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enyata [817]
3 years ago
7

Three times a number equals 40 more than five times the number. What is the number

Mathematics
1 answer:
ipn [44]3 years ago
5 0
What’s the problem. It would help if you put you’re numbers down so I new what to multy
You might be interested in
Find the greatest number that will divide 63, 45 and 69 so as to leave the same remainder.
jeka57 [31]

Answer:

6

Step-by-step explanation:

Let n be unknown divisor and a be the same remainder, then

63=q_1\cdot n+a\\ \\45=q_2\cdot n+a\\ \\69=q_3\cdot n+a

Subtract a from all equalities:

63-a=q_1\cdot n\\ \\45-a=q_2\cdot n\\ \\69-a=q_3\cdot n

Subtract them:

63-45=(q_1-q_2)n\Rightarrow 18=(q_1-q_2)n\\ \\69-63=(q_3-q_1)n\Rightarrow 6=(q_3-q_1)n\\ \\69-45=(q_3-q_2)n\Rightarrow 24=(q_3-q_2)n

The greatest number is 6. When you divide numbers 63, 45, 69 by 6, you'll get remainders 3, 3, 3, respectively.

7 0
2 years ago
Jessi sold half her comic books. Then, she bought 9 more. She now has 11 total. How many did she begin with?
Alex Ar [27]

Answer:X+9=11

9-9|11-9

X=2

Step-by-step explanation:When the beginning number is unknown we use “x” to be a place holder. If she got 9 more books we would add 9 to the equation. Finally if 11 is the total, the end of the equation would equal 11.

6 0
3 years ago
PLEASSSSE HELP
ddd [48]
You answer is 6a minus 4b+11

3 0
3 years ago
A taxi charges $1.75 plus a fee of $0.75 for each mile traveled. The total cost of a ride, without a tip, is $4.75. How many mil
horrorfan [7]
4.75= 1.75+0.75x
<span>x=4 miles
</span>
1)simplify both sides of equation
2) Flip te equation = 0.75x+1.75=4.75
3) Subtract 1.75 from both sides
4) Divide both sides by 0.75


6 0
3 years ago
Read 2 more answers
As captain of his football team, Jamal gets to call heads or tails for the toss of a fair coin at the beginning of each game. At
ivann1987 [24]

Answer: the probability is 0.5

Step-by-step explanation:

A fair coin has the same probability for each result, so the probability of landing in tails is the same that landing in heads (0.5 for each of them)

Now, each flip of the coin is an independent event.

This means that the previous flips do not affect the next flip, so the fact that the previous 5 flips landed in heads has no impact in the probability of future flips.

Then the probability that in the next flip, the coin will land in tails up is 0.5

5 0
2 years ago
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