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erma4kov [3.2K]

2 years ago

8

unit 1 chapter 1 gross income answersA portion of Donald Irwin’s time sheet is shown below. Determine the total number of hours

he worked for the week rounded to the nearest quarter hour.

1 answer:

statuscvo [17]2 years ago

7 0

Answer:

i need points

Step-by-step explanation:

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The equation of a circle is ( x - 3) 2 + ( y + 2) 2 = 25. The point (8, -2) is on the circle.

Shtirlitz [24]

Answer:

x =8 is the equation of the tangent.

Step-by-step explanation:

Here the equation of the given circle is: $(x-3)^{2} + (y+2)^{2} = 25$

Now, comparing it with the general equation of circle: $(x-h)^{2} + (y -k)^{2} = r^2$

we get the central coordinates (h,k) = (3,-2)

So, the slope of the line joining center and (8, -2) = $\frac{-2 -(-2)}{8-3} = \frac{0}{5} = 0$

Since the slope of line = 0, line is parallel to x axis.

Now, as tangent and the line is perpendicular to each other

⇒Slope of the tangent = -1/ slope of the line = $\frac{-1}{0}$

Now, by point slope formula: the equation of the tangent is

(y-y0) = m (x-x0)

or, $(y +2) = \frac{-1}{0} (x -8)$

or x =8 is the equation of the tangent.

8 0

3 years ago

An empty truck. A crate of apples was then loaded onto the same truck. If the total weight load

xxTIMURxx [149]

Da answer is 21,000 Pounds Couse 9 + 10 = 21

8 0

3 years ago

The line l passes through the point P = (1,-1,1) and has direction vector d = [2,3,1]. Determine whether l and the plane 4x-y+5z

suter [353]

Hello :
the normal vector of the plane is : d' = [4,-1,5]...(vector perpendicular to the plane)<span>
d </span><span>⊥ d' because : (4)(2)+(-1)(3)+(5)(1)=0
</span>the line is perpendicular to the plane .

3 0

3 years ago

The school store sells binders for $5 and notebooks for $4. The store needs to sell $80 worth of these two items combined each w

lorasvet [3.4K]

Answer:

<h2>80=5x+4y</h2>

Step-by-step explanation:

Step one:

given

let binders be x

and notebooks be y

let the total sale be T

the cost of binder is $5 each

the cost of notebook is $4 each.

the total sales expected is $80

step two:

the linear model for the total sales is given as

T=x+y

using the given data, the situation can be represented linearly as

80=5x+4y

Therefore the linear expression for the total sale is 80=5x+4y

4 0

3 years ago

Read 2 more answers

- Write a system of equations in which one equation could be multiplied by-2 and the

iris [78.8K]

2x+5y=9

3x+7y=13

6x+15y=27

-6x-14y=-26

y=1

x=2

6 0

2 years ago