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Nady [450]
3 years ago
14

What is the product? (2x - 1)(x+4) O 2x2-4 O 2x2 + 4 2x2 + 7 x-4 2x2 - 7x - 4

Mathematics
1 answer:
neonofarm [45]3 years ago
4 0

Answer:

,

Step-by-step explanation:

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What is 28.09 to the nearest tenths
Zina [86]
The answer is 28.1 tenths are the first number to the right of the decimal point
5 0
3 years ago
Read 2 more answers
Solve the rational equation x+3/3x-2-x-3/3x+2=44/9x^2-4
Drupady [299]

Answer:

x=2

Step-by-step explanation:

When given the following equation;

\frac{x+3}{3x-2}-\frac{x-3}{3x+2}=\frac{44}{9x^2-4}

One has to solve for the variable (x). Remember, when working with fractions, one must have a common denominator in order to perform operations. Since the denominators on the left side of the equation are unlike, one must change them so that they are like denominators. Multiply each fraction by the other fraction's denominator on the respective side. Remember to multiply both the numerator and denominator by the value to ensure that the equation remains true.

=\frac{x+3}{3x-2}*(\frac{3x+2}{3x+2})-\frac{x-3}{3x+2}*(\frac{3x-2}{3x-2})=\frac{44}{9x^2-4}

Simplify,

=\frac{(x+3)(3x+2)}{(3x-2)(3x+2)}-\frac{(x-3)(3x-2)}{(3x+2)(3x-2)}=\frac{44}{9x^2-4}\\\\=\frac{3x^2+11x+6}{9x^2-4}-\frac{3x^2-11x+6}{9x^2-4}=\frac{44}{9x^2-4}

Distribute the negative sign to simplify the left side of the equation;

=\frac{3x^2+11x+6}{9x^2-4}-\frac{3x^2-11x+6}{9x^2-4}=\frac{44}{9x^2-4}\\\\=\frac{3x^2+11x+6-(3x^2-11x+6)}{9x^2-4}=\frac{44}{9x^2-4}\\\\=\frac{3x^2+11x+6-3x^2+11x-6}{9x^2-4}=\frac{44}{9x^2-4}\\\\=\frac{22x}{9x^2-4}{=\frac{44}{9x^2-4}

Since the denominators on opposite sides of the equation are like, one can now ignore the denominators,

=22x=44

Inverse operations,

=22x=44

   ÷2       ÷2

     x=2

4 0
3 years ago
If 4/5 litter of gas runs 12Km how long will 20 litter of gas run?
Anna35 [415]

Answer:

300 Kilo-meters

Step-by-step explanation:

Since 4 / 5 of a liter runs for 12 kilo-meters and you need to find how much 20 liters would run, you need to find how much a liter can run for.

L is the variable for which how much a liter can run for. Which is what we need to solve.

4 / 5 x L =  12

To isolate L, you need to multiply both sides by 5/4 since multiplying a number by its reciprocal produces one. Note: A reciprocal is a number where the denominator and numerator are switched. Example: 2/3 and 3/2 multiplying it with each other get 6/6 which is 1.

4 / 5 x 5 / 4 x L = 12 x 5 / 4

L = 12 x 5 / 4

L  = 60/4

L = 15

Now you know that each liter is worth 15 kilo-meters and you need to find how much 20 liters will run for.

20 x L = Kilo's Ran

20 x 15 = Kilo's Ran

300 = Kilo's Ran

20 Liters will run for 300 Kilo-meters.

I Hope This Helps You :)

7 0
3 years ago
Clara played a video game before she left the house to go on a walk. She started with 0 points, lost 6 points 3 times, won 4 poi
anyanavicka [17]

Answer:

-16 points

Step-by-step explanation:

0 + 3(-6) + 4 -2 = 0 - 18 + 4 -2 = -16

start with 0, negative 6 points 3 times, won 4 points lost 2 more.

3 0
2 years ago
Can someone help me with this it’s urgent what’s the answer or property of this problem C?
ELEN [110]

Answer:

yes they both equal 2 1/2

4 0
3 years ago
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