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3 years ago

22. Marlenny travels 42 blocks to school, which is three times as far as Alya does. If Alya moves

Mathematics

1 answer:

Alinara [238K]3 years ago

5 0

How many blocks away from school does she live now is 9 blocks away from school.

First step is to calculate the number of blocks between the house she was living before and the school

Blocks=42 blocks/3

Blocks=14 blocks

Second step is to calculate how many blocks away from school does she live now

Number of blocks=14 blocks- 5 blocks

Number of blocks=9 blocks

Inconclusion How many blocks away from school does she live now is 9 blocks away from school

Learn more here:

brainly.com/question/11747609

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FinnZ [79.3K]

Answer:

I don't really get it, could you attach a picture ? please

Step-by-step explanation:

3 0

3 years ago

Find the equation for the<br> following parabola<br> Vertex (-2,-4)<br> Focus (-4,-4)

iren [92.7K]

Answer:

None of the given option corresponds to the answer.

Step-by-step explanation:

The parabola has its axis of symmetry parallel to the x-axis and is represented by the following expression:

$x - h = 4\cdot p \cdot (y-k)^{2}$

Where:

$h$ , $k$ - Components of the vertex location, dimensionless.

$p$ - Absolute distance of focus with respect to vertex, dimensionless.

The absolute distance is determined by following formula:

$p = x_{F}-h$

Where $x_{F}$ is the horizontal component of focus with respect to origin.

If $h = -2$ , $k = -4$ and $x_{F} = -4$ , the absolute distance and the equation that represents the parabola is:

$p = -4+2$

$p = -2$

$x +2 = -8\cdot (y+4)^{2}$

None of the given option corresponds to the answer.

8 0

3 years ago

3. Michelle wants to save at least $3,500. She has already put away

algol [13]

The equation that represents the scenario is 3500 < 360w + 600.

<h3>What is the equation that represents the scenerio?</h3>

Here are inequality signs and what they mean:

> means greater than
< means less than
≥ means greater than or equal to
≤ less than or equal to

Total amount Michelle wishes to save < total amount already saved + (number of weeks x amount made weekly)

$3500 < $600 + ($360w)

To learn more about inequality, please check: brainly.com/question/5031619

#SPJ1

8 0

2 years ago

Exposure to microbial products, especially endotoxin, may have an impact on vulnerability to allergic diseases. The following ar

Softa [21]

Answer:

A. E ( U ) = 21.5454 , E ( F ) = 8.39333

B. M ( U ) = 17.0 , M ( F ) = 18.0

C. E ( U' ) = 17.0 , E ( F' ) = 7.95384

D. T ( U ) = 9.091% , T ( F ) = 6.667%

Step-by-step explanation:

Solution:-

- Two sample sets ( U ) and ( F ) that define the concentration ( EU/mg ) of endotoxin found in urban and farm homes as follows:

U: 6.0 5.0 11.0 33.0 4.0 5.0 80.0 18.0 35.0 17.0 23.0

F: 2.0 15.0 12.0 8.0 8.0 7.0 6.0 19.0 3.0 9.8 22.0 9.6 2.0 2.0 0.5

- To determine the mean of a sample E ( U ) or E ( F ) the following formula from descriptive statistics is used:

$E ( X ) = Sum ( X_i ) / n$

Where,

Xi : Data iteration

n: Sample size

Therefore,

$E ( U ) = \frac{Sum (U_i )}{n_u} \\\\E ( U ) = \frac{6.0 + 5.0 + 11.0 + 33.0 + 4.0+ 5.0 +80.0+ 18.0+ 35.0+ 17.0+ 23.0 }{11} \\\\E ( U ) = 21.54545\\\\E ( F ) = \frac{Sum (F_i )}{n_f} \\\\E ( F ) = \frac{2.0 + 15.0 + 12.0 + 8.0 + 8.0 + 7.0 + 6.0 + 19.0+ 3.0+ 9.8+ 22.0+ 9.6+ 2.0+ 2.0+ 0.5 }{15} \\\\E ( F ) = 8.39333$

- To determine the sample median we need to arrange the data for both samples ( U ) and ( F ) in ascending order as follows:

U: 4.0 5.0 5.0 6.0 11.0 17.0 18.0 23.0 33.0 35.0 80.0

F: 0.5 2.0 2.0 2.0 3.0 6.0 7.0 8.0 8.0 9.6 9.8 12.0 15.0 19.0 22.0

- Now find the mid value for both sets:

Median term ( U ) = ( n + 1 ) / 2

= ( 11 + 1 ) / 2 = 12/2 = 6th term

Median ( U ), 6th term = 17.0

Median term ( F ) = ( n + 1 ) / 2

= ( 15 + 1 ) / 2 = 16/2 = 8th term

Median ( F ), 8th term = 8.0

- We will now trim the smallest and largest observation from each set.

- In set ( U ) we see that smallest data corresponds to ( 4.0 ) while the largest data corresponds to ( 80.0 ). We will exclude these two terms and the trimmed set is defined as:

U': 5.0 5.0 6.0 11.0 17.0 18.0 23.0 33.0 35.0

- In set ( F ) we see that the smallest data corresponds to ( 0.5 ) while the largest data corresponds to ( 22.0 ). We will exclude these two terms and the trimmed set is defined as:

F': 2.0 15.0 12.0 8.0 8.0 7.0 6.0 19.0 3.0 9.8 9.6 2.0 2.0

- We will again use the previous formula to calculate means of trimmed samples ( U' ) and ( F' ) as follows:

$E ( U' ) = \frac{5.0+ 5.0+ 6.0+ 11.0+ 17.0+ 18.0+ 23.0+ 33.0+ 35.0}{9} \\\\E ( U' ) = 17$

$E ( F' ) = \frac{2.0 +2.0+ 2.0 +3.0+ 6.0+ 7.0+ 8.0+ 8.0+ 9.6+ 9.8+ 12.0+ 15.0+ 19.0}{13} \\\\E ( F' ) = 7.95384$

- The trimming percentage is known as the amount of data removed from the original sample from top and bottom of sample size of 11 and 15, respectively.

- We removed the smallest and largest value from each set. Hence, a single value was removed from both top and bottom of each data set. We can express the trimming percentage for each set as follows:

$T ( U ) = \frac{1}{11} * 100 = 9.091\\\\T ( F ) = \frac{1}{15} * 100 = 6.667$ %

- The trimming pecentages for each data set are 9.091% and 6.667% respectively.

7 0

3 years ago

5d-3+2d=4d+9. I need help can you help me solve this problem

galben [10]

Answer:

D=4

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers