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3 years ago

ILL BRAINLIEST YOU PLEASE HELP ME

Mathematics

2 answers:

ycow [4]3 years ago

6 0

Answer: 30.0 feet

Step-by-step explanation:

posledela3 years ago

5 0

Answer:

30.0 ft

Step-by-step explanation:

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A clock strikes 2:00.what time will their needles form a right angle?

raketka [301]

Answer:

Step-by-step explanation:

3 0

3 years ago

What is the slope of the line? y=54x−13π

Grace [21]

If the equation is in the form of y = mx + C, where m and C are real numbers, the slope (which means gradient) of the line is the coefficient of x (I.e. the number to the left of x in simple language), which is m.

In this case, m = 54 and C = -13pie. Both are real numbers, which means that this equation satisfies the form of y = mx + C

m is the coefficient of x, which is 54. 54 is the gradient of this line, which means that for every 54 y-axis units the line increases, the line increases 1 x-axis unit.

Hope this helps! :)

4 0

3 years ago

Find the total surface area of the following square pyramid: 6 cm 8 cm

Norma-Jean [14]

Answer:

Surface area of square pyramid = $160cm^{2}$

Step-by-step explanation:

Let, b is the length of the base and s is the slant height

According to given condition:

b = 8 cm

s = 6 cm

Find out:

Surface area of square pyramid = ?

Formula:

Surface area of square pyramid = $b^{2} + 2bs$

Solution:

Surface area of square pyramid = $b^{2} + 2bs$

Surface area of square pyramid = $8^{2} + 2(8)(6)$

Surface area of square pyramid = $(64+ 96 ) cm^{2}$

Surface area of square pyramid = $160cm^{2}$

8 0

3 years ago

(I don't udnerstand, please help w/ explination as well)

12345 [234]

Answer:

A) 15 hours

B) 108 hours

C) 2073.45 miles

Step-by-step explanation:

The earth rotates fully 1 time in 24 hours. Fully rotate means that it goes through 360 degrees in 24 hours.

For this, we can set up unit ratio to solve.

"If earth rotates 360 degrees in 24 hours, 225 degrees take how much time (let it be x)?"

$\frac{360}{24}=\frac{225}{x}\\360x=24*225\\360x=5400\\x=\frac{5400}{360}\\x=15$

So , it takes 15 hours.

Here, the rotation is given in radian, NOT degrees. We know that 2π radians is 360 degrees, thus we can say:

"If earth rotates 2π radians in 24 hours, 9π radians take how much time (let it be y)?"

$\frac{2\pi}{24}=\frac{9\pi}{y}\\2\pi y=9\pi * 24\\2\pi y = 216\pi\\y=\frac{216\pi}{2\pi}\\y=108$

So, it take 108 hours.

The point on the equator is on the "outside" of the earth. So we need to figure out the circumference of the earth, given diameter is approximately 7920.

Circumference formula is C = 2πr, where C is the circumference, r is the radius (half of diameter, which is 7920/2 = 3960)

Hence

C = 2πr = 2π(3960) = 7920π

Hence, is 24 hours, a point travels 7920π miles. 2 hours is 1/12th of 24 hours, so in 2 hours the point will travel 1/12th the distance is travels in 24 hours. So:

$\frac{7920\pi}{12}=2073.45$