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Klio2033 [76]
3 years ago
7

The second of three numbers is 3 times the first number. The third number is 5 more than the second number. If the second number

is decreased by twice the third the result is 5 find the three numbers.
Mathematics
1 answer:
Maurinko [17]3 years ago
3 0

b=3a

c=b+5

b-2c=5

b-2(b+5)=5

b-2b-10=5

-b=15

b=-15

c=-15+5

c=-10

-15=3a

a=-5

The numbers are -5, -15, and -10

I hope I helped you with your solution! If you could give me brainliest, I would be very thankful!

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enyata [817]

Answer:

a or b = a∪b = the place is a city or the place is in north america or the place is a city in north america

Step-by-step explanation:

a means a city

b means place in north america

a or b can be denoted as a∪b, which means a, or b, or both

Thus, we can say:

a or b = a∪b = the place is a city or the place is in north america or the place is a city in north america

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3 years ago
A store sells paint sets. Each paint set costs the same amount. During a sale, the store reduces the price of each paint set by
Verizon [17]

Answer:

$4.59

Step-by-step explanation:

At the sale price:

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Each paint set = Total cost of 5 paints set / 5

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What was the price of 1 paint set before the sale?

Because the store reduces the price of each paint set by $1.30 before selling, we will add $1.30 to the price of each paint set during sales

Price of each paint set during sales = $3.29

price of 1 paint set before the sale = $3.29 + $1.30

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6 0
4 years ago
write the equation of the line perpendicular to 3x + y = 4, containing the point (-6, -1). Write in slope intercept form.
Advocard [28]
First thing you need to do is find the slope. The slope must be opposite in sign and flipped. 
4 0
3 years ago
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The brain volumes ​(cm cubed​) of 20 brains have a mean of 1105.1 cm cubed and a standard deviation of 123.5 cm cubed. Use the g
kramer

Answer:

1332.1 \:cm^3 is neither significantly low nor significantly high.

Step-by-step explanation:

From the information given, we know that:

The mean is \bar{x}=1105.1 \:cm^{3} and the standard deviation is \sigma=123.5 \:cm^{3}.

The range rule of thumb says that:

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Applying these definitions, we get that

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We note that 1332.1 \:cm^3 is between 858.1 \:cm^3 and 1352.1 \:cm^3, which indicates  1332.1 \:cm^3 is neither significantly low nor significantly high.

6 0
4 years ago
Consider the function y 2x+3. which is true
Bess [88]

Answer:

True

Step-by-step explanation:

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