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Rasek [7]
3 years ago
10

In the first session 40 student attended.Of these 40 students 60% were girls. How many girls attended the first session of swimm

ing lessons?
Mathematics
2 answers:
Romashka-Z-Leto [24]3 years ago
8 0
24 girls

60% is 0.6
40 x 0.6 = 24
Nataliya [291]3 years ago
5 0
10% of 40 is 4.

4 x 6 = 24

There were 24 girls.
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olga nikolaevna [1]
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Total cost = (cost of car before tax) + (tax amount)
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The total cost is given to be $14,512, which means 

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</span>
1.05x = 14512
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The total cost of the car before tax, to the nearest cent, is $13,820.95
6 0
3 years ago
Sistema de ecuaciones.5x+2y=-152x-2y=-6
Zolol [24]

Tnemos el sisema de ecuaciones:

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Podemos resolverlo por eliminación sumando ambas ecuaciones y eliminando y. Asi podemos resolver para x:

\begin{gathered} (5x+2y)+(2x-2y)=(-15)+(-6) \\ 7x+0y=-21 \\ x=-\frac{21}{7} \\ x=-3 \end{gathered}

Ahora podemos resolver para y con cualquiera de las dos ecuaciones:

\begin{gathered} 2x-2y=-6 \\ 2\cdot(-3)-2y=-6 \\ -6-2y=-6 \\ -2y=-6+6 \\ -2y=0 \\ y=0 \end{gathered}

Respuesta: x=-3, y=0

7 0
1 year ago
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Step-by-step explanation:

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Step-by-step explanation:

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