Assume that the dimensions of the room in the plan are a (width ) by b (length),

such that a*b=30.

Since the scale is 1:100, a represents 100a, and b represents 100b.

So the actual dimensions are 100a by 100b.

The area is 100a*100b=a*b*10,000=30*10,000=300,000 (square units)

Answer: 300,000 (square units)

8 0

2 years ago

X² + 3x + k = 0 pls help

denis-greek [22]

Answer:

$\left(h,\:k\right)=\left(-\frac{3}{2},\:\frac{9}{4}\right),\:p=-\frac{1}{4}$

Step-by-step explanation:

$x^2+3x+y=0$

$4\left\bigg(-\frac{1}{4}\right)\left\bigg(y-\frac{9}{4}\right)=\left\bigg(x-\left\bigg(-\frac{3}{2}\right)\right)^2$

$\bold{\mathrm{Therefore\:parabola\:properties\:are:}}$

$\left(h,\:k\right)=\left(-\frac{3}{2},\:\frac{9}{4}\right),\:p=-\frac{1}{4}$

3 0

2 years ago

The scale for a model house is 1:12

guapka [62]

Answer:

here's what I got from wikipedia (i dont like taking of other's brain skills :/ )

Step-by-step explanation:

1:12 scale is a traditional scale (ratio) for models and miniatures, in which 12 units (such as inches or centimeters) on the original is represented by one unit on the model. Depending on application, the scale is also called one-inch scale (since 1 inch equals 1 foot)

hope this helps you :)

5 0

2 years ago

Read 2 more answers

Find the volume of the cone. Round your answer to the nearest tenth.

Sergeu [11.5K]

9514 1404 393

Answer:

115.5 cubic yards

Step-by-step explanation:

The volume is given by the formula ...\

V = 1/3πr²h

Here the diameter is 7 yards, so the radius is 3.5 yards. The volume is then ...

V = (1/3)π(3.5 yd)²(9 yd) = 36.75π yd³ ≈ 115.454 yd³

The volume of the cone is about 115.5 cubic yards.

3 0

2 years ago