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Sladkaya [172]
3 years ago
13

Let me know if u cant see the picture

Mathematics
1 answer:
zheka24 [161]3 years ago
5 0
Answer: Yes I can

Explanation: I have eyes.
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Find the value of x. Give your answer in simplest radical form.
MrMuchimi
Answer: x = 5*sqrt(10)
"sqrt" stands for "square root"

-------------------------------------------------------

Refer to the attached image. The figure is not to scale. Notice how I've added in y and z (blue and red respectively)
The length y is the bottom horizontal leg for the triangle on the right.
The length z is the bottom horizontal leg for the triangle on the left.

To find x, we need to find y first, which will help us find z, and then we can finally get to x.

Let's find y first
To do this, we use the pythagorean theorem
a^2 + b^2 = c^2
y^2 + 9^2 = 15^2
y^2 + 81 = 225
y^2 + 81-81 = 225-81
y^2 = 144
sqrt(y^2) = sqrt(144)
y = 12 ... keep in mind that y is a length, so it needs to be positive

Notice how the y and z lengths combine to form a total length of 25 units
Therefore,
y+z = 25
12+z = 25
12+z-12 = 25-12
z = 13

Now that we know z = 13, we can find x. Again we use the pythagorean theorem one last time
a^2 + b^2 = c^2
z^2 + 9^2 = x^2
13^2 + 9^2 = x^2
169 + 81 = x^2
250 = x^2
x^2 = 250
sqrt(x^2) = sqrt(250)
x = sqrt(250)
x = sqrt(25*10)
x = sqrt(25)*sqrt(10)
x = 5*sqrt(10)
This is in simplest radical form as we can't factor 10 any further (there are no perfect square factors that go into 10). This is the exact length of side x

Note: using a calculator, 5*sqrt(10) = 15.8113883008419 approximately

6 0
3 years ago
Need help ASAP help please
galben [10]

Answer:

24 miles

Step-by-step explanation:

2.5 inches represents 15 miles,

so 1 inch must represent 15/2.5 = 6 miles.


Since the cities are 4 inches apart on map, they will be 6*4 = 24 miles apart in actual.

6 0
2 years ago
How many 1/3 yard are in 4 yards
mamaluj [8]

Answer:

12

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Explain how to use the regression calculator to make a reasonable prediction.
Naddika [18.5K]

Given bivariate data, first determine which is the independent variable, x, and which is the dependent variable, y. Enter the data pairs into the regression calculator. Substitute the value for one variable into the equation for the regression line produced by the calculator, and then predict the value of the other variable.

8 0
2 years ago
Read 2 more answers
Identify the factors of x2 + 25y2. ...?
Sveta_85 [38]
Is the equation like this? x^2 + 25y^2?
If the equation is like that, the answer would be (x-5y)^2 or (x-5y)(x-5y).
how did I get this? Just divide the factors or the get the square root of 25y^2 and it would be 5y. Then just try if it is positive or negative. In this case, it is negative because there is no factor w/ no exponential form. I hopemy answer helped you.
4 0
3 years ago
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