2 years ago

Solve the equation x² - 6x = 15 by completing the square.

Mathematics

1 answer:

jonny [76]2 years ago

4 0

Answer:

Use the formula ( b 2 ) 2 in order to create a new term. Solve for x by using this term to complete the square.

Exact Form: x = ± 2 √ + 3

Decimal Form: x = 7.89897948

1.898979488

Step-by-step explanation:

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BabaBlast [244]

25/12.5 = 40/y
cross multiply
(25)(y) = (12.5)(40)
25y = 500
y = 500/25
y = 20 <====

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3 years ago

Can anyone help me with my work? Ill give credit to those who do. I'll just put my z00m contact below and add me so we can work

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Step-by-step explanation:

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3 years ago

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Find a solution to the linear equation y=6x−18 by filling in the boxes with a valid value of x and y.

emmainna [20.7K]

Answer:

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Step-by-step explanation:

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3 years ago

Jasmine has 8 packs of candle wax to make scented candles. Each pack contains 14 oz of wax. Jasmine uses 7 oz to make one candle

Vera_Pavlovna [14]

16 candles. 14 multiplied by 8 equals 112. 112 divided by 7 equals 16.

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3 years ago

One vegetable warehouse had 210 tons of potatoes, another one had 180 tons. 90 tons of potatoes were delivered to the first and

kow [346]

Answer:

The number of days in which the amount in warehouse #2 is 1.2 greater than warehouse #1 is 6 days.

Step-by-step explanation:

Let

x: number of days

y: amount of potatoes

We can express the amount of potatoes in each warehouse using linear equations:

Warehouse #1: $y_1 = 90x+210$

Warehouse #2: $y_2 = 120x+180$

We need to find the value of x when $1.2*y_{1} =y_{2}$

Substituting the expressions for y1 and y2 in $1.2*y_{1} =y_{2}$ :

$1.2*(90x+210) =120x+180$

Applying distributive law:

$108x+252 =120x+180$

Solving the equation by subtracting 108x and 180 on both sides:

$108x+252-108x-180 =120x+180-108x-180$

$252-180 =120x-108x$

$72 =12x$

Now we divide by 12 on both sides:

$\frac{72}{12} =\frac{12x}{12}\\6=x\\x=6$

Therefore, the number of days in which the amount in warehouse #2 is 1.2 greater than warehouse #1 is 6 days.

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3 years ago