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erica [24]
3 years ago
8

Let t = 5. What is the value of 5t – 5? A. 0 B. 20 C. 45 D. 50

Mathematics
2 answers:
mafiozo [28]3 years ago
8 0
The answer is B......................
AlladinOne [14]3 years ago
7 0
The answer is B
5*5 = 25 
25-5 = 20
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3 years ago
Determine the equation of a circle whose diameter has the endpoints (-1, 2) and (7.
Viefleur [7K]

Answer:

(x - 3)^2 + (y + 1) = 25

Step-by-step explanation:

First find the midpoint of the diameter, because that represents the center of the circle.

                                                                     -1 + 7

The x-coordinate of the midpoint is xm = ---------- = 3

                                                                          2

                                                 2 - 4

and the y-coordinate is ym = ---------- = -1

                                                     2

And so the center of this circle is at (3, -1).

Use the Pythagorean Theorem to determine the square of the radius:

square of radius = 4^2 + (-3)^2 = 16 + 9 = 25

And so the equation of this circle is (x - 3)^2 + (y + 1) = 25

5 0
3 years ago
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The bakery owner will use both machines to glaze a total of doughnuts. She plans to start both machines at the same time. Based
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Step-by-step explanation:

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3 years ago
The dimensions of a room are 4.2m by 6m. On a plan, the longer side is equal to 4 cm. What is the length of the shorter side on
Fiesta28 [93]

Answer: Length of shorter side is 2.8 cm.

Explanation:

Since we have given that

Dimensions of a room are given by

4.2\ m\times 6\ m

On a plan,  the longer side = 4 cm

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So,

\frac{4.2}{6}=\frac{x}{4}\\\\4.2\times 4=6x\\\\16.8=6x\\\\\frac{16.8}{6}=x\\\\2.8=x

So, length of shorter side is 2.8 cm.

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3 years ago
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A birthday cake is cut into 24 pieces.There are 6 pieces left after the party.What percentage of the cake was eaten?
Alik [6]

Answer:

75%

Step-by-step explanation:

so there's 24 pieces and 6 are left so 18 were eaten which means

\frac{18}{24}

is you percentage because 18 divided by 24 is .75 then multiply by 100 to change it to percent so .75 times 100 is 75%

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