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4 years ago

9

While visiting a friend's home, I saw kittens and chickens playing in the backyard. Counting heads, I got 18. Counting feet, I g

ot 50. How many kittens and how many chickens were in the backyard?

1 answer:

andrew11 [14]4 years ago

5 0

Answer:

11

Step-by-step explanation:

The 25 pairs of feet were 7 more than the number of heads, so there were 7 kittens. Hence there were 18-7 = 11 chickens.

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24. A flat roof rises at a 30° angle from the front wall of a storage shed to the back wall. The front wall is

katovenus [111]

Answer:

Length of the roof line is $17.4\ feet$ . And depth of the shed is $15.07\ feet$

Step-by-step explanation:

Given front wall is 11.5 feet tall, back wall is 20.2 feet. And roof rises at 30° angle from the front wall.

Let $h$ be the length of the roof line. And $b$ the depth of the shed.

We can see it is a right angle triangle with opposite $20.2-11.5=8.7\ feet$ (see the attachment)

Now,

$sin(30)=\frac{Opposite}{Hypotenuse}\\ \\sin(30)=\frac{8.7}{h}\\\\h=\frac{8.7}{0.5}\\\\h=17.4\ feet$

Also,

$tan(30)=\frac{Opposite}{Adjacent}\\\\tan(30)=\frac{8.7}{b}\\\\b=\frac{8.7}{tan(30)}\\\\b=\frac{8.7}{0.577}\\\\b=15.07\ feet$

So, Length of the roof line is $17.4\ feet$ . And depth of the shed is $15.07\ feet$

3 0

3 years ago

Read 2 more answers

A dermatology patient is treated with ultraviolet light having a wavelength of 375 nm. What is the wavelength expressed in centi

sergeinik [125]

1 nanometer = 1 * 10^9 meters

so 1 nanometer = 1 * 10^7 centimeters

375 nanometers = 3,75 * 10^5 centimeters

4 0

3 years ago

Read 2 more answers

28-9X=-12-11X<br><br> How would you answer that?

jolli1 [7]

$28-9x=-12-11x \\\\ -9x+11x=-12-28 \\\\ 2x=-40 \\\\ \boxed{x=-\frac{40}{2}=-20}$

4 0

3 years ago

Pls helppp !!!!!!!!

Solnce55 [7]

Answer:

the answer is 37 because 8 add 8 is 16 and so you would add the price of 8 shorts twice

4 0

3 years ago

Compute using significant digits. What is the area of a parallelogram with length 17.25 mm and width 5.065 mm?

Dmitriy789 [7]

Answer: Option 'a' is correct

Step-by-step explanation:

Since we have given that

Length of parallelogram =17.25 mm

Width of parallelogram =5.065 mm

As we know the formula for " Area of parallelogram"

Area of parallelogram is given by

$Area= length \times breadth\\\\17.25\times 5.065=87.03 \ mm^2$

Hence, option 'a' is correct .

8 0

3 years ago