           = 470

                              x = 470/47

x = 10

Plugin x = 10 in equation (II)

7*10 + 2y = 66

70 + 2y = 66

Subtract 70 from both sides

2y = 66 - 70

2y = -4

Divide both sides by 2

y = -4/2

y = - 2
(10,-2) or x=10 , y=-2

The fourth-grade students at Harvest School make up 0.3 of all students at the school. What fraction is equivalent to 0.3?

Answers

The three is in the tenths place so the numerator is 3 and the denominater is 10 so the equivalent fraction would be 3/10

What is the value of the expression -3x^2y + 4x when x=-4 and y=2

Answers

Answer:-785

Step-by-step explanation:

There are 480 light bulbs to be packed in boxes of 8. If 20% are cracked, how many boxes are needed to pack the remaining bulbs? a) 48 boxes b) 52 boxes c) 60 boxes d) 56 boxes

Answers

Answer: 48 Boxes

Step-by-step explanation:

20% of 480 = 0.20 x 480 = 96 cracked  

480 - 96 = 384

384 ÷ 8 = 48 boxes

Isabelle has a five-sided chicken coop in her yard. Each side has an equal length. What is the total perimeter of the chicken coop if the length of one side is yards? Recall that the perimeter is the sum of all sides of a shape or boundary.

Answers

Answer:

P = 175 yards

Step-by-step explanation:

Isabelle has a five-sided chicken coop in her yard. The length of each side is equal.

Let the length of one side is 35 yards.

We need to find the total perimeter of the chicken coop.

Perimeter = sum of all sides of a shape or boundary

P = 35+35+35+35+35

P = 5(35)

P = 175 yards

So, the perimeter of the chicken coop is 175 yards.

Answer:

It is 15 then weird symbol thing, then five or B

Step-by-step explanation:

6. What is the slope of the line pictured?​

Answers

Answer:

-1/3

Step-by-step explanation:

We can do this by counting the number of spaces away the points shown are. Starting from the leftmost point, you move down one, or -1, units, and right 3 units. Since slope is defined as rise over run, you can then say that the slope is:

-1/3

Hope this helps!
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