Ask question

Ask question

All categories

mrs_skeptik [129]

3 years ago

9

Lisa is loading 75 chairs into a truck. If H represents the number of chairs that she can carry in one load, which expresion rep

resents the total number of loads needed to move all the chairs?

2 answers:

cricket20 [7]3 years ago

6 0

75 divided by h because if she can carry 75 chairs in one load, you will need to divide to figure out how many loads she has to complete so all the chairs can be brought in.

RSB [31]3 years ago

4 0

75 divided by h is the answer

You might be interested in

Complete the statement. Round to the nearest hundredth if necessary.<br><br> 40 oz = lb

lora16 [44]

40 oz= 2.5 lb

One pound (lb) =16 Ounces
40/16=2.5

8 0

3 years ago

Read 2 more answers

It takes Sue, Jeff and Todd 4 hours to paint a room together. If it takes Sue 10 hours by herself and Jeff 12 hours by himself,

diamong [38]

The number of time it would take Todd to paint the room alone is 15 hours.

Let the Todd's time be t.

<u>Given the following data:</u>

Combine time = 4 hours

Sue's time = 10 hours

Jeff's time = 12 hours

To calculate the number of time it would take Todd to paint the room alone:

How to solve a word problem:

In order to solve this exercise, we would first of all calculate their individual rate and combined rate respectively. Finally, we would add their individual rates together and equate it to the combined rate.

<u>For </u><u>Sue</u><u>:</u>

$Rate = \frac{1}{10} \;work/hr$

<u>For </u><u>Jeff</u><u>:</u>

$Rate = \frac{1}{12} \;work/hr$

<u>For </u><u>Todd</u><u>:</u>

$Rate = \frac{1}{t} \;work/hr$

<u>Combined rate:</u>

$Rate = \frac{1}{4} \;work/hr$

Adding the individual rates, we have:

$\frac{1}{10} +\frac{1}{12} +\frac{1}{t} =\frac{1}{4} \\
\\
$

Multiplying all through by 120t, we have:

$12t+10t+120=30t\\
\\
22t+120=30t\\
\\
120=30t-22t\\
\\
120=8t\\
\\
t=\frac{120}{8}$

t = 15 hours.

Read more on word problems here: brainly.com/question/13170908

5 0

3 years ago

A triangle is graphed in the coordinate plane. The vertices of the triangle have coordinates (–5, 2), (7, 2), and (7, –3).

klemol [59]

You will have to use a ruler for this on the chart

8 0

3 years ago

Read 2 more answers

Show that every triangle formed by the coordinate axes and a tangent line to y = 1/x ( for x > 0)

vfiekz [6]

Answer:

Step-by-step explanation:

given a point $(x_0,y_0)$ the equation of a line with slope m that passes through the given point is

$y-y_0 = m(x-x_0)$ or equivalently

$y = mx+(y_0-mx_0)$ .

Recall that a line of the form $y=mx+b$ , the y intercept is b and the x intercept is $\frac{-b}{m}$ .

So, in our case, the y intercept is $(y_0-mx_0)$ and the x intercept is $\frac{mx_0-y_0}{m}$ .

In our case, we know that the line is tangent to the graph of 1/x. So consider a point over the graph $(x_0,\frac{1}{x_0})$ . Which means that $y_0=\frac{1}{x_0}$

The slope of the tangent line is given by the derivative of the function evaluated at $x_0$ . Using the properties of derivatives, we get

$y' = \frac{-1}{x^2}$ . So evaluated at $x_0$ we get $m = \frac{-1}{x_0^2}$

Replacing the values in our previous findings we get that the y intercept is

$(y_0-mx_0) = (\frac{1}{x_0}-(\frac{-1}{x_0^2}x_0)) = \frac{2}{x_0}$

The x intercept is

$\frac{mx_0-y_0}{m} = \frac{\frac{-1}{x_0^2}x_0-\frac{1}{x_0}}{\frac{-1}{x_0^2}} = 2x_0$

The triangle in consideration has height $\frac{2}{x_0}$ and base $2x_0$ . So the area is

$\frac{1}{2}\frac{2}{x_0}\cdot 2x_0=2$

So regardless of the point we take on the graph, the area of the triangle is always 2.

6 0

3 years ago

Evaluate each geometric<br> series described<br> 3 + 6 +12 + 24 n=7

baherus [9]

Process:

1. 21+24n= 7
2. 24n= 7 - 21
3. 24n= -14

Answ: n= -7/12

3 0

3 years ago