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Hoochie [10]
3 years ago
15

Perform the operation. (6x2 + 7x + 2) - (-9x2 – 10) Perform the operation help please

Mathematics
2 answers:
natita [175]3 years ago
6 0

Answer:

<em>15</em>x^{2}<em> + 7x + 12</em>

Step-by-step explanation:

(6x^2 + 7x + 2) - (-9x^2 - 10)

Flip the sign:

- (-9x^2 - 10) becomes + 9x^2 + 10

Combine like terms:

6x^2 + 7x + 2 + 9x^2 + 10

6x^2 + 9x^2 = 15x^2

2 + 10 = 12

Put it all together:

15x^2 + 7x + 12

GarryVolchara [31]3 years ago
4 0

Answer: x=92

Step-by-step explanation:

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4x-2y&lt;-2<br><br>a) (2,8) b) (0,1) c) (3,7) d) (5,8)​
amm1812

Answer:

a) (2, 8)  

Step-by-step explanation:

The easiest way is to insert the coordinates into the inequality.

a) (2, 8)

\begin{array}{rcl}4(2) - 2(8) & < & -2\\8 - 16 & < & -2\\-8 &< & -2\\\end{array}\\\textbf{TRUE}

b) (0, 1)

\begin{array}{rcl}4(0) - 2(1) & < & -2\\0 - 2 & < & -2\\-2 &< & -2\\\end{array}\\\text{False}

c) (3, 7)

\begin{array}{rcl}4(3) - 2(7) & < & -2\\12 - 14 & < & -2\\-2 &< & -2\\\end{array}\\\text{False}

d) (5, 8)

\begin{array}{rcl}4(5) - 2(8) & < & -2\\20 - 16 & < & -2\\4 &< & -2\\\end{array}\\\text{False}

You could also plot the inequality and test the points. You would get a graph like the one below. Point (2, 8) is the only one that satisfies the inequality. Points (0, 1) and (3, 7) do not satisfy the inequality because they are on a dashed line.

7 0
3 years ago
Please help me, How much would Howard Steele need to invest today so that he may withdraw $12,000 each year for the next 20 year
adelina 88 [10]
Do u want me to explain or just give u the answer
7 0
4 years ago
If i was born in 2004 how old will i be in 2048
svet-max [94.6K]
2048-2004=44 years old. This assumes the same time of year.
5 0
3 years ago
Need help ASAP please​
victus00 [196]

Answer:

x = 5

Step-by-step explanation:

im too tired to explain just trust me

(5) + 2 = 7

2(5) + 3 = 13

13 * 7 = 91

4 0
3 years ago
Read 2 more answers
WhT is the equation of a circle with a center of (-3,-6)
cluponka [151]

see screenshot

general formula is

r² = (x - x-center)² + (y - y-center)²

note that I choose a radius of 6 arbitrarily. you didn't provide the information about the radius, but just put in yours

7 0
3 years ago
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