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Hunter-Best [27]

2 years ago

11

The total number of math students and history students is 43. Find the number of students in each class if the number of history

students is 7 less than the number of math students.

1 answer:

olasank [31]2 years ago

8 0

Answer:

25 math 18 history

Step-by-step explanation:

Equations:

x+y=43

x-7=y

x+x-7=43

2x=50

X=25

25-7=y

y= 18

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Step-by-step explanation:

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Blababa [14]

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Rufina [12.5K]

Answer:

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Step-by-step explanation:

It is given in the question functions f(x) as 3x+2 and g(x)=5-6x.

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To find $(g \circ f)(x)$ , substitute f(x) for x in g(x) and simplify the expression.

Step 1 of 2

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$\begin{aligned}&(f \circ g)(x)=f(5-6 x) \\&(f \circ g)(x)=3(5-6 x)+2 \\&(f \circ g)(x)=15-18 x+2 \\&(f \circ g)(x)=17-18 x\end{aligned}$

Step 2 of 2

Substitute f(x) for x in g(x) and simplify the expression.

$\begin{aligned}&(g \circ f)(x)=g(3 x+2) \\&(g \circ f)(x)=5-6(3 x+2) \\&(g \circ f)(x)=5-18 x-12 \\&(g \circ f)(x)=-7-18 x\end{aligned}$

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2 years ago

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Step-by-step explanation:

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3 years ago