Answer:
Step 3: He should have divided both sides by −7
Step-by-step explanation:
Incorrect calculation
−7x + 25 = 48
Step 1: −7x + 25 − 25 = 48 − 25 Step 2: −7x = 23
Step 3: negative seven times x over seven = twenty-three over seven
-7*x/7 = 23/7
-7x/7 = 23/7
Step 4: x = twenty-three over seven
Correct calculation
−7x + 25 = 48
Step 1: −7x + 25 − 25 = 48 − 25 Step 2: −7x = 23
Step 3: negative seven times x over seven = twenty-three over seven
-7*x/-7 = 23/-7
-7x/-7 = 23/-7
Step 4: x = twenty-three over negative seven
x = -23/7
So from 75 to 80 and 75 is 100%
80-75=5
5 is x% of 75
x%=percent markup
5=x% times 75
% means parts out of 100 so
x%=x/100
5=x/100 times 75
5=75x/100
75x/100=75/100 times x
75/100=3/4
5=3/4x
multiply both sides by 4/3
20/3=x
6.6666%
the percent mark up is 6.6666%
Answer:
It will be 50 cm ma'am
Step-by-step explanation:
I will explain in comments ma'am
Answer:
The correct answers are A, C and D.
Step-by-step explanation:
Given the equation 4x - 5y = 24, we substitute the coordinates of the given points to determine whether the equation is then true or not true.
For example, if we focus on point B: (6, 0), x = 6 and y = 0 and the equation becomes 4(6) - 5(0) = 24, which is TRUE.
Doing the same thing with A: (-9, -12), we get 4(-9) - 5(-12) = 24, which is also TRUE.
Check out C: (4, 8): 4(4) - 5(8) = 24. This is FALSE.
Check out D: (1, -4): 4(1) - 5(-4) = 24. This is TRUE.
The correct answers are A, C and D.
Answer:
2.5 or 2 1/2
Step-by-step explanation:
