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BlackZzzverrR [31]
3 years ago
11

Find the cosine of ZX.

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
8 0

Answer:

\cos(x)  =  \frac{ 65}{ \sqrt{ {65}^{2}  +  {72}^{2} } }  =  \frac{65}{97}

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What is the equation of the tangent line passing through the point (0, 3) of the graph of the function f(x) = x2 − 2x + 3?
Sergeeva-Olga [200]

Answer:

y = -2x + 3

Step-by-step explanation:

The given equation is:

f(x)=x^2-2x+3

First we need to find the slope of the tangent line. This can be done by finding the derivative of the given function.

f'(x)=2x-2

Slope of the tangent will be the value of the derivative at the given point. So the slope of tangent is:

f'(0)=2(0)-2=-2

Now we have slope of the tangent line and a point (0, 3) on the tangent. The point (0,3) is the y-intercept of the tangent line. So we can use slope-intercept form to directly write the equation of the line.

The slope intercept form of an equation is:

y = mx + c

where m is the slope and c is the y-intercept.

Using the values: m = -2 and c = 3, we get:

y = -2x + 3

This equation represents the tangent line

8 0
4 years ago
the class average on a math test was 84.5 and the standard deviation was 4.4. Find the z-score for a test score of 94
Nuetrik [128]
The z-score will be given by:
z=(x-μ)/σ
given that:
x=94
μ=mean=84.5
σ=standard deviation=4.4
thus
z=(94-84.5)/4.4
z=2.1591
8 0
3 years ago
The length is three times the height. The height is one inch less than the width. The volume is 108 cubic inches. Find the dimen
alexandr402 [8]

Answer:

3×9×4

Step-by-step explanation:

The volume for a box is b×h×w

With a bit of trial and error, you will quickly find out that the height and width, are small numbers.

When you try 3 for the height you will see that it works.

3×3=9 this is the length

the width is one inch more than the height so for

3×9×4=108

7 0
3 years ago
Which numbers are a distance of 1/2 unit from 3/5 on a number line
svp [43]

Answer:1/10

1/100

Step-by-step explanation:

8 0
3 years ago
Identify the features of the graph
Liono4ka [1.6K]

-is a positive parabola

-has two roots at x= 1 and x= 5

- has a y-intercept at y=5

- has a minimum at (3, -4)

- axis of symmetry is x=3

5 0
3 years ago
Read 2 more answers
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