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ivanzaharov [21]
3 years ago
10

Jim works at a furniture shop. He can assemble 88 chairs in 22 hours. If he can assemble c chairs in 1 hour, identify the equati

on that can be used to find the value of c.
22 x c = 88
88 x c = 22
88 + c = 22
88= c + 22
22 + 88 = c
Mathematics
2 answers:
LekaFEV [45]3 years ago
8 0
The answer would be:

22 * c = 88

If you wanted to know at all, c = 4

I hope this helps you! If it does, please rate Brainliest :D
BigorU [14]3 years ago
7 0
Answer: first option 22×c = 88

Justification:


This problem may be solved by setting a proportion.


A proportion is the equality of two ratios.


Here the first ratio is the number of chairs that Jim can assemble in 22 hours:


  88 chairs
--------------  
22 hours.

The second ratio is the number of chairs (c) that he can assemble in 1 hour:


   c
--------
1 hour

Then, when you equal both ratios you get the proportion:


88 chairs         c
------------- = --------
22 hours      1 hour


Solving for c, you get: c × 22 = 88, wich is the first option.

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Doris takes a survey of her class and finds that 2 of the 20 students in class are left-handed.
djyliett [7]
Hey there, Alex!


She would expect 55 of them to be left handed.


Work: 550 / 20 = 27.5

27.5 x 2 = 55


Hope I was able to help!
6 0
3 years ago
Evaluate each expression <br><br> -5x8+12
Oksanka [162]
-28 because using PEMDAS you would do -5x8 which =-40 plus 12 is -28
4 0
3 years ago
Show that the points (0.-1).(2, 1).(0.3) and (-2, 1) are the vertices of a square ABCD.
Inessa05 [86]

The diagram is below

  • A = (0,-1)
  • B = (2,1)
  • C = (0,3)
  • D = (-2,1)

Let's find the distance from A to B using the distance formula.

d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(0-2)^2 + (-1-1)^2}\\\\d = \sqrt{(-2)^2 + (-2)^2}\\\\d = \sqrt{4 + 4}\\\\d = \sqrt{8}\\\\d \approx 2.828\\\\

The distance from A to B is exactly \sqrt{8} units or approximately 2.828 units. This is the length of side AB.

Through very similar steps, you should find that the other side lengths of BC, CD and AD are all the same.

Since AB = BC = CD = AD, this means we have a rhombus. Recall a rhombus is any quadrilateral with all four sides the same length.

-----------------------------

Let's find the slope of line AB

m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\m = \frac{1 - (-1)}{2 - 0}\\\\m = \frac{1 + 1}{2 - 0}\\\\m = \frac{2}{2}\\\\m = 1\\\\

Line AB has a slope of 1.

Through similar steps, you should find the slope of line BC is -1.

Rule: Whenever two slopes multiply to -1, then their corresponding lines are perpendicular.

Based on that rule, lines AB and BC are perpendicular. This means they meet up at a right angle (aka 90 degree angle).

You should find that line CD has a slope of 1, so BC and CD are perpendicular. Lastly, line AD has a slope of -1. So all the slopes mentioned are either +1 or -1. The slopes alternate as you move around the figure. This all shows that any two adjacent sides meet at a 90 degree angle.

Therefore, this figure is a rectangle. Any rectangle has all four angles of 90 degrees.

-----------------------------

The first section showed that we have a rhombus. The second section afterward showed that we also have a rectangle. The combination of a rhombus and a rectangle at the same time leads to a square.

Therefore, quadrilateral ABCD is a square.

5 0
3 years ago
Help will mark you Brainliest​
Ymorist [56]

Answer:

6.6 inches

Step-by-step explanation:

8 0
3 years ago
Keith used the following steps to find the inverse off, but he thinks he made an error
Sholpan [36]

Answer:

Option D In step 4 Keith should have subtracted 5 from each side

Step-by-step explanation:

step 1

we have

f(x)=7x+5 -----> given

step 1 is correct

step 2

Change f(x) to y

y=7x+5

so

step 2 is correct

step 3

Exchange x for y and y for x

x=7y+5

so

step 3 is correct

step 4

Subtract 5 each side

x-5=7y+5-5

x-5=7y

<u><em>step 4 is not correct</em></u>

step 5

Divide by 7 each side

(x-5)/7=y

step 6

Change y to g(x)

(x-5)/7=g(x)

step 7

switch sides of the equation

g(x)=(x-5)/7

therefore

In step 4 Keith should have subtracted 5 from each side

5 0
3 years ago
Read 2 more answers
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