Answer:
250
Step-by-step explanation:
Density = mass / volume
density = 0.5 g / mL
mass = 125 g
0.5 = 125 / V Multiply both sides by V
0.5 * V = 125 Divide by 0.5
0.5V 0.5 = 125/0.5
V = 250
When doing these kinds of ratios make sure that you get the numbers all on one side before you actually do the division or multiplication. That way you won't get confused.
Mr watson rives 82 miles round trip each day how many miles does mr waton travel in 23 dys?
Answer:
1886 miles
Step-by-step explanation:
82 x 23 is 1886, 82 miles each day times 23 days.
The average daily volume of a computer stock in 2011 was μ=35.1 million shares, according to a reliable source. A stock analyst believes that the stock volume in 2018 is different from the 2011 level. Based on a random sample of 40 trading days in 2018, he finds the sample mean to be 31.8 million shares, with a standard deviation of s=14.6 million shares. Test the hypotheses by constructing a 95% confidence interval.
(a) State the hypotheses for the test.
(b) Determine if the researcher will reject the null hypothesis.
Answer:
The 95% confidence interval is ( 27.126 , 34.674)
Step-by-step explanation:
Given
The t critical value at 0.05 level = 2.023 for the df = 39
Confidence interval = 95%
Mean
[tex]\bar{x} - t * \frac{s}{\sqrt{n} } < \mu < \bar{x} + t * \frac{s}{\sqrt{n} }[/tex]
Substituting the given values we get -
[tex]\30.9 - 2.023 * \frac{11.8}{\sqrt{40} } < \mu < \30.9 + 2.023 * \frac{11.8}{\sqrt{40} }\\27.126 < \mu < 34.674[/tex]
Hence, the 95% confidence interval is
( 27.126 , 34.674)
Given a total-revenue function R(x) = 700/x? - 0.2x and a total-cost function 1 3 C(x) = 1400(x² + 2) +600, both in thousands of dollars, find the rate at which total profit is changing when x items have been produced and sold. P'(x) =
Answer:
Step-by-step explanation:
abcdefghijklmnopqrstuvwxyz
can someone help me plzzz fastt
Answer:
3) 7square+11square=xsquare
49+121=x square
170=x square
x=13.038
5)9square+40square=x square
81+1600=x square
1681=x square
x=41
6)4square+6square=x square
16+36=x square
x square=52
x=7.211
i do not answer the fourth question.sorry if i can i will try
10x-3(x-6)=x+30 please help me
Step-by-step explanation:
10x-3(x-6)=x+30
10x-3x+18=x+30
7x+18=x+30
6x=12
x=2
Answer:
x=2
Step-by-step explanation:
10x-3(x-6)=x+30
Distribute
10x -3x+18 = x+30
Combine like terms
7x +18 = x+30
Subtract x from each side
7x-x +18 = x+30-x
6x +18 = 30
Subtract 18
6x+18-18 = 30-18
6x = 12
Divide by 6
6x/6 = 12/6
x=2
1. Round 0.007492 to the nearest hundredth.
Answer:
The answer is 0.01
Step-by-step explanation:
so in order to round it you have to know after the decimal it goes: tenths, hundreds, thousands (0 tenths, 0 hundreds, 0 thousands)
So 0.007492, take the first 3 numbers after the decimal, 0.007, since it will be in the hundreds place, lets see if we can round the 0 up. If the number behind 0 is greater then or equal to 5 round up, if the number is less then 5 then it stays the same. Since 7>5 it rounds up, so the 0 becomes 1. So your new number will be 0.01
Hoped this helped :D
By rounding 0.007492 to the nearest hundredth, we get 0.01.
What is the method of rounding a number?The number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up.
Example: 0.3879 rounded to the nearest hundredth is 0.39.
If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down.
Example: 0.3823 rounded to the nearest hundredth is 0.38.
Given number is 0.007492.
Rounding to nearest hundredth, we get:
0.00749 ⇒ 0.01.
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I need help with this question. I have a few correct and need help with the ones that are not.
Step-by-step explanation:
For the first one, you have the -2 step right, but now we're at
f(x) -2 = x³
We have to take the cube root of each side to solve for x, which looks like
∛(f(x)-2) = x or (f(x)-2)^(1/3) = x. This makes our inverse function ∛(x-2) Putting a 3 to the side multiplies the value by 3, and doesn't cube root it.
For your next incorrect answer, you simply need to plug the inverse function that I just gave in.
For the one after that, the question is asking to plug in f(x). We know that our inverse is ∛(x-2) , and the question is asking to plug f(x) in for x here. Thus, in the box, simply put down x³+2
For the last incorrect answer, we need to find the cube root of something, and by plugging in f(x) into the previous one, we are left with ∛(x³+2-2). Therefore, in the box, simply put down x³ as that is what's left
please solve in the next 10 minutes pleaseeee
Answer:
43.82 mph
266.67 feet
Step-by-step explanation:
Given :
S = √30fl
S = speed of car
f = drag Coefficient
l = Length of skid mark
If f = 0.8 ; l = 80 feets
s = √30fl
s = √(30*0.8*80)
s = √1920
s = 43.817
s = 43.82 mph
B.)
s = 80 mph
f = 0.8
s = √30fl
80 = √30*0.8*l
80 = √24l
Square both sides
80² = 24l
6400 = 24l
l = 6400/24
l = 266.67 feets
A sequence is defined by the recursive function f(n + 1) = f(n). It f(3) = 9, what is f{1) ?
Answer:
because f(n) = f(n + 1)
=> f(3) = f(2) = f(1) = 9
Which statement is true? Q A) |13| = – 13 B) – |–13| = 13 C) |–13| = 13 D) – |13| = 13
Answer:
C
Step-by-step explanation:
The absolute value of |13| and |-13| is always 13. It never goes negative unless there is a minus sign outside the absolute value | | symbol. A is wrong
B: Not correct. Read the explanation for A. The answer to B is - 13
C: Correct. See the remark the was made about A
D: Incorrect as well. The minus is outside the absolute value symbol. The answer is - 13
Answer:
C .////.
Step-by-step explanation:
When you have /13/ its always positive even if there's a negative in there. If there was the negative symbol on the outside its a negative number :)
What is the value ofWhat is the value of the missing angle?
A
20
B
90
C
120
D
100 the missing angle? A 20 B 90 C 120 D 100
Answer:
The missing angle is 120
Step-by-step explanation:
Given
See attachment
Required
The missing angle (?)
Let the missing angle be x
So:
[tex]x + 60 = 180[/tex] --- angle on a straight line
Collect like terms
[tex]x = 180-60[/tex]
[tex]x = 120[/tex]
Question 4-6. Earth is 93 million miles from the Sun. Pluto is 4.67 billion miles from the Earth.Calculate the ratio of the distance from Pluto to Earth to the distance from Earth to the Sun. Use scientific notation to calculate the ratio and express your answer in standard notation. (round to the hundredths place)
Answer:
PE/SE = 5.02×10¹
Step-by-step explanation:
Sun-Earth (SE) = 93×10⁶ miles
Pluto-Earth (PE) = 4.67×10⁹ miles
so, PE/SE = (4.67×10⁹) / (93×10⁶) = (4.67×10³)/93 =
= 50.215053763440860215... =
= 5.02×10¹ / 1 or simply 5.02×10¹
in other words, Pluto is a little bit more than 50 times farther away from Earth, than Earth is from the Sun.
After reading the directions to paint, on the paint drum, the information
indicated two coats of paint is required when using the 5 litre paint
and one coat with the 20 litre drum. With both paints 1 litre of paint
covers 9 m2
1.3.1 There are 28 rooms to be painted. Show with calculations which
will be the cheaper paint to buy.
(1
Step-by-step explanation:
jnx-avkj-uup p.l.z join
A study attempts to examine whether watching a lot of television or playing a lot of video games will have a detrimental effect on a child's academic success at school and/or their success at sports. he experiment is conducted on the basis that the age of the child will be important in determining this effect but the gender of the child will not. Select all the elements that are FACTORS of this experiment:
a. age of the child
b. gender of the child
c. time spend reading books over a year
d. time spent playing video games over a year
e. success at sports
f. academic success at school
g. time spent watching television over a year
Answer : A,D,G
Step-by-step explanation:
A factor of experiment is the controlled independent variable.
The factor of experiments are,
d) Time spent playing video games over a yeare) Success at sportsf) Academic success at schoolg) Time spent watching television over a yearHence option d,e,f and g is the factor of experiment.
What is the factor of experiment means?A factor of experiment is the controlled independent variable.
Given information
The experiment is conducted on the basis of age.
The experiment is not conducted on the basis of gender.
In the experiment the relation between watching TV a lot or playing video game and child's academic success at school and/or their success at sports tried to obtained.
Factors of this experiment-
a) Age of the child- As in the statement it is cleared, that the age of the child is a base of the experiment but the age can not be a controlled independent variable. Thus the age of the child is the not a factor of this experiment.b) Gender of the child-As for the study for the given problem, the gender is not important. Thus the gender of the child in not a factor of this experiment.c) Time spend reading books over a year-The study is to determine the relation between watching TV a lot or playing video game and child's academic success and not about reading books. Thus the time spend reading books over a year is not a factor of this experiment.d) Time spent playing video games over a year- The study is to determine the relation between playing video game and child's academic success or success in sports. Thus, time spent playing video games over a year is a factor of this experiment.e) Success at sports-As the success at the sports is the part of the study. Thus, success at sports is a factor of this experiment.f) Academic success at school- As the academic success at the school is the part of the study. Thus, academic success at school is a factor of this experiment.g)Time spent watching television over a year-The study is to determine the relation between a lot of television watching and child's academic success or success in sports. Thus, time spent watching television over a years a factor of this experiment.Thus the factor of experiments are,
d) Time spent playing video games over a yeare) Success at sportsf) Academic success at schoolg) Time spent watching television over a yearHence option d,e,f and g is the factor of experiment.
Learn more about the factor of experiments here;
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The filling variance for boxes of cereal is designed to be .02 or less. A sample of 41 boxes of cereal shows a sample standard deviation of 0.16 ounces.
a. Use α= 0.05 to determine whether the variance in the cereal box fillings is exceeding the design specification.
b. State the null and alternative hypotheses.
c. Calculate the value of the test statistic (to 2 decimals).
d. The p-value is:_______
e. What is your conclusion?
Answer:
-
Null hypothesis H₀ : σ² ≤ 0.02
Alternative hypothesis Hₐ : σ² > 0.02
- Chi Square = 51.2
- p-value = 0.1104
- since the calculated p-value ( 0.1104 ) is greater than the level of significance ( 0.05 ).
We fail to reject null hypothesis.
- So at, 5% level of significance, there is no evidence to support that the variance in the cereal box fillings is designed to be 0.02 or less.
Step-by-step explanation:
Given the data in the question;
filling variance for boxes of cereal is designed to be .02 or less
sample size n = 41 boxes
standard deviation S = 0.16 ounces
level of significance = 0.05
Hypothesis;
Null hypothesis H₀ : σ² ≤ 0.02
Alternative hypothesis Hₐ : σ² > 0.02
{ Upper tail test }
Test statistics;
Chi Square = [ ( n-1 ) × S² ] / σ²
Chi Square = [ ( 41-1 ) × (0.16)² ] / 0.02
Chi Square = [ 40 × 0.0256 ] / 0.02
Chi Square = 1.024/ 0.02
Chi Square = 51.2
Degree of freedom df = n - 1 = 41 - 1 = 40
Chi square value at 0.05 and df of 40 = 55.7585
p-value = 0.1104
since the calculated p-value ( 0.1104 ) is greater than the level of significance ( 0.05 ).
We fail to reject null hypothesis.
So at, 5% level of significance, there is no evidence to support that the variance in the cereal box fillings is designed to be 0.02 or less.
Which rational functions have an oblique asymptote? Check all that apply.
x2 + 1
(x) =
X
o
f(x) =
4x2 - 6
x + 1
O
f(x) =
*5
f(x) =
x3 + 1
x3 +2
f(x) =
x² + 3x
Answer:
A, B, E
Step-by-step explanation:
In the list of rational functions, 1st, 2nd, 4th, and 5th are the rational functions those have an oblique asymptote.
What is a function?"A function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function."
The given rational functions are:
1. [tex]f(x) = \frac{x^{2}+1}{x}[/tex]
As the degree of numerator(2) is greater than the degree of denominator(1), This function has an oblique asymptote.
2. [tex]f(x) = \frac{4x^{2}-6}{x+1}[/tex]
As the degree of numerator(2) is greater than the degree of denominator(1), This function has an oblique asymptote.
3. [tex]f(x) = \frac{-x}{x^{2} }[/tex]
As the degree of numerator(1) is less than the degree of denominator(2), This function does not have an oblique asymptote.
4. [tex]f(x) = \frac{x^{5}}{x^{3}+1}[/tex]
As the degree of numerator(5) is greater than the degree of denominator(3), This function has an oblique asymptote.
5. [tex]f(x)= \frac{x^{3}+2}{x^{2}+3x}[/tex]
As the degree of numerator(3) is greater than the highest degree of denominator(2), This function has an oblique asymptote.
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Twice a number added to another number is –8. The difference of the two numbers is 2. Find
the numbers
Answer:
-2 and -4
Step-by-step explanation:
→ Make variable's for each number
x is the first variable and y is the second
→ Form equations
2x + y = -8
x - y = 2
→ Solve
3x = -6
→ Divide both sides by 3
x = -2
→ Resubstitute that into one of the equations
-2 - y = 2
→ Add 2 on both sides
-y = 4 therefore y = -4
can someone help please with thi I only have a 1 minute left PELASE
Answer: The Last Choice- D. 2/3 x 2/5
Step-by-step explanation:
I guessed the answer............ JK
1/3 x 1/5 = 1/15
1/3 x 2/5 = 2/15
2/3 x 1/5 = 2/15
2/3 x 2/5 = 4/15
So, the last choice is correct.
Find the Surface Area and the Volume.
Answer:
volume = 1,000
surface area = 930
Step-by-step explanation:
the volume = (½×(14+6) ×4) × 25
= 1,000 cm³
the surface area =
(2×½×(14+6) ×4) + ((14+7+7+6) ×25)
= 80+850
= 930 cm²
What are the zeros of P(m) = (m2 – 4)(m2 + 1)?
Answer:
m=4, -1
Step-by-step explanation:
if i am interpreting this correctly, you are wanting to find at what value of m would the solution be zero.
so, there are two expressions that can cause an answer of 0.
1) if 0=m2-4
so solve for m2, and you get 4=m2
2) if 0=m2+1
solve for m2, and you get -1=m2
you can check your work by plugging the values back into the equation.
P(m)=(4-4)(4+1)
=(0)(5)
=0
and
P(m)=(-1-4)(-1+1)
=(5)(0)
=0
A bill originally amounting Rs 1550, now amounts to Rs 1736 after adding VAT. Find the VAT rate.kaabil original amounting
Answer: 12%
Step-by-step explanation:
Original amount = Rs 1550
VAT = Rs 1736 - Rs 1550 = Rs 186
VAT rate = VAT/Original amount × 100
= 186/1550 × 100
= 18600/1550
= 12%
Therefore, the VAT rate is 12%.
Check:
= Rs 1550 + (12% × Rs 1550)
= Rs 1550 + $186
= Rs 1736
how many oranges and mangoes are in the basket altogether if the ratio of mangoes and oranges in the basket is 2/5if there are 40 oranges in the basket
9514 1404 393
Answer:
56
Step-by-step explanation:
We are given ...
mangoes : oranges = 2 : 5
Then the ratio we want is ...
(mangoes +oranges) : oranges = (2 +5) : 5 = 7 : 5
The total number of fruits in the basket is ...
(7/5)(40) = 56 . . . mangoes + oranges in the basket
Aldo has been given a list of 3 bands and asked to place a vote. His vote must have the names of his favorite and second favorite bands from the list. How many different votes are possible?
Answer:
6
Step-by-step explanation:
1) A B C
2) B A C
3) C A B
4) A C B
5) B C A
6) C B A
(I probably understood it incorrectly)
Help with number 16 please
Answer:
the answer is c. 300
Step-by-step explanation:
18+32×12÷2
base 1 + base 2 × height ÷ 2
Which of the following represents a function?
2 times the difference between 49.5 and 37.5
Answer:
24
Step-by-step explanation:
diff is 12
12x2 is 24
(d) An insurance company will only sell its Select policy to people for whom the probability of a stroke in the next 10 years is less than 0.01. If a smoker with a systolic blood pressure of 200 applies for a Select policy, under what condition will the company sell him the policy if it adheres to this standard
Answer: Hello your question has some missing data that I was able to find and attach below
A recent 10-year study conducted by a research team at the Great Falls Medical School was conducted to assess how age, systolic blood pressure, and smoking relate to the risk of strokes. Assume that the following data are from a portion of this study. Risk is interpreted as the probability (times 100) that the patient will have a stroke over the next 10-year period. For the smoking variable, define a dummy variable with 1 indicating a smoker and 0 indicating a nonsmoker.
answer :
The condition : Client age ≤ 31.26 years
Step-by-step explanation:
First step : perform a regression analysis via excel ( result attached below )
P-value = 2.06E-07
Next determine the condition on which the company will sell its policy
Y = - 91.7595 + 1.0767x1 + 0.2518x2 + 8.7399x3
1 < -91.7595 + 1.0767x1 + 0.2518*200 + 8.7399*1
make X1 subject of equation above
X1 < 31.26
1. Cheryl Douglas works 43 hours in a week for an exempt salary of $1,827 per week. What are Cheryl's gross weekly earnings?
Answer:
$1827
Step-by-step explanation:
Since Cheryl is said to be paid an exempt salary. Then it can be said that Cheyk does not qualify for minimum wage or overtime pay, Hence, exempt payment is in terms or salary rather than wage. Similarly. Gross earning refers the amount a worker receives as income over a certain period of time. The gross income has not been subjected to tax charges or any form of deduction. Hence, it could be said to be the outright earning paid to an employee before any deduction is made.
Hence, Cheryl's gross weekly earning is $1827 per week.
The following data relate to direct materials costs for February: Materials cost per yard: standard, $1.90; actual, $2.05 Standard yards per unit: standard, 4.65 yards; actual, 5.08 yards Units of production: 9,500 Calculate the direct materials quantity variance. a.$7,761.50 unfavorable b.$8,374.25 favorable c.$8,374.25 unfavorable d.$7,761.50 favorable
Answer:
The correct answer is "7,239".
Step-by-step explanation:
Given values:
Standard price,
SP = $1.90
Actual quantity purchased,
AQP = [tex]5.08\times 9500[/tex]
= [tex]48,260 \ Yards[/tex]
Actual price,
AP = $2.05
Now,
The material price variance will be:
= [tex](AQP\times AP)-(AQP\times SP)[/tex]
By substituting the values, we get
= [tex](48260\times 2.05)-(48260\times 1.90)[/tex]
= [tex]98933-91694[/tex]
= [tex]7,239[/tex]
Solve for x.Round to the nearest tenth of a degree, if necessary. MKL,14,7.4
Answer:
m(∠LMK) = 27.9°
Step-by-step explanation:
We have to calculate the measure of angle LMK.
Measure of opposite side (KL) = 7.4
Measure of adjacent side (ML) = 14
By applying tangent rule in the given triangle,
tan(∠LMK) = [tex]\frac{\text{Opposite side}}{\text{Adjacent side}}[/tex]
= [tex]\frac{KL}{ML}[/tex]
= [tex]\frac{7.4}{14}[/tex]
= 0.52857
m(∠LMK) = [tex]\text{tan}^{-1}(0.52857)[/tex]
= 27.9°