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3 years ago

7

The Masons built a deck in their backyard. What is the area of the deck? (NO units)

1 answer:

ozzi3 years ago

4 0

Take the area of the rectangle as a whole and subtract the triangle piece.
We know the dimensions of the triangle are 3x4 so you can multiply it out using the formula to find the triangle's area to get 6.
Then you calculate the area of the whole rectangle. 10x12=120.
Finally subtract the triangle from the rectangle. 120-6=114.
The Area of the deck is 114.

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Solve the system of equations.<br>y= 2x + 4<br>y = x2 + x - 2

bezimeni [28]

Answer:

A.

Step-by-step explanation:

$y=2x+4$

$y=x^2+x-2$

Both equations are solved for y so I'm just going to substitute

the 1st y (the 2x+4) into the second equation's y.

$2x+4=x^2+x-2$

I'm going to get everything on one side so I have 0=ax^2+bx+c.

Subtract 2x and subtract 4 on both sides:

$0=x^2-x-6$

Since the coefficient of x^2 is 1, all we have to do is find two numbers that multiply to be -6 and add up to be -1.

These numbers are -3 and 2.

So the factored form of our equation is:

$0=(x-3)(x+2)$

This means we have x-3=0 or x+2=0.

x-3=0

Add 3 on both sides:

x=3

x+2=0

Subtract 2 on both sides:

x=-2

So now we need to find y. I'm going to choose to use the easier equation:

y=2x+4.

If x=3, then y=2(3)+4=6+4=10. The ordered pair (3,10) is a solution.

If x=-2, then y=2(-2)+4=-4+4=0. The orded pair (-2,0) is a solution.

3 0

4 years ago

You have 1,000,000 number cubes, each measuring one inch on a side. If you stacked the cubes on top of one another to make an en

MatroZZZ [7]

Number of cubes = 1,000,000

Side of each cube = 1 inch

The cubes are stacked on top of each other to make a tower

Height of the tower = Number of cubes × Side of each cube

⇒ Height of the tower = 1,000,000 × 1

⇒ Height of the tower = 1,000,000 inches

Hence, the tower is 1,000,000 inches high

6 0

4 years ago

Please help me, i dont understand

Kitty [74]

Answer:

OK so we can see that when x increases y does too. The answer is C

5 0

3 years ago

earnstyle [38]

Its like ones true then ones false it goes in that pattern

3 0

3 years ago

100 POINTS FOR BRAINLIEST! according to the image, whats the answer? Answer wisely for the full 100

stepan [7]

Answer:

Step-by-step explanation:

1. To find the area of a semicircle the formula is

$A=\frac{\pi r^2}{2} \\=\frac{\pi 1^2}{2} \\=6.283m^2$

The square

$A=a^2=2^2=4m^2\\6.283+4=10.283m^2$

2. Triangle

$A=\frac{ab}{2} \\=\frac{6*2.5}{2} \\=7.5m^2\\7.5*2=15m^2$

Rectangle

$A=wl=8*13=104m^2$

$104-15=89m^2$

3.

Semicircle

$A=\frac{\pi r^2}{2} \\=\frac{\pi 3^2}{2} \\\\=14.137m^2$

Square

$A=a^2=6^2=36$

$36-14.137=21.863m^2$

3 0

3 years ago

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