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jekas [21]
3 years ago
5

The length of a rectangle is 2yds longer than its width. If the perimeter of the rectangle is 64 yards, find the length and widt

h
Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
7 0

Answer:

15 yards = width

length = 17 yards

Step-by-step explanation:

Perimeter = 2 x ( length + breadth)

let x = width

length = 2 + x

64  = 2(x + 2 + x)

64 = 2 (2 + 2x)

divide both sides by 2

32 = (2 + 2x)

solve for x

x = 15 yards = width

length = x + 2 + 15 + 2 = 17 yards

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3.) (4 x 9 - 21) \ 3+6^2
nignag [31]

Answer:

41

Step-by-step explanation:

Given Expression:

(4 x 9 - 21) \ 3+6^2

Multiply 4 and 9 to get 36.

36 - 21 / 3 + 6^2

Subtract 21 from 36 to get 15.

15/3 + 6^2

Divide 15 by 3 to get 5.

5+6^2

Calculate 6 to the power of 2 and get 36.

5+36

Add 5 and 36 to get 41.

41

3 0
3 years ago
In his boat, Sheldon can travel 45 mi downstream in the same time that it takes to travel 9 mi upstream. If the rate of the curr
Nataliya [291]

Answer:

9 mph

Step-by-step explanation:

-let x be the speed of current and t be time. The speed equation for both directions can then be represented as:

Speed=\frac{Distance}{Time}\\\\\#Upstream\\(u-6)t=9\\\\\#Donwstream\\\\(u+6)t=45

#Since t is equal in both, we can do away with t.

#We the divide the downstream equation by the upstream equation as:

\frac{u+6}{u-6}=\frac{45}{9}\\\\(u+6)=5(u-6)\\\\u+6=5u-30\\\\4u=36\\\\u=9

Hence, the boat's speed in still water is  9 mph

7 0
3 years ago
Sara can type 90 words in 4 minutes.About how many words would you expect her to type in 10 minutes?
Alexus [3.1K]
90 words in 4 minutes is the same as 45 words in 2 minutes because you divide both sides by 2.  2 goes into 10, 5 times, so 45x5=225.
You can expect her to type 225 words in 10 minutes.
3 0
3 years ago
How do you do this? algebra II
Pavel [41]
3^x=23\\
x=\log_323\approx2.85
6 0
3 years ago
When you solve using the quadratic formula and you get to
kvasek [131]

Answer:

\boxed{if \: b=  - 2 :  {b}^{2}  =  { (- 2)}^{2}  = 4}

8 0
2 years ago
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