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dsp73
3 years ago
6

The expression 2r^2+18x +40 has a greatest common factor of 2.

Mathematics
1 answer:
avanturin [10]3 years ago
7 0

2(x^2+9x+20)

2(x^2+5x+4x+20)

2{x(x+5)+4(x+5)}

2(x+5)(x+4)

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Why do both ways of writing the number as tens and ones describe the same number
Reika [66]
Because they are both even numbers
3 0
3 years ago
A store is having a sale on walnuts and chocolate chips. For 8 pounds of walnuts and 4 pounds of chocolate chips, the total cost
astra-53 [7]

Answer:

x = $3.50; y = $2.25

Step-by-step explanation:

First, come up with your two equations where x= price of walnuts and y= price of chocolate chips: 8x + 4y = 37 and 3x + 2y = 15. Solve the first equation.

3x + 2y = 15

3x = 15 - 2y

x = (15 - 2y)/3

Plug in the answer to your second equation.

8(15 - 2y)/3 + 4y = 37

(120 - 16y)/3 + 4y = 37

120 - 16y + 12y = 111

120 - 4y = 111

-4y = -9

y = 2.25

Plug in your answer to find <em>x.</em>

3x + 2(2.25) = 15

3x + 4.5 = 15

3x = 10.5

x = 3.5

Check your equation.

1) 3(3.5) + 2(2.25) = 15

10.5 + 4.5 = 15

15 = 15

2) 8(3.5) + 4(2.25) = 37

28 + 9 = 37

37 = 37

4 0
3 years ago
The sum of two numbers is <br> 55<br> and the difference is <br> 21<br> . What are the numbers?
pickupchik [31]
The numbers are seventeen & thirty-eight.
38+17=55 & 38-17=21
4 0
3 years ago
Solve this:<br><br> M + 15.4 = 27.92
larisa86 [58]

Answer:

m= 12.52

Step-by-step explanation:

27.92-15.40=12.52

8 0
2 years ago
Read 2 more answers
Emily has a box where she stores her toys, the box has a height of 24 inches, a length of 40 inches, and a width of 10 inches. W
emmainna [20.7K]

Answer:

2)

Step-by-step explanation:

Volume of box = length * width * height

                         = 40 * 10 * 24

                         = 9600 cubic inches

5 0
4 years ago
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