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shutvik
3 hours ago
9

Bill said, “I am half as old as my sister was last year.” If Bill is now 8 years old, how old is Bill’s sister?

Mathematics
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In right triangle qrs, angle r is a right angle. The altitude rt is drawn to hypotenuse qs. If qr is 20 and qs is 25 then find t
lawyer [12517]

Answer:

qt's length = 16

Step-by-step explanation:

The problem states that qrs is a right triangle,

where qr = 20

          sr =?

          qs = 25

          qt =?

1)

Calculate sr

hypotenuse² = base² + height²

sq² = sr² + rq²

25² - 20² = sr²

sr = √(25² - 20²)

sr = 15

2)

When altitude rt is dropped to hypotenuse qs, it creates

two right triangles: rtq and rts.

Δrtq

height = rt

base= tq = 25 - x

hypotenuse = qt = 20

Δrts

height = rt

base= ts = x

hypotenuse = sr = 15

Both triangles share the same height, which is rt

Using the Pythagorean theorem:

      Δ rtq                                           Δ rts

hypotenuse² - base² = height²

20² - (25 - x)² = 15² - x²

400 - (625 + x² - 50x) = 225 - x²

400 - 625 - x² + 50x = 225 - x²

-225 - x² + 50x - 225 + x² = 0

-450 + 50 x = 0

50x = 450

x = 450/50

x = 9

Base of Δ rtq = tq = 25 - x

                         tq = 25 - 9

                         tq = 16  

5 0
3 months ago
Read 2 more answers
If Bert had 3 cents more he would have twice as much as Georgia. If he had 4 cents less, he would have the same amount.
Zina [12379]
2G=B+3
G=B-4

2(B-4)=B+3
2B-8=B+3
B=11

Bert possesses 11 cents
8 0
3 months ago
The product of three integers is −11. Determine all of the possible values for the three factors. Write each set of three factor
AnnZ [12381]
The possible sets of integers that yield a product of -11 include (-1, 1, 11), (-11, -1, -1), and (-11, 1, 1). An integer can be understood as a whole number encompassing zero, both positive and negative values. Given that the product should equal −11, and knowing the factors of 11 are 1 and 11, we conclude with the different possible integer combinations.
4 0
1 month ago
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