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Solnce55 [7]
3 years ago
14

the legs of a right triangle are 3 units and 4 units long. another right triangle is dilated from this triangle using a scale fa

ctor of 3. what are the side lengths and the perimeter of the dilated triangle?
Mathematics
1 answer:
maks197457 [2]3 years ago
3 0
I believe the last leg will be 5, because it should be a 3,4,5 triangle

you are making it bigger, and so you must multiply 3 to each side (dilate means to become wider)
3 x 3 = 9
4 x 3 = 12
5 x 3 = 15

9, 12, 15 are you triangle side lengths

To find perimeter, add them together

15 + 12 = 27
27 + 9 = 36

Your perimeter is 36

hope this helps
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2/3b+5=20−b Solve for b. Both sides have to be equal.
BigorU [14]

Answer:

B=9

Step-by-step explanation:

Solve for  b  by simplifying both sides of the equation, then isolating the variable.

Hope this helps

3 0
2 years ago
Read 2 more answers
Which of the following are solutions to the equation below?
Natasha2012 [34]
Both A and C would be solutions to the equation.

In order to solve for this you must first get the equation equal to 0. 

2x^2+5x+8=6 ----> subtract 6 from both sides
2x^2 + 5x + 2 = 0

Now knowing this we can use the coefficients of each one in descending order of power as a, b and c. 

a = 2 (because it is the coefficient to x^2)
b = 5 (because it is the coefficient to x)
c = 2 (because it is the end number)

Now we can plug these values into the quadratic equation. 

\frac{-b +/- \sqrt{b^{2} - 4ac } }{2a}

\frac{-5 +/- \sqrt{5^{2} - 4(2)(2) } }{2(2)}

\frac{-5 +/- \sqrt{9} }{4}

\frac{-5 +/- 3 }{4}

\frac{-5 + 3 }{4} or -1/2 for the first answer

\frac{-5 - 3 }{4} or -2 for the second answer

5 0
3 years ago
Find the area of the shaped region
Ganezh [65]

Answer: B

Step-by-step explanation:

A = 0/360 ×π×r^2

=135/360×π×11×11

=142.55 yd^2

5 0
3 years ago
What is the nth term for the sequence 5 , 14 , 29 , 50 , 77
Marina86 [1]
The answer would be 3n^2 + 2.

This can be found/proven by replacing "n" with term number (1,2,3,4...), then solving to get the final number. For example 3 * 1^2 + 2. You would first do 1^2, which is 1. Next, you would multiply 1 by 3, to get 3. Finally, you'd and the 2 to get 5. 5 is the 1st term, and you can use this same equation to get the rest of the terms you need.

I hope this helps!
8 0
2 years ago
The sum of three numbers is 10. The first number minus the second plus the third is 6. The first minus the third is 2 more than
mina [271]
The answer to your question is 8
7 0
3 years ago
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