Answer:
57 children
54 adults
Step-by-step explanation:
Let's call x the number of children admitted and call z the number of adults admitted.
Then we know that:

We also know that:

We want to find the value of x and z. Then we solve the system of equations:
-Multiplay the first equation by -4 and add it to the second equation:


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Now we substitute the value of x in the first equation and solve for the variable z



7.5, 7.058, 8.508,
8.58
Step-by-step explanation:
Answer: c=a2+b2
Step-by-step explanation: the triangle is solvedlike that
Answer:
100 N to the left
Step-by-step explanation:
They have to be equal and opposite to balance, so they will need a force of 100 N to the left
Answer:
b ≤ -4
Step-by-step explanation:
4b−4≤−20
4b - 4 + 4 ≤ - 20 + 4
4b ≤ -16
Divide both sides by 4
b ≤ -4