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const2013 [10]
3 years ago
12

Factor problems 13 - 16 by using the perfect squares method.

Mathematics
1 answer:
Anarel [89]3 years ago
7 0
Your answer is D. (2x2 - 5)(-2x2 + 5)
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Event A has a 0.3 probability of occuring and event B has a 0.4 probability of occuring. A and B are independent events. What is
GarryVolchara [31]
When you say either, you add both A and B
0.3+0.4=0.7
Your answer is 0.70 which means 70%
4 0
4 years ago
Read 2 more answers
Maria makes a fruit salad.
Travka [436]

Answer:

If my calculations are correct it would be 6,168 cups of strawberries

Step-by-step explanation:

If it’s 8 times the amount of them combined then you add all of the other fruit together and then multiply by 8 giving you:

323+214+234=771

771*8=6,168 cups of strawberries.

Only in math would someone need that much fruit

6 0
3 years ago
A door 2m*1m is fixed on a wall.The wall is 8.5 long and 2m high.Find the cost of whitewashing the wall ₹40 per square meter​. ​
Savatey [412]

Answer:

600\ rupees

Step-by-step explanation:

We\ are\ given:\\Dimensions\ of\ the\ door=2m *1m\\Dimensions\ of\ the\ wall=8.5m*2m\\Cost\ of\ whitewashing\ of\ 1m^2=40\ rupees\\Hence,\\First\ lets\ consider\ the\ wall:\\Area\ of\ a\ rectangle= Length*Width\\Here,\\Length\ of\ the\ wall=8.5\ m\\Width\ of\ the\ wall=2\ m[As\ here\ width\ and\ height\ are\ the\ same\ thing]\\Hence,\\Area\ of\ the\ wall=8.5*2=17\ m^2

Now,\\Lets\ consider\ the\ door:\\As\ we\ know\ that,\\Area\ of\ a\ rectangle=Length*Width\\Here,\\Length\ of\ the\ door=2m\\Width\ of\ the\ door=1\ m\\Hence,\\Area\ of\ the\ door=2*1=2m^2\\\\Now,\\The\ area\ to\ be\ whitewashed=Area\ of\ the\ wall-Area\of\ the\ door\\Hence,\\The\ area\ to\ be\ whitewashed=17-2=15\ m^2\\\\As\ we\ know\ that,\\Cost\ of\ whitewashing\ 1\ m^2\ of\ the\ wall= 40\ rupees\\Hence,\\

Cost\ of\ whitewashing\ the\ whole\ wall=Area\ of\ the\ wall\ to\ be\\ whitewashed*Rate\ of\ whitewashing\ per\ m^2\\Hence,\\Cost\ of\ whitewashing\ the\ whole\ wall=15*40=600\ rupees

8 0
3 years ago
A regular pentagon has an apothem of 7.3 inches and a perimeter of 53
JulsSmile [24]

Answer:

The area of the pentagon is approximately 193 square inches.

Step-by-step explanation:

In order to solve this problem we need to apply the appropriate formula to calculate the area of the pentagon. This formula is shown below:

area = (perimeter*apothem)/2

Applying the data from the problem, we have:

area = (53*7.3)/2

area = 386.9/2

area = 193.45 square inches

The nearest whole number is 193 square inches.

3 0
4 years ago
What is the first step you would take if you were using the algebraic method of substitution to solve?
Brilliant_brown [7]

Answer:

substitute the 'x' with any number

Step-by-step explanation:

an example of this could be, if you need to find

y=2x+6

you would need to find what y is

in order to do that, subsitute x for any number, example, 2, and work out the equation. 2x means 2 times 2 (x is substituted by 2). that is 4 and +6 is 10. this means y would be 10. this is how substitution happens:)

7 0
3 years ago
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