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Vlad [161]
3 years ago
10

A rectangle has a area of 45 square units.The length is 4 units less than the width.What are the dimensions of the rectangle

Mathematics
1 answer:
Rom4ik [11]3 years ago
5 0
A = lw 

A= 45 unit²

l= w-4

45= (w-4)w

45=w²-4w

w²-4w-45=0

(w-9)(w+5)=0

w=9, -5 so 9 is the width

l=9-4 =5 is the length

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sertanlavr [38]
Subtract 9 from both sides

b = -12 - 9

simplify -12 - 9 

Answer: b = -21

9 + -21 = -12 is true.

simplify brackets

simplify q + -9 to q - 9

add 9 to both sides

simplify 12 + 9 to 21

q = 21

21 + -9 = 12 is true.
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What is the scale factor of triangle ABC to triangle DEF? A. 1/3 B. 1/2 C. 3 D. 2
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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

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2 years ago
What is the volume of a right circular cylinder with a diameter of 46. 25 cm and a height of 18. 5 cm? Enter your answer in the
Sedbober [7]

The volume of the right circular cylinder is 31064.54 cm³.

What is the formula for the volume of cylinder?

Formula:

V = πr²h.............. Equation 1

Since,

V = Volume of the right circular cylinder

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h = height of the cylinder.

We have given that,

r = 46.25/2 = 23.125 cm

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π = 3.14

We have to calculate volume of right circular cylinder.

Therefore,

Substitute these values into equation 1

V = 3.14(23.125²)(18.5)

V = 31064.54 cm³

Therefore

The volume of the right circular cylinder is 31064.54 cm³.

Learn more about the volume of a cylinder here:

brainly.com/question/1082469

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Step-by-step explanation:

3 0
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