Answer:
= average value of the data set
n = number of data values
x_i = data values in the set
Step-by-step explanation:
Metal mercury at room temperature is a liquid. Its melting point is -39.3°C. The freezing point of alcohol is-114.6°C. How much warmer is the melting point of mercury than the freezing point of alcohol? Show your work
Answer:
-75.3
Step-by-step explanation:
-114.6 - (-39.3) = -75.3
The answer choices are at the bottom
Answer:
Step-by-step explanation:
Alex wants to buy a case of drinks, he doesn’t have enough. The cost of the case is $30. He already has $2. He gets $8 every hour for work. How many hours does he need to work to get the amount he needs? Explain what your solution means in the context of the problem.
Answer:
Alex will need to work 4 hours.
Step-by-step explanation:
We know that Alex already has $2. This means that to get $30 he now only needs to get $28. If he gets $8 per hour, we know that 8 x 3 = 24, but that isn't enough. In this case, 3 is how many hours he works. Because $24 isn't enough, he needs to work 4 hours to get $32 in order to buy the case. Even though he has more money than he needs, he will be able to buy the case and save some extra money.
Answer:
3.5
Step-by-step explanation:
Wright, an equation first like this,
2+8x=30 because he needs 30 dollars but already has 2 and earns 8 dollars per hour.
Solve:
2 + 8x = 30
30-2= 28
28/8= 3.5 so he would need to work 3.5 hours.
What number should go in the box?
Answer:
3^5
Step-by-step explanation:
I am sure
........ hope it helps
Please help me with this
Jeremy used a recipe that called for cup of honey. He wants to know how many teaspoons this amount is equivalent to, so he set up the expression below.
1/4 cup/1 * 1 cup/16 tablespoons * 3 teaspoons/1 tablespoon
What mistake did Jeremy make in converting cups to teaspoons?
A. He reversed the units in the numerator and denominator of the second term.
B. He reversed the quantities in the numerator and denominator of the second term.
C. The second term is not needed.
D. He put the terms in the incorrect order.
Answer:
B is the correct answer :v
Step-by-step explanation:
Compare the fractions in each pair. Select the correct sign.
Answer:
<
Step-by-step explanation:
if that is one of the signs that is it
Answer:
<
Step-by-step explanation:
I NEED HELP
Betty wants to put new cabinets in her kitchen. She measures one side of her kitchen and finds it measures 181818 meters.
Which measurement did Betty find?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Length
(Choice B)
B
Perimeter
(Choice C)
C
Area
There are 24 boys and 16 girls on a playground. What is the ratio of boys to total number of children on the playground?
Select all the equivalent ratios that represent this relationship.
24:40
3:2
6:10
24:16
3:5
6:4
plz help meeee
Answer:
the awnser is 24:40 and 3:5
Step-by-step explanation:
because there re 24 boys and 16 girls and the question asked how many boys to the whole number of children so you ad them toghther
BRAINLIEST PLEASE
Answer:
3:5
Step-by-step explanation:
24+16 = 40
24/40 simplify to 6/10 to 3/5
I need help on this please
Answer: 2.5 then 100.5
Step-by-step explanation:
what is the answer plez help
Identify this sequence: 5, 15, 45, 135, …
Arithmetic
Geometric
Neither
Answer:
5 * 2 is 10 + 5 and then 15 * 2 + 15 45 * 2 + 45
Step-by-step explanation:
times it by to add that number
Answer: You are multiplying the number in front by 3
Step-by-step explanation: 5 x 3=15 and 15 x 3=45 and 45 x 3=135.
Ariel said that in the expression 2x + 2x2 - 6, the 2x and the 2x2 are considered like terms. Her friend, Kamika said they are not considered like terms. Who is correct? Explain why.
Answer:
If by "2x2" you mean 2x², Kamika would be correct. The exponents must be the same for them to be like terms.
Step-by-step explanation:
help plz Ik its a lot but I will give you 40
Answer:
1. 343
2. 64
3. 81
4. 12.25
Step-by-step explanation:
Answer:
[tex]7^{3}[/tex] = 343
4 cubed = 64
[tex]9^{2}[/tex] = 81
[tex](3.5)^{2}[/tex] = 12.25
Step-by-step explanation:
[tex]7^{3}[/tex] is the same thing as 7 * 7 * 7.
7 * 7 = 49
49 * 7 = 343
4 cubed can be written as [tex]4^{3}[/tex], which is the same as 4 * 4 * 4.
4 * 4 = 16
16 * 4 = 64
[tex]9^{2}[/tex] is the same as 9 * 9.
9 * 9 = 81
[tex](3.5)^{2}[/tex] is the same as 3.5 * 3.5.
3.5 * 3.5 = 12.25
What is the value of the 7 in the number 2.703?
7
0.007
0.07
0.7
A food company produced 65 pounds of a new cereal. The marketing department wants to put the cereal into 4-ounce promotional boxes that will be given away for free.
Assuming that the food company wants to use up all 65 pounds of the new cereal, will the marketing department need to order more than 260 4-ounce boxes? Defend your response. EXPLAIN!!!!! (will give brainlest)
Answer:
No... yo would only need 35 4 oz. boxes
Step-by-step explanation:
If you know 16 oz. per pound. 16 times the number of pounds, and that will give you the total of oz. They dived by the 4 oz. and you will get your answer.
Answer:
you only need 35 4 oz. boxes
Step-by-step explanation:
how many solutions dose 3x+2=2x+2+x have explain why below remember explain
Answer:
All real numbers are solutions.
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
3x+2=2x+2+x
3x+2=(2x+x)+(2)(Combine Like Terms)
3x+2=3x+2
3x+2=3x+2
Step 2: Subtract 3x from both sides.
3x+2−3x=3x+2−3x
2=2
Step 3: Subtract 2 from both sides.
2−2=2−2
0=0
Can somebody please help me
does anybody need any help
Answer:
Other than with life basically no.
Step-by-step explanation:
PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!
will give brainlest pls answer
Rewrite the equation from Part D by factoring the side that contains the variable p.
Previous equation answer for Part D (for context): r = 65 - 60p
Answer:
r = 5(13-12p)
free chance to get brainlyest just type in something randumb
Answer:
im a smart
Step-by-step explanation:
bxskbDjas
Christel wants to know what the most popular color at her school is. She surveys students grades 1,2,3.
Will the sample be representative or biased? And can you please explain how that answer works. Thx! :)
Answer:
It will be biased.
Step-by-step explanation:
By surveying only grades 1, 2, and 3, she is not taking a representation of the entire school. It is possible that the popular color or the color the students like would change over time and the opinion of the younger kids could be different from that of the older kids. Therefore, the sample is biased unless she surveys students from all grades.
Riemann Hypothesis: Explain how to answer it ( hardest math problem in the world)
Answer:
Addicts the remote hypothesis is a conjecture that the remote data function has it zeroes only at the negative even integers in complex numbers with real part half many considered to be the most important unsolved problem in pure mathematics is of great interest in number theory because it implies results about the distribution of prime numbers
The door on a model building is 10 inches tall. The door on the actual building is 4 yards tall. What was the scale used?
(This is hopefully the question I ask today involving math)
Look at the attached images. Each image is a separate question.
Answer:
angle 2: 70
angle 1: 80
Step-by-step explanation:
since they are parallel, they equal each other
(10x11)-20+1=
if show work i will mark brainliest
Answer:
91
Step-by-step explanation:
10x11=110-20=90+1 = 91
Hope this helps plz hit the crown ;D
Answer:
The answer is 91.
Step-by-step explanation:
(10 x 11) - 20 + 1
The first step would be to do the parentheses which would give you 110.
110 - 20 + 1
Next you can subtract 20 from 110 which would give you 90.
90 + 1
The final step would be to add
answer = 91
That. Please help me.
Pls help ill give brainiest to the person with the right answers
Answer:
first question : August
second question : July
Step-by-step explanation:
August only went up by 17,000 which is the smallest number in the table
July decreased 115, 000 which is lower than 190,000 and is decreasing
1.How many fluid ounces are in 9 And 1/2 cups? Write a proportion and solve.
2. About how many centimeters are in 70 inches? Write a proportion and solve.
3. Find the unit rate for 90% books to 10% magazines. Consider the unit rate to be the number of books per magazine. unit rate= ________
4. Find the unit rate for 60% water to 40% juice. Consider the unit rate to be the number of liters of water per 1 liter of juice. Unite rate=_______
5. Find the percentage of red balls and the percentage of green balls in the basket if the unit rate is 1 (Note: The unit rate is the number of red balls per one green ball.)
____ % red balls to ___%of green balls
Answer:
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MATH REVIEW: USEFUL MATH FOR EVERYONE
SECTION 1.2. RATIOS AND PROPORTIONS
Ratios and Proportions
Algebraic Expressions
Exponents
Logarithms
Glossary and Links
back to Ratios, Page 1
A proportion is similar to a ratio, except that it indicates a part of a whole, and so the numerator arises from the denominator. For instance, a researcher might say that, for every ten students in the residence hall, five were women. Five over ten (5 / 10) is a proportion. Proportions must have all of the numbers in the same units, and are frequently written as fractions.
What happens when you want to write a proportion, but the numbers are given in different units? Suppose you were asked to write the proportion of 3 cups to 56 ounces (3 cups out of 56 ounces). You must write a proportion of either cups to cups (cups:cups) or ounces to ounces (ounces:ounces), so you will have to convert one of the numbers so that both numbers are expressed in the same unit of measurement. Let's convert cups to ounces so we can express the ratio as ounces:ounces. Since there are 8 ounces in one cup, 3 cups are equal to 24 ounces:
3 cups * 8 ounces/cup = 24 ounces
Now the two numbers 3 cups and 56 ounces can be written as the following ratio:
24 ounces to 56 ounces,
24:56,
or, now that the unit of measurement is the same, 24:56 can also be written as a proportion:
24/56
You may need to solve some problems involving ratios.
If you divided 36 into two parts in the ratio of 1:2 and one part is a and the other is b, you can find the value of a and b:
You know that
a+b = 36
And
a/b = 1/2
You can use these equations to solve for a and b, or you can use the following simple method:
Find out how many units are in 1 part of the ratio. To do this, divide the total by the number of parts.
Number of parts: 1 + 2 = 3.
Number of units in each part: 36/3 = 12.
Then, multiply the number of units in each part by the number of parts in each variable.
a = 1 * 12 = 12
b = 2 * 12 = 24
As an aside . . .
Percentages are so frequently used that we should spend a little time on them here. The powerful thing about percentages is that they all have the same denominator: 100. When two fractions have the same denominator, comparisions can be made very easily.
0.21 = 21% = 21 / 100
Step-by-step explanation: