3 years ago

Who would you solve 8x+-2y-10

1 answer:

8 0

Okay, for this one I would use elimination:

8x+(-2y)-10
or
8x-2y=10
2x=4y
x=2y
8(2y)-2y=10
16y-2y=10
14y=10
y=5/7
x=10/7 or 1 3/7. Hope it help!

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shirley purchased a plot of land for $19,500. the land appreciates about 3.9% each year. what is the value of the land after 5 y

romanna [79]

Answer:

$23,302.50

Step-by-step explanation:

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3 years ago

Find the perimeter of the quadrilateral that has vertices at (8,13), (5,-18), (-6,-6), and (-2,-5).

kodGreya [7K]

Answer:

72.14 units

Step-by-step explanation:

Let A(8,13), B(5,-18),C(-6,-6) and D(-2,-5)

Apply the distance formula as;

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Finding the lengths of the segments

For AB

$AB=\sqrt{(5-8)^2+(-18-13)^2} =\sqrt{(-3^2)+(-31^2)} =\sqrt{970} =31.14$

For BC

$BC=\sqrt{(-6-5)^2+(-6--18)^2} =\sqrt{(-11^2)+12^2} =\sqrt{265} =16.28$

For CD

$CD=\sqrt{(-2--6)^2+(-5--6)^2} =\sqrt{4^2+1^2} =\sqrt{16+1} =\sqrt{17} =4.12$

For DA

$DA=\sqrt{(8--2)^2+(13--5)^2} =\sqrt{10^2+18^2} =\sqrt{424} =20.6$

Finding the perimeter will be;

31.14+16.28+4.12+20.6=72.14 units

3 0

2 years ago

6. Craig and James both live 4 miles up a hill. Craig hikes uphill at a rate of 1 mile every two hours.

Iteru [2.4K]

Answer:

James

Step-by-step explanation:

James rate:

2x + 2 = 4

2x = 2

x = 1 hour

Rate = distance/time = 4/1 = 4 miles per hour

Craig's rate = 1/2 = 0.5 miles per hour

James is faster

6 0

2 years ago

4qu, when q= 5 and u = 7

professor190 [17]

Answer:

140

Step-by-step explanation:

Substitute q = 5 and u = 7 into the expression

4qu

= 4 × 5 × 7 = 20 × 7 = 140

4 0

2 years ago

Read 2 more answers

HELP!!!!!!!! For readers who cant see it says " A rectangular play area is 8 yards long. The expression 56+8x represents the are

ale4655 [162]

Answer:

the X represents the width, since to get the area, you have to multiply length times width

Hope that helps!

4 0

2 years ago