6=-3(x+2)
——Distribute -3(x+2)
6=-3x-6
—-Flip the equation
-3x-6=6
—-add 6 on both sides..the 6’s will cancel each other and 6+6=12
-3x=12
—-divide -3 on both sides..the 3’s will cancel each other and 12 divided by -3 = -4
Answer: x = -4
Answer: yes, Jenny is correct.
Explanation.
Analysis step by step.
1) Jenny's brother washed dishes 8 times.
2) Jenny washed dishes 4 * 8 = 32
3) The difference is 4 * 8 - 8 = (4 - 1) * 8 = 3*8 = 24.
4) Jeeny washed dishes 32 times, while her brother washed dishes 8 times, so, indeed, she washed 3 * 8 more dishes than her broter and she is correct.
You must realize that although she washed 4 times the number of dishes that her brother did, the difference is just 3 times: 32 - 8 = 24 = 3 * 8
The equation that does not belong is C because it is the only one that contains exponents
Answer:
19. Opposite of a Difference ↔ E. -(8 - 3·m) = 3·m - 8
20. Opposite of a sum ↔ A. -[(-r) + 2p] = -(-r) - 2p
21. Opposite of an Opposite ↔ F. -1[ -1(9 - 2w)] = 9 - 2w
22. Multiplication by 0 ↔ B. 160 - (3d + 2)(0) = 160 - 0
23. Multiplication by ↔ D. -1 -(4r + 3s) + t = (-1)(4r + 3s) + t
21. Distributive property ↔ C. 5(2 - x) = 10 - 5x
Step-by-step explanation:
19. Opposite of a difference is the difference of the opposites
20. Opposite of a sum is the sum if the opposites
21. Opposite of an opposite is the original number
22. Multiplication by 0- The result of multiplication by 0 is 0
23. Multiplication by -1 results in the change in sign of a number
24. Distributive property - Multiplying the sum or difference of two numbers by a number, will have the same result as multiplying each each of the addends by the number individually and adding the product together.
Answer:
0.142 cm/yr
Step-by-step explanation:
An <em>average</em> is the sum of all the measurements divided by the number of measurements.
If there was a measurement each year, there were 175 measurements, and their sum is 24.8 cm.
Average movement = 24.8/175
Average movement = 0.142 cm/yr
The land moved an average of 0.121 cm each year
