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Sliva [168]
3 years ago
13

PLEASE HELP!!!!!!! WILL GIVE BRANLIEST ANSWER IF CORRECT

Mathematics
1 answer:
Maksim231197 [3]3 years ago
8 0
The answer is the first one, because when you expand it you get -1/4 × 1, which equals -1/4, and -1/4 × -2y, which equals 1/2y. These are the same terms in the given expression -(1/2 + 1/4). I hope this helps!
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Two intersecting lines have of point(s) in common.
Dmitry [639]

Answer:A line segment

Step-by-step explanation:

6 0
4 years ago
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Which of the following represents a negative correlation?
babunello [35]

Answer:

The answer is letter B, The water level in a bathtub as it drains over time.

Step-by-step explanation:

It is best to learn the meaning of <u>"negative correlation"</u> first.

Correlation- In Mathematics, "correlation" means a measure of the relationship between two variables.

<em>Positive Correlation-  </em>when the values of the variables increase together.

<em>Negative Correlation- </em>when one value of a variable increases while the other variable's value decreases.

*The situation above is asking for a negative correlation, therefore the answer is letter B (The water level in a bathtub as it drains over time).

The variables are: <u>water level and draining time</u>

As the draining time increases, the water level in the bathtub decreases. This is clearly an example of a negative correlation.

3 0
3 years ago
Thirty adults were asked how many pets they have had over their lifetime. the results are shown in the histogram below. a bar gr
Savatey [412]

Using the concepts of the mean and of the median, it is found that the correct option is given by:

both in the interval 6–10.

<h3>What are the mean and the median of the data-set?</h3>

  • The mean is the <u>sum of all observations divided by the number of observations</u>.
  • The median is the measure that separates the bottom half of the variable from the upper half, that is, the 50th percentile.

To calculate the mean from the histogram, we take the midpoint of each interval and calculate the weighed mean, hence:

M = \frac{14(3) + 9(8) + 5(13) + 2(18)}{30} = 7.17

The median is in the interval in which the 30/2 = 15th measure is, which is also in the interval 6-10, as the interval 1-5 had 14 adults, and after interval 6-10, there are 23 adults.

Hence, the correct option is given by:

both in the interval 6–10.

More can be learned about the mean and the median of a data-set at brainly.com/question/24732674

4 0
2 years ago
Find the volume of the portion of the solid sphere rholess than or equals5 that lies between the cones variant phiequalsStartFra
BlackZzzverrR [31]

Answer:

Volume = (250π√3)/3 unit³

Step-by-step explanation:

The shape is a solid sphere

Where rho = ρ

ρ ≤ 5

Where Phi = φ

φ = π/6 (lower limit)

φ = 5π/6 (upper limit)

Note 1π rad = 180°

We would apply triple integrals and spherical coordinates to solve for the volume of a solid sphere.

See attachment for details

From calculations,

The volume of the portion of solid sphere = Volume = (250π√3)/3 unit³

5 0
3 years ago
What is the slope of the line
Eduardwww [97]

Answer:

0

Step-by-step explanation:

Slope = rise/run = 0/9 = 0

3 0
3 years ago
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