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makvit [3.9K]
2 years ago
13

11. Cory owns x shoes. Nico has y shoes. The

Mathematics
2 answers:
Mashutka [201]2 years ago
5 0

Answer:

5 and 6

Step-by-step explanation:

GenaCL600 [577]2 years ago
3 0
Answer: Cory owns 7 shoes, Nico owns 4.
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On the bottom right corner. I need help on that please! First to answer gets branliest and
katen-ka-za [31]

Answer:

20%×60

1/5×60

i only help these two

Step-by-step explanation:

6 0
3 years ago
Mrs Tan bought 4 times as many pens as notebooks and each notebook cost $8.20 more than each pen. She spent $26 more on the book
lilavasa [31]
Let x be the cost of 1 pen
then cost of 1 notebook = x + 8.20

Let y be the number of pens Tan buys
then number of notebooks Tan buys = y/4

She spent $26 more on books than on pens which means

Cost of notebooks - Cost of pens = 26
(x + 8.20) * y/4 - xy = 26

Sinplifying it

(xy + 8.20y)/4 - xy = 26
(xy + 8.20y - 4xy)/4 = 26
8.20y - 3xy = 104

She spent $394 which means

Cost of notebooks + Cost of pens = 394
(x + 8.20) * y/4 + xy = 394

Simplifying it

(xy + 8.20y)/4 + xy = 394
(xy + 8.20y + 4xy)/4 = 394
8.20y + 5xy = 1576

Now, we have two equations,

(1) 8.20y - 3xy = 104
(2) 8.20y + 5xy = 1576

Now we need to find a third equation with either x or y as the subject of any of both the previous equations.

Let's make y the subject of (2) equation

8.20y + 5xy = 1576
y(8.20 + 5X) = 1576
(3) y = 1576/(8.20 + 5x)

Let's substitute the new value of y from (3) into (1) because we rearranged (2) to from (3)

8.20y - 3xy = 104
y(8.20 - 3x) = 104
y = 104/(8.20 - 3x)
1576/(8.20 + 5x) = 104/(8.20 - 3x)
1576 * (8.20 - 3x) = 104 * (8.20 + 5x)
12923.2 - 4728x = 852.8 + 520x
12923.2 - 852.8 = 4728x + 520x
12070.4 = 5248x
12070.4/5248 = x
x = 2.3

Now find the value of y by substituting the value of x in either equation, preferably (3)

y = 1576/(8.20 + 5x)
y = 1576/(8.20 + 5 * (2.3))
y = 80

Therefore cost of 1 notebook = x + 8.20 = 2.3 + 8.20 = $10.50

8 0
3 years ago
A window washer cleaned 38 windows in 2 hours. At this rate, how many windows did he clean in 7 hours? Help before I pass out tr
shutvik [7]

Answer: 133 windows


Step-by-step explanation:

Step 1: 38/2=19

Step 2: 19*7=133


4 0
3 years ago
Read 2 more answers
1) There are about 20 million people in New York State, with a total land area of about 47,000 square miles.
Nata [24]

Step-by-step explanation:

B. 426 people per square. mile

5 0
2 years ago
What is the equation of the line, in slope-intercept form, that passes through the point (0,7) and is perpendicular to the line
Arisa [49]

Answer:

=12

Step-by-step explanation:


7=3(0)-5

7=-5

7+5

=12


Im pretty sure this is the answer


4 0
3 years ago
Read 2 more answers
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