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belka [17]
3 years ago
14

Find the exact value of the expression cos-1(1/2)

Mathematics
1 answer:
olga55 [171]3 years ago
8 0

Answer:

60

Step-by-step explanation:

Plug it into the calculator

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Which equation represents inverse variation between x and y?
postnew [5]

Inverse variation means

When the value of x increases the value of y decreases.

When the value of x decreases the value of y increases.

So for an inverse variation we have the expression

y=\frac{k}{x}

or

x=\frac{k}{y}

The expression which represents this condition is

x=-\frac{15z}{y}

Hence option b) or the second option is the right answer.

6 0
4 years ago
Work out the value of x :)
Nataliya [291]

Answer:

x=67.5

Step-by-step explanation:

A full circle is 360°, and the right angle is 90°. The rest of the angle is 270°, or 4x (from 3x+x).

4x = 270

<u>x=67.5</u>

3 0
3 years ago
By visual inspection, determine the best-fitting regression model for the
NNADVOKAT [17]
C.quadratic. Based on the pattern it is quadratic.
4 0
4 years ago
The function g is given in three equivalent forms.<br> Which form most quickly reveals the vertex?
Nadusha1986 [10]

Answer:

Option A. g(x)= \frac{1}{2}(x-8)^2-8

Step-by-step explanation:

<u><em>The complete question is</em></u>

The function g is given in three equivalent forms.

Which form most quickly reveals the vertex?

A)g(x)= 1/2(x-8)^2-8

B)g(x)= 1/2(x-12)(x-4)

C)g(x)= 1/2x^2-8x+24

we know that

The equation of a quadratic function in vertex form is equal to

y=a(x-h)^2+k

where

a is the leading coefficient

(h,k) is the vertex of the function

In this problem, the option A is the equation of the function in vertex form

we have

g(x)= \frac{1}{2}(x-8)^2-8

where the vertex is the point (8,-8)

therefore

Option A

8 0
3 years ago
What is 7 over 20 as a percentage
expeople1 [14]
7/20) * 100%
= 35%
= 0.3
4 0
3 years ago
Read 2 more answers
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