Answer:
215 history and 263 biology
Step-by-step explanation:
478 - 48 = 430. 430/2 = 215. 215 history textbooks. 215 + 48 = 263 biology textbooks
Answer:
V = 3π√7 cm³ ≈ 24.94 cm³
Step-by-step explanation:
The radius of the finished cone can be found from the circumference of the finished cone, which is 3/4 of the circumference of the original paper circle.
Ccone = (3/4)Ccircle = (3/4)(2π(4 cm)) = 6π cm
This is related to the cone radius (x) by ...
Ccone = 2πx = 6π cm
x = 3 cm . . . . . . . . . 3/4 of the circle's radius
The height of the cone is given by the Pythagorean theorem:
(4 cm)² = h² + x²
h² = (4 cm)² -(3 cm)² = (16 -9) cm²
h = √7 cm
Now, we can use the formula for the volume of a cone:
V = (1/3)πr²h
= (1/3)π(3 cm)²(√7 cm)
V = 3π√7 cm³ ≈ 24.94 cm³
the answer would be y=4x+17
The value of 2 in <em>2783</em> is <em>10</em> time the value of 2 in <em>7283</em>.
For light: Inverse Square Law
<span>
The signal is weaken by the inverse square of the
difference of distances this means that one over the square of the
difference. </span>
<span>
</span>
Therefore, 70000LY / 141 LY =496.45 and that
squared =246462.602 times less signal, or 1/246462.602.
2 For a circular telescope like the
Arecibo radio telescope that equals Pi times the radius squared. Sensitivity
of the telescope depends on its area.<span>
The new telescope needs 246462.60 times that area to have
enough sensitivity </span>
<span>
<span>(150 x 150 x Pi) = 70 685 sq m area for the Arecibo telescope
and that times 246462.60
= 1.74212 x 10^10</span></span>
<span><span>
</span></span>
What is the diameter of a circle with that area?
<span>
<span>1. Divide the area by Pi = 5.548156 x 10^9
2. Take the square root of the result to find the radius = 74485.94293</span></span>
3. Multiply by 2 to find the diameter =
<span>148971.886</span>
