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Mademuasel [1]
2 years ago
5

SOMEONE PLSLPLSSLSLS HELP ITS JUST 3 QUESTIONS BRO PLEASE ITS SO CONFUSING ILL BRAINLIST.

Mathematics
1 answer:
Vinil7 [7]2 years ago
5 0

Step-by-step explanation:

a) Perimeter is equal to 2w + 2L

2(3x + 4) + 2(x + 3)

6x + 8 + 2x + 6

8x + 14

b) Put 5 in x's place

8×5 + 14

40 + 14

54

c) Area = (3x + 4) * (x + 3)

Put 4 in x's place

(3×4 + 4) * (4 + 3)

12 + 4 * 7

16 * 7

112

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The average of 4 numbers is 15 , the sum of 3 numbers is 14 what is the fourth number
Nostrana [21]

Answer:

46

Step-by-step explanation:

(14+x)/4 = 15

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7 0
4 years ago
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F(x) = x+4<br> g(x) = 3x2 - 7<br><br><br><br> Find (f•g)(x)
Marizza181 [45]

Answer:

3x³ + 12x² - 7x - 28

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6 0
3 years ago
What is the area of a rectangle that is 4 1/2 cm long and 2 5/9 cm wide? Solution: Answer: What is the area of a square that has
Roman55 [17]

Answer:

1) 23/2

2) 529/25

Step-by-step explanation:

Transformation:

4\frac{1}{2}  = \frac{(2*4) + 1}{2}  = \frac{9}{2}

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A = \frac{9}{2} * \frac{23}{9}  = \frac{23}{2}

-----------------------------

Transformation:

4\frac{3}{5} = \frac{(5*4) + 3}{5}  = \frac{23}{5}

A = (\frac{23}{5})^{2}  = \frac{529}{25}

6 0
3 years ago
a grandmother says her grandson is two years older than her granddaughter and that together they are at least 12 years old how o
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