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3 years ago

In a class, 42 students, there are 8 more boys than girls write and solve a system of 3 equations

Mathematics

1 answer:

zhenek [66]3 years ago

8 0

Answer:

x = 17

Step-by-step explanation:

x + x + 8 = 42 because x = boys and x + 8 = girls

2x = 34 because 2x = 42 - 8

x = 17

i hope this helps! you don't need the 2x = 42 - 8 to be an equation ;)

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Emmanuel added two integers Which condition will always give Emmanuel a negative solution when he adds two integers? Both intege

alexgriva [62]

Both integers have negative values

Explanation

Let

x and y represents the number

so, the options are

$\begin{gathered} +\text{ + +} \\ +\text{ + -} \\ -\text{ + +} \\ -\text{ +-} \end{gathered}$

a) Both integers have negative values Both integers

$-x-y=-(x+y)\rightarrow you\text{ will always get a negative number}$

b) Both integers have positive values

$x+y=+\text{ + += you will always get a positive number}$

c)One integer has a positive value, and one integer has a negative value

$\begin{gathered} -x+y\text{ or x-y} \\ the\text{ sign of the result depends on the greates absolute value, it means the answer will have the same of the bigger number( absolute value)} \end{gathered}$

d)The values of the two integers are opposites

as the point C , the sign depends on the bigger number

for example

$\begin{gathered} 8-5=3\text{ positive because 8 is the bigger} \\ 5-8=-3\text{ negative because (-8) is has the bigger absolute value} \end{gathered}$

so, the answer is Both integers have negative values

I hope this helps you

3 0

2 years ago

Round 12,309,453 to the nearest million

Oliga [24]

Answer:

12,000,000

Step-by-step explanation:

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3 years ago

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shagufta has a part-time job she is paid £5.60. last week shagufta worked for 24 hours. work out shagufta's total pay for last w

Juli2301 [7.4K]

She would get paid £134.40

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3 years ago

How many times greater is 8 ×10^14 than 2×10^9

Sergeu [11.5K]

Answer:

8 x 10^14 is 800000000000000, and 2 x 10^9 is 2000000000 so 8 x 10^4 is 400000 greater, Good Luck!

Step-by-step explanation:

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3 years ago

HELP PLS!!! IMPORTANT!

Cerrena [4.2K]

Answer:

#3: The number of pets that is the mode for the class is 1 because the people who have 1 pet appears the most.

explanation: the largest amount of people are the people who have 1 pet.

#4: The percent of students who have at least 3 pets is 25%.

explanation: 6 divided by 24 is 0.25 and and that converted to a percentage is 25%

#5: The median number of pets that students have is 1 pet.

explanation: the middle number of all the people in Yolanda's class is 1.

#6: The range of the number of pets is 9.

explanation: range is the largest number minus the smallest number

9 - 0 = 9

#7: #7 will be attached with this answer.

#8: There are 22 students in the class.

explanation: the added up number of students is 22.

#9: The mode value is 3 students.

explanation: the mode is the number that appears the most. 3 is the number that appears the most.

#10: The median number of concerts that students have attended is 2 concerts.

explanation: the middle number of all the numbers is 2.

#11: The concerts that the students in Mr. Ritter's class have attended in all is 72.

explanation: all the number of concerts attended added up is 72.

#12: The average (mean) number of concerts the students in Mr. Ritter's class has attended is 3 concerts.

explanation: all the concerts divided by the number of students were are is the mean.

72 / 22 is 3.27.

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3 years ago