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sergij07 [2.7K]
3 years ago
9

Plsssssss help -1 3/10 + 2/5

Mathematics
1 answer:
vitfil [10]3 years ago
8 0

Answer:

Step-by-step explanation:

-9/10 or -0.9

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How to find the are of each regular polygon
Ghella [55]

Answer:

Hi there!

To find the area of a regular polygon, all you have to do is follow this simple formula: area = 1/2 x perimeter x apothem.

Apothem:  a segment that joins the polygon's center to the midpoint of any side that is perpendicular to that side.

7 0
4 years ago
(out loud) Find the percentages. 15m is what percent of 60m; 3m; 30m; 1.5 km?
N76 [4]

Answer:  15meter is 25% of 60m

                  15m is 500% of 3m

                   15m is 50% of 30m

                    15m is 1% of 1.5km.


Step-by-step explanation:

Given: 15m is what percentage of 60m; 3m; 30m; 1.5km

To find: Find the percentage.

Formula used: 1 kilometer=1000meter.

Explanation:

         Let  X percentage of 60m =15meter

So,          X% of 60m =15m

             \frac{60X}{100}  =  15m

Multiply both side by 100.

             60X = 1500m

On dividing both side by 60

               X = 25%

         Let  X percentage of 3m =15meter

So,          X% of 3m =15m

             \frac{3X}{100}  =  15m

Multiply both side by 100.

             3X = 1500m

On dividing both side by 3

               X = 500%

         Let  X percentage of 30m =15meter

So,          X% of 30m =15m

             \frac{30X}{100}  =  15m

Multiply both side by 100.

             30X = 1500m

On dividing both side by 30

               X = 50%

         Let  X percentage of 1.5km =15meter

  Convert kilometer into meter by above formula (1.5km=1500meter)

So,          X% of 1500m =15m

             \frac{1500X}{100}  =  15m

Multiply both side by 100.

             1500X = 1500m

On dividing both side by 1500

               X = 1%

Therefore , 15meter is 25% of 60m

                  15m is 500% of 3m

                   15m is 50% of 30m

                    15m is 1% of 1.5km.



3 0
3 years ago
Event A occurs with probability 0.2. Event B occurs with probability 0.8. If A and B are disjoint (mutually exclusive), then
swat32
What's the question? Do you want to prove these statements?
4 0
3 years ago
Read 2 more answers
What is the y-intercept of f(x)=-X^3+3x^2+1?
IgorC [24]
ANSWER

The y-intercept is

(0,1)


EXPLANATION

The given polynomial function is


f(x) =  -  {x}^{3}  + 3 {x}^{2}  + 1

At y-intercept the value of x is zero.


Therefore we need to put
x = 0

into the given polynomial function to determine the corresponding y-value.



f(0) =  -  {(0)}^{3}  + 3 {(0)}^{2}  + 1

This will give us,


f(0) =  0 + 0+ 1

We further simplify to obtain,
f(0) =1



This means that when
x = 0
the value of the function is
1

Hence the y-intercept is

(0,1)




6 0
4 years ago
At Cheng's bike rentals, it costs $34 to rent a bike for 7 hours. How many hours of bike use does the customer get per dollar?
-BARSIC- [3]

Answer:

7/34

Step-by-step explanation:

it costs $34 to rent a bike for 7 hours

So it will be 7/34 hours of bike per dollar.

6 0
4 years ago
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