Answer:
1100
Step-by-step explanation:
price = 1500
discount= 15%
15% of 1500 = (15/100)*1500= 15*15= 225
so selling price = 1275
profit is selling price - cost price
1275 - CP = 175
CP = 1275-175= 1100
I didn't understand the calculator part of the question
Answer:
4
Step-by-step explanation:
The equation is 2(10+x)=28 where x is the unknown number we are trying to find. Use distrubutive property to combine like terms. 2 times 10 is 20 and 2 times x is 2x. Now we have 20+2x = 28. What you do to one side you must do to the other. 20 minus 20 is 0. 28 minus 20 is 8. Now our equation is 2x is 8. To find 1 x we divided in half. 8/2 is 4 therefore the missing variable is 4.
it opens down because before x^2 is -2 (if it would be 2, it would open up)...and function, which opens up has a maximum value every time
Answer:
x=10
Step-by-step explanation:
40= 3x+10 (it equals 40 because of vertical angles)
