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Tresset [83]
3 years ago
6

What are the answers 1-11

Mathematics
1 answer:
vodka [1.7K]3 years ago
7 0
I can’t see the rest of the page ...
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Please use system of linear equations by elimination OR substitution. I need the work as well please.
Olin [163]

1) P= 64 cm, width = x, length = 14 + x

64 = x + x + 14 + x + 14 + x

64 = 4x + 28

4x = 64 - 28

4x = 36

x = 36/ 4

x = 9

AREA = 9 x (9+14)

Area = 9 x 23

Area = 207 cm

2) smaller no. = y, bigger no. = x

x - y = 3

2x+1/2y=36

Next, multiply 2 to first equation and find y:

2x-2y=6

5/2y=30

y = 12

Substitue y to x-y=3 to find x,

x = 15

3) x = pencil, y = pen

5x + 4y = $6.15

8x + 3y = 9.85$

8x + 7y = ?

5x + 4y = 6.15$ multiply both sides by -3

8x + 3y = 9.85$ multiply both sides by 4

-15x + 32x = (-3)*6.15 + 4*9.85

7x = 19.87 multiply both sides by 8/7

8x = (8/7) x 19.87

Add both equations:

32y - 15y = 8x6.15 - 5*9.58

17y = 1.3

y = 91/17) x 1.3

7y = (7/17)x 1.3

8x + 7y = (8/7) x 19.87 + (7/17) x 1.3

8x + 7y = $23.244

4) 2l + 2w = 0

2 x 2l + 2 x 1/2w = 40 + 16

l+w = 20

4l+w = 56

I’ve got l = 12 and w = 8

5) answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° = \frac{ab}{bc}

but bc = 20 feet.

⇒ tan 55 ° =   \frac{ab}{20}

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

6) The answer is teh attachment !

7) 3x-x+2=4

HOPE THE ANSWERS HELP!! PL MARK ME BRAINLIEST!

3 0
2 years ago
ALGEBRAIC EXPRESSION, FACTORIZATION AND IDENTITIES... pls help me in this... (2)​
boyakko [2]

Step-by-step explanation:

i was busy so i did this much ...will solve later

6 0
3 years ago
Please help me! Thanks
Yuki888 [10]

Answer:

The answer is D. 22

Step-by-step explanation:


4 0
3 years ago
Could you tell me the answer about this?
wolverine [178]

Answer:

x is 70°

Step-by-step explanation:

80 + 55= 135

180-135 = 45

45 +45 =90

180-90=90

80+80= 160

180-160= 20

20 +90= 110

180-110 = 70

x is 70

7 0
2 years ago
4*7, 5384 divided by 7538 ​
Darya [45]

Answer:40.00212258

Step-by-step explanation:

(4 x 75384) ➗ 7538

301536 ➗ 7538=40.00212258

7 0
3 years ago
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