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IgorC [24]
3 years ago
11

What is the answer of: (10+2b)^2

Mathematics
1 answer:
scZoUnD [109]3 years ago
5 0

Answer:

10^2+2×2b×10+2b^2 = 100+40b+2b^2

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Write a rule for the linear function in the graph
Maurinko [17]

Gradient = \frac{y_{1}-y_{2}}{x_{1}-x_{2}}

\frac{5-1}{2-1} \\\frac{4}{1}

This means the gradient is 4x.

The y intercept is where the line crosses the y axis. We can see this is at -3.

<h2>Rule: <u>y = 4x -3</u></h2>

Substitute your values to check if it's right.

y = 4x -3

5 = 4(2) - 3

5 = 8 - 3

5 = 5

1 = 4(1) - 3

1 = 4 - 3

1 = 1

7 0
3 years ago
Malik buys and sells car parts. He bought 2 tires for $45.00 each and later sold them for $65.00 each. He bought 3 rims for $85.
scZoUnD [109]

Answer: Malik's total profit is $213

Step-by-step explanation:

2 * 45 = 90

2 * 65 = 130

130 - 90 = 40

3 * 85 = 255

3 * 126 = 378

378 - 255 = 123

5 * 5 = 25

5 * 15 = 75

75 - 15 = 50

50 + 40 + 123 = 213

3 0
3 years ago
there are multiple chickens and rabbits in a cage. There are 72 heads and 200 feet inside the cage. How many chickens are in the
mezya [45]
44 chicken and 28 rabbits

Given:
chicken head + rabbit head = 72 heads
chicken feet + rabbit feet = 200 feet

c + r = 72
2c + 4r = 200

find the value of c using the 1st equation:
c = 72 - r

substitute c by its value in the 2nd equation:
2c + 4r = 200
2(72-r) + 4r = 200
144 - 2r + 4r = 200
2r = 200 - 144
2r = 56
r = 56/2
r = 28

c = 72 - r
c = 72 - 28
c = 44

c = 44 ; r = 28

To check:
2c + 4r = 200
2(44) + 4(28) = 200
88 + 112 = 200
200 = 200
8 0
4 years ago
a group of four students is performing an experiment with salt each student must a 3/8 teaspoon of salt to a solution the group
Natalka [10]
The group with need to fill the spoon a total of 3 times this is because 1/8+1/8+1/8=3/8
7 0
3 years ago
Read 2 more answers
Can someone help with problems 22, 23 &amp; 25
Sonja [21]

#22: 10.2 gallons for $2.59 each = 10.2 x 2.59, which rounded is $26.42.

#23: 12 pieces that are 6.45 in wide each = 12 x 6.45, which is 77.4 in.

#25: Aaron started with $38.

$22.47 + $8.53 + $6.50 is $37.50.

38.00 - 37.50 is .50 or 50 cents.


Hope that helps!

5 0
3 years ago
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