MATHEMATICS HIGH SCHOOL

what percent of a) Rs 80 is Rs 20 ? please give answer step by step and clearly please it's urgent ​

Answers

Answer 1
Answer:

Answer:

16%

Step-by-step explanation:

80/100x  20/1 =  1600/100 cut0  n d16%a
Answer 2
Answer: i think its 16 percent

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Clare and Han have summer jobs stuffing envelopes for two different companies. Clare's earnings can be seen in the table.

Number of Envelopes Money in Dollars
400 40
900 90
Han earns $15 for every 300 envelopes he finishes.

a. Who would make more money stuffing 1500 envelopes?

How much more would they make? $ more

b. What is the rate of change for each situation.

Clare = per

Hans = per

c. Who gets pair more in their job?

gets paid more.

Answers

Answer:

yes

Step-by-step explanation:

15 x 300 = 7500

do the points on the line y=4/11x -5 have a slope of the y coordinate to the x coordinate for any point on the line except the y intercept? explain your answer.

Answers

y = (4/11)x - 5 
the slope of this line is 4/11, and the y-intercept is -5
When the line crosses the y axis, that is the y-intercept is when the value of x is zero:
y = (4/11)x - 5 
y = (4/11)(0) - 5 
y = -5
so at this point the equation doesnt have a slope you could say, but only at this point because is when x = 0

at a candy store, erika bought 3 kilograms of cinnamon red hots and 1 kilogram of gummy bears for $21.00. meanwhile, irene bought 3 kilograms of cinnamon red hots and 3 kilograms of gummy bears for $39.00. what is the cost of one kilogram of each type of candy?

Answers

If you would like to know the cost of one kilogram of each type of a candy, you can calculate this using the following steps:

1 kilogram of cinnamon red hots ... x = ?
3 kilograms of cinnamon red hots ... 3 * x = ?

1 kilogram of gummy bears ... y = ?
3 kilograms of gummy bears ... 3 * y = ?

Erika: 3 * x + y = $21.00
Irene: 3 * x + 3 * y = $39.00

3 * x + y = 21
3 * x + 3 * y = 39
_________________
3 * x + y - (3 * x + 3 * y) = 21 - 39
3 * x + y - 3 * x - 3 * y = - 18
- 2 * y = - 18      /(-2)
y = $9

3 * x + y = $21.00
3 * x = 21 - y
3 * x = 21 - 9
3 * x = 12     /3
x = $4

The correct result would be: 1 kilogram of cinnamon red hots cost $4 and 1 kilogram of gummy bears cost $9.

Numerical expression the sum of four and nine times three

Answers

The sum of 4 and 9 times 3 would be determined by adding 4 and 9 first, which is 13 then, you would multiply that with 3. And, 13 x 3 is 39. So, my final answer is 39.

Find the area of the following circle r=9 yd

Answers

The area of the circle is given by the formula A=pi*r^2 if the radius is 9yd you can simply sub it into the formula. A=pi*9^2 which then becomes A=pi*81 you can then put this into your calculator and you get approximately A=254.469 yds if you are not allowed a calculator use pi as 3.14 A=3.14*81 which gives you 254.34yds (close enough). Hope this helps

Answer:

254.34

Step-by-step explanation:

Please help me!!! ASAP!!1. what is the solution of the matrix equation ?
[9 4] x= [-9 -6]
[2 1] [-1 -8]

A. [5 -26]
[9 -60]

B. [-5 26]
[-1 -8]

C. [-5 26]
[9 -60]

D. [9 26]
[9 1]


solve the system
{ 2x +y - 4z = -30
{ 3x + 2y +2z =-8
{5x + 5y + z = -26

A. (-30,-8,-26)
B.(4,-2,4)
C. (-4,-2,4)
D.(-4,2,-4)

Answers

C= \left[\begin{array}{ccc}-5&26&\n9&-60\end{array}\right]
Find the determinant;

9*1- 2*4= 1

Inverse of the matrix;
1(\left[\begin{array}{ccc}1&-4\n-2&9\end{array}\right]

Pre-multiplying the matrix by the inverse on both the left hand side and the right hand side gives the answer above.
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