Step-by-step explanation:
step 1. what is the question? solve for x? okay.
step 2. 28/54 = (2x+ 8)/(5x - 4)
step 3. 28(5x - 4) = 54(2x + 8) (cross multiplication)
step 4. 14(5x - 4) = 27(2x + 8) (divide both sides by 2)
step 5. 70x - 56 = 54x + 216 (distributive property)
step 6. 16x = 272 (group x's and add 56 to both sides)
step 7. x = 17 (divide both sides by 16).
Answer:
x=19
Step-by-step explanation:
2(x+6)=3(x-4)+5
2x+2*6=3x-3*4+5
2x+12=3x-12+5
12+12-5=3x-2x
19=x
Answer:
16 square feet
Step-by-step explanation:
The apothem of a square is equal to half of the length of one side.
This means that twice the apothem is equal to the length of one side.
2*2 = 4 ft
To get the area I will multiply the two sides (squares have equal sides):
4*4 = 16 ft^2
Answer:
40 students picked bananas
Step-by-step explanation:
3/4 picked apples
1 - 3/4 = 1/4 picked bananas
3/4x = 120
Multiply both sides of the equation by 4/3
4/3 * (3/4x) = 120/1 * (4/3)
x = 480/3
x = 160
Total of 160 students
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120 = apples 160 - 120 = 40 = bananas
40 students picked bananas
Hope this helps :)