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kvasek [131]
2 years ago
12

Sean sold half of his comics to buy a game. Later, he bought 7 new comics. How many did he start with if he now has 20:

Mathematics
1 answer:
Solnce55 [7]2 years ago
4 0

Answer:

26

Step-by-step explanation:

20-7= 13 (half his comics) 13+13=26

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The formula for the area of a circle is A = r 2. Classify the area of a circle with a radius of 0.75 centimeters as either ratio
OlgaM077 [116]
First:The area of a circle is πr squared. Not r2
Second. The area of the circle HAS to be irrational because π is an irrational number. The answer would be, if solved for a circle with the radius of 0.75, the area would be 0.5625π, which is irrational. 
6 0
3 years ago
What is the equation of the line parallel to the line with the equation −x+3y=−3
mezya [45]

Answer:

y = 1/3x - 19/3

Step-by-step explanation:

3y = x -3

y = 1/3x -3

Slope = 1/3

Point= (1,-6)

y-intercept = -6 - (1/3)(1) = -6 - 1/3 = -19/3

5 0
2 years ago
What is the length of the hypotenuse? If necessary, round to the nearest tenth.
PolarNik [594]

Answer:

hypotenuse = 25 yards

Step-by-step explanation:

Use pythagorean theorem

c^2 = a^2 + b^2      where c = hypotenuse and  'a' and 'b' are the legs

hyp^2 = 24^2  + 7^2

hyp^2 = 625

hyp = 25 yd

7 0
2 years ago
What time is 5 3/4 hours after 11:32 am?
Norma-Jean [14]

Answer:

5:17pm

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Y = 3 sin2x, y = 0, 0 ≤ x ≤ π; about the x−axis
Dominik [7]
I assume you're revolving the region with those bounds about the x-axis, and supposed to find the volume.

Via the disk method,

\displaystyle\pi\int_0^\pi(3\sin2x)^2\,\mathrm dx=9\pi\int_0^\pi\sin^22x\,\mathrm dx

Recall the half-angle identity for sine:

\sin^2t=\dfrac{1-\cos2t}2
\implies\displaystyle\frac{9\pi}2\int_0^\pi(1-\cos4x)\,\mathrm dx
=\displaystyle\frac{9\pi}2\left(x-\frac14\sin4x\right)\bigg|_{x=0}^{x=\pi}
=\dfrac{9\pi^2}2
8 0
3 years ago
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