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Alex17521 [72]
2 years ago
7

Solve Linear Equations with Rational Numbers

Mathematics
1 answer:
german2 years ago
5 0

Answer:

3/2

1x = 12

Step-by-step explanation:

See attachment

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For trapezoid ABCD, E and F are midpoints of the legs. Let GH be the median of ABFE. Find GH.​
Whitepunk [10]

Answer:

Option 4 : 19

Step-by-step explanation:

For trapezoid ABCD : AB = 16 and CD = 28

E and F are midpoints of the legs

So, EF = (AB + CD)/2 = (16+28)/2 = 44/2 = 22

GH be the median of ABFE

So, GH = (AB + EF)/2 = (16+22)/2 = 38/2 = 19

5 0
2 years ago
Tim and his sister chloe are both saving money to buy cell new phones. The Graph shows the amount of money in each acc based on
Arte-miy333 [17]

Answer:

a. The equation for the line representing Tim's account is y = 10·x + 40

b. The equation for the line representing Chloe's account is y = 20·x + 10

c. The solution to the system of equations is x = 3, y = 70

Step-by-step explanation:

a. The y-intercept of the graph for Tim's account = (0, 40)

A second point on the line graph of Tim's account = (3, 70)

The slope, m of a straight line equation, given two points on the line, (x₁, y₁), (x₂, y₂) is given as follows;

Slope, \, m =\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}

Therefore, the slope, m = (70 - 40)/(3 - 0) = 10

The equation for the line representing Tim's account in slope and intercept form is y = 10·x + 40

b. The y-intercept of the graph for Chloe's account = (0, 10)

A second point on the line graph of Chloe's account is also = (3, 70)

Therefore, the slope of the equation representing Chloe's account, m is given as follows;

m = (70 - 10)/(3 - 0) = 20

The equation for the line representing Chloe's account in slope and intercept form is y = 20·x + 10

c. The solution is found at the point where the two lines meet (are equal) as follows;

For Tim's account y = 10·x + 40

For Chloe's account y = 20·x + 10

Equating both equations gives;

y = y and 10·x + 40 = 20·x + 10

From which we have;

40 - 10 = 20·x - 10·x = 10·x

30 = 10·x

x = 30/10 = 3

x = 3

Therefore, haven found the x-coordinate value, the y-coordinate of the point which is the solution (where the two equations are equal or the two line graphs cross) of the two equations is given as follows;

y = 10·x + 40 where, x = 3, we have;

y = 10 × 3 + 40 = 70

y = 70

The point of the solution of the system of equations is (3, 70)

The solution to the system of equations is x = 3, y = 70.

3 0
2 years ago
The radius of a cylindrical construction pipe is 3.5 ft. If the pipe is 37 ft long, what is its volume?
Crazy boy [7]

Answer:

10651.7 gallons

Step-by-step explanation:

5 0
3 years ago
Question 17: Please help. Which information about the coordinates of G and H will prove that GH⎯⎯⎯⎯⎯⎯⎯⎯⎯ is a midsegment of △DEF
Thepotemich [5.8K]

Answer:

i think its the first option

4 0
3 years ago
Read 2 more answers
7y-(9+4y)= -3<br> y=?<br> Rest in peace 999
jeka57 [31]

Answer:

y = 2

Step-by-step explanation:

Given

7y - (9 + 4y) = - 3 ← distribute parenthesis by - 1

7y - 9 - 4y = - 3 , that is

3y - 9 = - 3 ( add 9 to both sides )

3y = 6 ( divide both sides by 3 )

y = 2

5 0
2 years ago
Read 2 more answers
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