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larisa [96]
3 years ago
12

1/2x=13 help!!?????????

Mathematics
2 answers:
Dmitry_Shevchenko [17]3 years ago
7 0
First we do, 1/2*x=13÷1/2. Which gives us x=13 1/2. 13 1/2=26. Therefore, x=26. Hoped I helped. :)
motikmotik3 years ago
5 0
1/2 x 13 = 6.5 in decimal form
Fractions Form: <span>1 1/2</span>
<span>
1/1 + 1/2

((1 × 2) + (1 × 1)) / (1 × 2) 

(2 + 1) / 2

3/2

= 3/2

= 1 1/2

</span>
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The scale on a map shows that 1 inch = 30 miles. If there are 4.5 inches between your present location and the place you want to
anastassius [24]

Scale : 1 inch = 30 miles

So, the ratio between the distance on the map and the real distance is 1:30

When a quantity increase/decrease in a ratio, the other one increase/decrease respectively.

Call the miles we have to go : x

1:30 = 4.5:x

(1x4.5):(30x4.5) = 4.5 : x

4.5 : 135 = 4.5 : x

So, x = 135 => We have to go 135 miles to get to the place we want to go.

6 0
2 years ago
The table below represents the displacement of a turtle from its nest as a function of time: Time (hours) x Displacement from ne
andriy [413]
Part A: The y-intercept is 5. If you look to the data, when x=0, y=5. This means that the turtle started off 5 miles away from its nest. (at 0 hours, the distance away from his nest was 5 miles)

Part B:Answer=22. Remember, if you take any two distinct points on a line, the slope of the line will be equal to the average rate of change. In short,  we're just looking for the slope between the ordered pairs (1,27) and (4,93). The formula for slope is:

slope= \frac{y_{2}- y_{1} }{ x_{2} - x_{1} } = \frac{93-27}{4-1}= \frac{66}{3}=22

The average rate of change between x=1 and x=4 is 22. The average rate of changed describes the rate at which miles is changing with respect the the change in hour.

Part C: Answer=10hours. Since by now we know both the slope and the y-intercept, lets write the equation in slope intercept form and then solve for 225 miles.

y=mx+b
y=22x+5
225=22x+5
subtract 5 from both sides
220=22x
divide both sides by 22
10=x
It would take 10 hours for the turtle to travel 225miles from it's nest.
4 0
3 years ago
Colin thinks that n - 6 means 6 less than a number. Is Colin correct?
drek231 [11]

Answer: no

Step-by-step explanation: because it’s equal

4 0
3 years ago
F the range of the function f(x) = 7x – 2.7 is {14.1, 30.9, 41.4, 58.9, 68}, what is its domain?
grigory [225]
You need to solve  5 equations  
1. 7x - 2.1 = 14.1
2. 7x - 2.1 = 30.9  and so on


1. 7x - 2.1 = 14.1
7x = 16.2
x = 2.314     so first number in the domain is  2.314

You can calculate the other 4 in the same way
7 0
3 years ago
Four times a number is the same as the difference of three times a number and four find the number round your answer to the near
maksim [4K]

Answer:

4

Step-by-step explanation:

Its four because:

4 x 3 = 12

12 + 4 = 16

4 x 4 = 16

Four times times three plus four is like saying four times four.

4 0
3 years ago
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