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Mamont248 [21]
3 years ago
11

Simplify the following algebraic expression 2(x^2+3x)-10(x^2+2)

Mathematics
1 answer:
4vir4ik [10]3 years ago
6 0

Answer:

-8x^2+6x-20

Step-by-step explanation:

2(x^2+3x)-10(x^2+2)

2x^2+6x-10x^2-20

(2x^2-10x^2)+6x-20

-8x^2+6x-20

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JulijaS [17]

The answer is m = -59/42

Step by step explanation is in the image below.

4 0
3 years ago
Franklin bought 2 pencils for $0.79 each, 4 notebooks for $3.29 each, and a comic book for $1.29. How much change will he receiv
Advocard [28]
3.97 is the answer i think
5 0
3 years ago
Read 2 more answers
Help please? even if someone gave me the steps to figure the answer myself, that'd be great​
swat32

Answer:

The height is 28.57 cm.

The surface area is 9,628 cm^2.

Step-by-step explanation:

I assume the cooler is shaped like a rectangular prism with length and width of the base given, and with an unknown height.

volume = length * width * height

First, we convert the volume from liters to cubic centimeters.

60 liters * 1000 mL/L * 1 cm^3/mL = 60,000 cm^3

Now we substitute every dimension we have in the formula and solve for height, h.

60,000 cm^3 = 60 cm * 35 cm * h

60,000 cm^3 = 2,100 cm^2 * h

h = (60,000 cm^3)/(2,100 cm^2)

h = 28.57 cm

The height is 28.57 cm.

Now we calculate the internal surface area.

total surface area = area of the bases + area of the 4 sides

SA = 2 * 60 cm * 35 cm + (60 cm + 35 cm + 60 cm + 35 cm) * 28.57 cm

SA = 9,628 cm^2

The surface area is 9,628 cm^2.

8 0
3 years ago
You gave $1,500 in bonuses to two employees. one employee received $200 more than the other employee.
Allushta [10]
1,500
+ 200
       = 1,700 
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8 0
3 years ago
Please help me on this one
devlian [24]

Answer:

option a

step-by-step explanation:

To rationalize the expresion we need to multiply and divide the expression by the conjugate of the denominator as follows

sqrt(9) / (sqrt(3) + sqrt(x)) = sqrt(9) ((sqrt(3) - sqrt(x)) / ((sqrt(3) + sqrt(x))(sqrt(3) - sqrt(x)))

3((sqrt(3) - sqrt(x)) / (3 - x)

So the result es option a:

(3sqrt(3) - 3sqrt(x)) / (3 - x)

4 0
3 years ago
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