How do you know if an equation represents a proportional relationship?

Answers

Answer 1

Answer:

If it creates a straight line on a graph, it is proportional

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ken bought 3 and 1/5 gallons of milk that cost $2.20 per gallon. what was the total cost of the milk? IM GIVE 100!!! HELPPPPP

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$7.04 cos 3.2 x 2.20 =7.04

Need help with 7,8,9,10 please help me

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make sure and use distributive property on the ones multiplying by what’s in the parentheses

The original price of a skateboard is $50. The sale price includes a 20% discount. What is the sale price

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50 × 0.8 = $40 is the sale price

What is 50 sub by 20?
Well, your answer would be 10.

It wont add up but this is your answer
10
.........................................................
Hope this helped! Have a nice day.

Can anybody help me with this question?

Answers

For number 16 we need to write the data as a ratio then convert to a unit rate (amount per 1)...

308/14 = x/1

Cross multiply

14x = 308
x = 308/14
x = 22

So the fuel efficiency is
22 miles per 1 gallon or

22/1

For number 17, since the car was driven at 48 mph, we just have to divide distance driven by speed to get how long it took...

288 miles ÷ 48 mph =

6 hours

Describe how to model 2-digit by 2-digit multiplication using an area model ANSWER NOW FOR 20 POINTS

Answers

Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models. Properties of Multiplication and Division and Problem Solving with Units of 2–5 and 10. Multiplication and Division with Units of 0, 1, 6–9, and Multiples of 10Multi-Digit Whole Number and Decimal Fraction Operations.

Answer:

The steps are shown below:

Step-by-step explanation:

We can draw the area model for 2-digit by 2-digit multiplication by using the following steps:

Step 1: First write the multiplicands in expanded form.

For example: 26 as 20 and 6, and 36 as 30 and 6.

Step 2: Now, Draw a 2 × 2 grid, and write the terms of one of the multiplicands on the top of the grid. One on the top of each cell.

Step 3: Write the terms of the other multiplicand on the left of grid.

Step 4: Write the product of ones and tens in respective cell.

For example: 26×36

20 6

30| 600 180

6 | 120 36

Now add them: 600+180+120+36=936

A horse corral is situated on a triangular plot of land. Two sides of the plot are 150 feet long and they meet at an angle of 55°. A fence is to be placed along the perimeter of the corral. How much fencing material is needed?a. 125 ft
b. 138.5 ft
c. 288.5 ft
d. 438.5 ft