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aksik [14]
3 years ago
14

Can you plz help me with number 2

Mathematics
2 answers:
Kruka [31]3 years ago
8 0

Answer:

the height is 20

Step-by-step explanation:

you should set a equation first:

12/15=x/25

and then cross multiply

to get x=20

LenaWriter [7]3 years ago
8 0

Answer:

20 feet tall

Step-by-step explanation:

Let's say the height of the taller road sign=x. To solve for x, set the height and length of the signs equal to one another:

\frac{height}{length} =\frac{height}{length}

Plug the numbers in:

\frac{12 ft}{15 ft} =\frac{x}{25 ft}

Cross-multiply to get 300 = 15x, then divide both sides by 15 to isolate x.

x = 20 feet

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Find the height of a square pyramid that has a volume of 75 cubic feet and a base length of 5 feet.
Rudiy27

Answer:

9 ft

Step-by-step explanation:

Let's begin with the formula for the volume of a square pyramid.  If s is the base length, then the area of the base is s^2.  The volume of the pyramid is then V = (1/3)(base area)(height).  We know the volume and the base length (s), and want to find the height.  Solving V = (1/3)(base area)(height)

for height, we get:

3V = (base area)(height), or

    3V

---------------- = height

base area

Substituting 75 ft^3 for V and (5 ft)^2 for base area, we get:

               3(75 ft^3)              9 ft

height = ------------------ = ----------------- = 9 ft

                 25 ft^2                   1

3 0
3 years ago
A banner is in the shape of a rectangle. It is 15 feet long and 12 feet wide. What is the perimeter?
Effectus [21]

Here....

The length is given 15 feet and the width is 12 feet...Now let's find the Perimeter..

  • The formula to calculate Perimeter of rectangle is 2 ( l + b )

Perimeter = 2 ( l + b )

= 2 ( 15 + 12 )

= 2 × 27

= 54 feet

...

:)...

3 0
2 years ago
Cole got $100 for his birthday. he can either save the money or buy a tennis racket with it what is the opportunity cost if he b
Andrew [12]

Answer:

A. winning games with his new racket

Step-by-step explanation: It's A because he's going to spend the money anyways every kid can't hope but, to spend their money $100 is a lot. He wouldn't be worried about losing out on savings because you get birthday money every year there is always a Opportunity for more cash.


If I'm wrong please let me know that means it was (B.) Spending the cash..


7 0
2 years ago
Read 2 more answers
If f(x) varies directly with x and f(x) = 72 when x = 6, find the value of f(x) when x = 3.
Levart [38]

Answer:

36

Step-by-step explanation:

Since f(x) varies directly with x, f(x) can be expressed alternatively as \[f(x) = k * x\] where k is a constant value.

Given that f(x) is 72 when the value of x is 6.

This implies, \[72 = k * 6\]

Simplifying and rearranging the equation to find the value of k:

k = \frac{72}{6}

Hence k = 12

Or, \[f(x) = 12 * x\]

When x = 3, \[f(x) = 12 *3 \]

Or in other words, the value of f(x) when x=3 is 36

4 0
2 years ago
Read 2 more answers
Compute the permutation.
Anon25 [30]
So you have 8 digits (number available) to form 3 digit numbers (number selected).

Using the formula ^{a} P_{c} where a is the number of available digits, P is the permutation function and c is the number of digits to be selected.

The number of three digit numbers that can be formed = ^{8} P_{3}
                                                                                       = 336

                                                <span> O R

</span>By using the formula Permutation =  \frac{a ! }{( a - c) !} where a is the number of available digits and c is the number of digits to be selected.<span>

</span>⇒  Permutation = \frac{8 ! }{( 8 - 3) !}
<span>
</span>⇒  Permutation = \frac{40, 320 }{120}
<span>
</span>⇒ Permutation = 336<span>
</span>
8 0
3 years ago
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