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aev [14]
2 years ago
8

Four times the sum of twice a number and -3 is less than times that same number

Mathematics
1 answer:
MakcuM [25]2 years ago
3 0
Four times the sun of twice a number and -3
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Marius combined 4/8 gallon of lemonade, 3/8 gallon of cranberry juice, and 6/8 gallon of soda water to make punch for a party. H
Xelga [282]

13/8, which you can also write as 1 5/8

5 0
3 years ago
The units digit of a two digit number is 1 more than twice the tens digit. If the digits are reversed, the new number is 36 more
Vlad1618 [11]

Answer:

37

Step-by-step explanation:

Let the initial number be xy=10x+y.

Initial number:

Units digit = y

Tens digit = x

The units digit of a 2-digit number is 1 more than twice the tens digit, then

y=2x+1

Reversed number is yx=10y+x.

If the new number is 36 more than the original number, then

(10y+x)-(10x+y)=36

Simplify this equation:

10y+x-10x-y=36\\ \\9y-9x=36\\ \\y-x=4

Substitute y=2x+1 into the equation y-x=4:

(2x+1)-x=4\\ \\2x+1-x=4\\ \\x+1=4\\ \\x=3\\ \\y=2\cdot 3+1=7

Initial number: 37

6 0
3 years ago
How many solutions -3x+9-2x=-12-5X
vesna_86 [32]

Answer:

0

Step-by-step explanation:

5 0
3 years ago
What percent of $90 = $45
Lynna [10]
45 is exactly half of 90
that means 45 is 50% of 90.
8 0
3 years ago
3(2x-1)=5x+3+7x I do t get this cause I’m stupid
DiKsa [7]

Answer:

x = -1

Step-by-step explanation:

Solve for x:

3 (2 x - 1) = 7 x + 5 x + 3

Grouping like terms, 7 x + 5 x + 3 = (5 x + 7 x) + 3:

3 (2 x - 1) = (5 x + 7 x) + 3

5 x + 7 x = 12 x:

3 (2 x - 1) = 12 x + 3

Expand out terms of the left hand side:

6 x - 3 = 12 x + 3

Subtract 12 x from both sides:

(6 x - 12 x) - 3 = (12 x - 12 x) + 3

6 x - 12 x = -6 x:

-6 x - 3 = (12 x - 12 x) + 3

12 x - 12 x = 0:

-6 x - 3 = 3

Add 3 to both sides:

(3 - 3) - 6 x = 3 + 3

3 - 3 = 0:

-6 x = 3 + 3

3 + 3 = 6:

-6 x = 6

Divide both sides of -6 x = 6 by -6:

(-6 x)/(-6) = 6/(-6)

(-6)/(-6) = 1:

x = 6/(-6)

The gcd of 6 and -6 is 6, so 6/(-6) = (6×1)/(6 (-1)) = 6/6×1/(-1) = 1/(-1):

x = 1/(-1)

1/(-1) = -1:

Answer: x = -1

7 0
3 years ago
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