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padilas [110]
3 years ago
7

PLEASE HELP ASAP 25 PTS + BRAINLIEST FOR RIGHT/BEST ANSWER

Mathematics
1 answer:
kherson [118]3 years ago
8 0

\left\{\begin{array}{ccc}x=3y+9&\text{substitute it to the second equation}\\9-x=-3y\end{array}\right\\\\9-(3y+9)=-3y\\\\9-3y-9=-3y\qquad\text{add 3y to both sides}\\\\9-9=0\\\\0=0\qquad\mathbb{TRUE}\\\\Answer:\ \boxed{infinite\ solutions}

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The perimeter of a rectangle is 168 m. Its length is five times its width. Find the length and width.
almond37 [142]

Answer:

  • Length of rectangle = 63 m
  • Width of rectangle = 21 m

Step-by-step explanation:

<u>Given:</u><u> </u>

  • Perimeter of rectangle = 168 m
  • Length of rectangle is five times the width

<u>To </u><u>Find:</u><u> </u>

  • Length and Width

<u>Solution:</u><u> </u>

Let's assume width of rectangle x m and length of rectangle be 3x m. To calculate the dimensions of the rectangle we will use the formula of Perimeter of the rectangle

Perimeter of rectangle = 2(L + B)

Substituting the required values:

→ 168 = 2(3x + x)

→ 168 = 2(4x)

→ 168/2 = 4x

→ 84 = 4x

→ 84/4 = x

→ 21 = x

Hence,

  • Length of the Rectangle = 3x = 3(21) = 63 m
  • Wdith of the rectangle = x = 21 m
4 0
3 years ago
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Giving stars and thanks sorry my last upload was weird lol .
kykrilka [37]
Hello!

corresponding sides and angles are sides and angles that are the same

Angle A corresponds to angle R

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4 0
4 years ago
Please hurry help thank u
jenyasd209 [6]

Answer:

choice 4

similar polygons have to compared at a similar level. so choice 4

3 0
3 years ago
HELP! i will give Brainly, if anyone could give me the full equation :) only answer if you’re sure...
r-ruslan [8.4K]
Y= 3/4+ 3 because your y-isn’t is at 3 and you are going by 3 over 4
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