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11111nata11111 [884]
3 years ago
9

Which statement best describes the effect of the confounding variable?

Mathematics
2 answers:
Mama L [17]3 years ago
7 0

Answer:

(D) Because vehicles of different sizes may respond differently to the additive, it may be difficult to conclude whether the additive improves gas mileage for all vehicles.

ED2021

DiKsa [7]3 years ago
6 0

Answer:

D

Step-by-step explanation:

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What is the value of X?
Citrus2011 [14]
(X+12) + 140 = 180

X + 12 + 140 = 180

X + 152 = 180

X = 180 - 152

X = 28
4 0
2 years ago
According to the rational root theron what are all the potential roots of f(x)=9x^4-2x^2-3x+4
Viefleur [7K]

Answer:

<u>Potential roots:</u>  \frac{9}{4},\frac{9}{2},9,\frac{3}{4},\frac{3}{2},3, \frac{1}{4},\frac{1}{2},1

Step-by-step explanation:

Simply put, the rational roots theorem tells us that if there are any rational roots of a polynomial function, they must be in the form

±  \frac{FactorsOfa_{0}}{FactorsOfa_n}

Where

a_n is the number before the highest power of the polynomial, and

a_0 is the constant in the polynomial

<em>From the polynomial shown, we have a_n = 9 and a_0 = 4</em>

<em />

<em>The factors of 9 are 9, 3, 1</em>

<em>and</em>

<em>The factors of 4 are 4,2,1</em>

<em />

So, if there are any rational roots, they would be:

±  \frac{FactorsOfa_{0}}{FactorsOfa_n}

±  \frac{9,3,1}{4,2,1}

Which is  ±   9/4, 9/2, 9/1, 3/4, 3/2, 3/1, 1/4, 1/2, 1/1

or

\frac{9}{4},\frac{9}{2},9,\frac{3}{4},\frac{3}{2},3, \frac{1}{4},\frac{1}{2},1

5 0
3 years ago
find the common difference of the arithmetic sequence. 6, 9.4, 12.8, 16.2, . . . a. –1.6 b. 15.4 c. 1.6 d. 3.4
gulaghasi [49]
<span>Common difference is just the number you pick minus the previous number,
You have </span><span>6, 9.4, 12.8, 16.2, . . .

d=9.4-6=3.4
d=12.8-9.4=3.4

The common difference is 3.4</span>
5 0
3 years ago
WHICH OF THE FOLLOWING IS THE COEFFICIENT IN THE ALGEBRAIC EXPRESSION 12X+Z&gt;4
Phantasy [73]

the answer is z mate because 12 and 4 are numbers

3 0
3 years ago
Read 2 more answers
What is the standard form of the equation of the circle in the graph?
Sphinxa [80]

Answer:

x^{2} +y^{2} =9

Step-by-step explanation:

5 0
3 years ago
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