Mathematics Middle School

I really need help with this it’s due at 3pm.

Answers

Answer 1

-3(x-4)+6=27

-3x+12+6=27

-3x+18=27

-3x=27-18

-3x=9

x=-3

Related Questions

I'm confused, is it A or D?

Answers

Answer:

D. x>7

Step-by-step explanation:

Multiply - and -3

x+3>10

Subtract 3 on both sides

x>7

(Remember you can only switch the symbol if you divide or multiply by negative it does not apply on addition or subtraction)

Hope this helps!

Answer:

It is D.

Step-by-step explanation:

Remove parentheses: x + 3 > 10

Subtract 3 from both sides: x > 10 - 3

Simplify 10 - 3 to 7: x > 7

A jar contains only pennies, nickels, dimes, and quarters. There are 29 pennies, 13 dimes, and 21 quarters. The rest of the coins are nickels. There are 91 coins in all. How many of the coins are not nickels? If n represents the number of nickels in the jar, what equation could you use to find n?

Answers

Answer:

First Question: 63 coins are not nickels.

Second Question: 63+n=91

Step-by-step explanation:

For your first question: 29+21=50 and 50+13=63. 63 coins are not nickels.

For your second question: You can do 29+21+13+n=91, I just simplified and said 63+n=91. You can choose.

Hope that this helps! Good luck with what you're working on!

Answer:

63 coins are not nickels.

Equation to find n:

91 - 63

91 - n

(Is this right I don't know, I'm trusting my hands right now)

taylosky pls answer this

Answers

Answer:

I hope whoever that is answers

Step-by-step explanation:

Answer: What

Step-by-step explanation:

Which equation is not a linear function?
A. y=x+2
B. y=x-2
C. y=x2
D. y=2x

Answers

D. Y=2x I think I’m not exactly sure

D y=2x I believe.....

1. The school office is now selling neon mechanical pencils. If the office pays $10.80 for a dozen pencils, how much should be charged to make a profit of 75 cents each?
2. Several cases of 16-ounce bottles of water were purchased for $252.00. If one case costs $7.00, how many cases were purchased?
3. Okolona College ordered jerseys to sell at the homecoming game. The college paid $9.25 each for 225 jerseys. Each jersey was sold for $15.75. What was the percent of markup for each jersey? How much profit was made if all of the jerseys were sold?
4. A truck traveled 654 miles on a long distance run. If the truck averaged 55 mph, how many hours did it take to reach the truck's destination? (Round to the nearest hour)
5. Della Riley borrowed $2400 for 6 months to invest in a business venture. If she agreed to pay 8% interest annually, how much will she be repaying?
6. It takes Dan an average of 45 minutes each evening to do his chemistry homework. Dan calculates that he worked a total of 3 hours on chemistry last week. Assuming that Dan worked his average time per evening consistently, how many evenings did Dan work?
7. Jon's car averages 20 mpg in town and 28 mpg on the road. What is the percent of decrease between the two driving conditions?

Answers

Answers:

1)10.80/12 =0.90

0.90+0.75=1.65

2)252/7=36 units

3)cost price = $9.25*225

= $2081.25

Selling price = $15.75*225

= $3543.75

Profit = Selling price - cost price

Profit = $3543.75 - $2081.25

=$1462.50

5) FV = L*(1 + rt),

Where FV is the amount to repay; L is the borrowed amount (the loan amount) and "r" is the annual interest as decimal; t is the time.

In your case L = 2400 dollars; r = 8% = 0.08 (as decimal) and t = 0.5 of a year (6 months).

Therefore,

FV = 2400*(1 + 0.08*0.5) = 2496.

In 6 months, Della Rilley must repay $2496

4) 654miles/55mph=11 hours, 53 minutes, 27 seconds ANS: ap.12 hours

time = distance/speed

6) 60*3=180mins

180/45=4

Ans: 4 days

7) This is a decrease of 8

a decrease of 28.57% rounded to two decimals

1.) 10.80 % 12 = .90 + .75 = 1.65 • 19.80

2.) 36 cases of 16 ounce were purchased

3.) a profit of 1,462.50

An electrician needs 1/3 of a roll of electrical wire to wire each room in a house. How many rooms can he wire with 1 2/3 rolls of wire?

Answers

Answer:

5 rooms

Step-by-step explanation:

1/3

Yeah it is 5. 1/3 + 1/3 + 1/3 + 1/3 + 1/3 is 1 and 2/3. So the electrician can only wire 5 rooms.

how to graph x<-28 on a number line

Answers

Draw out a number line. Make sure -28 is on the number line, along with other optional values (such as 0 perhaps). At -28, plot an open circle or hole. This indicates this value is not part of the solution set. This is because there is no "or equal to" as part of the inequality sign. Then shade to the left to indicate values smaller than -28.

So in summary, you'll have an open hole at -28 and shading to the left.

Answer:

Step-by-step explanation:

Put it in the calculator

Please help! ASAP! I will give brainliest!!
Tara works at a call center for a home shopping network. The table below shows the number of orders placed with the network per day based on the number of calls received per day by the network.

Number of Calls, x 200 250 300 350 400
Number of Orders, N 170 225 272 326 374

Which equation best models this set of data?
A. N = x2 - 27
B. N = -x2 + 27
C. N = -x + 27
D. N = x - 27

Answers

Answer:

Step-by-step explanation:

Answer:

its actually D

Step-by-step explanation:

hope this helps

If m = 28 and n = 4, what is the value of the following expression?
m - 5 • n + 4
A.
92
B.
96
C.
12
D.
4

Answers

Answer:

d.4

Step-by-step explanation:

28−(5)(4)−4

=28−20−4

=8−4

B.96 I think

28 - 5 • 4 + 4
23 • 4 + 4
92+4
96

Please help me i would appreciate it

Answers

Answer: oh gosh, rlly bad at math... let me do the maths quick, and will edit my answer to the correct answer i dont have enough time, -7a+11

Step-by-step explanation:

I need one ratio equivalent to the ratio of white socks to brown socks. I already have 28/1 and I need one more

Answers

Answer:

14/10

21/15

Step-by-step explanation:

just found number equivalent to 7/5

I think it’s 14/10....................

What is the reciprocal of 54.2984

Answers

Answer:

0.01841674892

Step-by-step explanation:

hope that helps

what is 2x – 4 = 2? Please answer soon!

(15 points and brainlyist to first person who answers!!!!)

Answers

add 4 to the right side of the equation to get sex then divide that by 2X and you get 3

Answer:

x = 3

Step-by-step explanation:

2(3) - 4 = 2

What is the solution for -10 -19

A.)x > -19
B.)x -1

Answers

Answer:A

Step-by-step explanation:positive is bigger then negative.

A
HOPE THIS HELPS SORRY IF IM WRONG

PLEaSE HELP THIS IS THE LAST ONEEE!!!!!1

Answers

Answer:

range-21

Step-by-step explanation:

Answer:

Step-by-step explanation:

The range is the difference between the highest and lowest values in a set of numbers. To find it, subtract the lowest number in the distribution from the highest.

help again. thanks again for helping me. also take ur time.

Answers

Answer:

Step-by-step explanation:

-10*7.5+115=p

115-75=p

p=40

The answer is B. No, there will be 40 papers left to grade.

Please help 20 points
The number of kilograms that an object weighs varies directly as the number of pounds. If an object weighs 45 kilograms or about 100 pounds, about how many kilograms is an object that weighs 70 pounds?

Answers

Answer:

This is the specific answer: 31.7515

Answer: 31.5

Step-by-step explanation:

To solve this ratio problem, you need the common ratio. Divide the amount of pounds by the amount of kilograms.

Step 1: Divide 100 pounds by 45 kilograms

100 ÷ 45 = 2.2

This is the common ratio

Step 2: Divide 70 pounds by 2.2

70 ÷ 2.2 = 31.5

This is the amount of kilograms in a 70 pound object

John paid $50 for renting a cycle for 5 hours. Which graph shows the relationship between the cost of renting a cycle for different hours?

Photos go from A to D. I'm guessing it's A but I still want to check.

Answers

Answer:

Step-by-step explanation:

You are correct. It is A

The cost is 10 dollars an hour. As the hours increase, so does the cost.

Find the arc length of the partial circle.
Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi and enter your answer as a decimal.

please help!!

Answers

Answer:

1/2pi

Step-by-step explanation:

Since the formula for circumference is 2*pi*r and we know the R=1 so the of the whole circle is 2pi. This is a quarter of a circle so the answer is 1/2pi

Answer:

1/2pi

Step-by-step explanation:

What is the slope of the line?

Answers

Answer:

Y= -4/-4x -1

Step-by-step explanation:

I think this is correct, I haven't done this in awhile though. I hope this helps

It is 4858833959694995.838485842829496959494596

Rapid Rental Car charges a $40 rental fee, $25 for gas, and $0.65 per mile driven. For the same car, Capital
Cars charges $55 for rental and gas and $0.75 per mile.
Part 1 out of 2
For how many miles is the rental cost at both companies the same?
The rental costs at both companies are the same at
miles.

Answers

Equation

40 + 15 + 0.25x = 45 + 0.35y

Solution

55 + 0.25x = 45 + 0.35y The only way you can do this is to assume that x and y are equal

subtract 45 from both sides

55 - 45 + 0.25x = 0.35x

10 + 0.25x = 0.35x Subtract 0.25x from both sides.

10 = 0.35x - 0.25x

10 = 0.1x Divide by 0.1

10/0.1 = x

x = 100 So if each car goes 100 miles, it should turn out to be the same no matter which company gets the rental.

Let's see if that is true.

Cost for the first company = 40 + 15 + 0.25x = 55 + 25 = 80 dollars.

Cost for the second company = 45 + 0.35x = 45 + 35 = 80 dollars.

Conclusion

Both rentals charge the same total amount when each car is driven 100 miles.

The charge is 80 dollars.

Hope this helped! :)

Athena was completing a puzzle picture by connecting ordered pairs of points. Her next point is described below:

X-coordinate (-1)

Which ordered pair could be Athena's next point? (ASAP AND I WILL GIVE BRAINLIEST)

Answers

Answer:

I'm not sure but maybe (-1, 2)

Corvette corvette hop in the jet

Diego measured the length of a pen to be 22 cm.

The actual length of the pen is 23 cm.

What is the percent error for Diego’s measurement?

Explain or show your reasoning.

Answers

0.95 I think this is the answer. If you get it wrong I’m sorry.

I’m pretty sure it’s 0.95!!!

please answer the question on the picture

Answers

Answer:

a 10%, 0.1, 1/10- b 50%, 0.5, 1/2- c 48%, 0.48, 12/25

Step-by-step explanation:

4(8x + 1) - 6(1 - 8x) .......

Answers

Answer:

80x-2

Step-by-step explanation:

4(8x+1)-6(1-8x)

32x+4-6+48x

32x+48x+4-6

80x-2

2(13+24x)or26+48x one of those

Plz help me with these, I don't understand this subject.

Answers

Answer:

Step-by-step explanation:

I might be wrong but it seems right.

Answer:

Step-by-step explanation:

That's just how you set up these equations don't know how to explain more

A(n) _________ states that two quantities either are not equal or may not be equal
a. Algebraic inequality
b. Compound inequality
c. Inequality
d. Solution set

Answers

Answer:

b. compound inequality

A toy store’s percent of markup is 35%. A model train costs the store $200. Find the markup.

Answers

70% would be the answer

PLZ HELP!!

1. Identify the following situation or equations as proportional or non-proportional and explain your reasoning.

The total cost of rent is determined by recording x months of rent at $1400 per month, plus a $150 application fee.

Answers

Answer:

1550

Step-by-step explanation:

Its non proportional because it doesn’t have an ONLY rate of change

Proportional goes
y= mx

Anybody need help with some work?
Don't feel like scrolling thru the thing so just put them here lol
Doesn't matter what subject.

Answers

Answer:

nope. im done with school :D

Step-by-step explanation:

Answer:

what is the word called for angles that form a straight line and are supplementary

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