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3 years ago

What values from the set {10, 11, 12, 13} that makes the equation 2(× - 5) = 12 true is, , 10, 11, 12 or 13?

Mathematics

1 answer:

olasank [31]3 years ago

4 0

Answer: The value necessary from the set to make the equation true was 11.

Step-by-step explanation:

Process of elimination:

1. 2([10]-5)

= 2(5)

= 10, not 12.

2. 2([11]-5)

= 2(6)

= 12; the answer we need.

We substituted x for 11, and then the equation worked; so therefore the value we needed from the set was 11.

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Given that g(x)=3x^2 -4x+3, find each of the following. <br><br>PICTURE DOWN BELOW!!!

victus00 [196]

Answer:

see explanation

Step-by-step explanation:

To evaluate the expression for the given values.

Substitute the given values for x into g(x)

g(0) = 3(0)² - 4(0) + 3 = 0 - 0 + 3 = 3

g(- 1) = 3(- 1)² - 4(- 1) + 3 = 3 + 4 + 3 = 10

g(2) = 3(2)² - 4(2) + 3 = 12 - 8 + 3 = 7

g(- x) = 3(- x)² - 4(- x) + 3 = 3x² + 4x + 3

g(1 - t)

= 3(1 - t)² - 4(1 - t) + 3

= 3(1 - 2t + t²) - 4 + 4t + 3

= 3 - 6t + 3t² - 4 + 4t + 3

= 3t² - 2t + 2

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4 years ago

Which number is greater? (Order of decimals

White raven [17]

Answer:

67.98 is greater than 67.89

Step-by-step explanation:

8 0

3 years ago

Richard spent $30 at a store. He spent $14 on a book and bought some CD's at $4 each. How

trapecia [35]

Answer:

Step-by-step explanation:

30 minus 14 = 16 and 16 divided by 4 is 4. so the answer is 4

8 0

3 years ago

HELP ASAP!!!!! PLEASE

Ainat [17]

Answer:

Missing Truck Value=6

Missing Car Value=45

Step-by-step explanation:

Since the ratio of trucks to cars is 2:3, you do 3 times 3 equals 9. Since all 3 ratios needed to be equal, we have to do 2 times 3 which is 6. That is how you get the truck value. We do the same to get the car value. 6 times 5 is equal to 30, so we do 9 times 5 too. That gives you 45.

6 0

3 years ago

On a certain hot summer's day, 643 people used the public swimming pool. The daily prices are $1.50 for children and $2.00 for

lilavasa [31]

249 children and 394 adults swam at the public pool.

Step-by-step explanation:

Number of people swam at pool = 643

Receipts = $1161.50

Cost for one child = $1.50

Cost for one adult = $2.00

Let,

x be the number of children

y be the number of adults

According to given statement;

x+y=643 Eqn 1

1.50x+2.00y = 1161.50 Eqn 2

Multiplying Eqn 1 by 2

$2(x+y=643)\\2x+2y=1286\ \ \ Eqn\ 3\\$

Subtracting Eqn 2 from Eqn 3

$(2x+2y)-(1.50x+2.00y)=1286-1161.50\\2x+2y-1.50x-2.00y=124.50\\0.5x=124.50$

Dividing both sides by 0.5

$\frac{0.5x}{0.5}=\frac{124.50}{0.5}\\x=249$

Putting x=249 in Eqn 1

$249+y=643\\y=643-249\\y=394$

249 children and 394 adults swam at the public pool.

Keywords: linear equation, subtraction

Learn more about linear equations at:

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4 0

3 years ago