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Fiesta28 [93]
3 years ago
6

Question is attached.

Mathematics
1 answer:
lions [1.4K]3 years ago
8 0
1. a
2. c
3. b
hope this helps
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Are the graphs of the lines in the pair parallel? Explain. y = 6x + 9 27x – 3y = –81
olga nikolaevna [1]
For the 2nd equation, you need solve for y to get it by itself so once thats done you get y=9x+27 but since the x values (also the slope) aren't equal, they can't be parallel
7 0
3 years ago
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15+0= 15
Ksju [112]

First of all, let's take a look on the question.

\large{15 + 0 = 15}

Here, 0 is added to 15 and the resultant is 15 only. So, we can say that 0 when added with any number gives the same number as the resultant.

So, the property is known as <u>Identi</u><u>ty</u> property because 0 is added to get the identity of the same number.

<u>The Correct Option:</u>

\large{ \boxed{ \red{ \bf{Option \: C}}}}

So, let's know more...

  • Commutative property ➝ a + b = b + a
  • Associative property ➝ a + (b + c) = (a + b) + c
  • Distributive property ➝ a(b + c) = ab + ac

So this is the general form of these properties which is general observed in the rational numbers.

<u>━━━━━━━━━━━━━━━━━━━━</u>

5 0
3 years ago
Cara evaluated the expression below.
Stolb23 [73]

Answer:

Cara multiplied only 4 and 7 together and did not multiply 4 and 13.

Step-by-step explanation:

She didn't distribute the 4 to both numbers inside the parenthesis. If she had done so, she would have gotten 28 - 42, <em>not</em> 28 - 13.

6 0
3 years ago
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A quadratic equation is shown below: 9x2 − 16x + 60 = 0
Oksanka [162]
9x^2 - 16x + 60
Find the discriminant, b^2 - 4ac, which is the same as the value of the radicand.
(-16)^2 - 4 * 9 * 60 = -1904
Since the discriminant is negative, there will be NO real solutions, and 2 complex solutions.

Part B.
4x^2 + 8x - 5 = 0
You can tell if a quadratic is factorable if you find the discriminant and it is a perfect square. The discriminant for this quadratic is 144 so it is factorable.
(2x + 5)(2x - 1) = 0
Set each factor equal to zero.
2x + 5 = 0                                                    2x - 1 = 0
subt 5 from both sides                                add 1 to both sides
2x = -5                                                        2x = 1
divide both sides by 2                                divide both sides by 2
x = -5/2 <span>                                                     </span>  x = 1/2
7 0
3 years ago
What is the interquartile range of the data set?
Fantom [35]
The interquartile range<span> (</span>IQR<span>) is a measure of variability, based on dividing a </span>data set<span>into quartiles. Quartiles divide a rank-ordered </span>data set<span> into four equal parts. The values that divide each part are called the first, second, and third quartiles; and they are denoted by Q1, Q2, and Q3, respectively.</span>
5 0
3 years ago
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