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aniked [119]
3 years ago
13

A carpenter uses 12 nails for each board. If there are 48 nails in a pound, how many pounds would be used for 100 boards?

Mathematics
1 answer:
erica [24]3 years ago
3 0
There would be 25 pounds of nails.
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Simplify the algebraic expression (4b5 - 7) + (12b5 - 1)
ioda

Answer:16b square root of 5 -8

Step-by-step explanation:

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What’s the answer to this question
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The graph shows the amount of water that remains in a barrel after it begins to leak. The variable x represents the number of da
vivado [14]

A = ( 15 , 15 )

B = ( 6 , 33 )

slope =  \frac{y(b) - y(a)}{x(b) - x(a)} \\

slope =  \frac{33 - 15}{ 6 - 15} \\

slope =  \frac{18}{ - 9} \\

slope =  - 2

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7 0
3 years ago
Whoever helps me is my saviour! I need this in by tomorrow!
Alenkasestr [34]

Answer:

1) \frac{7}{8}+\frac{2}{5}=\frac{7\times5+2\times8}{40}=\frac{35+16}{40}=\frac{51}{40}.

2) 2\frac{1}{3}\times \frac{1}{4}=\frac{7}{3}\times\frac{1}{4}=\frac{7}{12}

hence, answer is 7/12.

3) We have to divide £72 in the ratio 2:3:1

the total of the ratio is=2+3+1=6

so on dividing 72 into 6 parts we have 72/6=12

First '2' parts=2×12=24

second '3' part=3×12=36

last '1' part=1×12=12

so dividing £72 in the ratio 2:3:1 is: £24,£36 and £12

4) 39 people out of 65 have blonde hair.

Number of people who do not have blonde hair=65-39=26

percentage people who do not have blonde hair is given by:

=\frac{26}{65}\times100\\ \\=40%

Hence, percentage people who do not have blonde hair is 40%

5) 20% of 90= (20/100)×90

                       =18

Hence, 20% of 90 is 18.

6) Factorise

  2x^2+18x^3=2x^2(1+9x)\\\\2x^2+18x^3=18x^2(x+\frac{1}{9})

7) Expand

(y-8)(y-6)=y(y-8)-6(y-8)=y^2-8y-6y+48\\\\(y-8)(y-6)=y^2-14y+48

8)

x^2+4x+3=x^2+x+3x+3=x(x+1)+3(x+1)=(x+3)(x+1).

9)

y^{0}=1

10)

0.0342=3.42\times10^{-2}

11) x= -4 y=3

and z=4 x-y^3

z=4×(-4)-3^3

z= -43

12) y+2x=x-2\\\\2x-x=-y-2\\\\x=-y-2

13) 8-7x=22\\\\7x=8-22\\\\7x=-14\\\\x=-2

Hence x= -2

14) 5,10,15,20,....a_{1}=5=5\times1 , a_{2}=10=5\times2 , a_{3}=15=5\times3,........,a_{n}=5n=5\timesn

Hence,  nth term is 5n.

15) (63×128)/32.9=245.106.

16) 938×21=19698.




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Write down the next two terms of the number pattern 2,5,8,11,14 <br>​
valkas [14]

Answer:

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Step-by-step explanation:

Write down the next two terms of the number pattern 2, 5, 8, 11, 14

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2 + 3 = 5

5 + 3 = 8

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14 + 3 = 17

17 + 3 = 20

Hope this helps!

8 0
2 years ago
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