Which of the following is a solution for the equation 7x + 21 = 105?105
15
84
12
Answers
Answer:
x= 12
Step-by-step explanation:
Simplifying
7x + 21 = 105
Reorder the terms:
21 + 7x = 105
Solving
21 + 7x = 105
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-21' to each side of the equation.
21 + -21 + 7x = 105 + -21
Combine like terms: 21 + -21 = 0
0 + 7x = 105 + -21
7x = 105 + -21
Combine like terms: 105 + -21 = 84
7x = 84
Divide each side by '7'.
x = 12
Simplifying
x = 12
Answer:
12
Step-by-step explanatio
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Answers
Answer:
-6 < y < ∞
Step-by-step explanation:
The range is the value of the output, in this case the value of y
The value is from -6 not including -6 to infinity
-6 < y < ∞
Answer:
C. from -6 to infinity
Step-by-step explanation:
The range is the set of the y-coordinates of the points of the function.
The lowest value of y is -6 or just greater than -6.
All values greater than y are also part of the range.
Answer: Choice C. from -6 or just greater than -6 to infinity
Answers
Final answer:
The price of one piece of bubble gum is $0.15. This can be determined by setting up algebraic equations based on the given information, allowing the fudge and bubble gum prices to be calculated.
Explanation:
The subject of this question is algebra and it uses a system of simultaneous equations to find the price of each piece of candy.
- Let's say 'f' is the cost of fudge and 'g' is the cost of gum.
- We can write two equations based on the information given: 5f + 3g = 5.70 and 2f + 10g = 3.60.
- To find the cost of the bubble gum first, we can eliminate 'f' by multiplying the first equation by 2 and the second one by 5 which will give us: 10f + 6g = 11.40 and 10f + 50g = 18.00
- Then we subtract the second equation from the first equation. This gives us: 44g = 6.60.
- Finally, we divide by 44 to get the price of gum, 'g' = 6.60 / 44 = $0.15.
Learn more about Price of bubble gum here:
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Answers
(3x+2x-4x)+(5+-9-3)
(5x-4x)+(-4-3)
(1x)+(-7)
x-7
rational
irrational
Answers
Answer:
Rational.
Step-by-step explanation:
The product of two rational numbers is always rational. This means that if you multiply two numbers that can be made into a fraction, their product can also become a fraction.
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Answers
Answer:
Step-by-step explanation:
sin(x) + tan(x) =sin(X) + sin(x)/cos(x)
=sinx(1+1/cosx)
=Sinx(1+secx)
=1+secx/cosecx. (Since sinx=1/cosecx)
Hence LHS=RHS proved