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jeyben [28]
3 years ago
7

Help me with problems 13 ,14 and 15

Mathematics
1 answer:
Tamiku [17]3 years ago
8 0
|2.5| because 2 and 1/2 are also 2.5 written in decimal, and the absolute value is always positive
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Help ASAP! I'll mark brainliest if correct
ahrayia [7]

Answer:

160 students

Step-by-step explanation:

89 + 215  = 304

464 - 304 = 160

3 0
3 years ago
Solve<br> 13^x+2=5<br> having a bit of trouble
-Dominant- [34]
<em>Solve: </em>13^{x} + 2 = 5

Start by isolating the x-variable as much as you can:
13^{x} = 5 - 2 = 3
13^{x} = 3

Now, if we take the log with base 13 of both sides, then the left hand side will cancel out really easily. This is based on the concept of inverse operations. For example, when we take the square of a square root, we get our initial value. This is because the two operations are inverses of each other, and basically undoes each other.

Logarithms and exponentials are the inverse operations of each other. If we want to extrapolate the power of an exponential, we take the logarithmic function of it, and vice versa.

In this case, we are saying what power of '13' will produce us with 13ˣ, and the only answer will be x itself.

log_{13}(13^{x}) = log_{13}(3)
x = log_{13}(3)
3 0
3 years ago
12n +9 = 6 - 311<br> How many solutions does the equation have?
svp [43]

Answer:

One Solution

Step-by-step explanation:

We can figure out the steps for this equation by separating the variables in the left side and the whole numbers on the right side, what you can essentially do is separate them and the equation will look like

12n = -9 + 6 -311

then,

12n = -314

which gives you, approximately

x = -26.16667.

Hope this helped!

7 0
3 years ago
I NEED HELP PLZ AND THANK YOU PLZ THIS IS DUE I WILL MARK BRAINEST
Masteriza [31]
1. It is already in slope intercept form so y=2/5x-12/5

2. Y=2/3x-2

Isolate the y

-9y=-6x+18

y=2/3x-2

3. y=4/5x+14

Isolate the y

-5y=-4x-70

y=4/5x+14
6 0
3 years ago
A scale drawing shows a circular fountain with a diameter of 12 units. The actual fountain has a diameter of 60 feet. Select all
EleoNora [17]

Answer:i think its 70 if im wrong im very sorry

Step-by-step explanation:

5 0
3 years ago
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