A. 7
B. 50
C. 14
D. 42
Fourteen is 28% of B) 50
Why, you ask? Let's see -
Let the unknown number be n, for 'number'.
Let's put the unknown n next to 28%
.28n% = 14
(Think, what times .28 equals 14? Look below to find out! ↓ )
Let's now do the opposite of the actual equation - divide the two known numbers by each other -
.28 ÷ 14 = 50
When in doubt, check your answer:
To check this, we would do the opposite - Multiplication
Multiply .28 by 50 to get 14 (At least you should get 14)
.28 × 50 DOES EQUAL 14! We were right! :D
↑ ↑ ↑ Hope this helps! :D
3(3x + 7) > 4-8(4 + 5x).
Answer:
x > -1
Step-by-step explanation:
Step 1: Distribute
3(3x + 7) > 4 - 8(4 + 5x)
(3 * 3x) + (3 * 7) > 4 + (-8 * 4) + (-8 * 5x)
9x + 21 > 4 - 32 - 40x
Step 2: Combine like terms
9x + 21 > 4 - 32 - 40x
9x + 21 > -28 - 40x
Step 3: Add 40x to both sides
9x + 21 + 40x > -28 - 40x + 40x
49x + 21 > -28
Step 4: Subtract 21 from both sides
49x + 21 - 21 > -28 - 21
49x > -49
Step 5: Divide both sides by 49
49x / 49 > -49 / 49
x > -1
Answer: x > -1