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3 years ago

4x - 2y =7 X +2y =3 What is x and y ??

Mathematics

1 answer:

NARA [144]3 years ago

7 0

Answer:

x=2. y=1/2

Step-by-step explanation:

4x-2y=7. Equation 1

x+2y=3. Equation 2

Add the two equations

(4x+x) +(-2y+2y) =7+3

5x+0=10

5x=10 divide both sides by 5

X=2

Substitute x=2 in equation 2

2+2y=3

2y=3-2

2y=1. Divide both side by 2

Y=1/2

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In 20 years,

Aleksandr-060686 [28]

Answer:

Step-by-step explanation:

i honesty dont know if so i would help

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3 years ago

Jason is painting a large circle on one wall of his new apartment. The largest distance across the circle will be 8 feet. Approx

Hunter-Best [27]

Answer:

a) 50.24 ft²

b) 150.72 ft²

Step-by-step explanation:

Jason is painting a large circle on one wall of his new apartment. The largest distance across the circle will be 8 feet.

The distance across a circle is also called a diameter, Hence,

D = Diameter = 8 ft

The Area of a circle = πr²

r = Diameter/2 = 8ft/2 = 4ft

π = 3.14

Hence,

The Area of the circle = π × (4 ft)²

= 50.24 ft²

a) Approximately the amount of wall the circle will cover is 50.24 ft².

b) How much area will he cover if he painted a circle on three walls?

This is calculated as:

1 wall = 50.24 ft²

3 walls = x

Cross Multiply

x = 3 × 50.24 ft²

x = 150.72 ft²

7 0

3 years ago

What is 1/6x=4 in solving equations with rational coefficients

Debora [2.8K]

To solve an equation with a rational (fraction) coefficient you need to multiply both sides of the equation by the reciprocal (invert the fraction - flip it).

$\frac{1}{6}x =4$ The reciprocal of 1/6 is 6/1 or 6
$6( \frac{1}{6} x)= 6(4)$ The product of reciprocals equals 1
1x = 24
x = 24

7 0

3 years ago

Thomas earned $38.25 for cleaning the garage. Hewas paid $4.25 per hour. How many hours did it take him to clean the garage? a.

aleksandrvk [35]

Step-by-step explanation:

$38.25/$4.25 ×1hr

9hrs

8 0

2 years ago

PLEASE HELP!! PLEASE SHOW WORK OR EXPLAIN!! I WILL GIVE BRAINLIEST!!

Jet001 [13]

Answer:

-4

Step-by-step explanation:

The equation for slope is as follows:

We can use point P and point V's coordinates to find the slope.

Point P is at (2,4)

Point V is at (3,0)

Let's define all the variables:

y2 = 0 (from point V)

y1 = 4 (from point P)

x2 = 3 (from point V)

x1 = 2 (from point P)

Now that we have all the variables we can plug it into the equation:

$\frac{0-4}{3-2} = \frac{-4}{1} = -4$

Therefore, the slope of line PV is -4.

<em>I hope this helps!!</em>

<em>Feel free to ask any questions!</em>

8 0

2 years ago