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3 years ago

PQR is a right angled triangle with angle R 90 According to Pythagoras rule

Mathematics

1 answer:

vazorg [7]3 years ago

3 0

Answer:

The Pythagorean Theorem states that $a^2+b^2=c^2$

Step-by-step explanation:

This formula applies to the side lengths and means that the length of leg "a" squared, plus the length of leg "b" squared, will equal the length of hypotenuse "c" squared. Please state a more specific question so I can go into more detail if you need it :)

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A restaurant bill is 56.39.Estimate a 15% tip

hjlf

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3 years ago

2x + y = -4 2x + 3y = 4

kirill115 [55]

Answer: x=4 ; y= -4

Step-by-step explanation:

2x + y = -4 .(-3)

2x + 3y = 4

-6x-3y=12

2x + 3y = 4

4x=16

x= 16

x=4

2x + 3y = 4

2.4+3y=4

8+3y=4

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3 years ago

The length of a rectangle is 4 units less than the width. The area of the rectangle is 21 units. What is the length, in units, o

bazaltina [42]

The formula of an area of a rectangle:

A = wl

We have l = w - 4 and A = 21.

Substitute:

w(w - 4) = 21 use distributive property

(w)(w) + (w)(-4) = 21

w² - 4w = 21 subtract 21 from both sides

w² - 4w - 21 = 0

w² - 7w + 3w - 21 = 0

w(w - 7) + 3(w - 7) = 0

(w - 7)(w + 3) = 0 ↔ w - 7 = 0 ∨ w + 3 = 0

w = 7 ∨ w = -3 < 0

l = w - 4 → l = 7 - 4 = 3

<h3>Answer: the length = 3 u.</h3>

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3 years ago

Please help me asap!!!!!!

padilas [110]

Answer:

z-12

Step-by-step explanation:

you start of by z baseball and i know for a fact that fewer means subtraction so the answer is z-12

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3 years ago

What is the value of k in the function ƒ(x) = 112 - kx if ƒ(-3) = 121?

DedPeter [7]

f(x) = 112 - kx
f(-3) = 112 - k(-3)
f(-3) = 112 - (-3k)
f(-3) = 112 + 3k
121 = 112 + 3k
- 112 - 112
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6 0

3 years ago

PQR is a right angled triangle with angle R 90 According to Pythagoras rule​

PQR is a right angled triangle with angle R 90 According to Pythagoras rule