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3 years ago

HURRY BRAINLIEST AND 40 POINTS!!!

Mathematics

2 answers:

olganol [36]3 years ago

3 0

ANSWER:
Instead of greater than, the inequity symbol should be greater than or or equal to.

Step-by-step explanation:
We know the variable x represents the number of students. We also know there are 5 chaperones attending; this makes x+5 , by 2.50
It costs $2.50 per person; this means we multiply the number of people, x+5, by 2.50:

2.50(x+5)

The class has $90 to spend; this means they can spend up to and including $90. This gives us
90>2.50(x+5)
_

qaws [65]3 years ago

3 0

Answer:

Statement 3

Step-by-step explanation:

2.50(x + 5) 《 90

90 》 2.50(x + 5)

Should be 》instead of > because cost can be $90 too

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On a treasure map, a X is placed at point (9, -7). if the pirates are currently on point (9,3), how many units away are they?

Alex_Xolod [135]

Answer:

They are 10 units away from the treasure

Step-by-step explanation:

Notice that the points (9, -7) and (9, 3) are both located at the same x-value (9) while their y-values are in one case 3 units above the x-axis, and in the other 7 units BELOW the x-axis. Therefore thy differ by 3 - (-7) units , which totals 10 units.

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2 years ago

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Last week’s and this week’s low temperatures are shown in the table below.

zavuch27 [327]

Answer:

1st, 2nd, 3rd and 5th statement are correct choices.

Step-by-step explanation:

We have been given a table of low temperatures during last week and this week. We are asked to choose the correct options from our given choices about the center and variability of data.

Low Temperatures of this Week (f): 4, 10, 6, 9 ,6.

Low Temperatures of the last Week (f): 13, 9, 5, 8, 5.

Let us check our given choices one by one.

1. The mean of this week's temperatures is greater than 5 degrees.

$\text{Mean of the low temperatures this week}=\frac{4+10+6+9+6}{5}$

$\text{Mean of the low temperatures this week}=\frac{35}{5}$

$\text{Mean of the low temperatures this week}=7$

Since the mean of this week's temperatures is 7 and 7 is greater than 5, therefore, 1st statement is true.

2. The mean of last week's temperatures is greater than 5 degrees.

$\text{Mean of the low temperatures last week}=\frac{13+9+5+8+5}{5}$

$\text{Mean of the low temperatures last week}=\frac{40}{5}$

$\text{Mean of the low temperatures last week}=8$

Since the mean of last week’s temperatures is 8 and 8 is greater than 5, therefore, 2nd statement is true as well.

3. The range of this week's temperatures is greater than 5 degrees.

We know that range is the difference between greatest value and smallest value of data set.

$\text{Range}=\text{ Greatest value of data set-Lowest value of data set}$

$\text{Range of the low temperature this week}=10-4$

$\text{Range of the low temperature this week}=6$

We can see that range of low temperature this week is 6 and 6 is greater than 5, therefore, 3rd statement is true.

4. The mode of last week's temperatures is greater than 5 degrees.

Mode is the most frequently occurring number found in a set of numbers. We can see that 5 is the mode of last week's temperature and it is not greater than 5, therefore, 4th statement is not true.

5. The range of last week's temperatures is greater than 5 degrees.

$\text{Range of the low temperature last week}=13-5$

$\text{Range of the low temperature last week}=8$

We can see that range of last week's temperatures is 8 and 8 is greater than 5, therefore, 5th statement is a correct choice.

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3 years ago

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Ilia_Sergeevich [38]

Use the formula (y,-x)
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2 years ago