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Irina-Kira [14]
3 years ago
13

Can someone please solve this ASAP?

Mathematics
1 answer:
olga2289 [7]3 years ago
8 0
The ladder and the wall form a right triangle.
The length is the hypotenuse = 15.
The base = 2*(15/5) = 2*3 = 6

Use pythagorean theorem to find other side of triangle:
a^2 + b^2 = c^2 \\  \\ a^2 + 6^2 = 15^2 \\  \\ a^2 + 36 = 225 \\  \\ a^2 = 189 \\  \\ a = \sqrt{189} = 3 \sqrt{21}
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Brainliest to correct obv
Natalija [7]

Answer:

21

Step-by-step explanation:

If you multiply 7x6 and add two you will get an answer of 21

Hope it helps

5 0
3 years ago
Read 2 more answers
Stacy wants to build a patio with a small, circular pond in her backyard.The pond will have a 6-foot radius. She also wants to i
solong [7]
First we are going to find the Area of the pond using the area of a circle formula: A= \pi r^2
where
A is the area of the circle 
r is the radius of the circle 
We know for our problem that the pond will have a 6-foot radius, so r=6. Lets replace that value on our area formula:
A= \pi r^2
A= \pi (6)^2
A=113.1ft^{2}
We know that the <span>cost of installing the pond is $0.62 per square foot, so lets multiply the area we just found by the cost:
Total cost of pund=</span>(0.62)(113.1)=70.12 dollars

Now, let x be the width the rectangle, so its length will be x+13. Remember that the area of a rectangle is width times length, so:
A=x(x+13)
A=(x^2+13x)ft^2
Since the cost of installing ties is $1, the cost of installing ties in our rectangle will be x^2+13x dollars.

<span>Stacy can spend no more than $536 on this project, so we can setup an inequality relating the cost of the pound and the cost of installing ties:
</span>70.12+x^2+13x \leq 536
x^2+13x \leq 465.88

We can conclude that the inequality that can be used to fin the width, x, of the patio is x^2+13x \leq 465.88
6 0
3 years ago
There are two numbers which sum to 23. If one number is seven less than four times the other, find the numbers.
mart [117]

Answer:

Numbers are 6 and 17.

Step-by-step explanation:

Let the two numbers are 'a' and 'b'.

"Sum of these numbers = 23"

a + b = 23 --------(1)

"One number is 7 less than 4 times the other"

a = 4b - 7 ---------(2)

Substitute the value of 'a' in equation (1) from equation (2)

(4b - 7) + b = 23

5b - 7 = 23

5b = 23 + 7

5b = 30

b = 6

From equation (2),

a = 4b - 7

a = 4×6 - 7

a = 24 - 7

a = 17

Therefore, the numbers are 6 and 17.

8 0
3 years ago
1. Find the products. Show your thinking. An example of how to show your thinking is provided.
Gre4nikov [31]
So number 1 is B number 2 is A number 3 is B
4 0
3 years ago
Is 13 over 3 (13/3) in decimal form rational or irrational?
sladkih [1.3K]

Answer:

I believe its rational

Step-by-step explanation:

I believe its rational

7 0
2 years ago
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