Answer:
200 is the number of sandals
500 is the number of shoes
Step-by-step explanation:
x is the number of sandals
y is the number of shoes
so 2.5x + 4y = 2500
=> x = (2500 - 4y)/2.5
In the month of April, the numbers of shoes doubles
2.5(2x) + 4y = 3000
5x + 4y = 3000
Substitute x = (2500 - 4y)/2.5
5(2500 - 4y)/2.5 + 4y = 3000
5000 - 8y + 4y = 3000
-4y = - 2000
y = 500
x = (2500 - 4y)/2.5 = (2500 - 4(500))/2.5
x = (2500 - 2000)/2.5
x = 500/2.5 = 200
Am assuming the text of the problem is:
"At 6:00 p.m., the temperature was 55 Fahrenheit. At 11:00 p.m. that same evening, the temperature was 40 Fahrenheit. What real number represents the average change in temperature per hour?"
Average change in temperature per hour = (55 - 40)/(11 - 6)
Average change in temperature per hour = 15/5
Average change in temperature per hour = 3 Fahrenheit per hour
The correct question is
<span>Suppose you know that S angle and Y angle are complementary, and that angle S=5(angle Y)- 180 degrees. What is the value of angle Y?
we know that
</span>S angle and Y angle are complementary
so
S+Y=90-------> S=90-Y------> equation 1
and
S=5Y-180----> equation 2
equate equation 1 and equation 2
90-Y=5Y-180------> 5Y+Y=180+90-----> 6Y=270-----> Y=45°
S=5*45-180-----> S=45°
the answer is
Y=45°
Answer:
d
Step-by-step explanation:
It is going at a steady rate of 30$ an hour
