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yulyashka [42]
2 years ago
8

In a sample of students, 125 said they exercise on a regular basis. How large was the sample if 27.3% said they exercised on a r

egular basis?
Mathematics
2 answers:
Gwar [14]2 years ago
7 0
125 27.3
—— = ——
X 100

125 x 100 = 12500
12500/27.3 = 456.8

458 people
krek1111 [17]2 years ago
5 0

First, let's declare a variable

x = # of students

Now, let's create an equation to model the problem.

x * 0.273 = 125

Divide both sides by 0.273

x = 457.8 = 458 students.

Note, I rounded to the nearest whole number.

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Can anyone help with this please, I am so stuck!
Finger [1]

Answer:

(x + 1)^2 + (y - 4)^2 = 8

Step-by-step explanation:

Midpoint of the diameter is the centre

So....Centre coordinates are ((-3+1)÷2 ; (2+6)÷2) = (-1;4)

Calculate the radius of the circle....

Radius = square root of [(-1+3)^2 + (4-2)^2]

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Then substitute the x-coordinate of the centre into the first slot....then the y-coordinate into the second slot and the radius(squared) into last slot of the equation......;

(x + 1)^2 + (y - 4)^2 = 8

4 0
3 years ago
Find the y-intercept from the line passing through (1, 3) and having slope m=2.
Troyanec [42]

Answer:

The y intercept is 1

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y = 2x+b

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8 0
3 years ago
Read 2 more answers
What’s the difference between linear and non linear functions
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3 years ago
Kumar bought some mangoes. The price of each mango () is found to be 6 more than the total number of mangoes bought by him and t
spayn [35]

Answer:

Price = 20, Amount = 14

Step-by-step explanation:

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P = A + 6

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insert A+6 for P

280 = (A+6) * A

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280=1*a^2+6*a  | Vertausche beide Seiten der Gleichung.

1*a^2+6*a=280  | quadratische Ergänzung: ergänze auf beiden Seiten (3)^2

1*a^2+6*a+(3)^2=3^2+280  | Rechne 3 hoch 2 aus.

1*a^2+6*a+(3)^2=9+280  | addiere 9 und 280

1*a^2+6*a+(3)^2=9+280  | Fasse die rechte Seite mit Hilfe der binomischen Formel zusammen.

1*(1*a+(3))^2=289  | Auf beiden Seiten Quadratwurzel ziehen.

1*a+(3)=+-*289^0.5  

1*a_1+(3)=289^0.5  

1*a_1+3=289^0.5  | Ziehe die Wurzel aus 289

1*a_1+3=17  | -3

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8 0
3 years ago
What is the square root of -1?
Minchanka [31]
The square root of -1 “i”
5 0
3 years ago
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