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antiseptic1488 [7]
3 years ago
9

Use mental math to determine the solution to x - 3 = 10 .

Mathematics
2 answers:
DanielleElmas [232]3 years ago
8 0
First Step: Leave "x" alone, pass the 3 to the other side X= 10+3 Second Step: Add 10 plus 3 X= 13 So your answer is: x=13
IRISSAK [1]3 years ago
3 0
X=13 that is what I got

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Mrrafil [7]

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4 0
2 years ago
The question is:
saul85 [17]
f(x) = \sqrt{x+1} \\ y = \sqrt{x+1} \ or \ y^2 = x+1 \ or \ x = y^2 - 1 \\ Therefore, \ f^{-1}(x)=x^2 - 1

(fof^{-1})(a) = f(f^{-1}(a))=f(a^2-1) \\ =\sqrt{a^2-1+1}=\sqrt{a^2}=a \\  \\ (f^{-1}of)(a)=f^{-1}(f(a))=f^{-1}(\sqrt{a+1})= \\ (\sqrt{a+1})^2-1 = a+1-1 = a

Therefore, (fof^{-1})(a) = (f^{-1}of)(a) = a

8 0
2 years ago
Which of the following is a polynomial in this question?
Veronika [31]
B.) (x^6-2)/(x^-4 + 3)
7 0
3 years ago
Joan bought a soft drink for 3 dollars and 8 candy bars. She spent a total of 43 dollars. How much did each candy bar cost? Whic
Oksana_A [137]

Answer:

each candy bar cost 5 dollars

Step-by-step explanation:

first the drink cost 3 dollars so take that away from the total and you have 40. then do 40 divided by the 8 candy bars and you get 5. Which means that each candy bar cost 5 dollars

8 0
3 years ago
Can someone please tell me what to do in this question im so confused
Sergeu [11.5K]
Im no expert but i think its
input: x,independent variable ,domain
output: y, dependent variable , range
extra: f(x) , discrete, and slope
3 0
2 years ago
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