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3 years ago

Help please, asap, And take your time answering please!

Mathematics

1 answer:

ankoles [38]3 years ago

5 0

Answer:

(a) 25

(b) (5+4)*2 +6 -2*2 -1

Step-by-step explanation:

(a) evaluating exponents:

6*7 -9*9 +64

Evaluating products:

42 -81 +64

Evaluating sums:

-39 +64

(b) The last three terms of the expression sum to +1, and it is fairly easy to modify the first two terms to make one term that has a value of 18. Then the expression evaluates as 18+1 = 19.

(5+4)*2 +6 -2*2 -1

(c) Evaluating parentheses:

= 9*2 +6 -2*2 -1

Evaluating products:

= 18 +6 -4 -1

Evaluating sums (left to right):

= 24 -4 -1

= 20 -1

= 19

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Answer:

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Step-by-step explanation:

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2 years ago

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Answer:

a) f(0) = -9

b) f(2) = -5

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Step-by-step explanation:

We are given the function $f(x)=2x-9$ and we need to find the following:

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For finding f(0) put x =0 in the given function

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So, we get f(2)=-5

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For finding f(1/2) put x =1/2 in the given function

$f(x)=2x-9\\Put\:x=\frac{1}{2}\\f(\frac{1}{2})=2(\frac{1}{2})-9\\f(\frac{1}{2})=1-9\\f(\frac{1}{2})=-8$

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