3 years ago

Please help me I would really appreciate it!!!!?!!

Mathematics

2 answers:

daser333 [38]3 years ago

8 0

Answer:

55 guests

Step-by-step explanation:

131 = 21 + (2x)

subtract 21 from both sides

110 = 2x

x = 55 guests

kherson [118]3 years ago

6 0

Answer:

55 guests

Step-by-step explanation:

if he can afford to spend a total of $131, then you subtract the birthday cost ( $21 ) and divide the answer of those two ( $110 ) by $2 ( the amount for each guest ) which is 55, therefore, 55 is the largest number of guests Jeffrey can afford.

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If Joanne can paint a room in 3 hours and her sister Angela can paint the same room in 4 hours, how long (in h) would it take Jo

Gala2k [10]

Answer:

Step-by-step explanation:

If J can paint a room in 3 hours, in 1 hour she gets $\frac{1}{3}$ of the job done.

If A can paint a room in 4 hours, in 1 hour she gets $\frac{1}{4}$ of the job done. We need to find out how long it takes them if they paint together. The equation for this is:

$\frac{1}{3}+\frac{1}{4}=\frac{1}{x}$ where x is the number of hours it takes them to get the job done together. Multiply everything through by 12x to get