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omeli [17]
3 years ago
13

Twelve increased by a number

Mathematics
1 answer:
pochemuha3 years ago
3 0

Answer:

12+# OR 12+x

Step-by-step explanation:

Increased by 12 means plus 12. The word "is" in equations is an equal sign. So far, you have 2n+12. On the other side of the equal sign, you have 31 less than 3 times a number.

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I really need help with this since I have a math test tomorrow, I'd really appreciate it if someone could help.
Elza [17]
Ok first of all, I EXTREMELY appreciate your use of parenthesis. Ok so first just raise both sides to the power of 1/2.

(\frac{3}{8})^{x}=\frac{8}{11}

You'll see why I didn't include a negative. Then apply the log base 3/8 and you get

x =   log_{ \frac{3}{8} }( \frac{8}{11} )
Then you split the log up and you get
x =  log_{ \frac{3}{8} }(8)  -  log_{ \frac{3}{8} }(11)
You couldn't put a negative value for a log. That is why I excluded the negative part of the sqrt.
5 0
3 years ago
I'm doing a stick and poke what should I do you can add a picture if you want (I'm not going to do something big just something
Alchen [17]
Ooh what about a skull w/ some flowers growing out of it?
7 0
2 years ago
Read 2 more answers
a girl was asked about her age and she said she is half her mothers age and she was asked how old was her mother and she said i
Vlad [161]

Answer:

The girl is 19 y/o, the mom is 38 y/o and the dad is 43 y/o.

Step-by-step explanation:

26+13+31= 70    NO  

40+20+45= 105   NOT QUITE

19+38+43= 100 YES

7 0
2 years ago
Read 2 more answers
Is N² + N always an even number? Explain
qaws [65]

Answer:

Yes

Step-by-step explanation:

Yes.

Let's first start with even numbers. (N - even number)

Any even number squared, is an even number. Then, we add that squared even number to another even number which would give us an even number.

Now, let's see odd numbers.

Any odd number squared would be an odd number. When you add "N", it would be adding an odd number to an odd number, which gives you an even number.

OR

We can start by factoring the expression:

N^2+N=N(N+1)

This is essentially multiplying two consecutive numbers, which in turn means that one number has to be even, and one has to be odd. An odd number multiplied by an even number will always be even.

7 0
2 years ago
What is 6.25x + 7.50= 26.25
GarryVolchara [31]

Answer:

X = 3

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
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