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Inga [223]
3 years ago
13

What is the measure of angle x? 10 15 45 60

Mathematics
2 answers:
nevsk [136]3 years ago
7 0

Answer:

45

Step-by-step explanation: since the lines form a Z that means if you add 30 by another number it will equall 75 so to get the number subtract 3o from 75 and you'll get 45


EastWind [94]3 years ago
4 0

Answer:

x = 45

Step-by-step explanation:

We know that the sum of (x+30)  and 75 are vertical angles  so they are equal

x+30 = 75

Subtract 30 from each side

x+30-30 = 75 -30

x = 45

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Five times my age 4 years ago is the same as 3 times my age in 2 years." How old is Elmo now?
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Answer:

elmo is 3 right now

Step-by-step explanation:

5x -4 = 3x+2

2x= 6

x= 3

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3 years ago
Sara bought a used car for $10,000. She learned from online that the value of a car depreciated 15% per year. What is the formul
Fudgin [204]

Answer:

Step-by-step explanation:

Value of Sam's car after t years =

==10000*(1-\frac{15}{100})^{t}\\\\=10000*(\frac{85}{100})^{t}\\\\=10000*(0.85)^{t}

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4 0
3 years ago
Find the length of side x in the simplest radical form with a rational denominator.
krok68 [10]

Answer:

\sqrt{2}

Step-by-step explanation:

We can use either angle, but I'm going to use the one on the bottom. So, in order to find x, we need to use tangent. One side we know is the adjacent, and the side we don't know is the opposite, therefore we need tangent. Here's the equation:

tan(45)=\frac{x}{\sqrt{2}}

Obviously, we can't have a root in our denominator, so we need to get rid of it somehow. Here's how:

We multiply the denominator of the fraction by \sqrt{2}. \sqrt{2} multiplied by itself is simply 2. Try it! We also want to multiply the numerator by \sqrt{2}, but there isn't really a number we can use with that, so we'll just add it to the side. The equation you have now is:

tan(45)=\frac{x\sqrt{2} }{2}

Let's try to work this out now. Since the denominator is 2, we have to multiply both sides by it to find x.

\frac{x\sqrt{2} }{2*2} =x\sqrt{2}

tan(45)*2=2

We can plug 2 in for the x in the numerator now:

\frac{2\sqrt{2} }{2}

2 and 2 cancel out, so you get 1 in both the numerator and denominator. That's how we get our answer of x=\sqrt{2}

Also, because this is a 45-45-90 triangle, you don't really have to do all that work. If it's a 45-45-90 triangle, both legs should be the same length. :)

7 0
3 years ago
How do you write 0.4335 as a fraction
kogti [31]
0.4335/1 x 10000/10000
=4335/10000
=867/2000
3 0
3 years ago
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