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dsp73
2 years ago
10

Select the correct answer. What is 2 1/2 divided by 1/3? A. 3 1/2 B. 7 1/2 C. 7 1/6 D. 2/15

Mathematics
2 answers:
djyliett [7]2 years ago
6 0

Answer:

the answer is 7 and a half so it would be B

Tcecarenko [31]2 years ago
5 0
Hello,

The answer is:
7 1/2

Hope this helped :)
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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.




8 0
2 years ago
Read 2 more answers
Lisa has 6 hours of studying to do . If she divides her study time into 1/2-hour sessions , how many study sessions will she nee
Svetradugi [14.3K]

Answer:

12

Step-by-step explanation:

6 / .5 (same as 1/2)

or 6 X \frac{2}{1}   = 12

Remember when we divide by a fraction we do the following

Keep it (the first number stays the same)

Change it (convert from a division problem to a multiplication problem)

Flip it (flip the fraction that we are dividing by over - this is called a reciprocal)

8 0
3 years ago
Read 2 more answers
A store sells toys in bulk. It sells wooden blocks for $5 a pound and plastic bricks for $10
Veseljchak [2.6K]

9514 1404 393

Answer:

  • 6 # plastic bricks
  • 4 # wooden blocks

Step-by-step explanation:

Let p represent the number of pounds of plastic bricks in the mix. Then the number of pounds of wooden blocks is (10-p), and the total cost is ...

  10p +5(10-p) = 80

  5p = 30 . . . . . . . . . subtract 50

  p = 6 . . . . divide by 5; there are 6 pounds of plastic bricks in the mix

4 pounds of wooden blocks and 6 pounds of plastic bricks should be used to make a 10-lb mix worth $80.

5 0
2 years ago
tonya pays $300.each month to rent a office were she earns $25 per hour tutoring students. which equation repersants tonyas prof
Advocard [28]

Answer:

y=25x + 300

Step-by-step explanation:

6 0
2 years ago
The theoretical probability that Fadi selects a red straw out of a bag of straws is 0.30. Fadi draws out 150 straws. How many ti
hjlf

Answer:

5 times

Step-by-step explanation:

4 0
3 years ago
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