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PilotLPTM [1.2K]
2 years ago
6

Hector ' s age is 4 less than a number x. Hector is 12 years old. Find the number.

Mathematics
1 answer:
In-s [12.5K]2 years ago
3 0
12+4 =x so you would add 12=4 to get 16. or x=16 
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The answer to 3.x + 14x
Licemer1 [7]
Add 3x and 14. =17x hope this helps
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You order two tacos and a salad. the salad costs 2.50.you pay 8% sales tax and leave a $3 tip. you pay a total of 13.80 how much
riadik2000 [5.3K]
Given:Price of one taco = x; price of 2 tacos = 2xPrice of salad = $2.50Sales tax = 8% of the combined price of two tacos and a salad, namely .08(2x + 2.50)Tip = constant fee = $3.00Total bill = $13.80 Therefore the equation becomes
2x + 2.50 + .08(2x + 2.50) + 3 = 13.80 Solutions: 2x + 2.50 + .16x + .20 + 3 = 13.80 (using the distributive property to multiply 2x and 2.5 by .08).2.16x + 2.70 + 3 = 13.80 (combining like terms)2.16x + 5.70 = 13.80 (combining like terms)2.16x + 5.70 = 13.80 - 5.70 (subtraction property of equality)2.16x = 8.10x = 8.10/2.16 = 3.75 (division property of equality)
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3 0
2 years ago
Can someone help me please with number 3?
Reil [10]

Answer:

The cost of 4 medium pizzas:

4 (x - 3)

Step-by-step explanation:

#3

x = the cost of a large pizza

medium pizza costs $3 less than a large pizza. So it's x - 3

If 4 medium pizzas then it will be: 4 (x - 3)

6 0
2 years ago
Who wrote down the equation for the law of gravitation?
aalyn [17]
It was the English Scientist Sir Isaac Newton.
7 0
3 years ago
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Mila [183]
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6 0
3 years ago
Read 2 more answers
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