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aliya0001 [1]
3 years ago
8

A model car is 8 inches long. If it was built with a scale of 2 in. : 5 ft., then how long is the real car? (will give brainlies

t!!)
20 ft.

40 ft.

45 ft.

37 ft.
Mathematics
1 answer:
serious [3.7K]3 years ago
7 0
The real car would be 20ft
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Line a is purpendicular to line b. if the slope of line a is 7 than what is the slope of line b
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The slope of the perpendicular line b is -1/7 if the slope of the perpendicular line a is 7.

According to the question,

Line 'a' is perpendicular to the line 'b'. If the slope of the line 'a' is 7.

The condition of slopes if two lines are perpendicular m₁ m₂ = -1

(7)(m₂) = -1

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Hence, the slope of the perpendicular line b is -1/7 if the slope of the perpendicular line a is 7.  

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Is 237.5 greater than 2 8/24
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Which pyramid has a greater volume, and how much greater is its volume? A rectangular pyramid on the left with a base of 7 inche
Vanyuwa [196]

Answer:

Which pyramid has a greater volume? the first pyramid (left pyramid) with a volume of 42in^3

How much greater is its volume? its volume is 2in^3 greater than the second (right) pyramid

Step-by-step explanation:

Equation to find the volume of a pyramid:

V=\frac{A_bh}{3}

where A_b is the area of the base, and h is the height.

  • First pyramid:

length: l=7in

width: w=6in

height: h=3in

Area of the rectangular base:

A_b=lw\\A_b=7in*6in\\A_b=42in^2

Volume of the first pyramid:

V_1=\frac{A_bh}{3}\\ \\V_1=\frac{42in^2*3in}{3} \\\\V_1=\frac{126in^3}{3} \\\\V_1=42in^3

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height: h=10in

Area of the rectangular base:

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Volume of the second pyramid:

V_2=\frac{A_bh}{3} \\\\V_2=\frac{12in^2*10in}{3}\\ \\V_2=\frac{120in^3}{3} \\\\V_2=40in^3

Which pyramid has a greater volume? the first pyramid (left pyramid) with a volume of 42in^3

How much greater is its volume? its volume is 2in^3 greater than the second (right) pyramid

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