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3 years ago

50 Points!

Mathematics

1 answer:

koban [17]3 years ago

7 0

Answer:

The exact height of the actual building is 822.5 feet.

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Use Exponential Functions

allsm [11]

Answer:

B. Yes; the domain values are at regular intervals and the range values have a common factor 4.

Step-by-step explanation:

I calculated it logically

3 0

3 years ago

A decorative window is made up of a rectangle with semicircles at either end. The ratio of AD to AB is 3:2 and AB is 30 inches.

scZoUnD [109]

Answer: The required ratio will be

$84:1034$

Step-by-step explanation:

Since we have given that

Ratio of AD to AB is 3:2

Length of AB = 30 inches

So, it becomes

$2x=30\\\\x=\frac{30}{2}=15\ inches$

So, Length of AD becomes

$3x=3\times 15=45\ inches$

Now, at either end , there is a semicircle.

Radius of semicircle along AB is given by

$\frac{30}{2}=15\ inches$

So, Area of semicircle along AB and CD is given by

$2\times \frac{\pi r^2}{2}\\\\=\frac{22}{7}\times 15\times 15\\\\=\frac{4950}{7}\ in^2$

Radius of semicircle along AD is given by

$\frac{45}{2}=22.5\ inches$

Area of semicircle along AD and BC is given by

$2\times \frac{1}{2}\pi r^2\\\\=\frac{22}{7}\times \frac{45}{2}\times \frac{45}{2}\\\\=\frac{445500}{28}\ in^2$

And the combined area of the semicircles is given by

$\frac{4950}{7}+\frac{445500}{28}\\\\=\frac{465300}{28}\ in^2$

Area of rectangle is given by

$Length\times width\\\\=AD\times AB\\\\=45\times 30\\\\=1350\ in^2$

Hence, Ratio of the area of the rectangle to the combined area of the semicircles is given by

$1350:\frac{465300}{28}\\\\=1350\times 28:465300\\\\=37800:465300\\\\=84:1034$

Hence, the required ratio will be

$84:1034$

8 0

3 years ago

Please help marked brainliest if correct.

solmaris [256]

Answer: Michael is 72.

hope this helps

Step-by-step explanation:

Let Brandon be b. Then Michael is 3g.

3g-18=9(b-18)

3g-18=9g-162

6g=144

b=24

3g=72

5 0

3 years ago

Lines k and l are parallel. When lines k and l are cut by the transversals below, an isosceles triangle is formed.

Slav-nsk [51]

The angle to the left of angle 1 is 70, so angle 1 is equal to 180 - 70 - 70 which is 40,

5 0

3 years ago

Read 2 more answers

Which one is greater 3/10 or 2/5

Andreyy89

Answer:

2/5

Step-by-step explanation:

2/5=4/10

4 0

3 years ago

Read 2 more answers