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Luda [366]
3 years ago
14

4 bags of cement do 18 m² how many m^2 can be done with seven bags

Mathematics
1 answer:
lisov135 [29]3 years ago
7 0

Answer:

31.5 m^2

Step-by-step explanation:

To find the amount for 7 bags, create a proportion.

\frac{4}{18} =\frac{7}{y}

To solve for y, cross multiply numerator to denominator of each fraction.

4(y) = 18(7)

4y= 126

y= 31.5

7 bags will do 31.5 m^2

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erastova [34]
B C=0.1 and D=0.1
I think you ment c not b for the third one so I wrote the answer to
3 0
3 years ago
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Which equation represents a linear function?
KatRina [158]

Answer:

<h2>y - 5 = x - 20</h2>

Step-by-step explanation:

The equation of a linear function in

slope-intercept form: y=mx+b

point-slope form: y-y_1=m(x-x_1)

standard form: Ax+By=C

general form: Ax+By+C=0

1.

y(x - 1) = 9

xy - y = 9   NO

2.

y - 5 = x(-x + 2)

y - 5 = -x² + 2x    NO

3.

y(y - 1) = x + 25

y² - y = x + 25    NO

4.

y - 5 = x - 20

y - 5 = 1(x - 20)    YES   <em>(it's a point-slope form)</em>

5 0
3 years ago
50 points
aliya0001 [1]

<span>
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SquareWe will be doing TWO constructions of a square. The first will be to construct a square given the length of one side, and the other will be to construct a square inscribed in a circle.METHOD 1:Given: the length of one side of the square
Construct: a square
STEPS:

1. Using your straightedge, draw a reference line, if one is not provided.
2. Copy the side of the square onto the reference line, starting at a point labeled A'. 
3. Construct a perpendicular at point B' to the line through.
4. <span>Place your compass point at B', and copy the side of the square onto the perpendicular. Label the end of the segment copy as point C.</span>
5. With your compass still set at a span representing AB, place the compass point at C and swing an arc to the left. 
6. Holding this same span, place the compass point at A' and swing an arc intersecting with the previous arc. Label the point of intersection as D.
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8 0
4 years ago
PLEASE ANSWER ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
dybincka [34]
I would choose B but keep asking others.
8 0
3 years ago
Read 2 more answers
Let x = hours spent babysitting on Saturday. Choose the equation that
Ne4ueva [31]

The equation that can be used to represent the situation given that x is the number of hours spent babysitting is 4(x + 8) = 56

<h3>How to write and solve equation</h3>

  • Amount paid per hour for babysitting =$4
  • Total amount made = $56
  • Hours spent babysitting on Sunday = 8 hours

Total earned babysitting on Sunday = Hours spent babysitting on Sunday × Amount paid per hour

= 8 × 4

= $32

Number of hours he babysat on Saturday = $56 - (8 × 4) ÷ 4

= 56 - 32 ÷ 4

= 24 ÷ 4

= 6 hours

  • check all that applies

A. 8x+4 = 56

8x = 56 - 4

8x = 52

x = 52/8

x = 6.5

B. 4x+8 = 56

4x = 56 - 8

4x = 48

x = 48/4

x = 12

C. 8(x + 4) = 56

8x + 32 = 56

8x = 56 - 32

8x = 24

x = 24/8

x = 3

D. 4(x + 8) = 56

4x + 32 = 56

4x = 56 - 32

4x = 24

x = 24/4

x = 6

Learn more about equation:

brainly.com/question/16863577

6 0
3 years ago
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