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Xelga [282]
3 years ago
9

Is an estimate for the percent of a number always,sometimes or never greater than actual percent of the number

Mathematics
1 answer:
posledela3 years ago
3 0
It would be sometimes because it can be 82.2% but if you round it the closest one would be 80% if it was 84.7% its closer to 85 so it would be 85% I hope I helped you out rate the answer if I got it right thanks!
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The radius of the circle whose equation is (x-3)^2 + (y+1)^2 = 16 is
Firdavs [7]

Answer:

4

Step-by-step explanation:

The general equation of a circle with center (a, b) and radius r is given by the equation;

(x-a)^{2}+(y-b)^{2}=r^{2}

The constant in the right hand side of the equation is simply the square of the radius;

We have been given the following equation;

(x-3)^2 + (y+1)^2 = 16

Comparing this with the general equation above;

r^{2}=16\\\\r=\sqrt{16}=4

4 0
3 years ago
If the value of "Y" varies directly with "X" and y=-8,when x=20,find "Y"if x=-4
kherson [118]

Answer:

y is 8/5 when x = -4.

Step-by-step explanation:

If the value of "Y" varies directly with "X", we can write y = kx, where k is the constant of proportionality.

If "y=-8,when x=20," then we can find k:    -8 = 20k, or k = -2/5.

Then y = (-2/5)x.

If x = -4, then y = (-2/5)(-4) = 8/5

y is 8/5 when x = -4.

6 0
3 years ago
A method for finding the volume of any solid for which cross sections by parallel planes have equal area is called
goldenfox [79]
The answer is D, Cavalieri's Principle 
3 0
3 years ago
Find the number of different ways that an instructor can choose 6 students from a class of 31 students for a field trip.
kompoz [17]

Answer:

186.

Step-by-step explanation:

By multiplying six by thirty one, you'll get every single way the instructor can choose six students from a class of thirty one students for a field trip.

8 0
3 years ago
parsnips were priced at 3 pounds for $1.23 what was the price per pound? how much would 10 pounds of parsnips cost?
Yakvenalex [24]

Answer:

The answer is $4.10

Step-by-step explanation:

If 3 pounds = $1.23

1 pound =1.23/3

= 0.41

Therfore 10 pounds = 10× 0.41 = $4.10

8 0
2 years ago
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