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Scilla [17]
3 years ago
14

IF YOU ARENT ANY OF THES PEOPLE PLZ DON'T ANSWER THIS QUESTION. Hobie, kkmmll44, Katyazamo.

Mathematics
1 answer:
Marianna [84]3 years ago
8 0

The Associative Property say that it doesn't matter how we group the numbers (i.e. which we calculate first) when we add

(a + b) + c = a + (b + c)

The Commutative Property say we can swap numbers over and still get the same answer when we add

a + b = b + a

The Distributive Property:

a(b + c) = ab + ac

------------------------------------------

-3a + 4b + 5a + (-7b) = -3a + 5a + 4b + (-7b)

<h3>Answer: the commutative property</h3>
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What is an equation of the line that is parallel to y=5x−7 and passes through (1, 11) ? Enter your equation in the box.
d1i1m1o1n [39]

ANSWER

y = 5x + 6

EXPLANATION

The equation of the given line is

y=5x-7

This line is in the slope -intercept form,

y = mx + c

where

m = 5

is the slope.

The line which is parallel to this line and passes through (1,11) also has slope

m = 5

Let the equation of this line be

y = mx + b

This implies

y = 5x + b

We substitute x=1 and y=11 to get

11 = 5(1) + b

b = 11 - 5 = 6

The required equation is

y = 5x + 6

6 0
3 years ago
One leg of a right triangle is 21 inches longer than the other leg, and the hypotenuse is 39 inches.
Valentin [98]

Answer:

One leg - 15 inches

Second leg - 36 inches.

Step-by-step explanation:

One leg - x inches.

Second leg - (x + 21) inches.

Hypotenuse - 39 inches.

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x² + (x + 21)² = 39²

x² + x² + 2*21x  + 21² = 39²

2x² + 42x - 39² + 21² = 0

2x² + 42x - 1080 = 0

x² + 21x - 540 = 0

(x - 15)(x + 36) = 0

x = 15, x = - 36

We can use only positive value.

One leg - x inches = 15 inches

Second leg - (x + 21) inches = 15+21=36 inches.

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