Mathematics Middle School

help me and i will mark you the brainlyist

Answers

Answer 1

1a. n ≤ 21
1b. n ≥ 5
1c. n > 3/5

2d. n < 14
2e. n ≥ 14

Answer 2

The answer is what the guy above said

Related Questions

include a step by step explanation pls ty

Answers

the division problem is 7 divided by 15. this can be written as 7/15. to do this, you first know that 15 doesn't go into 7, so you add a decimal point, and make the 7 70. 15 goes into 70 4 times. 15 times 4 is 60. 70-60 is 10. 15 doesn't go into 10, so you add another 0 and bring it down. 15 goes into 100 6 times. 15 times 6 is 90. 100-90 is 10. 15 doesn't go into 10, so you bring down another 0. 15 goes into 100 6 times. 15 times 6 is 90. 100-90 is 10. at this point, you can probably guess that the 6 will go on for a while. this means it is repeating. this means your answer is "a".

Kimi brought chocolate and vanilla cupcakes to school for her birthday. 2 students picked a vanilla cupcake and 18 students picked a chocolate cupcake. What percentage of the students picked a vanilla cupcake?

Answers

10% is your answer. Take the total number of students and use that as a divisor of 100 so 100/20 = 5% so each kid represents 5 percent. Then if you take the 2 kids who got vanilla cup cakes and if each one is 5% then 5%+5%= 10%

Answer: 10% of students picked a vanilla cupcake.

Explanation: 18 + 2 = 20. 20 is 100% of 20. 20/10 = 2, and 2 is 10% of 20, therefore 10% of students picked a vanilla cupcake.

i really don't understand this yall

Answers

0.088

Step-by-step explanation:

watch some tutorials on how to divide decimal numbers on yt.

HELP ASAP PLSPLSPLSPLSPLSPLSPLSPLSPLSPLS

Aeris reads the temperature of a liquid in a lab experiment. The temperature of the liquid is 7.2ºF. After 5 hours, she reads the temperature of the liquid again. The temperature of the liquid is now −1.6°F. Aeris plots the points on a number line to determine the temperature change between these two readings. How much did the temperature decrease? Enter your answer as a decimal in the box.

Answers

Answer: 8.8 (-8.8'F)

Step-by-step explanation:

What we know:

Temperature started as 7.2Temperature ended as -1.6We need to find the difference

How to solve:

By doing simple subtraction, we can solve this.

Process:

Write equation 7.2 - (-1.6) = ?Simplify 7.2 + 1.6 = ?Solve = 8.8

Solution: 8.8 (-8.8'F)

*Note: The temperature decreased by 8.8'F, but it increased/changed by -8.8'F. Be careful of wording.

Please help :) Thanks!

Answers

Answer:

Hi there!!

Since this is a positive slope, so we can use 3/1=3

The slope is 3

The slope is positive so you can use 3/1 witch means the slope of the graph is 3.

Which point on the number line represents Negative three-fourths?

A number line going from negative 2 to positive 1 in increments of 1. There are 4 equal spaces between each number. Point A is 1 mark to the right of negative 2. Point B is 1 mark to the right of negative 1. Point C is 1 mark to the left of 0. Point D is 1 mark to the left of 1.
A
B
C
D

Answers

Answer:

Step-by-step explanation

i am biggest brain

Dr. McGee saw 1,007 patients this year, which is 90% higher than the number he saw
last year. How many patients did Dr. McGee see last year?

Please help! Will put Brainiest!

Answers

Answer:

107 patients

Step-by-step explanation:

This year Dr. McGee had 1007 patients act like this is 100%. 10% of 1007 is 107 and since there was a 90% increase 107 is the answer

Write an equation representing the relationship of 10:20 shown in the graph

Answers

Answer:

[tex]20=2(10)[/tex]

Step-by-step explanation:

10:20 is a good point that passes a line to another.

This graph is a linear graph.

The linear equation is

[tex]y=mx+b[/tex]

[tex]y[/tex] = 20 (the y coordinate in the graph)

[tex]m[/tex] = slope

[tex]x[/tex] = 10 (the x coordinate in the graph)

[tex]b[/tex] = y-intercept

Finding slope

To find the equation, we'll need to plug in the values in the formula. To find slope using two points, use the formula, then plug in the values:

[tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

(10, 20) and (20, 40)

[tex]=\frac{40-20}{20-10}[/tex]

[tex]= \frac{20}{10}[/tex]

[tex]\bold{m= 2}[/tex]

Finding the y-intercept

You have to find the slope first before finding the y-intercept. So, plugin one of the two points we used to find the slope into the formula and solve for [tex]b[/tex]

(10, 20)

[tex]20=2(10)+b[/tex]

[tex]20=20+b[/tex]

[tex]20-20=20-20+b[/tex]

[tex]\bold{b=0}[/tex]

The y-intercept is zero, and when it is, you do not add it since zero is nothing.

The equation is [tex]20=2(10)[/tex]

Tony usually saves 1/5 of his allowance. Last week, he only saved 2/3 as much. How much of his allowance did he save last week?

Answers

Answer:

2/15

Step-by-step explanation:

All we have to do is multiply 1/5 by 2/3

1 x 2 = 2

5 x 3 = 15

Therefore, Tony saved 2/15 of his allowance last week.

Answer:

2/15

Step-by-step explanation:

you have to multiply 1/5 by 2/3

1 x 2 = 2

5 x 3 = 15

Therefore, Tony saved 2/15 of his allowance last week.

(PLEASE HELPP) The number of 6th graders in RSM summer camp to that of 7th graders was 4 to 11, while the number of 5th graders to that of the 6th graders was 13 to 9. By what percent did the number of 7th graders exceed that of the number of 5th and 6th graders taken together ?

Answers

Answer:

The number of 7th graders exceed that of the number of 5th and 6th graders taken together by 5.88%.

Step-by-step explanation:

I am going to say that:

x is the proportion of 5th graders.

y is the proportion of 6th graders.

z is the proportion of 7th graders.

The number of 6th graders in RSM summer camp to that of 7th graders was 4 to 11

This means that:

\frac{y}{z} = \frac{4}{11}

11y = 4z11y=4z

y = \frac{4z}{11}y=

The number of 5th graders to that of the 6th graders was 13 to 9.

This means that:

\frac{x}{y} = \frac{13}{9}

9x = 13y9x=13y

x = \frac{13y}{9}x=

13y

All of them is 100%

This means that:

x + y + z = 1x+y+z=1

We need to find z.

y = \frac{4z}{11}y=

x = \frac{13y}{9} = \frac{13*4z}{9*11} = \frac{52z}{99}x=

13y

9∗11

13∗4z

52z

Then

x + y + z = 1x+y+z=1

\frac{52z}{99} + \frac{4z}{11} + z = 1

52z

+z=1

The lcm(least common multiple) between 11 and 99 is 99. Then

\frac{52z + 9*4z + 99z}{99} = 1

52z+9∗4z+99z

187z = 99187z=99

z = \frac{99}{187}z=

187

z = 0.5294z=0.5294

By what percent did the number of 7th graders exceed that of the number of 5th and 6th graders taken together ?

z(7th graders) is 52.94%.

x + y(5th and 6th graders) is 100 - 52.94 = 47.06%

52.94 - 47.06 = 5.88

The number of 7th graders exceed that of the number of 5th and 6th graders taken together by 5.88%.

1. 0.12 x 105=
2. 45.3 x 4=
3. 99.2 x 82=
4. 37 x 0.93=
5. 1.67x 4=
6. 3.2 x 184=
7. 12 x 0.37=
8. 0.904 x 75=

Answers

1)12.6
2) 181.2
3) 8134.4
4) 34.14
5) 6.68
6) 588.8
7) 4.44
8) 67.8

Could of used calculator

A washing machine is filling up with water at a constant rate. The rate is Three-fourths of a gallon in 1 over 5 of a minute. Don calculated the unit rate to be 3 over 20 of a gallon per minute. What did he do wrong?

Answers

Answer:

First, you have to see how many gallons fill in a minute, obviously, so take 3/4 and divide it by 1/5, which gives 15/4. so you can see, don multiplied the two numbers instead of dividing, which is what he did wrong.Step-by-step explanation:

Answer from NukeExplosions1

Answer:

What he did wrong is that he multiplied the denominator wrong. it is supposed to be a 15. Don should re-calculate it to 3 over 15 of a gallon per minute.

hope this helped.

let me know if I am wrong.

have a great day.

720x + 10 = 2170
What is x?

Answers

Answer:

x = 3

Step-by-step explanation:

720x + 10 = 2170

=> 720x = 2160

=> x = 3

Hoped this helped.

Answer:

x = 3

Step-by-step explanation:

First subtract 10 from 2,170 to get 2,160.

Next isolate the x variable by dividing 720 on both sides to get x = 3.

Hope this helps you :)

A 4-column table with 2 rows. Column 1 has entries Spent, Earned. Column 2 is labeled Day 2 with entries 7, 16. Column 3 is labeled Day 3 with entries 12, 22. Column 4 is labeled Day 4 with entries 9, 18.
Juan ran the lemonade stand for 3 more days after his first day profit of $12. Each day, he used the money from sales to purchase more lemons, cups, and sugar to make more lemonade. The table shows how much he spent and earned each day.

What is the expression needed to find his total earnings?

What were his total earnings?

Answers

Answer:

Step-by-step explanation:

Hope this helps.

A: 0.6

B: 0.4

C: 0.2

D: 0.8

Plz mark brainliest :D

Answer:

The answer is C/16 + (–7) + 22 + (–12)

Select the expressions that are equivalent to 5(6a).

Answers

Answer:

Not B

Not C

Not D

Step-by-step explanation:

Answer:first one

Step-by-step explanation:

A. Are the expressions 3(m−2) + 2(m−2) and 5(m−2) equivalent expressions?

B. In two or more complete sentences, justify your answer to A.

Answers

The answer is yes. If you solve both expressions it would be 5m-10.

Answer: yes, this is because when you solve the first equation then your answer will be 5(m-2). You do this by distributing 3 to m & 2 (multiply), then you will distribute 2 to m & 2 (also multiply).

Step-by-step explanation:

Monica is a car salesperson. She makes a 2.5% commission on each car she sells. Last month, Monica sold three cars. The sale price of each car is shown in the table.

How much did Monica earn last month?

Enter your answer in the box.

$

Answers

What the guy above me said

Jake plotted an equivalent ratio on the coordinate grid below:

Which of these explains why the point Jake plotted is incorrect?
If the number of cups of raisins is 30, then the number of cups of cereal will be 10.
If the number of cups of cereal is 30, then the number of cups of raisins will be 60.
If the number of cups of cereal is 30, then the number of cups of raisins will be 10.
If the number of cups of raisins is 30, then the number of cups of cereal will be 60.

Answers

Answer:

(A) If the number of cups of cereal is 40, then the number of cups of raisins will be 10.

Step-by-step explanation:

i believe it is A please tell me of this is incorrect

A plant is 5cm tall and growing at a rate of 3cm a month. What equation is right?

1. y=5x+3
2. y=5-3x
3. y=3x+5

Answers

It would be y=3x+5. This is because if it is going at a rate of 3cm a month, this makes it the constant value or the slope. But since it’s starting value is 5cm, that would make it the y-intercept, which is why your answer would be y=3x+5.

Answer:

y=3x+5

Step-by-step explanation:

The plant starts at 5cm so +5 is the starting height, It grows at 3cm a month making 3x the growth rate. so 3x+5 is the height of the plant every month.

What is the range of possible sizes for side x?

Answers

Answer:

the range of possible values for x are 1.6<x<9.6

Step-by-step explanation:

Answer:

Step-by-step explanation:

x is smaller than four so the range could be 0.1 through 3.9 so the answer is 38 sizes

How much greater is 4/9 than 2/9. Please answer.
No links or unreasonable random answers. Thank you.

Answers

Step-by-step explanation:

A better way to word this is how much more is 4/9 than 2/9 which is 2/9 more because 2/9 plus 2/9 is 4/9 and the denominator stays the same

The number 3 is the common factor of A. 9 and 15 B. 6 and 10 C. 8 and 12

Answers

Answer:

It is a common factor of 9 and 15, so A

Answer: I would say A

Step-by-step explanation: 3x3 is 9 5x3 = 15

PLS HELP URGENT WILL GIVE 25 POINTS AND Brainliest

Answers

Answer:

Step-by-step explanation:

can u pls brainlyest me

Answered up there .. d c b ^^

the table shows the number of passengers who flew on airplane flights in or out of one airport. each flight had the same number of passengers. how many passengers were on each night. TOTAL PASSENGERS; 27,000 - NUMBER OF FLIGHTS; 90 - CREW MEMBERS; 900

Answers

310 would be the answer

Answer:

I think it would be 300 sorry if im wrong

Step-by-step explanation:

(-6,-3) and (-1,x)=13 find the value of A

Answers

Distance between two point can be calculated by the equation:

D=sqrt((x2-x1)^2+(y2-y1)^2)
Then,
13=sqrt((-1-(-6))^2+(x-(-3))^2)
We can square both sides to get rid of the square root,
169=(-5)^2+(x-(-3))^2
169-25=(x-(-3))^2
144 =(x-(-3))^2
By taking the square root in both sides, then
12=x+3
In this case,
X=12-3=9

(-6-3) = -9, (-1,x)=13 : x=-13

Which is a solution for x in the equation:
x²=60

A. ²√60

B. ∛60

C. 15

D. 10

Answers

Answer:

wwww

Step-by-step explanation:

Answer:

Step-by-step explanation:

to find what x² is you have to square root the answer

Identify the slope and y-intercept of the graph y = -1/3x + 6.

2. slope = 6, y-intercept = -1/3

1. slope = -1/3, y-intercept = 6

Answers

Answer:

A.slope = 6, y-intercept = -1/3

Step-by-step explanation:

slope= -1/3 , y-int= 6
y= mx +b
m=slope b=y-intercept

A number line going from 0 to 1. There are 6 equal spaces between 0 and 1. The line contains 0, A, B, blank, C, D, 1.
What fraction is represented by Point A?

Point A is at
.

Which point represents 5
6
?

Point
represents 5
6
.

Answers

Answer:

The number line is divided by 6ths.

Step-by-step explanation:

There are 6 equally sized spaces between 0 and 1 on a number line. By definition of a fraction, a quantity is divided upon a number of equal parts in which can be expressed as the number of parts divided by the total number of parts. Therefore, the numerator in this case will be how many of the 6 parts are there at a certain point; the denominator will be 6, since there are 6 total, equal parts. In this case, think of the fraction as a distance traveled from 0 to 1 in 6 parts; the numerator is how far is traveled, and the denominator is the total travel distance. Point A is located at 1/6, since it is 1 out of the 6 pieces traveled. Point D would be at 5/6 because it has traveled 5 out of the 6 distances.

Point A is at

✔ 1/6

Point

✔ D

represents 5

Y = 4x + 9
What is the slope and the y-intercept?

Answers

Answer:

y=4x+9 is in the form y=mx+b , so the slope ( m ) is 4 and the Y-intercept ( b ) is 9

Answer:

m = 4b = 9

Step-by-step explanation:

We know that:

y = mx + by = 4x + 9

If we compare these two equations, we can find the slope and the y-intercept.

=> (y = mx + b) = (y = 4x + 9)

We can clearly see that 'm = 4' and 'b = 9'.

Conclusion:

Therefore:

m = 4b = 9

Hoped this helped.

Gavin is moving into a new apartment that has a kitchen with an area of 50 square feet
What is the area of the bedroom?

Answers

Answer:

Step-by-step explanation:

i think I'm not sure. hope this helps.

Answer: WE CAN'T SEE THE PICTURES TO ANSWER YOUR QUESTION!

Step-by-step explanation:

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