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Svetllana [295]
3 years ago
13

Need help on question 12&13

Mathematics
1 answer:
sammy [17]3 years ago
8 0
12.
\alpha=\dfrac{360}{n}\\
18=\dfrac{360}{n}\\
n=20

13.
\dfrac{4}{10}=0.4\\\\
1-0.1-0.4=\boxed{0.5}
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Two lines have a slope of 3 and different y-intercepts how many solutions will this system have
Taya2010 [7]

Answer:

0 solutions / no solutions

Step-by-step explanation:

If two lines have the same slope but different y-intercepts, it means that they are parallel.

For example, we have two lines:  

y = x

y = x + 1

Both lines have the same slope of 1, but different y - intercepts. Because each equation increases the x and y at the same right (slope) but started at different points, the two equations will never touch.

It's similar to two runner who run at the same pace. If one runner started 50 meters ahead, that runner will always be ahead 50 meters (y-intercept) because they both run at the same rate.

6 0
3 years ago
The Arnold family arrived at the beach at
AlekseyPX

Answer:

13:30 military time, 1:30 normal time.

8 0
3 years ago
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Ruben bought a DVD recorder for 240 $. Now, it is on sale for 180 $. Find the percentage of change in the price
xenn [34]

Answer:

Step-by-step explanation:

orginal :$240

new/sale: $180

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3 0
3 years ago
Someone help meh and tell me how u did it
morpeh [17]

Answer: 2 4/9

The decimal equivalent is 2.44

Step-by-step explanation:

It may help to convert the fractions to decimals. Divide the numerator by the denominator.

2 3/8 is 2.375

2 1/8 is 2.125 etc.

Remember that absolute value is considered positive. Then put the numbers in order.

7 0
3 years ago
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