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Eduardwww [97]
3 years ago
14

The length of a rectangle is 3 times its width. The rectangle’s width is 4 m. What is the area of the rectangle? Enter your answ

er in the box. m²
Mathematics
2 answers:
Art [367]3 years ago
7 0

Answer:

48m²

Step-by-step explanation:

L= 3*4

W= 4

Area= L*W

A=(3*4)*4

A=12*4

A=48

bekas [8.4K]3 years ago
5 0
Call the length l and the width w 

We are told:
1. "<span>The length of a rectangle is 3 times its width." i.e.: l=3w
2. "</span><span>The rectangle’s width is 4 m." i.e.: w=4

So, by substitution we have:
l=3w
l=3(4)
l=12m

Then we can use our area formula:
A=lw
A=(12m)(4m)
Area=48m^{2}</span>
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The sum of the ages of Kristen and Ben is 32. Four years ago Kristen was twice as old as Ben. How old are they both now?
Elan Coil [88]

Let us say that:

K = age of Kristen

B = age of Ben

 

From the problem, we make the equations:

eqtn 1: K + B = 32

eqtn 2: (K – 4) = 2 (B – 4)

 

Simplifying eqtn 2:

K – 4 = 2 B – 8

K = 2 B – 4

 

Plugging in this to eqtn 2:

(2 B – 4) + B = 32

3 B – 4 = 32

3 B = 36

B = 12

 

From eqtn 2:

K = 2 B – 4 = 2 (12) – 4 = 20

 

So Kristen is 20 while Ben is 12.

5 0
4 years ago
Which expression below are equivalent to 2(2x + 1)
emmainna [20.7K]

Answer:

4x+2

Step-by-step explanation:

you are doing distributive property so the answer could possibly be: 4x+2

7 0
3 years ago
HELP I NEED HELP ASAP
eimsori [14]

Answer:

I think its D

Step-by-step explanation:

You can rule out A and B because he would be able to throw it farther than 30 ft do that leaves C and D but davis Couldn't throw a 9.1 lb ball 30 ft so the answer is D

3 0
3 years ago
162*0.967=what? {this is multiplication}
Veronika [31]

Answer:

156.654

Step-by-step explanation:

162*.967=156.654

6 0
3 years ago
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Answer:

54 lbs.

Step-by-step explanation:

7 x 6 = 42

3 x 4 = 12

42+12=54

3 0
3 years ago
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