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Karolina [17]
3 years ago
12

What is 5(n-1)=2(n-4)-6

Mathematics
2 answers:
Shalnov [3]3 years ago
5 0

Answer:

Step-by-step explanation

6n - 6 = 2 (n+1)

Simplify 2 (n+1)

6n - 6= 2n +2

Move all terms related to n to the left side of the equation

4n -6 =2

Move all terms not related to n to the right side of the equation

4n =8

Divide each term by 4 then simplify

n=2  

kiruha [24]3 years ago
4 0

Answer:

n=2

Step-by-step explanation:

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The area (A) of a triangle varies jointly as its ba
Harrizon [31]

Answer:

The area (A) of a triangle varies jointly as its ba

se (b) and height (h). If its base is 8 inches and i

ts height is 7 inches, it has an area of 28 square

inches. Find the base if its height is 5 inches an

5

d its area is 16 square inches.

Formulate the equation of variation.

Step-by-step explanation:

8 0
2 years ago
Help me with this one please​
lesya [120]
For me, it’s easiest when i distribute the negative sign if i need to and then reorder to put the like terms together. and then solve.
(also sorry if it’s a little confusing with all the parentheses, i use them because it helps me organize everything)


21. (4x-9y) + (6x+10) + (8y-4)
= 4x + 6x - 9y + 8y + 10 - 4
= 10x - y + 6
—> D

22. (6x+9y-15) + (2x-9y+8)
= 6x + 2x + 9y - 9y - 15 + 8 (the 9y - 9y = 0, so you can leave it out of the final equation)
= 8x - 7
—> D

23. (9x^2-8x+3) - (5x^2-6x+4)
= 9x^2 - 8x + 3 - 5x^2 -(-6x) - 4
= 9x^2 - 5x^2 - 8x + 6x + 3 - 4 (remember that two - signs next to each other make a + sign)
= 4x^2 - 2x - 1
—> A

24. (9x^3-7x+8) - (5x^2+7x-10)
= 9x^3 - 7x + 8 - 5x^2 - 7x -(-10)
= 9x^3 - 5x^2 - 7x - 7x + 8 + 10
= 9x^3 - 5x^2 - 14x + 18
—> D

25. (6x+14y) - ((7x+5y) + (x-8y))
= (6x+14y) - (7x + x + 5y - 8y)
= (6x+14y) - (8x-3y)
= 6x + 14y - 8x -(-3y)
= 6x - 8x + 14y + 3y
= -2x + 17y
—> B
5 0
2 years ago
What does the word “flip” tell you to do in “keep change flip” for dividing fractions a) change the place of the numbers numerat
mars1129 [50]

Answer:

b) change the places of the numbers in the numerator and the denominator for the second fraction

Step-by-step explanation:

In the phrase "keep change flip":

You "keep" the first fraction.

"Change" the division sign into a multiplication sign.  

"Flip" (or switch) the places of the numerator and denominator in the second fraction.

Example:

\frac{1}{2} ÷ \frac{1}{3}

\frac{1}{2}*\frac{3}{1}=\frac{3}{2}=1.5

Hope this helps.

7 0
3 years ago
The 10th term of an arithmetic proression is 68 and the common difference is 7 find the first term of the sequence
leonid [27]

Answer:

5

Step-by-step explanation:

first term + (10-1)7=68

first term= 68- 63=5

3 0
3 years ago
POSTED THIS QUESTION TWICE NOW!!!!!!!!! SOMEBODY PLEASE HELP LIKE FR!!!! I JUST NEED THIS LAST QUESTION!!!
iVinArrow [24]
The answer is A(12-x) (10-x)=0
5 0
3 years ago
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