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jasenka [17]
2 years ago
15

the length of a rectangle is 4a + 5, the width of the same rectangle is 2a -3 if the perimeter of the rectangle is 76 what is th

e value of a?
Mathematics
1 answer:
viktelen [127]2 years ago
7 0

Answer:

Here

perimeter=76

length =4a+5

breadth=2a-3

we know,

perimeter=2(length+breadth)

76=2(4a+5+2a-3)

76=2(7a+2)

76=14a+4

76-4=14a

72=14a

72÷14=a

a=5.14

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QUICK PLZZ!!! If m<ABD = 71°, what are m<ABC and m<DBC?​
suter [353]

Answer:

m<ABC = 45

m<DBC = 34°

Step-by-step explanation:

Given:

m<ABD = 79°

m<ABC = (8x - 3)°

m<DBC = (5x + 4)°

Step 1: Generate an equation to find the value of x

m<ABC + m<DBC = m<ABD (angle addition postulate)

(8x - 3) + (5x + 4) = 79

Solve for x

8x - 3 + 5x + 4 = 79

13x + 1 = 79

Subtract 1 from both sides

13x + 1 - 1 = 79 - 1

13x = 78

Divide both sides by 13

x = 6

Step 2: find m<ABC and m<DBC by plugging the value of x into the expression of each angle

m<ABC = (8x - 3)°

m<ABC = 8(6) - 3 = 48 - 3 = 45°

m<DBC = (5x + 4)°

m<DBC = 5(6) + 4 = 30 + 4 = 34°

Step-by-step explanation:

!!

7 0
3 years ago
If you write an expression to represent the following
dedylja [7]
5.25x + 3.50 = total
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3 years ago
PLEASE HELP! THANK YOU!
Bezzdna [24]

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mmm

3 0
3 years ago
What is the length of the paintbrush in centimeters?
lions [1.4K]
0.1626 WRONG ANSWER
4 0
3 years ago
Read 2 more answers
Please help! Will mark branliest!
ElenaW [278]

a(1) = -6 +(1-1) (1/5)

  = -6+0

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a(4) = -6 +(4-1)*(1/5)

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a(10) = -6 + (10-1)*1/5

        = -6 +9/5

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3 0
3 years ago
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