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sleet_krkn [62]
3 years ago
5

Please help me out with number 7

Mathematics
1 answer:
Slav-nsk [51]3 years ago
4 0
The answer for number 7 is x=3

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- Let y represent the width of a rectangle and let x represent the rectangle's lengu.
valentina_108 [34]

Answer:

Length: 21 cm and Width:  6cm

Step-by-step explanation:

Let y be the width and x length of the rectangle. We know:

x = 4y -3 -------- eq. 1

54 = 2x + 2y    (Perimeter of the rectangle) ------- eq.  2

Substitute equation 1 in equation 2:

54 = 2(4y-3) + 2y\\54 = 8y - 6 + 2y\\54 + 6 = 8y + 2y\\60 = 10 y\\\\\frac{60}{10}= y\\y = 6

Using the value of y, we find x.

x = 4y - 3\\x = 4(6) -3\\x= 24 - 3\\x = 21

4 0
4 years ago
What technique does the author use most to describe Millicent?
Mkey [24]

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                                hope this helps:)

5 0
3 years ago
Complete the patterns of the equivalent ratios by filling in the gaps.
gayaneshka [121]
21:3
9:3
3:1

there all a 3:1 ratio
4 0
3 years ago
If 5 candy bars cost 3$ how much would 8 cost
pantera1 [17]

Step-by-step explanation:

5candy cost 3$

1 candy cost =5/3=1.66$

8 candy cost= 8×1.66 =13.33$

<h2>stay safe healthy and happy...</h2>
3 0
3 years ago
Read 2 more answers
Solve for x<br> 3х + 2 = 30<br><br> 12<br> 13.33<br> 108<br> 120
Brums [2.3K]

Answer:

9.3

Step-by-step explanation:

check picture for steps

5 0
3 years ago
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