Answer:
No
Step-by-step explanation:
This is not a random sample, because Mike only surveyed newly hired police officers.
A random sample would include a mix of different, randomly chosen police officers.
This sample only includes newly hired police officers, so it is not random.
Tristan paid $8 in tax on a purchase of $200. At that rate, what would be the tax on a purchase of $150?
Answer:
$6.00
Step-by-step explanation:
8/200=4% sales tax
150X .04=$6.00
Slope of the line and y- intercept
Answer:
-3/2 is the slope
0 is the y-intercept
Step-by-step explanation:
Start at the dot to the very left since that's where it starts. Rise/Run so first start by going down to where the line meets a place where a dot can be placed. If you go down 3 and run over 2. You get to another dot that can be placed. (Place dots where the line meets a dot in the grid if that makes sense). Also if you go down another 3 and run another 2, you get to your next coordinate. The y=intercept is just basically where the line meets the y-axis so in this case, it's 0.
Hope this helps and sorry if that didn't make that much sense, Im bad at explaining things.
it's asking if the statement is true of false :).
1: x+3 and 2x are equivalent when x is 2, true or false
2: 4x and 15+x are equivalent when x is 5. true or false
3:4x and 15+x are equivalent when x is 3 true or false
4: 2b+b and 3b are equivalent for any value of x true or false
please help its for a product grade to bring my grade up
I need help again different question tho
Answer:
44u-36
Step-by-step explanation:
Apply the distributive property.
−6(−7u)−6⋅6+2u
Multiply −7 by −6.
42u−6⋅6+2u
Multiply −6 by 6.
42u−36+2u
Add 42u and 2u.
44u-36
Mrs. Dean harvested 1 pounds of green peppers,
2 pounds of yellow peppers, and 5pounds of red
peppers from her garden. Is 8 pounds, 9 pounds, or
10 pounds a more reasonable estimate for how many
pounds of peppers she harvested altogether?
PLEASE ANSWER
Answer: 8 Pounds because it doesn't have to be an estimate due to it being the actual number.
Step-by-step explanation: because it doesn't have to be an estimate due to it being the actual number.
Do you guys know how to solve with equation?
Answer:
{-8, 3/4}
Step-by-step explanation:
One by one, set the factors equal to zero and solve for v:
8 + v = 0 yields v = -8, and
4v - 3 = 0 yields 4v = 3 and v = 3/4
A 2-yard piece of cotton cloth costs $1.32. What is the price per foot?
Answer:
$0.22 per foot
Step-by-step explanation:
So for context, 1 yard is 3 feet. So 2 yards is 6 feet. With this, by dividing $1.32 by 6, you can get the price per foot:
1.32 / 6 ---> $0.22 per foot.
Write an
expression to represent the following:
The product of six and a number x.
Answer: 6(x) or 6 x 2(x)
Step-by-step explanation:
The product of 6 and a number x is equal to 6x.
Samuel pays $825 for rent and utilities each month. His lease lasts for another 4 months. He has $4,750 in his savings account and $245 in his checking account. He is renting a washer and dryer for $37.25 a month and has 7 months left on the rental contract. Samuel has 3 mountain bikes that are valued at a total of $2,090. His gym membership costs $79.95 per month, and he has 6 more payments left. Use this information to find Samuel’s net worth.
Answer:
10.38293Step-by-step explanation:
Subscribe to lance Mobsterproblem of volume that equals 9 work please
Step-by-step explanation:
l=1
b=3
h=3
l×b×h
9 is the vol
It costs $45 for 3 xylophones and 3 yo-yo's. If you purchased 5 xylophones and
6 yo-yo's, it would cost $80. Set up a system of equations and solve for the
cost of a single xylophone and a single yo-yo.
Step-by-step explanation:
xylophone : x
yo-yo : y
3x + 3y = 45 —(1)
5x + 6y = 80 —(2)
(1)*2 : 6x + 6y = 90 —(3)
(3)-(2):
6x + 6y = 90
-(5x + 6y) = 80
x =10 — (4)
Sub (4) into (1)
3(10) + 3y = 45
30 + 3y = 45
3y = 45-30
y = 15/3
y = 5
A city manager wants
to know if city residents think the recreation center should have extended hours for teenagers. Which sample is likely to
se representative of the population of city residents?
A.) Roll a number cube to select one of the first six names in a list of females in the city, then select every ninth name.
B) Spin a spinner with sections labeled 1 through 5 to select one of the first five names in a list of people living alone in the city, the
select every 4th name.
C) Spin a spinner with section labeled 1 through 5 to select one of the first five names in a list of registered voters in the city, then
select every 9th name
D) Roll a number cube to select one of the first six names in a list of the city residents, then select every 15th name.
Answer:
A is the answer
Step-by-step explanation:
The number of marbles of different colors stored in a hat is listed below:
4 red marbles
10 green marbles
7 blue marbles
Without looking in the hat, Dan takes out a marble at random. He replaces the marble and then takes out another marble from the hat. What is the probability that Dan takes out a blue marble in both draws?
2/21
1/9
1/2
2/3
Answer:
The answer would be a 1/9 chance of him picking two blue marbles in a row.
‼️20 points HURYYY‼️⚠️
Correct answers only or I won’t pass and graduate this year!!!!
(Other “answers” will be reported)
Answer:
2 days
Step-by-step explanation:
the graph?????
Scores on an IQ test are normally distributed. A sample of 25 IQ scores had standard deviation of 8. The developer of the test claims that the population standard deviation of 15. Do these data provide sufficient evidence to significance? Use =0.05α=0.05 . Test by using a confidence interval. Show step1-step3.
Answer:
Yes, the data provides sufficient evidence at 0.05 level of significance
Step-by-step explanation:
n = 25
s = 8
σ = 15
χ² = (n - 1)s² / σ²
χ² = (25 - 1)*8² / 15²
χ² = (24 * 64) / 225
χ² = 6.827
The critical value at 0.05 ; df = 25 - 1 = 24
12.4012 and 39.3641
Reject H0 if χ² < 12.4012 or if χ² > 39.3641
Since,
χ² < 12.4012 ; We reject H0 ;
The gates of an amusement park are closely monitored to determine whether the number of
people in the amusement park ever poses a safety hazard.
On a certain day, the rate at which people enter amusement park is modeled by the function
e(x) = 0.03x3 + 2, where the rate is measured in hundreds of people per hour since the gates
opened. The rate at which people leave the amusement park is modeled by the function
l(x) = 0.5x + 1, where the rate is measured in hundreds of people per hour since the gates
opened.
What does (e – l)(4) mean in this situation?
Answer:
Maybe how many people are in the park
For given situation, (e - l)(4) means, there are 92 people in the amusement park 4 hours after the gates open.
What is a function?"It is an expression that defines a relationship between one variable and another variable."
For given example,
the rate at which people enter amusement park is modeled by the function
[tex]e(x) = 0.03x^3 + 2[/tex]
where the rate is measured in hundreds of people per hour since the gates opened.
The rate at which people leave the amusement park is modeled by the function
[tex]l(x) = 0.5x + 1[/tex]
where the rate is measured in hundreds of people per hour since the gates opened.
First we find the subtraction of functions [tex](e-l)(x)[/tex].
[tex]\Rightarrow (e-l)(x)=e(x)-l(x)\\\\\Rightarrow (e-l)(x)=0.03x^3 + 2-(0.5x + 1)\\\\\Rightarrow (e-l)(x)=0.03x^3+2-0.5x-1\\\\\Rightarrow (e-l)(x)=0.03x^3-0.5x+1[/tex]
For x = 4,
[tex]\Rightarrow (e-l)(4)=0.03(4)^3-0.5(4)+1\\\\\Rightarrow \bold{(e-l)(4)=0.92}[/tex]
As, the rate is measured in hundreds of people per hour
So, (e - l)(4) means, there are 92 people in the amusement park 4 hours after the gates open.
Lean more about function here:
https://brainly.com/question/13461298
#SPJ2
Simplify.
Multiply and remove all perfect squares from inside the square roots. Assume b is positive.
Answer:
216*b^2
Step-by-step explanation:
first, remember that:
a*√b = √(a^2*b)
√a*√b = √(a*b)
[tex]b^n*b^m = b^{n + m}[/tex]
[tex](b^n)^m = b^{n*m}[/tex]
Now, our expression is:
[tex]2*\sqrt{8*b^3} *9*\sqrt{18*b} = (2*9)*\sqrt{8*b^3}*\sqrt{18*b}[/tex]
Where in the right I rewrite the expression so it is easier to work.
Now we can use the second property of the above ones, to have:
[tex]18*\sqrt{8*b^3*18*b} = 18*\sqrt{(8*18)*b^{3 + 1}} = 18*\sqrt{144*b^4}[/tex]
And we know that:
[tex]\sqrt{x} = x^{1/2}[/tex]
Then:
[tex]18*\sqrt{144*b^4} = 18*(144*b^4)^{1/2} = 18*\sqrt{144}*(b^4)^{1/2}[/tex]
and 12*12 = 144, then:
[tex]18*\sqrt{144}*b^{4*1/2} = 18*12*b^2 = 216*b^2[/tex]
pppppllls help I need help
Answer: This is basic trig man, So I can help you here. First thing you need is a calculator that can do sin cos and tan, ti-84 would work best. You need to use the sin cos and tan formulas to find the edge lengths of the side. heres a helppful tip to remeber the proper way to use the formulas. SOH-CAH-TOA or sin(angle measure)= Opposite side to that angle measure divided by the hypotenuse cos(angle measure)= adjacent side (the side next to the angle) divided by the hypotenuse. and TOA or Tan(angle measure)=Opposite divided by adjacent.
Step-by-step explanation: This is a mix of Special right triangles and trig. You now know how to do the trig, look up special right triangles 60 30 90 and 90 45 45, it should show you how to do the rest of the math, since I don't recall the formulas for this off the top of my head. I am not just giving you the answers for two reasons, 1 it would take tooo long and I am already doing a quiz, which I have five minutes left to complete, and B If you cant do this for yourself you will fail the final for your course.
You pick a card at random. 4 5 6 What is P(4)? Simplify your answer and write it as a fraction or whole number.
Answer:
4/p
Step-by-step explanation:
4/p=4overp
Evaluate the expression for a = 10 and b = 12.
a+4(b−3)
Answer:
46
Step-by-step explanation:
a + 4(b - 3)
Substitute the values for a and b.
10 + 4(12 - 3)
Subtract inside the parenthesis.
10 + 4(9)
Multiply.
10 + 36
Add.
46
it is multiple choice and i know 100% that the answer is no, but i dont know the answer for the solution part
Answer:
NO
NO SOLUTION
Step-by-step explanation:
2t + 2e = 11 eqn 1
t + e = 6.5 eqn 2
this can be solved using simultaneous equation
Multiply eqn 2 by 2
2t + 2e = 13
subtract eqn 1 from2
0 + 0 = 2
there is no solution
use the table to write a proportion
Answer:
n = 17
[tex]\frac{n}{85}= \frac{34}{170}[/tex]
Step-by-step explanation:
[tex]\frac{n}{85}= \frac{34}{170}[/tex]
n · 170 = 34 · 85
170y = 2890
170y ÷ 170 = 2890 ÷ 170
y = 17
Help me ASAP!!
Find the area of the whole blue triangle.
8.5 m
10 m
8 m
3 m
6 m
Which of the following is equivalent to the
given expression? *
(1 + sin a/1 - sin a) - (1 – sin a/1 + sin a)
Answer:
Solution given:
[tex] \frac{1 + \sin( \alpha ) }{1 - \sin( \alpha ) } - \frac{1 - \sin( \alpha ) }{1 + \sin( \alpha ) } [/tex]
[tex] \frac{(1 + \sin( \alpha )) {}^{2} - (1 - \sin( \alpha ) {}^{2} }{1 - \sin{}^{2} \alpha }[/tex]
[tex] \frac{1 + 2 \sin( \alpha ) + \sin {}^{2} ( \alpha ) - 1 + 2 \sin( \alpha ) - \sin {}^{2} ( \alpha ) }{ { \cos }^{2} \alpha } [/tex]
[tex] \frac{4 \sin( \alpha ) }{ \cos {}^{2}( \alpha ) } [/tex]
[tex]4 \tan( \alpha ) \sec( \alpha ) [/tex]
is your answer.
6 grade math help me pls
Answer:
Median
Step-by-step explanation:
It is symmetric so you have a much easier way to find the middle numbers.
This is for the little kids what is the answer for 200-500
Answer:
-300
Step-by-step explanation:
Jessica purchased 30 dolls and play trucks for the play school. Each doll costs $5 and each playtruck costs $10. How many dolls
and play trucks did she buy for $200?
Answer:
16 dolls and 12 trucks
Step-by-step explanation:
simple math
Select all of the expressions that are equivalent
to 18x+6.
Answer:
6(3x+1)
To check
6×3x=18x
6×1=+6
Answer:
1st, 2nd, 5th
Step-by-step explanation:
Please give me BRAINLIEST and THANKS lol
I need
41
50
of fuel in %
Answer:
82%
Step-by-step explanation:
solve - 2 1/3 - ( - 5) =
Help me please
Answer:
7.33
Step-by-step explanation: