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Lilit [14]
3 years ago
13

How do i prove that they are right triangles ?

Mathematics
2 answers:
spayn [35]3 years ago
8 0
If it is 90 degreees at the angle
Juliette [100K]3 years ago
3 0

Answer:

You use the Pythagorean Theorem or a²+b²=c²

a and b are the two shorter sides, c is the hypotenuse, the longest side.

Step-by-step explanation:

I will do them for you:

     12²+16²=20²

   144+256=400

           400=400

Triangle XYZ is a Right Triangle :)

    15²+20²=25²

  225+400=625

           625=625

Triangle PQR is a Right Triangle :)

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Claire has $300 Is an account. She decides she is going to take out $25 each month.
Elena-2011 [213]
Recursive equation would be f(x+1) = f(x) - 25 with f(0) = 300

Explicit equation would be f(x) = -25x + 300

And graph would looks like this: 

5 0
3 years ago
Read 2 more answers
Question 3
hoa [83]

answer is (-7,2)

y = -x -5

y= x+9

Both equations have y on the left hand side

So we equate both equations

We replace -x-5 for  y in the second equation

-x -5 = x+9

Subtract x on both sides

-2x -5 = 9

Now add 5 on both sides

-2x = 14

Divide by -2 from both sides

x = -7

Now plug in -7 for x in the first equation

y = -x -5

y = -(-7)  -5= 7-5 = 2

So answer is (-7,2)

4 0
3 years ago
Read 2 more answers
Kerry's saving account has balance of $372 for grandmother is going to give her a birthday check was 1/4 of her savings parents
igor_vitrenko [27]

Answer:

Step-by-step explanation:

372 + 1/4*372 = $465

$465 is her new savings and 33% of it is $153.45

$465 + $153.45 = $618.45

So yes she would have enough money to buy a plane ticket to alaska the cost $600

6 0
3 years ago
Which of the following equations has the given solution set?
tester [92]
-2m + 5 = 2m + 5
2m + 2m = 5 - 5
4m = 0
m = 0

-2m + 5 = -2m + 5
-2m + 2m = 5 - 5
0 = 0

-2m + 5 = -2m - 5
-2m + 2m = 5 + 5
0 = 10
Solution set is Ф
The third equation is the correct answer.
8 0
3 years ago
If $8259 principal is invested in a savings account that pays 5.25% interest compounded continuously how much money will be in t
VMariaS [17]

Answer:

A(10) = $13,961.50

Step-by-step explanation:

First, convert R as a percent to r as a decimal

r = R/100

r = 5.25/100

r = 0.0525 rate per year,

Then solve the equation for A

The formula is given as:

A = Pe^rt

P = 8259

r = 0.0525

t = 10 years.

Hence,

A = 8,259.00 × e^(0.0525×10)

A = $13,961.50

Therefore, the money that will be in the account after 10 years is $13,961.50

5 0
3 years ago
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