Mathematics Middle School

Some people advise that in freezing​ weather, you should keep the gas tank in your car more than half full. ​Irene's car had Irene 5.7 gallons in the ​13-gallon tank on the coldest day of the year. filled the tank with gas that cost ​$3.80 per gallon. How much did Irene spend on​ gas?

Answers

Answer 1

Some of the information here isn’t needed, like that fact that it’s freezing and that the tank holds 13 gallons. If gas costs $3.80 per gallon, then 5.7 gallons would cost $27.66

Answer 2
It’s 27.74. We take 13-5.7 which is 7.3. Then we multiply 7.3x3.80 which is 27.74.

Related Questions

Find the Rate of Change for the situation.
A baby is 18 in. Long at birth and 27 in. long at ten months.

Answers

Answer:

The baby has grown nine inches in ten months, so I think that is the rate of change. For me to give a more specific answer would need the question to be more specific.

Step-by-step explanation:

ROC (Rate of Change)=9/10
Since we are giving points we can easily find the ROC
(0, 18)
(10, 27)
We will find the change of y over the change of x
If you need me to explain something, please ask.
Work:

Rhonda spends $129.95 on camping equipment before tax. The sales tax rate in her city is 8.25%. What is the total cost of Rhonda’s purchase?

Answers

Answer:

$140.67

Step-by-step explanation:

(ASAP 70 POINTS)
Use the equation "one sixth plus s equals 21 over 30" to answer the questions.

Part A: Determine two numbers that the solution to the equation is between. Support your answer using the correct vocabulary. (2 points)

Part B: Solve for the variable. Show your work. (2 points)

Answers

Answer:

5/21

Step-by-step explanation:

1/6 divided by 21/30

1/6 x 30/21

30/126

30 divided by 126 = 5/21

Answer:

5/21

Step-by-step explanation:

i need these pts

Use a model to demomonstrate your answers.
Three-fifths of the students in a room are girls. One-third of the girls have blond hair. One-half of the boys have brown hair.
a. What fraction of all the students are girls with blond hair?
b. What fraction of all the students are boys without brown hair?

Answers

First, you would divide One-third by three-fifths, which would be the answer to part A.For part b if 3/5 of the students are girls then the other 2/5 of the students are boys so you would divide 2/5 by 1/2.Those should be your answers.

Answer:

1/2

Step-by-step explanation:

Deshaun wants to buy a new MP3 player that sells for $80. The sales tax rate is 6.7%. What is the total cost of the MP3 player with tax included?

Answers

Answer:

$85.36

Step-by-step explanation:

Sale Tax: 6.70% or $5.36

5.36+80=85.36

You need to add them : 85:36

0.4(10x-15)+8=-3-x

please give me an example as well. I'd really appreciate it.

Answers

First, you would distribute the 0.4 through the parentheses

4x-6+8=-3-x

Then combine like terms

4x+2=-3-x

Get x on its own side,

5x=-5

Then divide by 5

x=-1

Check Answer by plugging in x

0.4(10(-1)-15)+8=-3-(-1)

0.4(-25)+8=-3+2

-10+8=-2

-2=-2

X=-1 so that should be the answer

Where should the decimal point be placed in the example shown

Answers

Answer:

After 8 and before 9. Should look like the following:

28.930

When placing a decimal point, when it come to an equation, you simply look on how many digits are after each of the numbers in the equation:

5.26 and 5.5 have a total of 3 numbers after there decimals so that is how many times you will move the decimal to the right of your answer.

Step-by-step explanation:

Hope it helps! =D

the decimal goes after the 28.

28.930

scalene triangles are symmetric. true or false

Answers

False. A scalene triangle is a triangle with no lines of symmetry
False it has no lines of symmetry

What is (3x2.05)+(_x1.09)+(2x_)+(_x_) I NEED HELP PLEASE SOMBODY

Answers

What are the numbers in those underscores?

3 lb. peppers

1 lb. onions

2 lb. broccoli

1 lb. mushrooms

1 bag of white rice

Price Per Pound Total Price

Record the price of each item. Then add up the total cost of your meal.



help please?

Answers

Answer:

well it depends on what the cost per pound would be per item such as if every 1lb of peppers was $1.50 then you would do $1.50 x 3 = $4.50 but i dont have the total price per item so thats as much as i can help

hope this helps you

Step-by-step explanation:

I need help asap! 40% of the tickets sold at an amusement park were discount tickets. If the park sold 80 tickets in all, how many discount tickets did it sell?

Answers

32 discounted tickets
40% is 2/5. 80 x 2/5 is 32.

8b + 16

2(6m +2)

I'm not really sure what the letters stand for in this context

Answers

the letters are a variable, when you have different variables you cannot plus or minus them like in this situation - 8b + 16

16 has no b's for plus 8b

2(6m +2) - in this expression we can multiply in which is 12m + 4

Ok so the letters are variables also can indicate any number so in the 8b+16 it is telling you that 8 times any number plus sixteen. And for the other variable m it is standing for when you multiply 2 times 6m which is 12m and then 2 times 2 which is four, so the inquisition for this equation would be 12m+4

I need help ...................................

Answers

Can you show the whole problem so people can help u

what is 32 -5n ≥ 7 -5 (n-5)

Answers

Answer:

Step-by-step explanation:

32-5n ≥ 7-5n-25

32-5n ≥ 5n-18

18+32-5n ≥ 5n-18+18

50-5n ≥ 5n

50/5-5n/5 ≥ 5n/5

10-n ≥ n

Find the total cost to the nearest cent. $24 lunch; 15% tip

Answers

i just took 15% of the 24 and its 2.60 and then u add

10% of 24= 2.4
5% of 24= 1.2
15% of 24= 3.8
24+3.8
27.8

Write an equation that matches the scenario using the variable “n.”
The difference of three times a number and four is the same as seven times a number plus eight

Answers

Answer:

3n-4=7n+8

Step-by-step explanation:

Consider a variable n

three times of number: 3n

seven times of number: 7n

so according to condition:

3n-4=7n+8

3n-4=7n+8 I think so

256-[tex]3^{5}[/tex]

Answers

Answer: 13

Step-by-step explanation:  256-(3^5).
3^5=243
256-243=13

Please answer quickly and correctly, and add the steps to solving the math equation!

Answers

^^^^^^^^^^^^^^^^^^^^^
A=21
B= -21
C= Negative or (-) because 2x2=4
Then -2x2=-4 so -4x4=16
A negative times a positive = a negative

You are renting a house in Cancun for a week at $4000. What is the cost per day?

(Show your answer in dollars and cents: For example $300 is entered as 300.00)

Answers

The cost per day is $571.42

Answer:

The cost per day would be $571.42 per day.

Step-by-step explanation:

You would divide 4,000 by 7 because there are seven days in a week and the rent is 4,000.

What is the value of the expression (−9)(−10)?
(NEED AWNSER ASAP)

Answers

Answer:

90

Step-by-step explanation:

when  you multiply two negative integers they always equal positive so in this case its (-9) x (-10), you can just do 9x10 which gets u 90

Multiplying two positive integers always result in a positive integer.

Multiplying two negative integers always result in a negative integer.

Multiplying a positive or negative integer always result in a negative integer.

90
because negative x negative is always positive and 9x10 is 90

3x−1=1−3x
IT EQUALS X = 1/3 BUT SOEONE PLEASE HELP ME UNDERSTAND THE STEPS

Answers

Answer:

There is no solution to this equation

Step-by-step explanation:

Answer:

x=1/3

Step By Step Explanation:

Rearrange terms

add 1 to both sides

simplify

add 3x to both sides

simplify

divide both sides by the same factor

simplify

Please help ASAP! Thanks!!♡♡

Answers

Answer:

9F = 7.5, so F = 7.5/9 = 75/90 = 5/6

Step-by-step explanation:9F = 7.5, so F = 7.5/9 = 75/90 = 5/6

From the graph below, how much money will be saved after 5 weeks?



Question 4 options:

$55


$50


$60


$30

Answers

Answer: 55?

Step-by-step explanation:

I just looked at the bottom where the five is and went up to where the blue line touched the black and where it crossed and it was In the middle of the 50 and 60 so it’s 55.

A box of cereal states that there are 81 calories in a 3/4​-cup serving. What is the unit rate for calories per​ cup? How many calories are there in 2 cups of the​ cereal?

Answers

Answer:

There are 108 calories in a cup

There are 216 calories in 2 cups

Step-by-step explanation:

In order to find out the unit rate for each cup, you must divide 81 by 3/4 which is 108, then we multiply that by 2 which equals to 216

Answer:108 in one cup and 216 in 2 cups

Pls help me with my math

Answers

Answer:

729

Step-by-step explanation:

Alright so our 2 big things here are order of operations and laws of exponets.

1st we need to find (-3)^4 and (-3)^2.

-3 raised to 4 is 81, and -3 raised to the 2nd power is 9.

So now our simplified equation is (81/9)^3.

Now we use the power of a quotient rule from the laws of exponets (look this name up and you'll easily find it).

So now our equation is (81^3)/(9^3). This equals 729.

Hope this helps!

The answer to the question is 729!

Find the range
Find the mode
Find the median
Find the mean
Please help me

Answers

Range: 2 to 6
Mode: 3 or 5
Median: 2
Mean: 28/7 = 4
Range:2 to 6
Mode:3
Median: 2
Mean: 28/7 =4

Find the slope from the table of values.

Question 5 options:



2




-2




1/2




-1/2

Answers

The answer is 2 because for X it goes up by two and for Y it goes up by 4 the it’s rise over run so 4/2 which is 2

Use the symbol < , = and > to compare each number.

a) |-24| _ |-22|
b) 18 _ |-28|

(absolute value)

Answers

First answer >

second answer <

The negative have more value the are two lines outside means absoulte value

a. |-24| > |-22|
-24 is greater than -22 because in absolute value comparing values with negatives just see it without the -
b. 18 < -28
18 is less than 28.

helpppp
Consider the following expression:

Answers

Answer:

3a and 2a are like terms

5b is a term

4 is a constant

Step-by-step explanation:

Answer:

3a and 2a are like terms

5b is a term

4 is a constant

Step-by-step explanation:

DUE TODAY (10/11/22) Need help on two questions!!

What term would you move using inverse operations to put this equation into standard form (Ax+By=C)

3x = 5 - 2y


5 by subtracting 5 to the other side

3x by dividing by 3 on both sides

-2y by adding 2y to other side


Natalie wanted to find the y intercept for the standard form of this equation. Here are her steps. Did Natalie make a mistake? If so, which one was her first? If not, indicate that as well.

Solve for the y intercept by substituting 0 for x.

2x + 4y = 20


Step 1: 2(0) + 4y = 20

Step 2: 0 + 4y = 20

Step 3: 4*4y = 20 * 4

Step 4: y = 80


A: Step 1

B: Step 2

C: Step 3

D: Step 4

E: Natalie made no mistakes

Answers

First problem you add 2 y second problem is step 3
#1) -2y by adding 2y to other side

#2) C: Step 3

Explanation:

#1) 5 is the only number without a variable, so isolating it would make the standard form true.

#2) Opposite of multiplication is division, so rather than multiplying 4 to both sides, Natalie should've divided.
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