Please help me im in a rush

Mathematics

1 answer:

sertanlavr [38]2 years ago

4 0

Answer:

7.6

Step-by-step explanation:

mean = [weights] / amount of weights

m = 10 + 7 + 6 + 10 + 13 + 10 / 6

m = 46 / 6

m = 7.66666666 (recurring)

m = 7.6

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A rectangular plot of ground is 30 meters longer than it is wide it's area is 15000 square meters which equation will help me fi

navik [9.2K]

The plot: x meters wide and (x+30) meters long with an area of 15000 m^2. the equation you're searching for is:

x meters * (x+30) meters = 15000 m^2 or

x^2 + 30x m^2 = 15000 m^2 and

x^2 + 30x - 15000 = 0 <== that's the equation.

ans: x^2 + 30x - 15000 = 0

5 0

4 years ago

What is this answer.

Ronch [10]

Answer:

the third one

Step-by-step explanation:

3 0

4 years ago

Read 2 more answers

Graph the system of equations on graph paper.

masha68 [24]

4. The x-coordinate of the solution is 9.
5. The y-coordinate of the solution is −8 .
6.The ordered pair that is the solution to the system lies in Quadrant IV .

Proof:

Solve the following system:
{4 x + 3 y = 12 | (equation 1)
{2 x + 3 y = -6 | (equation 2)

Subtract 1/2 × (equation 1) from equation 2:
{4 x + 3 y = 12 | (equation 1)
{0 x+(3 y)/2 = -12 | (equation 2)

Multiply equation 2 by 2/3:
{4 x + 3 y = 12 | (equation 1)
{0 x+y = -8 | (equation 2)

Subtract 3 × (equation 2) from equation 1:
{4 x+0 y = 36 | (equation 1)
{0 x+y = -8 | (equation 2)

Divide equation 1 by 4:
{x+0 y = 9 | (equation 1)
{0 x+y = -8 | (equation 2)

Collect results:

Answer: {x = 9 , y = -8