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2 years ago

The movie theatre is running a special for the

Mathematics

2 answers:

Artyom0805 [142]2 years ago

8 0

Answer:

12$

Step-by-step explanation:

20 - 8 = $12

Darina [25.2K]2 years ago

4 0

Answer:

Step-by-step explanation:

20 - 8 = 12 left over......

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At Edna's boutique, 14 customers wore a size large, and 48 customers wore a different size.What is the probability that a random

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2 years ago

Yassar has purchased a $30,000 car for his business. The car depreciates at 30%

fiasKO [112]

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Step-by-step explanation:

30% of 30000 is 9000, 30000-9000=21000 (1 year)

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2 years ago

Please help! ill give brainliest

anastassius [24]

Answer:

y=-6

Step-by-step explanation:

1. plug in the values, it will be y=4/3(-6) + 2

2. simplify

y=-24/3 + 2

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2 years ago

Solve this equation for x: 2x^2 + 12x - 7 = 0

zhannawk [14.2K]

Answer:

x=0.5355 or x=-6.5355

First step is to: Isolate the constant term by adding 7 to both sides

Step-by-step explanation:

We want to solve this equation: $2x^2 + 12x - 7 = 0$

On observation, the trinomial is not factorizable so we use the Completing the square method.

Step 1: Isolate the constant term by adding 7 to both sides

$2x^2 + 12x - 7+7 = 0+7\\2x^2 + 12x=7$

Step 2: Divide the equation all through by the coefficient of $x^2$ which is 2.

$x^2 + 6x=\frac{7}{2}$

Step 3: Divide the coefficient of x by 2, square it and add it to both sides.

Coefficient of x=6

Divided by 2=3

Square of 3= $3^2$

Therefore, we have:

$x^2 + 6x+3^2=\frac{7}{2}+3^2$

Step 4: Write the Left Hand side in the form $(x+k)^2$

$(x+3)^2=\frac{7}{2}+3^2\\(x+3)^2=12.5\\$

Step 5: Take the square root of both sides and solve for x

$x+3=\pm\sqrt{12.5}\\x=-3\pm \sqrt{12.5}\\x=-3+ \sqrt{12.5}, $ or $x= -3- \sqrt{12.5}\\$x=0.5355 or x=-6.5355$

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