If it takes a spell checker 33 minutes per 15 pages how long does it take for 65 pages

1 answer:

7 0

Find out how many minutes it takes to read 1 page;

33/15=2.2 minutes per page.

Knowing this, you can find out how long it takes for 65 pages;

2.2×65=143 minutes.

Hope I helped :)

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Find an equation of the circle that satisfies the given conditions.

hodyreva [135]

The equation of a circle:
$(x-h)^2+(y-k)^2=r^2$
(h,k) - the coordinates of the centre
r - the radius

The midpoint of the diameter is the centre of a circle.
The coordinates of the midpoint:
$(\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2})$
(x₁,y₁), (x₂,y₂) - the coordinates of endpoints

$P(-1,1) \\
x_1=-1 \\ y_1=1 \\ \\ Q(5,9) \\ x_2=5 \\ y_2=9 \\ \\
\frac{x_1+x_2}{2}=\frac{-1+5}{2}=\frac{4}{2}=2 \\ \frac{y_1+y_2}{2}=\frac{1+9}{2}=\frac{10}{2}=5$

The centre of the circle is (2,5).

The radius is the distance between an endpoint of the diameter and the centre.
The formula for distance:
$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$(-1,1) \\ x_1=-1 \\ y_1=1 \\ \\ (2,5) \\ x_2=2 \\ y_2=5 \\ \\ d=\sqrt{(2-(-1))^2+(5-1)^2}=\sqrt{3^2+4^2}=\sqrt{9+16}=\sqrt{25}=5$

The radius is 5.

$(x-2)^2+(y-5)^2=5^2 \\
\boxed{(x-2)^2+(y-5)^2=25}$

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Which expressions are equivalent to 5 12 ⋅ 5 8

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Answer: is (5^5)^4

Step-by-step explanation:

im inmiddle school but someone already answered this question befor trust me

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GREYUIT [131]

Step 1: Find common denominators

LCM of 2 and 4 = 4

2 3/4 - 1 2/4

Step 2: Subtract

2 - 1 = 1

3/4 - 2/4 = 1/4

Answer: 1 1/4

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Answer:

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Step-by-step explanation:

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