Answers
Answer:
you should try math
Step by step explanation:
way
Related Questions
Evaluate the expression 4² -3.4+ 7
Answers
Answer:
19.6
Step-by-step explanation:
there
Travis bought 8 new books for $7.99 each. How much did he spend on books?
Answers
Answer:
$63.92
Step-by-step explanation:
find x plsssssssssssssss
Answers
The angles are vertically opposite,
therefore,
9x + 22 + 130 = 180
9x + 152 = 180
9x = 180 - 152
9x = 28
[tex]x = \frac{28}{9} [/tex]
[tex]x = 3 \frac{1}{9} [/tex]
NEED HELP SOLVING PLEASE
Answers
y = 114
x = 54
Explanation:
Angle y is some kinda angle so it’s like same as 114
114 is vertical so
114 + 12 = 126
180 - 126 = 54
You have $10.50 to spend at the bowling alley. It costs $3 to rent shoes
and $2.50 per game. How many games can you bowl?
Answers
Answer: 3 games
Step-by-step explanation:
10.5
First subtract 3 because you will need shoes.
7.50
Now divide by 2.50
7.5/2.5
3 GAMES
Susan gets a haircut that cost $20 she leaves a 15% tip. she also has to pay 8.4% sales tax. how much will it cost.
Answers
Answer:
$24.68
Step-by-step explanation:
15% of 20=3
8.4% of 20=1.68
20+3+1.7=24.68
I did this by multiplying .15 by 20 to get 3, and multiplying .084 by 20 to get 1.68. Again, add it all together to get $24.68.
Hope this helps :)
The following are the heat-producing capacities of coal from two mines (in millions of calories per ton): Mine A: 8,500, 8,330, 8,480, 7,960, 8,030 Mine B: 7,710, 7,890, 7,920, 8,270, 7,860. Assuming that the data constitute independent random samples from normal populations with equal variances, construct a 99% confidence interval for the difference between the true average heat-producing capacities of coal from the two mines.
Answers
Answer: The confidence interval will be -91.87 < μ₁-μ₂ <751.87
Step-by-step explanation: Confidence Interval is the interval of certainty in which the true population mean is in.
In a confidence interval for the difference between two averages with a sample size less than 30, the calculations are:
[tex]x_{1}-x_{2}[/tex] ± [tex]t.S_{p}\sqrt{\frac{1}{n_{1}} +\frac{1}{n_{2}} }[/tex]
in which
x₁ and x₂ are the sample mean of each data set
t is the probability found in the t-table whose df = n₁ + n₂ - 2
[tex]S_{p}[/tex] is the pooled estimate of the common standard deviation, assuming variances are similar, and can be calculated as:
[tex]S_{p}=\sqrt{\frac{(n_{1}-1)(s_{1})^{2}+(n_{2}-1)(s_{2})^{2}}{n_{1}+n_{2}-2} }[/tex]
n₁ and n₂ are sample sizes
The data to construct the interval are:
Mine A:
x₁ = 8260
s₁ = 251.9
n₁ = 5
Mine B:
x₂ = 7930
s₂ = 206.52
n₂ = 5
Then:
[tex]S_{p}=\sqrt{\frac{(5-1)(251.9)^{2}+(5-1)(206.52)^{2}}{8}[/tex]
[tex]S_{p}=\sqrt{\frac{253814.44+170602.04}{8}[/tex]
[tex]S_{p}=[/tex] 230.33
Using a table, for a 99% confidence and df = 8, t-score = 2.896.
Doing calculations:
(8260-7930) ± (2.896)(230.33)([tex]\sqrt{\frac{1}{5} +\frac{1}{5} }[/tex])
330 ± (2.896)(230.33)([tex]\sqrt{0.4}[/tex])
330 ± 421.87
Interval will be
[tex]-91.87<\mu_{1}-\mu_{2}<751.87[/tex]
A 99% confidence interval for the difference between the true average heat-producing capacities of coal from the mines is between -91.87 and 751.87
Abigail invested $29,000 in an account paying an interest rate of 2.1% compounded continuously
Answers
Answer:
6090
Step-by-step explanation:
what is the approximate value of √42, to the nearest whole number?
Answers
what is the solution of sqaure root -4x = 100
Answers
Answer:
I’m pretty sure it’s -2500
Step-by-step explanation:
Answer:
I think it would be x = -2500
Step-by-step explanation:
You square both sides to get rid of the square root and get -4x = 10000 then divide 10000 by -4 to get -2500
Hello! :)
Please help me answer this question ! And explain how you answers it. I will give brainslt :)
Answers
Answer:
The correct answer is A.
Step-by-step explanation:
The rule with a function is every input has exactly one output. In the answer choices b, c, and d all of them has a repeating input or x value.
Directions: Find the value of x.
102
(9x +12)
Answers
Answer:
10
Step-by-step explanation:
you subtract 12 from 102 and get 90. then you divide 90 by 9 and it equals 10. to figure these problems out I always do the order of operations in reverse starting with the answer.
Need answers for 5 and 6 please it’s algebra math hurry please
Answers
5a) -2/3
5c) y = -2/3 + 2
6a) x intercept point is (4,0) and y intercept point is (0,2)
6b) -1/2
6c) im pretty sure it's y = -1/2 -2
A teacher's age is 6 years greater than 2 times a student's age. A principal's age is 10 years greater than 3 times
the student's age.
If x represents the student's age in years, which expression represents how many years older the principal is than
the teacher?
4x + 1
B
x + 4
c
4x + 5
DX + 16
Answers
Answer:
b. x + 4
Solution:
Student's age = x
Teacher's age = 6 + 2x
Principal's age = 10 + 3x
Difference in the age of the teacher and principal
(10 + 3x) - (6 + 2x)
= 10 + 3x - 6 - 2x
= (10 - 6) + (3x - 2x)
= 4 + x
The histogram below displays the distribution of 50 ages at dHere are the number of hours that 9 students spend on the computer on a typical day:_______.
3 3 5 7 7 9 9 9 12
What is the mode number of hours spent on the computer?
Answers
Answer:
9
Step-by-step explanation:
There are 9 students who spend the following number of hours in a typical day on the computer.
3,3,5,7,7,9,9,9,12
The mode is the number that is of the highest frequency in any given set of values.
The mode number of hours is the highest number of hours spent on the computer.
The number 9 occured the most times. Therefore the mode hour is 9
39 is 40% of what number (please explain)
Answers
Answer:
97.50
Step-by-step explanation:
dont have one XD
Answer: 97.50
Step-by-step explanation:
just do 39 divided by 40%
need help quick, i have a timer
Answers
Answer:
You should be good with A
Step-by-step explanation:
Need help with some questions
https://kami.app/Cg5YfnU2L4ji
Answers
Answer:
Step-by-step explanation:
Thanks I will go there soon
The book store is having a sale. Every book is $5 off, regardless of the original price.
The sale price for every book is $5 less than the original price.
Let x = original price
Let y = sale price
Which equation represents this situation?
A. y = × + 5
B. y = × - 5
C. y = 5x
D. y = × ÷ 5
Answers
Answer:
y=x-5
Step-by-step explanation:
sale price (y) is equal to the original (x) minus five dollars
Answer:
y = x - 5
Step-by-step explanation:
I took the test on A P E X
PLEASE HELP
If the spinner is spun, what are the ODDS that the pointer lands on the number 6 or greater?
Answers
Answer:
What's the spinner? How many numbers are on it?
Step-by-step explanation:
Ted has finished 3 problems on a test.
If this is 15% of the problems, how
many problems are on the test?
Answers
Answer:
20 problems
Step-by-step explanation:
Okay, so 100/15 is 6 2/3. That means we need to multiply 3 by 6 2/3. When we do this, we get 60/3, which we can simplify to 20. That means there are 20 problems on the test. I hope this helps!
Complete the table by converting the fractions (in the first column) into decimals (in the second column) and vice versa. Fractions Decimals -4/5 1 2/100 0.13 3/4
Answers
Answer:
Step-by-step explanation:
-4/5=-8/10=-0.80
12/100=0.12
0.13=13/100
3/4=75/100=0.75
Please solve this question
3x-9<12
Answers
Answer:
Step-by-step explanation:
3x-9<12
You carry the 9 to the other side and do the inverse(opposite of take away
3x<12+9
3x<21
3x/3x
To cancel out the the x you must devide them together and then devide 21÷3
21/3=7
X<7
Answer: x<7 or (-infinity,7)
Step-by-step explanation:
3x-9<12
3x<21
x<7
3(c+4) what's da answer
Answers
Answer:
c=4
Step-by-step explanation:
3(c+4)
3c+12
c=4
I hope this is correct and have a great day
need help with last two questions plsssss help
Answers
Answer:
The answer for desert is 34.986 clicks, or 35 clicks rounded up. You get this by multiplying 4.2 and 8.33.
The answer for fuschia is 6 clicks, and you get this by multiplying 0.75 and 8.
Henry is making a corn grits recipe that calls for 14 cup of corn grits for every 12 cup of water.
How much water will he need if he uses 112 cups of corn grits?
Answers
Answer:
2 cups of water
Step-by-step explanation:
Player 1 and player 2 are running laps around a field. Player 1 runs 1 lap every 4 minutes, while player 2 runs 1 lap every 15 minutes. If player 1 and player 2 begin their run at the same time and location on the field, in how many minutes will they meet to begin their next lap together?
Answers
Answer:
15 min
Step-by-step explanation:
if it takes Player 1 one min he will meet player two at there second lap after 15 min
If player 1 and player 2 begin their run at the same time and location on the field, In 60 minutes will they meet to begin their next lap together.
What is LCM?The LCM of any two is the value that is evenly divisible by the two given numbers.
Given,
Player 1 and player 2 are running laps around a field
Player 1 runs 1 lap every 4 minutes,
player 2 runs 1 lap every 15 minutes
We need to find in how many minutes will they meet to begin their next lap together
We need to find the LCM of 4 and 15 to find the answer
4: 4, 8,12,16, 20,24,28,32,36,40,44,48,52,56,60
15: 15,30,45,60
The least common multiple of 4 and 15 is 60.
The two players meet at the same point after 60 minutes.
Hence If player 1 and player 2 begin their run at the same time and location on the field, In 60 minutes will they meet to begin their next lap together.
To learn more on LCM click:
https://brainly.com/question/28932085
#SPJ2
A store owner offered a 25% discount off the regular price of a pair of shoes. The amount of the discount is $4.
What is the regular price of the shoes?
A $8
B $12
C $20
D $16
Answers
Answer:
D
Step-by-step explanation:
25% of 16 is 1/4x16=4, which leaves D as as your answer
Answer:
d
Step-by-step explanation:
instead of taking away 4 add it until you have 100%
Which two expressions are equivalent to 30+45
Answers
Answer:
there aren't any options, but anything that's = to 75 will be equivalent to this expression
Step-by-step explanation:
Need help please it’s due today show work
Answers
Answer:
30+ deg -10 =20+deg
so answer is see mark brainliest plz