A rectangular prism measures 225 inches by 315 inches by 2 inches. How many cubes with edge length 15 inch fit in the prism? Sho
1 answer:
Answer:
34 Cubes
Step-by-step explanation:
<u>Step 1: </u>Find the Volume of the Rectangular Prism
The dimensions of the rectangular prism are: 225 inches by 315 inches by 2 inches.
Volume of the Rectangular Prism = 225*315*2=141750 Cubic Inches
<u>Step 2:</u> Find the Volume of the Cube
Edge length of the cube, s=15 Inch
Volume of a Cube =
Volume==3375 Cubic Inches
<u>Step 3: </u>Determine how many cubes fit in the prism
To find out how many cubes fit in the rectangular prism, divide the volume of the rectangular prism by the volume of the cube.
Number of Cubes =Volume of the Rectangular Prism ÷ Volume of Cube
=141750 ÷ 3375
=34
34 Cubes will fit in the rectangular prism.
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The equations and inequality expresses the relationship between the variables.
The correct responses are;
- First part; The rule that represent the function is; <u>y = 0.5·x - 1</u>
- Second part; the correct option is the inequality; <u>2·n - 6 ≥ 35</u>
- Third part;
- Fourth part; <u>Table 4</u>
- Fifth part;
- Sixth part; <u>75·w + 55 ≤ 400</u>
Reasons:
First part;
The difference between y-values following a change in 2 units of the x-value is a constant, and is equal to 1;
The rate of change of the function, <em>m</em>, is therefore;
The slope and intercept form of the equation of the function is therefore;
y - 3 = 0.5·(x - 8) = 0.5·x - 4
y = 0.5·x - 4 + 3 = 0.5·x - 1
The rule that represent the function is; <u>y = 0.5·x - 1</u>
Second part;
2·n represent twice the number
The difference between twice the number and 6 = 2·n - 6
At least 35 = ≥ 35
Therefore, the inequality is; <u>2·n - 6 ≥ 35</u>
Third part;
The given quadratic equation is; a·x² + b·x + c = 0
Therefore;
Fourth part;
The best correct option is table 4, given that the table is as follows;
Fifth part;
The y-intercept of the graph is -0.5
The slope is -4 ÷ 8 = -0.5
Therefore, the equation is; y = -0.5·x - 4
The shaded area is the area lower than the y-values, with broken lines (indicating < relationship) which gives, the correct inequality as follows;
Sixth part;
The amount Jordan part-time job pays = $75
The amount he has already saved = $55
The cost of the iPhone = $400
Let <em>w</em> represent the number of weeks Jordan works, at his part-time job to purchase the iPhone, we have;
<u>75·w + 55 ≤ 400</u>
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