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Softa [21]
3 years ago
11

I don’t understand 7B please help...

Mathematics
2 answers:
joja [24]3 years ago
7 0

Answer:

see explanation

Step-by-step explanation:

let w represent the width then length = w + 7

The perimeter of the rectangle = 2w + 2(w + 7) = 2w + 2w + 14 = 4w + 14

The perimeter is given as 54 m, thus

4w + 14 = 54 ( subtract 14 from both sides )

4w = 40 ( divide both sides by 4 )

w = 10

Thus

width of playground = w = 10 m

length of playground = w + 7 = 10 + 7 = 17 m

8_murik_8 [283]3 years ago
5 0

Answer:

17m × 10m

Step by step explanation:

Total edging = Perimeter

2[x + (7+x)] = 54

2x + 7 = 54/2

2x + 7 = 27

2x = 20

x = 10

7 + x = 17

Dimensions: 4x - y is less than or equal to 4 and 2x - 2y is greater than or equal to 3

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There are 15 cards numbered 1 through 15. What is thee probability that you choose a 5 or a 9
Trava [24]

Answer:

2/15

Step-by-step explanation:

There is only one card with the number 9, and only one with the number 5.

So 5 and 9 are two out of fifteen (2/15).

8 0
3 years ago
Which of the following best describes the algebraic expression 7(x-9) +14 ?
forsale [732]

Answer:

Fourteen more than seven times the quantity of a number minus nine.

Step-by-step explanation:

8 0
3 years ago
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alexira [117]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
Ishaan is 2 times as old as Christopher. 35 years ago, ishaan was 7 times as old as Christopher
Natalija [7]

Answer:The present age of both of them are Christopher = 42 years, and Ishaan = 84 years.

Step-by-step explanation: Solution:

Let present age of:

Christopher =  

x

yrs

Ishaan =  

2

x

yrs ( given that Ishaan is 2 times as old as Christopher)

35 yrs ago:

Age of Christopher = (

x

- 35)yrs

Age of Ishaan = (

2

x

- 35) yrs

According to question, 35 yrs back, Ishaan was 7 times older than Christopher.

Therefore

7 X (

x

- 35) = (

2

x

- 35)

7

x

- 245 =  

2

x

- 35

7

x

-  

2

x

= 245 - 35

5

x

= 210

x

= 42

So present age of Christopher =  

x

= 42 yrs

&

Present age of Ishaan =  

2

x

= 84 yrs

Check your solution:

As 84 is 2 times of 42 so Ishaan is 2 times older than Christopher.

35 yrs ago, Christopher was (42 - 35) = 7 yrs old and Ishaan was (84 - 35) = 49 yrs old so Ishaan was 7 times older than Christopher then.

6 0
3 years ago
Put these numbers in order from least to greatest. I'm too lazy to do it.
Usimov [2.4K]

Answer:

1,3,4,5,6,10,11,14,16,17,18,20

Step-by-step explanation:

I've been there so many times. Hope you have a great day!

3 0
3 years ago
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