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3 years ago

The perimeter of a triangle is 7a-11b. If two of its sides are 2a+b and a-9b, what is the third side?

1 answer:

8 0

You subtract the 2 given sides from the perimeter so its

7a - 11b - (2a + b) - (a - 9b) ( Note the 2 sides must be in parantheses)

= 7a - 11b - 2a - b - a + 9b

adding like terms:-

= 4a - 3b

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In the figure at the right, what is the measure of angle c? A.15 B.35 C.50 D.65

stealth61 [152]

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3 years ago

What is the domain and range for the following function and its inverse? f(x) = -x + 5

iren2701 [21]

Answer:

Domain: $\mathbb{R}$

Inverse: $f^{-1}(x) = -x + 5$

Step-by-step explanation:

Since this is a linear function, the domain and range is simply the set of real numbers.

The inverse is obtain by switching the places of x and y, then solving for y.

Here,

y = -x + 5

So switching x and y,

x = -y + 5

Solving for y again,

y = -x + 5

Thus,

$f^{-1}(x) = -x + 5$

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4 years ago

Read 2 more answers

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Anna11 [10]

Answer:

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3 years ago

Simplify each expression by distributing and combined bf like terms (SHOW WORK) please

GarryVolchara [31]

Answer:

c - 39

Step-by-step explanation:

Given,

-4 (8 - c ) - (3c + 7 )

= -4 ( -c + 8 ) - (3c + 7 )

= 4c - 32 - ( 3c + 7 )

= 4c - 32 - 3c - 7

= ( 4 - 3 )c + ( -32 - 7 )

= c + ( -32 - 7)

= C - 39

hope this answer helps you dear! take care!

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago