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2 years ago

Use a graphing calculator to solve the equation -3 cost= 1 in the interval from . Round to the nearest hundredth.

Mathematics

1 answer:

RSB [31]2 years ago

8 0

In place of t, or theta, I'm going to utilize x instead. So the equation is -3*cos(x) = 1. Get everything to one side and we have -3*cos(x)-1 = 0

Let f(x) = -3*cos(x)-1. The goal is to find the root of f(x) in the interval [0, 2pi]

I'm using the program GeoGebra to get the task done of finding the roots. In this case, there are 2 roots and they are marked by the points A and B in the attachment shown

A = (1.91, 0)
B = (4.37, 0)

So the two solutions for theta are
theta = 1.91 radians
theta = 4.37 radians

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8 and 1/4 + 3 and 5/6

k0ka [10]

Answer:

12 1/12

Step-by-step explanation: so, we have to make the bottom number the same as eachother or we will not be able to add effectively. So the first number that both 4 and 6 go into is 12, as you can see if we count by the numbers to get to the answer

4,8,12

6,12

So, now that we have that part figured out we would then have to multiply the top the same amount as we multiplied the bottom. So 1/4x3 and 5/6x2

So we would multiply both the top and the bottom the same amount.

1/4x3=3/12

5/6x2=10/12

So now that we have that figured out everything else is pretty straight forward.

We would add the whole numbers with eachother and the fractions with eachother.

8+3=11

3/12+10/12=13/12

so we can see that it would equal, 11 and 13/12 or 12 and 1/12

8 0

1 year ago

Pure acid is to be added to a 10% acid solution to obtain 72 L of a 20% acid solution.

Crank

Answer:

Step-by-step explanation:

because 10 is 1/2 of 20 and 72/2 = 36

8 0

3 years ago

This circle is centered at the origin, and the length of its radius is 2. What iS

Igoryamba

Answer:

Step-by-step explanation:

If the center of the circle is at the origin, the general formula for the circle is

x^2 + y^2 = r^2.

Since r = 2 units in this particular problem, the equation of the circle is:

x^2 + y^2 = 2^2, or x^2 + y^2 = 4

3 0

2 years ago

Absolute value<br>|4w-6|=-2

Andreyy89

• 4w -6 = -2
+6 +6
4w= 4
— —
4 4
w=1
• 4w - 6 = 2
+6 +6
4w =8
— —
4 4
w=2

3 0

3 years ago

What is algebra? What do you do with algebra?

tigry1 [53]

Algebra is a very important branch of math.

Algebra is a lot like arithmetic which means it follows all the rules of arithmetic, and it still uses the four main operations that arithmetic is built on.

In arithmetic, the only thing that was unknown was the answer to the problem. For example, 39 + 2 = 41. In algebra, we use a variable to represent the number. A variable is a letter that represents any number. The most common variable is "x".

6 0

3 years ago