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VashaNatasha [74]
3 years ago
14

What is the perimeter of this triangle ⬆️​

Mathematics
1 answer:
kati45 [8]3 years ago
8 0

Answer:

36 km

Step-by-step explanation:

We can use the Pythagorean theorem to find a

a^2 +b^2 =c^2

a^2 +12^2 = 15^2

a^2 +144=225

Subtract 144 from each side

a^2 =225-144

a^2 =81

Taking the square root of each side

a = sqrt(81) = 9

Then we need to find the perimeter

a+12+15

9+12+15

36

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That would be at quadrant to so you want to plot -1 and then half a box to the left. Then you want to point -5 and then just go up half. Hope this helps
6 0
3 years ago
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A new car is purchased for 23900 dollars. The value of the car depreciates at 9.75% per year. To the nearest year, how long will
inna [77]

Answer:

11 years

Step-by-step explanation:

we know that

The  formula to calculate the depreciated value  is equal to  

V=P(1-r)^{x}  

where  

V is the depreciated value  

P is the original value  

r is the rate of depreciation  in decimal  

x  is Number of Time Periods  

in this problem we have  

P=\$23,900\\r=9.75\%=0.0975\\x=?\\V=\$7,700

substitute in the formula

7,700=23,900(1-0.0975)^{x}  

(77/239)=(0.9025)^{x}  

Apply log both sides

log(77/239)=xlog(0.9025)  

x=log(77/239)/log(0.9025)  

x=11\ years

6 0
3 years ago
Simplify. What are the restrictions on the variable?
Natali5045456 [20]
A cannot equal to 4, because it would make the denominator equal to zero
5 0
3 years ago
Select all the expressions that represent a 20% discount off the price of an item that originally costs d dollars.
Katyanochek1 [597]

Answer:

B. d - 0.2

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Step-by-step explanation:

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3. What is the y-intercept in the equation y= -2x + 5
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。☆✼★ ━━━━━━━━━━━━━━  ☾

Equations are generally in the form of:

y = mx + c

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As you can see, in this equation, the y intercept is 5

Thus, your answer is C. 5

Have A Nice Day ❤  

Stay Brainly! ヅ  

- Ally ✧  

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