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yaroslaw [1]
3 years ago
10

Зх — 7 = 2х Show work

Mathematics
1 answer:
Olin [163]3 years ago
8 0
Answer:

x = 7

Step-by-step explanation:

3x - 7 = 2x

- 7 = -1x

x = -7/-1

x = 7

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The price of an item decreased by 20% to $200. Then later the price decreased again from $200 to $150. What is the percent of de
cricket20 [7]

Answer:

40%

Step-by-step explanation:

ok so first find the og price:

100% - 20% = 80%

so 80% = 200

let the 100% be x:

x * 0.8 = 200

x= 250

100% = 250

(difference/ og price) * 100% = the percentage decrease/ increase

(250-150/250)* 100% = 40%

OR

((the final price/ og price) * 100%) - 100%

((150/250)*100%) - 100% = 40%

There was a 40% decrease from the og price to the final price of 150.

3 0
3 years ago
Write 6(x – 5)4 + 4(x – 5)2 + 6 = 0 in the form of a quadratic by using substitution
abruzzese [7]

Hello from MrBillDoesMath!


Answer:    6 u^2 + 4u + 6 = 0 where u = (x-5)^2


Discussion; I think the problem statement should actually be to rewrite <u>this</u> equation:

6 (x-5)^4 + 4 (x-5)^2 + 6 -= 0.


Note  the power of "x-5" is 4 in the first term and is 2 in the second term. That is, the power of x-5 in the first terms is double, or the square, of the (x-5) power occurring in the second term. This suggest the substitution u = (x-5)^2.  Then the equation can be rewritten as

6 u^2 + 4u + 6 = 0

which is a quadratic in "u".


Regards, MrB


4 0
3 years ago
Read 2 more answers
Subtract. Write the answer in standard form.<br><br> (12+4i)−(3−7i)
labwork [276]

Answer:

9+11i

Step-by-step explanation:

8 0
4 years ago
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Bryan went to the hardware store and bought 5 identical copper pipes. When Bryan lined up the pipes end-to-end, the line was 1 m
Dahasolnce [82]

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Step-by-step explanation:

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3 years ago
6N=48<br><br> please solve for N
Fudgin [204]

Answer:

N=8

Step-by-step explanation:

6N=48

Divide by 6 both sides

6N/6=48/6

N=8

6 0
3 years ago
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