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Marysya12 [62]
3 years ago
11

The length of a rectangle is 4 cm longer than the width. If the perimeter of the rectangle is

Mathematics
1 answer:
irinina [24]3 years ago
3 0

Answer:

area = 21

Step-by-step explanation:

20 - 4(2) = 20 - 8 = 12

12/4 = 3

2(3 + 4) + 2(3) = 2(7) + 2(3) = 14 + 6 = 20

length (l) = 7

width (w) = 3

area = lw = (7)(3) = 21

area = 21

i wasnt sure how to explain it but i hope this makes sense

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Natali [406]

Answer:

720$

Step-by-step explanation:

(1000+(230*24))-5800=720

8 0
2 years ago
4, 12, 20 what the common diffrence?? help im timed
sdas [7]
It goes by 8!

If u see, 4 + 8= 12 +(another) 8 = 20! It skips 8 every time!

If u were to continue it, 20 + 8 = 28 and so on!
The difference is the sum of the number totalled.

Hope this helps!
4 0
3 years ago
Janice lost a total of 24 points on her math test. Each question she answered incorrectly was a loss of 3 points. How many quest
NARA [144]

Answer:

let

tp=total points lost

l= points lost

q= question

tp=24

l= 3

if l= 3 and tp= 24 den q= tp÷l

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3 0
3 years ago
Read 2 more answers
A person travels 7 miles in 3 ½ hours, how many miles will he travel in ¼ hour?
aleksandrvk [35]

Answer:

1.6 miles

Step-by-step explanation:

Example 1

It took Markus half an hour to drive home from work.  He averaged 34 miles per hour.  How far does Markus live from his work?

Solution

We are given that it takes 1/2 an hour for the trip.  This is a time:

       t  =  1/2

We are given that he averages 34 miles per hour.  This is a rate:

       r  =  34

We are asked how few he has traveled.  This is a distance.  We use the d=rt equation:

       d  =  rt  

           =  (34)(1/2)

           =  17

Markus lives 17 miles from work.

Now try one by yourself.  If you want to see the answer, put your mouse on the yellow rectangle and the answer will appear.

Exercise 1

The current along the beach is moving towards the south at 1.5 miles per hour.  If a piece of debris is placed into the water, how far will the current take it in 6 hours?

3 0
2 years ago
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The length of a rectangle is 7.8 cm more than 4 times the width. If the perimeter of the rectangle is 94.6 cm, what
Lyrx [107]

Answer:

C, Length = 39.4 cm; width = 7.9 cm

Step-by-step explanation:

The permimeter of a rectangle is 2 times the width + 2 times the length or 2(l + w)

The length is 4 times w plus 7.8.

So:  2w+2(4w+7.8)=94.6

=  2w+8w+15.6=94.6  (Factor out the brackets)

=  10w+15.6=94.6  (Combine like terms)

=  10w=79  (Subtract 15.6 from both sides)

=  w=7.9  (Divide both by 10).

So, the width is 7.9 cm and the length is 39.4 cm (4 * 7.9 + 7.8)

6 0
2 years ago
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