3 years ago

Four times a number added to seven times the number equals 55

Mathematics

2 answers:

Naily [24]3 years ago

6 0

4 times 12 = 48
48 + 7 = 55

VLD [36.1K]3 years ago

5 0

Its 12 because 4 times 12 is 48 if you add 7 to 48 you get 55

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Peter has 100 dollars. His mom gives him x dollars more. Write an expression to represent how much money he now has.

frez [133]

Answer:

100 + x

Step-by-step explanation:

If Peter has an initial 100$, and his mom gives him an additional x$, then we can simply write the total amount in an expression using addition as such:

100 + x

So Peter now has 100 + x amount of dollars.

Cheers.

6 0

3 years ago

Read 2 more answers

There are 5 different coloured cups in a row.

Marizza181 [45]

There are 12 possible arrangements.

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Considering that the blue cup has to be on one end, we consider the number of arrangements possible with the other 4 cups, then multiply by 2(considering the blue on each end).

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Considering green and yellow before red and purple, there are $2 \times 2 = 4$ outcomes(G-Y-R-P, G-Y-P-R, Y-G-R-P and Y-G-P-R).
Another two possible outcomes are yellow-purple and green-red, or vice-versa, thus 4 + 2 = 6 outcomes.
To account for the blue on the end, multiplying by 2. $2 \times 6 = 12$
There are 12 possible arrangements.