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2 years ago

10

Some friends decide to go to the aquarium together.Each person pays $7.50 to get in.They spend a total of $40 for the shark exhi

bit.The total cost is $70.Solve 7.5x+40=70 to find how many people went to the aquarium.

1 answer:

lilavasa [31]2 years ago

6 0

7.5x+40=70=> 7.5x=30=>x=30/7.5 so x = 4 people

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Answer:

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3 years ago

Give a big-o estimate for the number of operations (where an operation is an addition or a multiplication) used in this segment

Marianna [84]

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3 years ago

an auto repair shop charges $25 an hour they say your muffler needs to be replaced for $65 it takes them 2.5 hours to fix your c

Levart [38]

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3 years ago

Twice the difference of a number c and forty.

dybincka [34]

Answer:

Equation ----> 2(c - 40)

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Step-by-step explanation:

2(c - 40)

= (2c) - (80)

= 2c - 80

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4 0

3 years ago

Read 2 more answers

Determine the slope of the line given the graph 3,-3 and 0,2

BigorU [14]

Answer:

$\displaystyle m = \frac{-5}{3}$

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Algebra I</u>

Coordinate Planes

Reading a coordinate plane
Coordinates (x, y)

Slope Formula: $\displaystyle m = \frac{y_2 - y_1}{x_2 - x_1}$

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify points</em>

Point (0, 2)

Point (3, -3)

<u>Step 2: Find slope </u><em><u>m</u></em>

Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>

Substitute in points [Slope Formula]: $\displaystyle m = \frac{2 + 3}{0 - 3}$
Simplify: $\displaystyle m = \frac{-5}{3}$

7 0

3 years ago