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laiz [17]
3 years ago
7

Help with my worksheet please

Mathematics
1 answer:
Kobotan [32]3 years ago
3 0

Answer:

1. 12/36

2. 4/5

3. 1/4

4. 9/24

5. 2/5

6. 20/50

7. 5/6

8. 2/4

9. 12/24

10. 10/60

11. 8/12

12.18/27

13. 3/9

14. 10/12

15. 4/8

16. 1/4

17. 5/15

18. 6/30

19. 2/3

20. 14/21

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What percentage of the students still receive an allowance
Mariana [72]

Answer:

I most likely think it is approximately 19%

Step-by-step explanation:

Assuming you mean still receive an allowance even though they dont do chores:

Ok In all the total number of students is 21. Out of those 21, 4 still receive an allowance even though they dont do chores. This is 4/21. Now all we have to do is convert 4/21 into a percentage. To do this we have to divide 100 by 21, then times 4 by that number:

100 / 21 = >> approximately 4.76

Now 4 times 4.76 :

4 * 4.76 = >>> approximately 19.04 % . We round it to 19%.


So the answer is 19%.

7 0
3 years ago
12 is 90% of what number?<br><br><br> with steps
a_sh-v [17]

Answer:

<h3><u>Let's</u><u> </u><u>understand the concept</u><u>:</u><u>-</u></h3>
  • Here 12 is 90% of a number.
  • So we can say that 90% of That number is 12 .
  • In this way we can get the the number
<h3><u>Solution</u><u>:</u><u>-</u></h3>

Let,

the number=x

<h3>According to the question ,</h3>

{:}\longrightarrow\sf 90\% \:of \;x=12

  • We know 90%=90/100
  • so add it

{:}\longrightarrow\sf {\dfrac {90}{100}}\times x=12

{:}\longrightarrow\sf {\dfrac {90x}{100}}=12

  • Now use cross multiplication method

{:}\longrightarrow\sf 90x=12\times 100

{:}\longrightarrow\sf 90x=1200

  • Now interchange sides .

{:}\longrightarrow\sf x={\dfrac {1200}{90}}

{:}\longrightarrow\sf x={\dfrac {200}{15}}

  • Answer will come in decimals so we take approximate value.

{:}\longrightarrow\sf x=13.3

{:}\longrightarrow\sf x=approximately \:13

\thereforeThe number is 13.

6 0
3 years ago
Solve the equation f/6= 2.5
dezoksy [38]

Answer:

f=15

Step-by-step explanation:

f/6=2.5

f=2.5*6

f=15

3 0
3 years ago
Line segment XY is a directed line segment beginning at point X(9, 2) and ending at point Y(-6, 2). Find the point Z on the line
lozanna [386]

Answer:

(-\frac{3}{8},2)

Step-by-step explanation:

Point Z divides XY into a 5:3 ratio, so Z is 5/3 of the way from X to Y.  That ratio is k, found by writing the numerator of the ratio (5) over the sum of the numerator and the denominator (5 + 3 = 8).  Our k value is 5/8.  Now we will find the rise and run values which is the slope of this line segment:

m=\frac{2-2}{-6-9} =\frac{0}{-15}

Coordinates are found in this formula:

Z(x,y)=(x_{1}+k(run),y_{1} +k(rise))

Filling that in:

Z(x,y)=(9+\frac{5}{8}(-15),2+\frac{5}{8}(0))

which simplifies to

Z(x,y)=(9-\frac{75}{8},2+0)

which gives us the final coordinates of Z to be Z(x,y)=(-\frac{3}{8},2)

7 0
3 years ago
What’s the area of this figure
kvasek [131]

Answer:

743.25m^2

Step-by-step explanation:

Area of triangle = 1/2bh

= 1/2 x 30 x 26

= 390

Area of semi circle = 1/2 πr^2

= 1/ 2 x 3.14 x 15 x15

=353.25m^2

= 390 + 353.25

= 743.25m^2

8 0
3 years ago
Read 2 more answers
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