MATHEMATICS MIDDLE SCHOOL

The cost of a pizza varies directly with thelength of the diameter. If a pizza with a
12-inch diameter costs $8.64, how much
should a pizza with a 16-inch diameter cost?

Answers

Answer 1

Answer:

Answer: A 16 inch pizza is $11.52

Step-by-step explanation:

$8.64 / 12 = $0.72

$0.72 x 16 = $11.52

Take the amount ($8.64) and divide it by 12 (for the 12 inch pizza) and you get $0.72 for every inch of the pizza.

Then take $0.72 and times it by 16 (for the 16 inch pizza) and you get $11.52 and there is your answer.

Answer 2

Answer:

Final answer:

Direct proportionality is used here to find the cost of a 16-inch pizza. Each inch of diameter costs $0.72, so a 16-inch pizza will cost $11.52.

Explanation:

The cost of a pizza in this instance is directly proportional to its diameter. Whenever such a situation arises, we use the concept of 'ratios' to determine the unknown value. In this particular question, the ratio of cost to diameter is the same for both pizzas.

The pizza with a 12-inch diameter costs $8.64, implying that every inch of diameter costs $8.64/12, or $0.72. If a 16-inch pizza is bought, the cost would then be 16 * 0.72, or $11.52.

Learn more about Direct Proportion here:

brainly.com/question/13742765

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Does one dozen means 12

Answers

Yes. Exactly. "One dozen" means twelve.

Yes 12 equals 1 dozen

Evaluate the expression, using the given value of the variable. 2 – 8x + 3x when x = 5 A. –53 B. –23 C. –15 D. 57

Answers

$2- 8x + 3x =2-5x \n \nx=5 \n \n2-5x = 2-5\cdot 5=2-25=-23\n \nAnswer : \ B. \ \ \ -23$

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4:2=20:___
whats the answer

Answers

4 times 5 is 20 and 2 times 5 is ten so it is 20:10

4:2 = 20:

4 * 5 = 20

2 * 5 = 10

the answer is 10. you multiply both numbers by 5. think of it like a fraction

What is the slope called if zero is on the numerator or top of the fraction?

Answers

Slope does not exist. A zero in the numerator means you have a horizontal line.

Lisa is standing on a dock beside a lake. She drops a rock from her hand into the lake. After the rock hits the surface of the lake, the rock's distance from the lake's surface changes at a rate of −6 inches per second. If Lisa holds her hand 4 feet above the lake's surface, how far from Lisa's hand is the rock 6 seconds after it hits the surface?