3 years ago

What is (f - g)(x)?

Mathematics

1 answer:

salantis [7]3 years ago

8 0

Answer:

to find your answer i thinks its best you just go to google caculator

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Consider the proof. Given: In △ABC, BD ⊥ AC Prove: the formula for the law of cosines, a2 = b2 + c2 – 2bccos(A) Statement Reason

loris [4]

Solution: The missing reason in Step 8 is substitution of $x=c\cos (A)$ .

Explanation:

The given steps are used to prove the formula for law of cosines.

From step 5 it is noticed that our equation is

$a^2=b^2-2bx+c^2$ ..... (1)

From step 7 it is noticed that the value of $x$ is $c\cos (A)$ .

So by substituting $c\cos (A)$ for $x$ in equation (1) we get the equation of step 8, i.e.,

$a^2=b^2-2bc\cos (A)+c^2$

Hence, the missing reason in Step 8 is substitution of $x=c\cos (A)$ .

5 0

3 years ago

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13. You buy a new monitor for your desktop computer for $295. The store charges 9% in sales tax. How much sales tax is added to

IgorLugansk [536]

13 = 295 x 9 % = 26.55

14= 295 + 26.55 = 321.55

8 0

3 years ago

You and three friends go out to eat and decide to split the bill evenly. The food you order comes to a total of $48. If you leav

zloy xaker [14]

Answer:

11.64

Step-by-step explanation:

100%-> 48

15%-> 7.20

6.25%-> 3

48+7.20+3=58.20

58.20÷5=11.64

4 0

3 years ago

hector and maggie are having a typing test hector typed 25 words in 45 seconds maggie typed 32 words in 65 second who typed at a

xenn [34]

Answer:

Maggie typed at a slower rate.

Step-by-step explanation: Maggie typed slower because 32 words/65 seconds is .49 words per second or half a word per second whereas Hector is 25 words/45 seconds or .55 words per second.

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4 years ago

Help on number 8 please!

solmaris [256]

Answer:

ab/3

Step-by-step explanation:

I don't really know how to explain.

Μα†hway

hope this helps!

5 0

2 years ago

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