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pshichka [43]
3 years ago
15

Simplify 7x²+3x-5x²-10x

Mathematics
1 answer:
solmaris [256]3 years ago
3 0

Answer:

2x²-7x

Step-by-step explanation:

7x²-5x²=2x²

10x-3x=7x

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(2x^4 - 6x^2+8) + (-x^4+ 2x^2-12)
Neko [114]
(2x^4 - 6x^2+8) + (-x^4+ 2x^2-12)
=2x^4-6x^2-x^4+2x^2-12
=x^4-4x^2-12

Just watch your signs when opening up the brackets and then collect like terms.
3 0
4 years ago
What is 1/8 divided by 2
slavikrds [6]
When dividing 1/8 by 2
we have to first take the reciprocal of 2 
reciprocal is when the numerator and denominator are exchanged
2 when written as a fraction is \frac{2}{1}
we need to find the reciprocal of \frac{2}{1} which is \frac{1}{2}
then 
\frac{1}{2} of \frac{1}{8}
when 'of' function is used it means to multiply the 2 fractions 
when multiplying fractions multiply the numerators by numerators and multiply denominators by denominators 
is \frac{1}{2} * \frac{1}{8} =  \frac{1}{16}
answer is \frac{1}{16}

4 0
4 years ago
Read 2 more answers
If x=15 and y=45, what is the value of x if y=57
Ierofanga [76]

Answer:

x = 15

y = 45

y =45 --- 15 = x

y = 57 ---- ?

57 × 15 / 45

57/3

19

7 0
3 years ago
Grapes cost $2.59 per pound. James buys a bag of grapes that weighs 4.73 pounds.
Anna35 [415]

2.59 * 4.73 = cost of grapes

2.59 * 4.73 = 12.2507

$12.25 for that bag

5 0
2 years ago
Read 2 more answers
What is the equation of this trend line?<br><br> Enter your answers by filling in the boxes.
zhuklara [117]

Answer:

k=-2j+24

Step-by-step explanation:

Take two points from the graph

(0,24) and (6,12)

Find the slope

The formula to calculate the slope between two points is equal to

m=\frac{k2-k1}{j2-j1}

substitute

m=\frac{12-24}{6-0}

m=\frac{-12}{6}=-2 ---> is negative because is a decreasing function

Find the equation of the line in slope intercept form

k=mj+b

we have

m=-2\\b=24

Note: The y-intercept is given (0,24)

substitute

k=-2j+24

3 0
4 years ago
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