$127 is the answer.. can i have a brainliest? :)
what is the answer to 2(x - 5) = 10
Answer:
0 must be correct answer
Solve for x
4(3x – 5) - 2x = -30
Answer:
your answer is -1
Step-by-step explanation:
D = distributive property
S = switch
C = combine
I = inverse operations
F = finalize
[tex]4(3x - 5) -2x = -30\\12x -20 -2x = -30\\12x -2x = -30 + 20\\10x = -10\\x = \frac{-10}{10}\\ x = -1[/tex]
carlton thinks that converting metric units is as easy as moving the ________
Answer:
Carlton thinks that converting metric units is as easy as moving the decimal pointStep-by-step explanation:
When you convert the unit, you move decimal point on your answer from the left to the right or from the right to the left the number of places as per relevant prefix.Example:
1 meter = 1000 millimeters (1.0 m = 1000.0 mm) 1 milligram = 0.001 grams ( 1.0 mg = 0.001 g)see attached for prefixes
Answer:
decimal point
Step-by-step explanation:
To convert a metric unit, you are going to either multiply or divide.
Some examples include:
km/1000 = mm/100 = cmcm/10 = mmmm*10 = cmcm*100 = mm*1000 = kmBest of Luck!
All interior angles are congruent True or False
Answer:
true
Step-by-step explanation:
This table shows the five most common elements in the earth's crust along with the
percent of the crust that each element composes. About what percent more is
oxygen than silicon?
Answer:
18.88 more percent
Step-by-step explanation:
46.60-27.72 =18.88 meaning, it has 18.88 more percent than silicon
Answer:
Step-by-step explanation:
18.88 more percent
A model rocket is launched straight up. Its height in feet (y) above the
ground x seconds after launch is modeled by the quadratic function: y=
-16x2 + 216x + 6.
How many seconds did it take the rocket to reach its maximum height?
Answer:
ground x seconds after launch is modeled by the quadratic function: y=
-16x2 + 216x + 6.
How many seconds did it take the rocket to reach its maximum height?
In the diagram, Ray K QJKM is a straight angle. Which statements about the diagram are true? Check all that apply. Angle is an angle bisector. AngleLKQ is bisected. mAngleJKL = 45° mAngleMKQ + mAnglePKQ = mAnglePKM Line segment P K is an angle bisector. AngleJKL Is-congruent-to AngleQKM
Answer:3,4,5 are the right anwsers
Step-by-step explanation:
i just did it
Answer:
there right^
Step-by-step explanation:
How many ML are equal to 4.567x10^4
Answer:45670 ML
Step-by-step explanation:
Sorry if wrong.
15 ÷ 13965 long division
Answer:
0.001
Step-by-step explanation:
We have the equation:
15 ÷ 13965 = 0.001
Calculated to 3 decimal places.
Now see the attachment,
Solve for X!?
PLEASE HELP MEE!!!!!!!
Answer:
x=15
Step-by-step explanation:
A personnel manager has found that historically the scores on aptitude test given to applicants for entry-level positions follow a normal distribution with a standard deviation of 32.4 points. A random sample of nine test scores from the current group of applicants had a mean score of 187.9 points.a) Find an 80% confidence interval for the population mean score of the current group of applicants.b) Based on these sample results, a statistician found for the population mean a confidence interval extending from 165.8 to 210.0 points. Find the confidence level of this interval.
Answer:
A) An 80% confidence interval for the population mean score of the current group of applicants is (172.8124,202.9876)
B)The confidence level of this interval is 96%
Step-by-step explanation:
Mean =[tex]\mu = 187.9[/tex]
Standard deviation = s= 32.4
n = 9
A) Find an 80% confidence interval for the population mean score of the current group of applicants.
Degree of freedom = n-1=9-1=8
Significance level = [tex]\alpha = 0.2[/tex]
So, [tex]t_(\frac{\alpha}{2},df)=t_(\frac{0.2}{2},8)=t_(0.1,8)=1.397[/tex]
Formula of confidence interval :
CI : [tex]\bar{x}-Z_{(\frac{\alpha}{2})} \times \frac{s}{\sqrt{n}} , \bar{x}+Z_{(\frac{\alpha}{2})}\times \frac{s}{\sqrt{n}}[/tex]
So, CI: [tex]187.9-1.397 \times \frac{32.4}{\sqrt{9}} , 187.9+1.397 \times \frac{32.4}{\sqrt{9}}[/tex]
CI:(172.8124,202.9876)
So, an 80% confidence interval for the population mean score of the current group of applicants is (172.8124,202.9876)
B)Based on these sample results, a statistician found for the population mean a confidence interval extending from 165.8 to 210.0 points. Find the confidence level of this interval.
Standard error of sample mean = se =[tex]\frac{s}{\sqrt{n}}= \frac{32.4}{\sqrt{9}} = 10.8[/tex]
Margin of error = 210 - 165.8 = 44.2
Critical test statistic =[tex]\frac{\text{margin of error}}{2 \times \text{standard error}} = \frac{44.2}{2 \times 10.8} = 2.0463[/tex]
Using excel
Confidence interval = [tex]2 \times [1 - NORMSDIST(2.0463)] = 2 \times (1 - 0.98) = 2 \times 0.02 = 0.04[/tex]
Confidence level= 1 - 0.04 = 0.96
Confidence interval is 96%.
Hence the confidence level of this interval is 96%
Using the z-distribution, it is found that
a) The 80% confidence interval for the population mean score of the current group of applicants is (174.1, 201.7).
b) The confidence level is of approximately 96%.
Item a:
We are given the standard deviation for the population, which is why the z-distribution is used to solve this question.
The information given is:
Sample mean of [tex]\overline{x} = 187.9[/tex].Population standard deviation of [tex]\sigma = 32.4[/tex].Sample size of [tex]n = 9[/tex].The confidence interval is:
[tex]\overline{x} \pm z\frac{\sigma}{\sqrt{n}}[/tex]
The critical value, using a z-distribution calculator, for a two-tailed 80% confidence interval is z = 1.28.
[tex]\overline{x} - z\frac{\sigma}{\sqrt{n}} = 187.9 - 1.28\frac{32.4}{\sqrt{9}} = 174.1[/tex]
[tex]\overline{x} + z\frac{\sigma}{\sqrt{n}} = 187.9 + 1.28\frac{32.4}{\sqrt{9}} = 201.7[/tex]
The 80% confidence interval for the population mean score of the current group of applicants is (174.1, 201.7).
Item b:
The margin of error is given by:
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
Hence:
[tex]\frac{210 - 165.8}{2} = z\frac{32.4}{\sqrt{9}}[/tex]
[tex]10.8z = 22.1[/tex]
[tex]z = \frac{22.1}{10.8}[/tex]
[tex]z = 2.05[/tex]
Using a calculator, it is found that the confidence level is of approximately 96%.
A similar problem is given at https://brainly.com/question/25649070
seven thousandths as a decimal. *
Answer:
IT IS , 0.007
Step-by-step explanation:
Hope you do great !!
Answer:
0.007
Step-by-step explanation:
.0 - tenths
0 - hundredths
7 - thousandths
Please help ASAP (28 points)
5) x = 8
6) z = 49°
Step-by-step explanation:Hi there !
5)
we have opposite angles =>
5x = 2x + 24
5x - 2x = 24
3x = 24
x = 24 : 3
x = 8
6)
The sum of the three interior angles in a triangle is always 180° !
x = 180° - (28° + 39°)
= 180° - 67°
= 113°
x ; y = supplementary angles =>
x + y = 180° =>
y = 180° - x
= 180° - 113°
= 67°
z = 180° - (64° + 67°)
= 180° - 131°
= 49°
Good luck !
Four less than a number is greater than–28.
Answer:
x - 4 > 28
Step-by-step explanation:
x - 4 > 28
a number minus 4 is greater than 28
alyssa reads 7 1/2 pages of her book in 9 minutes ? what is her adverge reading rate in pages per minutes
Answer:
15/18 pages per minute
Step-by-step explanation:
[tex]7 \frac{1}{2} = \frac{7 \times 2 + 1}{2} = \frac{14 + 1}{2} = \frac{15}{2} \\ \\ average \: reading \: rate \\ = \frac{ \frac{15}{2} }{9} \\ \\ = \frac{15}{2 \times 9} \\ \\ = \frac{15}{18} \: pages \: per \: minute[/tex]
Which is equivalent to 56c^16/162c^3 squared after it has been simplified completely?
Answer:
B
Step-by-step explanation:
Just took the test plz mark brainliest
Answer:
B
Step-by-step explanation:
*Edgy 2020*
An object is moving at a speed of 7 feet per minute. Express this speed in meters per second.
Answer:
2.1 mpm
Explanation:
1ft = 0.3048 m
[tex]0.3048*7=2.1336[/tex]
The given speed in meters per second is 0.00356 m/sec.
Given that, an object is moving at a speed of 7 feet per minute.
We need to express this speed in meters per second.
How to convert feet per minute to meters per second?Feet per minutes. In SI units [tex]5.08 \times 10^{-3}[/tex] meters per second.
Meters per second is the base unit for measuring velocity or speed in the International System of Units (SI). Speed is a measure of distance travelled over time, velocity is speed in a given direction. 1 meter travelled over a period of 1 second = 1 m/s.
For an approximate result, divide the speed value by 1969.
Now, 7/1969=0.003555
≈0.00356
Therefore, the given speed in meters per second is 0.00356 m/sec.
To learn more about the speed visit:
https://brainly.com/question/7359669.
#SPJ2
The recipe calls for 1/2 cup of flour to make 8 servings, how many cups of flour are needed to make 20 servings?
HELP PLEASE HELP Please
in the diagram the value of sin P is
You divide the opposite over the hypotenuse
sin(angle) = opposite/hypotenuse
With respect to reference angle P, the opposite side is QR = 5 since it is the leg furthest from the angle P.
The hypotenuse is always the longest side and always opposite the 90 degree angle (the largest angle of any right triangle).
Econo motel charges $260 for 4 nights. At that rate, how much would 7 nights cost
Divide the cost for 4 nights by 4 to get cost per night.
260/4 = 65 per night.
Multiply cost per night by 7:
65 x 7 = 455
It would cost $455 for 7 nights.
Is the number 90,040 divisible by 8?
Answer:
yes it is
Step-by-step explanation:
90,040/8 is 11222
The function c(x)=6+8x gives the cost in dollars to rent one bicycle for x hours. What is the meaning of c^-1(10) in this situation?
A. The cost of renting bicycles for 10 hrs
B. The cost of renting 10 bicycles
C. The number of hours you can rent a bicycle for $10
D. The number of bicycles you can rent for $10
Answer:F
Step-by-step explanation:
Your credit card has a balance of $5400 and an annual interest rate of 17%. You decide to pay off the balance over two years. If there are no further purchases charged to the card, you must pay $266.94 each month, and you will pay a total interest of $1006.56. Assume you decide to pay off the balance over one year rather than two. How much more must you pay each month and how much less will you pay in total interest?
Answer:
5400/12= 450 paid
1006.56/2=503.28 interest
total is 5,903.28
total for paid 491.94 for months
Step-by-step explanation:
What is the quotient ?
-4/5 divided by 2
1) -1 3/5
2) -2/5
3) 1/2
4) 1 3/5
Answer: -2/5
Step-by-step explanation: It's -4/5 multiplied by 1/2 because you you have to find the reciprocal, so you flip 2, so it would become 1/2, then you multiply -4/5 and 1/2, which would get you -4/10, which can be reduced to -2/5. Hope this helps!
Answer: B
Step-by-step explanation:
HELP I WILL GIVE BRAINLIEST AND 20 POINTS TO CORRECT ANSWER-Hunter is rolling the dice to see what the probability of rolling different numbers is. Use the drop-down menus to give the probability of rolling the following numbers.
2
3 or less
5 or more
8
Answer:
2: [tex]\frac{1}{6}[/tex]
3 or less: [tex]\frac{1}{2}[/tex]
5 or more: [tex]\frac{1}{3}[/tex]
8: 0
~theLocoCoco
Answer:
2 = 1/6
3 or less =1/2
5 or more = 1/3
8 = 0
Step-by-step explanation:
Instead of numbers satisfies Binfords law if the probability of a number starting with digit d is p(d)=log (d+1)-log(d) The probability of a particular digit is more than 8% the graph represents the situation which values are included in the solution set
Answer:
B and E
Step-by-step explanation:
i took the test
NEED HELP ASAP WILL MARK BRANLIEST!!!!!!
Which simplified fraction is equal to 0.53?
Answer:
53/100
Step-by-step explanation:
0.53 = 53/100
Since "3" is in the hundredths place, that is going to be the denominator.
The fraction cannot be simplified any further.
Best of Luck!
Question 1 of 10
Solve the equation -5 = y for x.
