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Nikitich [7]
3 years ago
12

3x>9

Mathematics
1 answer:
Sphinxa [80]3 years ago
3 0

Answers to the entire test:

Step-by-step explanation:

1. C. a<b

2.A. x >_0

3. A. The product between 3 and a number is greater than 9

4. B. The difference of 16 and the product of 5 and a number is no less than 1

5.B. 6(x-4)<_20

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Factor 9x^2+66xy+121y^2
Korvikt [17]
Answer: (3x + 11y)^2

Demonstration:

The polynomial is a perfect square trinomial, because:

1) √ [9x^2] = 3x

2) √121y^2] = 11y

3) 66xy = 2 *(3x)(11y)

Then it is factored as a square binomial, being the factored expression:

 [ 3x + 11y]^2

Now you can verify working backwar, i.e expanding the parenthesis.

Remember that the expansion of a square binomial is:

- square of the first term => (3x)^2 = 9x^2
- double product of first term times second term =>2 (3x)(11y) = 66xy
- square of the second term => (11y)^2 = 121y^2

=> [3x + 11y]^2 = 9x^2 + 66xy + 121y^2, which is the original polynomial.

7 0
4 years ago
(3/5y^4)^-2 simplify this please
Usimov [2.4K]
(\frac{3}{5}y^4)^{-2}=(\frac{5}{3})^2y^{4\times-2}=\frac{25}{9y^8}
8 0
4 years ago
1/3 How many minutes does April jump rope 1 day? 1 week. Please tell the answer for 1 day and 1 week
Pani-rosa [81]

Answer:

1/3

i don't know laughing out loud

7 0
3 years ago
Which graph represents the solution to this inequality? -1/4(12x+8)≤ -2x+11
Bond [772]

Answer:

c

Step-by-step explanation:

-3x-2\leq-2x+11

+3x       +3x

-2\leqx+11

-11     -11

-13\leqx

8 0
3 years ago
1. The curve y = (x - 1)(x – 5) cuts the x-axis at A and B and the y-axis at C.
saveliy_v [14]
So the first two questions are asking for points of intercept. a is asking where the function crosses the x, in this case it is where y=0. So your x intercept is at x= 1,5. Then to find the y intercept it is where x=0, so just substitute 0 for x. Then you get your y intercept as y=5. Because your coefficient for the quadratic function is positive your function has a minimum since it opens upward. I’m not sure what is means by C coordinate, but your vertex is at (3,-4) and lime of symmetry is at x=3.

X intercepts: (1,0) and (5,0)
Y intercept: (0,5)

3 0
3 years ago
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