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zavuch27 [327]
3 years ago
7

Need help working out

Mathematics
1 answer:
Andru [333]3 years ago
5 0
 5 * 1/2 - 8 ( 3/4 * 1/2 + 1/2 )
    5/2    -  8 (      3/8    + 1/2 ) 
      5/2   - 8  (         7/8 )
      5/2    -       56/8
               -36/8 = -9/2 
 A is the answer
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How can you describe the line that passes through (0,3) and (-1, 0)​
julia-pushkina [17]

let's find the equation of line passing through those two points.

slope of the given line :

  • \dfrac{y_2 - y_1}{x_2 - x_1}

  • \dfrac{3 - 0}{0 - ( - 1)}

  • \dfrac{3}{ 1}

  • 3

now, let's plug the value of slope (m)

and y - intercept (c) in general equation

of line in slope intercept form.

i.e y = mx + c

so, we get the equation of given line as :

  • y = 3x + 3
8 0
2 years ago
Geometry math question no Guessing and Please show work
Vera_Pavlovna [14]
IN ORDER TO FIND THE ANSWER:

Add up two of the values. If they are greater than the third, the lengths can make up a triangle.

3 + 9 = 12
12 > 14? No

3 + 5 = 8
8 > 7? Yes

1 + 2 = 3
3 > 3? No

4 + 4 = 8
8 > 8? No

The answer would be B.
5 0
3 years ago
The ratio of girls to boys in grade 6 was 3:2 at Lincoln middle school last year. There were 60 kids in grade 6. How many in gra
olasank [31]

Answer:

40 girls 20 boys i think / guess

Step-by-step explanation:

3 0
3 years ago
2 Select the correct answer. Consider functions f and g. Which statement gives the best approximation of the solutions of the eq
kaheart [24]
  • Answer: are c and d

Step-by-step explanation: I think not sure.

6 0
2 years ago
The length of a rectangle is four times its width. If the area of the rectangle is 324m^2, find its perimeter.
Anuta_ua [19.1K]

Answer:

perimeter=90

Step-by-step explanation:

We know that the length is four times the width, so:

l=4w

We also know the area, which is 324 m². The formula for area:

A=l*w

Insert the known values:

324=(4w)*w

Solve for w. Simplify by removing parentheses:

324=4w*w\\324=4w^2

Divide 4 from both sides to isolate the variable:

\frac{324}{4}=\frac{4w^2}{4}  \\\\81=w^2

Find the square root of both sides:

\sqrt{81} =\sqrt{w^2} \\\\w=9

The width is 9 m.

We know the width. Now find the length by using the area formula and inserting known values:

324=l*9

Solve for l. Divide both sides by 9:

\frac{324}{9}=\frac{l*9}{9}\\\\  l=36

The length of the rectangle is 36. (You can check: 4 times 9 is 36)

Now find the perimeter:

P=2l+2w

Insert values:

P=2(36)+2(9)\\\\P=72+18\\\\P=90

The perimeter is 90 m.

5 0
3 years ago
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