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amid [387]
3 years ago
6

From a sample of 50 incinerators in a major city. of the 50 samples, only 18 met an environmental standard for the concentration

of a hazardous compound. can it be concluded that fewer than half of the incinerators in the city meet the standard?
Mathematics
1 answer:
yuradex [85]3 years ago
6 0
Yes. since half of 50 is 25 it is correct to say that 18 is less than half
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Slove the following equation.<br>6n - 3(n + 2) + 3(7n + 1) = 0​
Otrada [13]

Answer:

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6 0
2 years ago
the combined area of two squares is 45 square centimetres each side is twice as long as a side of the other square what length o
Ostrovityanka [42]

Answer:

Let the side of  one square be x.    Area = x*x = x²

Then the side of other square  would be 2x ,   Area = 2x*2x = 4x²

Combined area = x² + 4x²  = 5x²

This combined area = 45 cm²

you simplify

Therefore  5x²  = 45   Divide both sides by 5

                 x²  =  45/5

                 x²  = 9        Take square root of both sides

                 x   =  √9

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Length of larger square is 2x  = 2*3 = 6 cm

Length of larger square = 6cm

Step-by-step explanation:

4 0
2 years ago
I have four friends, and 3 cookies, how many cookies do I give each person. What do I have left over, and what is the fraction?
andriy [413]

Answer:

3/4 of cookie per each friend.

Step-by-step explanation:

Since you have 4 friends, and only have 3 cookies,

the fraction is 3/4. why? because 3/4= 0.75

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3 0
2 years ago
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What conclusions can you draw from the distances that you recorded in question 7
mezya [45]

Answer:

If corresponding vertices on an image and a preimage are connected with line segments, the line segments are divided equally by the line of reflection. That is, the perpendicular distance from the line of reflection to either of the corresponding vertices is the same. Line  is a perpendicular bisector of the connecting line segments.

Step-by-step explanation:

3 0
3 years ago
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frutty [35]
Y=-1/20(x+3)^2

Your could always tell by which way the curve is pointing and if pointing down it’s a negative it’s pointing up it’s a positive

Hope that helped
7 0
3 years ago
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