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Mnenie [13.5K]
3 years ago
5

What does y equal y-16-3y=0

Mathematics
1 answer:
Afina-wow [57]3 years ago
7 0

Answer:

y = - 8

Step-by-step explanation:

y - 16 - 3y = 0

Group like terms

y - 3y - 16 = 0

Add similar elements: y - 3y = - 2y

- 2y - 16 = 0

Add 16 to both sides

- 2y - 16 + 16 = 0 + 16

Simplify

- 2y = 16

Divide both sides by - 2

\frac{-2y}{-2} = \frac{16}{-2}

Simplify \frac{-2y}{-2}: y

\frac{-2y}{-2}

Apply the fraction rule: \frac{-a}{-b}  = \frac{a}{b}

= \frac{2y}{2}

Divide the numbers: \frac{2}{2}  = 1

= y

Simplify \frac{16}{-2}: - 8

\frac{16}{-2}

Apply the fraction rule: \frac{-a}{-b}  = \frac{a}{b}

-\frac{16}{2}

Divide the numbers: \frac{16}{2} = 8

= - 8

y = - 8

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Answer: (1) 70%

(2) 6 ft/sec

(3) z = 16x

(4) Ratio = 2: 9

(5) Ratio = 1 : 9

(6) Ratio = 26 : 365

(7) Percentage read =25%

(8) 410 students would eat the same type type of snack again

(9) No options provided

(10) 21 Lawns

Step-by-step explanation: (1) When Margie collected 50 seashells, it consisted of 15 smooth shells and 35 shells with ridges. The percentage of shells that had ridges can be calculated as follows;

Shells with ridges = (35/50) * 100

Shells with ridges = (7/10) * 100

Shells with ridges = 70%

(2) A car travels 120 feet in 20 seconds, this means for every second, the car travels a distance shown as

Distance per sec = 120/20

Distance per sec = 6

Therefore, the rate of speed is shown as 6 ft/s (that is, 6 feet per second)

(3) There are 8 ounces in one cup and then there are 4 cups in one quart. This means every cup of 8 ounces can be found 4 times in one quart, therefore there are

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If there are 4 quarts in one gallon, then there are 4 quarts of 32 ounces each in one gallon. That is, there are

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128 ounces in one gallon

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y = 4x --------- (1)

z = 4y ---------(2)

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Therefore, z = 4y can now be expressed as

z = 16x

This expression shows that one gallon z, can be expressed as 16 times x (which is 8 ounces)

(4) If the recipe requires 2 tablespoons of butter, 4 tablespoons of powdered sugar and 5 tablespoons of brown sugar, then the ratio of butter to that of powdered and brown sugar is derived as follows;

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Percentage read = (56/224) * 100

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Work done in 5 days = 3

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