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3 years ago

Which is the graph of x-y=1

Mathematics

2 answers:

labwork [276]3 years ago

8 0

Answer:

here you go! :)

hope it helps!

Step-by-step explanation:

VARVARA [1.3K]3 years ago

8 0

There hope it helps

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A survey of pet owners found that on average, they spend $1,225 annually per pet, with a standard deviation of $275. Between whi

earnstyle [38]

Answer:

B.$675 and $1,775

Step-by-step explanation:

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3 years ago

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If a data value in a normal distribution has a negative z-score, which of the following must be true?

mel-nik [20]

Correct Answer:
The data value must be less than the mean.

The formula for the z value is:

z-value = (Data value - Mean) / Standard Deviation

The z-value will be negative when the Numerator of the above expression will be negative. The numerator will be negative only when the Data Value is less than the mean value. For example, for a data value of 5 and mean value 8, the numerator will be -3, and when it will be divided by standard deviation, the resulting z value will be negative.

So, Third option is the correct answer.

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3 years ago

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Which expression is equivalent to square root 55x^7 y^6/11x^11 y^8? Assume x > 0 and y > 0.

morpeh [17]

The first step for solving this expression is to reduce the fraction with 11.
$\sqrt{ \frac{5 x^{7} y^{6} }{ x^{11} y^{8} } }$
Now reduce the fraction with $x^{7}$ .
$\sqrt{ \frac{5 y^{6} }{ x^{4} y^{8} } }$
Reduce the fraction one more time with $y^{6}$ .
$\sqrt{ \frac{5}{ x^{4} y^{2} } }$
To take the root of a fraction,, we must take the root of the numerator and denominator separately. This rule will change the expression to the following:
$\frac{ \sqrt{5} }{ x^{2} y}$
Since we cannot simplify this fraction any further,, the final answer is going to be $\frac{ \sqrt{5} }{ x^{2} y}$ .
Let me know if you have any further questions.
:)

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3 years ago

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The slope between the points (-1,-5) and (r, -9) is 2. What is the value of r?

Gnom [1K]

Answer:

r = 2

Step-by-step explanation:

slope = (y2 - y1)/(x2 - x1)

(-1, -5)

(r, -9)

-5 - (-9) / -1 - r = 2

4 / -1 - r = 2

r = -2

-1 - (-3) = 2

4 / 2 = 2

Please let me know if I've gotten anything wrong!

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2 years ago

What is the mode of this data set? {8, 11, 20, 10, 2, 17, 15, 5, 16, 15, 25, 6}

lidiya [134]

The mode is what appears the most so 15 is the answer because it appears the most.

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2 years ago

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