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Oliga [24]
3 years ago
13

Ms. galendez's backyard is a rectangle whose length is twice the width. if the perimeter is 720 ft, what are the dimensions of h

er yard
Mathematics
1 answer:
Talja [164]3 years ago
3 0

Answer:

120ft and 240ft

Step-by-step explanation:

720 = 2L + 2W

Since L = 2W, we get

720 = 2(2W) + 2W

6W = 720

W = 120

L = 2W = 2(120) = 240

The dimensions of the yard are 120 feet and 240 feet

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Find the distance between the points (3, 8) and (0,4).
Bingel [31]

Answer:

5

Step-by-step explanation:

(3,8) (0,4)

X1 = 3    X2 = 0

Y1 = 8    Y2 = 4

D=\sqrt{(X1-X2)^{2}+ (Y1-Y2)^{2}  }

D= \sqrt{(3-0)^{2} + (8-4)^{2} }

Do what's in the parentheses so...

  1. 3-0= 3
  2. 8-4= 4

Now plug it in!

D= \sqrt{(3)^{2}+(4)^{2}  }

Now you are going to finish the parentheses so...

  1. (3)^2= 9
  2. (4)^2= 16

Plug that in so that you have this...

\sqrt{9+16}

Add 9+16 to get...

\sqrt{25}

Then you are going to find the number or numbers that make this a perfect square...

\sqrt{25}= 5

So 5 is your answer

7 0
3 years ago
The volleyball team raised $350 from its fundraiser. It wants to buy jerseys and volleyballs. The jerseys cost $12 each, and the
Anna71 [15]

Answer:

6

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Does 2 1/4-6/7=1 3/4
dimulka [17.4K]

Answer: No, it would be 2/5.


Step-by-step explanation: 2 1/4 - 6/7 is equal to about 1.4 when rounded to the nearest tenth. 1.4 as a fraction would be 4/10. 4/10 is simplified to 2/5 by dividing each number by 2.


7 0
3 years ago
Verify that -tan2x = (2tanx) / (sec^2x - 2)
sashaice [31]

Answer:

Below.

Step-by-step explanation:

- tan 2x =   -2tanx / (1 - tan^2x)

Using the identity  tan^2x = sec^2x - 1 and substituting for tan^2x:

- tan 2x = -2 tanx / (1 - (sec^2x - 1))

=   2 tanx / ( - 1(sec^2x + 2))

= 2 tan x / (sec^2 x - 2)

8 0
3 years ago
I need to know plz help
zzz [600]

Answer:

122in^2

Step-by-step explanation:

A= 10x10x3.14 = 314in^2

Ar= 12x16= 192in^2

Asr= 314-192= 122in^2

8 0
3 years ago
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