3 years ago

Which graphs form a function? (Choose all that apply)

1 answer:

3 0

A and D
To find it out on a graph is the line test
Draw a line going up and down and if it only passes the line once it’s a function but if it touches the line more then once it is not

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What is the diameter of a circle that has an area of 452.16 mm 2

Papessa [141]

C = pi * d
452.16 = 3.14 * d
Divide both sides by 3.14
144 = d

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3 years ago

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Two solid spheres have surface areas of 1441 cm? and 2567 cm² respectively. They are melted and recast to form a larger sphere.

Tju [1.3M]

Surface area of small sphere = 1441cm^2

Surface area of bigger sphere = 2567cm^2

Surface area of largest sphere = 1441 + 2567

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2 years ago

Let x represent the amount of frozen yogurt (in hundreds of gallons) sold by the G&T restaurant on any day during the summer

musickatia [10]

Answer:

a) The probability of selling less than 100 gallons (x≤1) is P=0.16.

b) The mean number of gallons is M=80 gallons.

Step-by-step explanation:

The probability of selling x, in hundred of gallons, on any day during the summer is y(x)=0.32x, in a range for x from [0;2.5].

The probability of selling less than 100 gallons (x≤1) is then:

$P(x\leq1)=\int_0^{100}0.32x\cdot dx\\\\P(x\leq1)=0.16(x_b^2-x_a^2)\\\\P(x\leq1)=0.16(1^2-0^2)=0.16$

The mean number of gallons can be calculated as:

$M=\int_0^{2.5}(y(x)/x)\cdot dx=\int_0^{2.5}(0.32)\cdot dx\\\\M=0.32(x_b-x_a)=0.32(2.5-0)=0.32*2.5=0.8$

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2 years ago

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makvit [3.9K]

Answer:

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1 year ago

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mamaluj [8]

Negative. A negative number times a positive number is equal to a negative number. X multiplied by Y is a positive.

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2 years ago