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4 years ago

What % of 630 is 189

2 answers:

4 0

To find your answer, set up a proportion. 189 over 630 is equal to x over 100. Multiply 189 by 100 to get 18,900, and then divide 18,900 by 630 to get 30. 30% is your final answer

8090 [49]4 years ago

3 0

Answer:

I'm pretty sure its 30.

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A student said the volume of a cylinder with a 7-inch diameter is two times the volume of a cylinder with

prohojiy [21]

Answer:

When you find the volume of the cylinder you square instead which isn't equal to multiplying so the answer will be more then doubled.

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

You are given the parametric equations x=2cos(θ),y=sin(2θ). (a) List all of the points (x,y) where the tangent line is horizonta

vladimir1956 [14]

Answer:

The solutions listed from the smallest to the greatest are:

x: $-\sqrt{2}$ $-\sqrt{2}$ $\sqrt{2}$ $\sqrt{2}$

y: -1 1 -1 1

Step-by-step explanation:

The slope of the tangent line at a point of the curve is:

$m = \frac{\frac{dy}{dt} }{\frac{dx}{dt} }$

$m = -\frac{\cos 2\theta}{\sin \theta}$

The tangent line is horizontal when $m = 0$ . Then:

$\cos 2\theta = 0$

$2\theta = \cos^{-1}0$

$\theta = \frac{1}{2}\cdot \cos^{-1} 0$

$\theta = \frac{1}{2}\cdot \left(\frac{\pi}{2}+i\cdot \pi \right)$ , for all $i \in \mathbb{N}_{O}$

$\theta = \frac{\pi}{4} + i\cdot \frac{\pi}{2}$ , for all $i \in \mathbb{N}_{O}$

The first four solutions are:

x: $\sqrt{2}$ $-\sqrt{2}$ $-\sqrt{2}$ $\sqrt{2}$

y: 1 -1 1 -1

The solutions listed from the smallest to the greatest are:

x: $-\sqrt{2}$ $-\sqrt{2}$ $\sqrt{2}$ $\sqrt{2}$

y: -1 1 -1 1

6 0

3 years ago

60-g=25. A.true B.false C.open D.None of the above

Goshia [24]

Answer:

true g = 35

just plug 35 in for g 60-35=25

Step-by-step explanation:

8 0

3 years ago

F(x) = 3(x + 2)2 – 6

maksim [4K]

F(x)= 3 (x^2 + 4x +4) - 6
= 3x^2 + 12x +12 -6
= 3x^2 + 12x + 6

4 0

3 years ago

Find the length of each side

Olin [163]

The triangle is equilateral, so all sides are equal.

4x = 3x + 2

x = 2

4x = 8

All sides measure 8 units.

5 0

3 years ago