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Kaylis [27]
4 years ago
5

The sum of two numbers is 72. their difference is 24.

Mathematics
1 answer:
DENIUS [597]4 years ago
3 0
Lets  x and y are the two numbers
so
x+y = 72
x-y = 24
------------subtract
2x = 48
  x = 24

x+y = 72
y = 72 - x
y = 72 - 24 = 48

answer
two numbers are 48 and 24
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Kenny had 5/7 more trading cards than Lee. After Kenny collected 50% more trading cards, he had 220 more trading cards than Lee.
Monica [59]

Answer:

140 cards

Step-by-step explanation:

-Let x be the total number of trading cards Lee has.

-Therefore, each person has:

Lee= x\\\\Kenny=1\frac{5}{7}x

#Kenny collects 50% more. We multiply his current amount by 1.5times:

=1\frac{5}{7}\times 1.5\\\\=2\frac{4}{7}x

#We are given that Kenny's new number is 220 more than Lee's x. We therefore equate and solve as below:

2\frac{4}{7}x-x=220\\\\1\frac{4}{7}x=220\\\\=140

Hence, Lee had 140 cards

5 0
3 years ago
Express 9 -² using positive exponents. Do not simplify.
Leokris [45]
1/9^2 if that makes sense?
3 0
3 years ago
Determine the intercepts of the line that passes through the following points
shepuryov [24]

Answer:

(2,0) - x -intercept

(0, 1.5) - y-intercept

Step-by-step explanation:

The slope of the points can be found by writing a ratio of vertical change to horizontal change. It can be found in the table by subtracting y values from each other and subtracting x values from each other. The y values decrease by 3 each time or -6 - -3 = -6 + 3 = -3.

The x values increase by 4.

So the rate of change is -3/4.

This means if you go backwards on the table the previous point would be (2, 0). This is the x-intercept.

To find the y-intercept, you must go further back. Going back 2 more units would make the table appear as:

x                      y

-2                    3

0                      ???

2                      0

6                     -3

10                    -6

14                    -9

Since the y values decrease by 3 each time and we went back half the usual amount, then the value would be 1.5.

5 0
3 years ago
0.1 x n = 89.5 what does n equal too ?
SCORPION-xisa [38]
895 because 89.5 divided by 0.1 is 895
8 0
3 years ago
At the end of the day of teaching the skill of cutting and sewing to make capes, Ms. Ironperson and Mr. Thoro decided to go to t
olga_2 [115]

Answer:

The cost of a chicken shawarma wrap = $10.99

The cost of an order of spiced potatoes=$4.99

Equations needed

3x+2y =42.95

5x + 4y=74.91

Step-by-step explanation:

x = the cost of a chicken shawarma wrap

y = the cost of an order of spiced potatoes

Ms. Ironperson

3x+2y =42.95

Mr. Thoro

5x + 4y=74.91

3x+2y =42.95 (1)

5x + 4y=74.91 (2)

Multiply (1) by 2

6x + 4y=85.9 (3)

5x + 4y=74.91. (2)

Subtract (2) from (3)

6x - 5x= 85.9 - 74.91

x=$10.99

Substitute the value of x into (1)

3x+2y =42.95 (1)

3(10.99) + 2y =42.95

32.97 + 2y = 42.95

2y = 42.95 - 32.97

2y=9.98

Divide both sides by 2

y=9.98/2

=4.99

y=$4.99

Therefore,

The cost of a chicken shawarma wrap = $10.99

The cost of an order of spiced potatoes=$4.99

3 0
3 years ago
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