Answer:
C. Use a straightedge to draw a diameter of the circle.
Step-by-step explanation:
I got it right on the test.
Answer:
x=3,y=6
Step-by-step explanation:
2x−y=0
3x−2y=−3
In order to solve by elimination, coefficients of one of the variables must be the same in both equations so that the variable will cancel out when one equation is subtracted from the other.
2x−y=0,3x−2y=−3
To make 2x and 3x equal, multiply all terms on each side of the first equation by 3 and all terms on each side of the second by 2.
3×2x+3(−1)y=0,2×3x+2(−2)y=2(−3)
Simplify.
6x−3y=0,6x−4y=−6
Subtract 6x−4y=−6 from 6x−3y=0 by subtracting like terms on each side of the equal sign.
6x−6x−3y+4y=6
Add 6x to −6x. Terms 6x and −6x cancel out, leaving an equation with only one variable that can be solved.
−3y+4y=6
Add −3y to 4y.
y=6
Substitute 6 for y in 3x−2y=−3. Because the resulting equation contains only one variable, you can solve for x directly.
3x−2×6=−3
Multiply −2 times 6.
3x−12=−3
Add 12 to both sides of the equation.
3x=9
Divide both sides by 3.
x=3
The system is now solved.
x=3,y=6
The material needed to make 1 kite is 144 square inches and for 3 kites she need 432 square inches of the material.
Step-by-step explanation:
Diagonals of the kite = 16 inches and 18 inches
Area of the kite = (16 x 18) /2
= 144 square inches
Area of 3 kites = 3 x 144
= 432 square inches.
The material needed to make 1 kite is 144 square inches and for 3 kites she need 432 square inches of the material.
Answer:
The area of that bedroom in real life is of 216 square feet.
Step-by-step explanation:
Real dimensions:
One of the bedrooms on the blueprint is a rectangle measuring 3 inches by 4.5 inches.
The scale is that each inch on the drawing represents 4 feet in real measure.
So the dimensions of the bedroom are:
3*4 = 12 feet by 4.5*4 = 18 feet.
What is the area of that bedroom in real life?
Rectangular bedroom, so the area is the multiplication of the dimensions.
12*18 = 216 square feet.
The area of that bedroom in real life is of 216 square feet.