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Licemer1 [7]
3 years ago
12

The area of a rectangle is 99 square units. Its width measures 11 units. Find the length

Mathematics
1 answer:
Elis [28]3 years ago
6 0

Answer:

14.2

Step-by-step explanation:

11L=99

11 99

L=9

9^2 +11^2=c^2

81+121=c^2

sq root 202

14.212670

14.2=c

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Step-by-step ex$ in 6 in 14 dt lenght times width times hight planation:

3 0
3 years ago
Simplify and evaluate without a calculator. 3*(m-4)-n*(m-4) if m=5 and n=3
Katarina [22]

Answer:

0

Step-by-step explanation:

3*(m-4)-n*(m-4)   m = 5, n = 3

3*(5-4)-3*(5-4)

3*(1)-3*(1)

3-3

0

6 0
2 years ago
Read 2 more answers
Mr Diaz decreased the speed of his car by 30 miles per hour over a period of 10 seconds. What is the average change in the speed
Allisa [31]
Divide 30 by 10. 30mph/10seconds = 3mph/seconds
4 0
3 years ago
Which of the following best describes the solution to the system of equations below?
OverLord2011 [107]

Answer: OPTION A

Step-by-step explanation:

The equation of the line in slope-intercept form is:

y=mx+b

Where m is the slope and b the y-intercept.

Solve for y from each equation:

\left \{ {{5y=-4x+7} \atop {10y=-8x+14}} \right.\\\\\left \{ {{y=\frac{-4}{5}x+\frac{7}{5}} \atop {y=\frac{-8}{10}x+\frac{14}{10}}} \right.\\\\\left \{ {{y=\frac{-4}{5}x+\frac{7}{5}} \atop {y=\frac{-4}{5}x+\frac{7}{5}}} \right.

As you can see the slope and the y-intercept of each equation are equal, this means that both are the exact same line. Therefore, you can conclude that the system has infinitely many solutions.

3 0
3 years ago
Suppose x=7 is a solution to the equation 4x-2(x+a)=8 how can you find the value of a that make the equation true
marta [7]

Answer:

a = 3

Step-by-step explanation:

Since x = 7 is a solution, substitute x = 7 into the equation and solve for a

4(7) - 2(7 + a) = 8 , that is

28 - 2(7 + a) = 8 ( subtract 28 from both sides )

- 2(7 + a) = - 20 ( divide both sides by - 2 )

7 + a = 10 ( subtract 7 from both sides )

a = 3

8 0
2 years ago
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