MATHEMATICS HIGH SCHOOL

Monica’s school band held a car wash to raise money for a trip to a parade in New York City. After washing 125 cars, they made $775 from a combination of $5.00 quick washes and $8.00 premium washes.This system of equations models the situation.

x + y =125

5x + 8y = 775

Solve the system to answer the questions.

How many premium car washes were ordered?

premium car washes

How many quick car washes were ordered?

quick car washes

Answers

Answer 1

Answer:

Answer:

50 and 75

Step-by-step explanation:

trust me bro

Answer 2

Answer:

Answer:

50 and 75

Step-by-step explanation:

Hope this helps :)

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Complete the expansion of this expression by finding the values of the capitalised pronumerals4x (5 + 4y + 3x) + 3y (1 + x) = Ax² + Bx + Cxy + Dy

A=
B=
C=
D=

Answers

Answer:

xdd

Step-by-step explanation:

xddd

Use a= √a b= √5 c= √10 to work out the value of ac/b
Give your answer in its simplest form.

Answers

Answer:

a = √a b = √5 c = √10

ac/b = (√a)(√10)/√5

= √ 10 × a /√5

= √10a / √5

Rationalize the surd

√10a ×√5/(√5)²

= √50a /5

= 5√2a/ 5

= √2a

The final answer is √2a

Hope this helps

Final answer:

You need to substitute the given values into the ac/b equation. After substitization and simplification, the equation ac/b simplifies to √2.

Explanation:

The equation that we need to evaluate is ac/b, using the variables a, b, and c given in the question. So, substituting the given values, we get:

a * c / b = √a * √10 / √5

Since a is equal to √a, we can replace a with √a in the equation, so it then becomes:

√a * √10 / √5 = √(a*10) / √5

Since a is √a, a*10 is therefore √10, so the equation becomes:

√10 / √5

That simplifies to √2 in its simplest form.