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MA_775_DIABLO [31]
3 years ago
8

Please answer question 11

Mathematics
1 answer:
irinina [24]3 years ago
6 0

Answer:

I'm pretty sure it's 4

Step-by-step explanation:

association property of addition involves well addition and that's what it shown in y+0=y

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Gina is a certain age (g). Gina's older sister is twice Gina's age. Gina's brother is half Gina's age. The sum of their ages is
aliina [53]

Answer:

Gina is 12 years old

Step-by-step explanation:

First,  we will have to write these statements mathematically and then solve.

Let Gina's age be x, let Gina's brother's age be y and let Gina's sister's age be z.

The second statement"Gina's older sister is twice Gina's age" can be mathematically written as: z =2 x ---------------------------(1)

The next statement "Gina's brother is half Gina's age" can be mathematically written as y = \frac{x}{2} ---------------------------------------(2)

Then the next statement "the sum of their ages is 42" can be mathematically written as: x + y + z = 42 ----------------------------(3)

We can now proceed to solve;

Substitute equation (1) and equation(2) into equation (3)

x + y + z = 42

x +  \frac{x}{2} + 2x = 42

Multiply through by 2

2x + x + 4x = 84

7x = 84

Divide both-side of the equation by 7

\frac{7x}{7} = \frac{84}{7}

x = 12

Therefore, Gina is 12 years old

7 0
3 years ago
25x-5 but the expression as a product
Sever21 [200]

Answer:5(5x-1)

Step-by-step explanation: for a product the equation above

25x-5

Since 5 is divisible by 25

25/5=5

5/5=1

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3 0
3 years ago
When Anna was born 16 years ago, her small town of Lewisville had a population of 15,000. The population has increased 11% each
Alex17521 [72]
15.000 ÷ 100

150 = 1%

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1650 x 16 = 26.400

26.400 + 15.000 = 41.400

So 41.400 is the population number now.
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3 years ago
Katalene wants to make a quilt in the shape of a golden rectangle. She only has enough binding material for a quilt with a perim
lara31 [8.8K]
All of these choices would result in a 29-ft perimeter for the quilt.
But choice-b is significantly closer to the golden ratio than the others are.
Golden Ratio = (1/2) (1 + √5)  =  1.618... (rounded)
Choice a).  1.665
Choice b).  1.617 the answer is "B"
Choice c).  1.526
Choice d).  1.5709 
 
4 0
3 years ago
The local craft fair charges the vendors a flat rate of $20 plus $5 for each hour that they spend at the fair. If the vendor owe
Nonamiya [84]

Answer:He remained in the craft fair for 7 hours

Step-by-step explanation:

3 0
3 years ago
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