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Vladimir [108]
4 years ago
6

Two things: first, who invented the calculator? Second, just wanted to let everyone know that I'm online. Can help with a wide v

ariety of things, but when it comes to math, I can only help with algebra 1 and simple geometry and below (pre algebra, 7th grade math, 6th grade math, 5th grade math, etc.) I'm also great most other subjects
Mathematics
2 answers:
atroni [7]4 years ago
7 0
Hi there!

The first calculator that could add and subtract numbers was invented by Blaise Pascal in 1642.

Hope this helps!
denis23 [38]4 years ago
4 0
Blaise Pascal invented the calculator
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Solve for y hdgkgsydkydutskgxtisit
Feliz [49]

You said  X = (5y+1) / (y-2)

Multiply each side by (y-2):

X(y-2) = (5y+1)

Eliminate parentheses:

Xy - 2X = 5y + 1

Add  2X  to each side:

Xy = 5y + 1 + 2X

Subtract  5y  from each side:

(X-5)y = 1 + 2X

Divide each side by  (X-5):

<em>y = (1+2X) / (X-5)  </em>

7 0
3 years ago
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1. What is the ratio of black to white squares? (1 mark)<br> I
kati45 [8]

im sure it would be 2:4. if it was to be simplified it would be 1:2

6 0
3 years ago
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A drawer contains black socks and white socks. 80% of the socks are white socks. A number generator simulates randomly selecting
Alina [70]

Answer;

The generator was not fair.

Explanation;

The number generator is not fair. This is because the correct percentage of black socks was not chosen at all.

7 0
3 years ago
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Help please this question is so hard!
Nitella [24]
So to solve this first you need to convert all the answers to decimals.
Site B 17/9 = 1.89 when you round up
Site D 4/3 = .75
Then look at all the numbers least to greatest.
D .75 m C 1.36 m A 1.60 m B 1.89 m
Answer D, C, A, B
6 0
3 years ago
How many 4' x 8' sheets of plywood are required to cover a floor that is 9 m by 16 m?
Xelga [282]
Assuming no border or waste, 9m by 16 m translates to 29.52' x 52.49'.
use 32/8=4 sheets of plywood to cover the width on the 8' side.
For the length, use 52/4=13 pieces on the 4' side.  
This gives a total of 4*13=52 sheets.
The extra 0.49' x 29.52 can be covered using the extra from the last four sheets for the width.

Check: 
Area to be covered: 29.52*52.49=1550 sq. ft.
Area of plywood supplied = 52*4'x8'= 1664 sq. ft, > 1550 sq.ft.
8 0
3 years ago
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