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fredd [130]
3 years ago
7

Solve 2x + 5 = 12 please help ​

Mathematics
1 answer:
kherson [118]3 years ago
3 0

Answer:

first method

subtract 5 from both side

2x + 5 -5 = 12 - 5

:. 2x = 7

:. X= 2

7

divide 2 from both side

X= 2x 7

2 2

:. X= 3.5

second method

2x = 12 - 5

2x = 7

X= 2 ÷ 7

:. X= 3.5

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Answer:

Scalene

Step-by-step explanation:

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8 0
3 years ago
There were 287 music books and 134 science books in the store. After some books were sold there are 159 books left. How many boo
stiks02 [169]

Answer:

262 books sold

Step-by-step explanation:

This is a very vague word problem, but if it truly is just asking the amount of books sold (regardless of music or science), here's how to get the answer:

1. 287+134=421 - first you want to add together the two types of books to get the total amount of books in the store

2. 421-x=159 - create an equation and solve.

3. -x=-262 - follow order of operations and subtract 421 on both sides in order to isolate the variable

4. x=262 - divide each side by -1 to make the variable positive.

If you'd like an easier way, you can just:

1. 421-159=262 - it's easier, but my math teacher would count us wrong if we didn't do equations a specific way. Good luck!

4 0
3 years ago
Read 2 more answers
Ln (x-2) +ln (2x-3)=2ln x
goblinko [34]
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D:x\ \textgreater \ 2 \wedge x\ \textgreater \ \dfrac{3}{2}\wedge x\ \textgreater \ 0\\
D:x\ \textgreater \ 2\\\\
\ln (x-2) +\ln (2x-3)=2\ln x \\
\ln (x-2)(2x-3)=\ln x^2\\
(x-2)(2x-3)=x^2\\
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4 0
3 years ago
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Len [333]
Dividing the 2nd equation by 2 gives y=2x + 3 which is the same as the too
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6 0
3 years ago
I don’t know ans of 17 number say me answer
Ede4ka [16]

Area of the bigger rectangle =(18×8)cm

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=144cm

2

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=72cm

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∴ Total area = area of smaller rectangle + area of bigger rectangle =(72+144)cm

2

=216cm

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4 0
2 years ago
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