Answer:
your sample in statistics has to represent or be pulled from the population you are interested in. If your population was all the drivers on highway 10 it wouldn't make sense to draw a sample from the local grocery store. The sample has to be pulled from the population
Step-by-step explanation:
Start at (0, 7). Move 3 units north and 1 unit east.
What is the ordered pair of the final point? HELP PLS!!!
Answer:
(1,10)
Step-by-step explanation:
Cause if you move up 3 that's 10 then move east which is to the right so 1 plus 0, which is 1 so (1,10)
What is the equation of a vertical line that passes through the point (3, -5)?
X = 3
X=-3
X= -5
X= 5
Answer: A. X = 3
Step-by-step explanation:
Since the line passes through the point (3, -5), this pair of coordinates must satisfy the equation of the line.
Glancing through the answer choices, the only one that works is option A since the X coordinate of 3 satisfies the equation of X = 3.
hope this helps :)
Someone pls???????????????
Answer:10 square units
Step-by-step explanation:
To find the area use the formula: l*h or count the amount of squares in the rectangle
what is the perimeter of this tile
Answer:
This tile is a sqaure
so , The perimeter of the sqaure is 4× side
so 4 × 3 = 12 in.
therefore , 12 in. is the perimeter of this tile
Answer:
12 inches
Explanation:
You have to add up all of the sides that are parallel to each other. So, 3+3+3+3=12, or 3x4=12, 4= the number of sides in a square.
PLS HELP i dont understand this
True or false?
The points (4, 5) and (4, -1) are symmetric over the x-axis
(will give brainliest)
Answer:
True, now give me braniest
Step-by-step explanation:
Find the length of BC. Round your answer to two decimal places.
[tex]\\ \rm\Rrightarrow cos40=\dfrac{Base}{Hypotenuse}[/tex]
[tex]\\ \rm\Rrightarrow cos40=\dfrac{a}{10}[/tex]
[tex]\\ \rm\Rrightarrow 0.766=a/10[/tex]
[tex]\\ \rm\Rrightarrow a=0.766(10)[/tex]
[tex]\\ \rm\Rrightarrow a=76.6[/tex]
Answer:
7.66 (dp)
Step-by-step explanation:
Use the cosine trig ratio:
[tex]\mathsf{\cos(\theta)=\dfrac{A}{H}}[/tex]
where:
[tex]\theta[/tex] is the angleA is the side adjacent the angleH is the hypotenuseGiven:
[tex]\theta[/tex] = 40°A = aH = 10 inSubstituting the given values into the equation:
[tex]\implies \mathsf{\cos(40)=\dfrac{a}{10}}[/tex]
[tex]\implies \mathsf{a=10\cos(40)}[/tex]
[tex]\implies \mathsf{a=7.660444431...}[/tex]
[tex]\implies \mathsf{a=7.66 \ (2 \ dp)}[/tex]
Y=-16t^2+8t
the function represents the height y (in feet) of a grasshopper jumping straight up from the ground t seconds after the start of the jump.
After how many seconds is the grasshopper 1 foot off the ground
The grasshopper is 1 foot off the ground after ___ seconds
Answer:
1/4th of a second, or .25 seconds
Step-by-step explanation:
graphed it.
The grasshopper is 1 foot off the ground after 0.25 seconds.
What is Function?A function is a relation from a set A to a set B where the elements in set A only maps to one and only one image in set B. No elements in set A has more than one image in set B.
The given function is,
f(t) = -16t² + 8t
This represents the height y (in feet) of a grasshopper jumping straight up from the ground t seconds after the start of the jump.
We have to calculate the time t when f(t) = 1 foot.
-16t² + 8t = 1
-16t² + 8t - 1 = 0
This is a quadratic equation.
Solve using quadratic formula.
Discriminant = [tex]\sqrt{8^2-(4*-16*-1)}[/tex] = 0
t = (-8 ± 0) / (2 × -16) = -8/-32 = 0.25
Hence the time is 0.25 seconds when the grasshopper is at 1 foot.
Hence the grasshopper will be at 1 foot from the ground in 0.25 seconds.
Learn more about Quadratic Functions here :
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3. In the diagram shown, midpoints F and G are located with segments CG and DF intersecting at H. If CH =10 then which of the following is the length of CG? с (1) 10 (3) 15 H F (2) 12 (4) 20 E
The midpoint given illustrates that the length of the segment CG will be C. 15.
What is a midpoint?It should be noted that in geometry, the midpoint simply means the middle point of a line segment.
In this case, from the diagram given, midpoints F and G are located with segments CG and DF intersecting at H and CH =10.
Therefore, the length of CG will be:
= 10 + (1/2 × 10)
= 10 + 5
= 15
In conclusion, the length of CG is 15.
Learn more about midpoint on:
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Need help real quick
It is choice (D)
Let's set that unknown number to x.
The first step is the difference of 3 times a number and 15 --> 3x - 15
That is no less than the square of the number '[tex]\geq[/tex] [tex]x^{2}[/tex]'
Now combine them [tex]3x - 15 \geq x^2[/tex]
Hope that helped!
A computer company claims that the lifespan of its batteries is 2. 7 years. The population standard deviation is 0. 85 years. A sample of 25 batteries was tested, and their mean lifespan was 3. 1 years. Using a 95% confidence level, determine if the company's claim is correct. Reject the null hypothesis. There is enough evidence to oppose the company's claim. Fail to reject the null hypothesis. There is enough evidence to oppose the company's claim. Reject the null hypothesis. There is not enough evidence to oppose the company's claim. Fail to reject the null hypothesis. There is not enough evidence to oppose the company's claim
Using the z-distribution, as we have the standard deviation for the population, it is found that the correct decision is given by:
Reject the null hypothesis. There is enough evidence to oppose the company's claim.
What are the hypothesis tested?At the null hypothesis, it is tested if the mean is of 2.7 years, that is:
[tex]H_0: \mu = 2.7[/tex]
At the alternative hypothesis, it is tested if the mean is different of 2.7 years, hence:
[tex]H_1: \mu \neq 2.7[/tex]
What is the test statistic?The test statistic is given by:
[tex]z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
The parameters are:
[tex]\overline{x}[/tex] is the sample mean.[tex]\mu[/tex] is the value tested at the null hypothesis.[tex]\sigma[/tex] is the standard deviation of the sample.n is the sample size.In this problem, the values of the parameters are given by:
[tex]\overline{x} = 3.1, \mu = 2.7, \sigma = 0.85, n = 25[/tex]
Hence, the value of the test statistic is given by:
[tex]z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{3.1 - 2.7}{\frac{0.85}{\sqrt{25}}}[/tex]
[tex]z = 2.35[/tex]
What is the decision?Considering a two-tailed test, as we are testing if the mean is different of a value, with a significance level of 0.05, the critical value is of [tex]|z^{\ast}| = 1.96[/tex].
Since the absolute value of the test statistic is greater than the critical value, the correct decision is:
Reject the null hypothesis. There is enough evidence to oppose the company's claim.
More can be learned about the z-distribution at https://brainly.com/question/16313918
Answer:
Reject the null hypothesis. There is enough evidence to oppose the company's claim.
Step-by-step explanation:
The test statistic needs to fall within the rejection regions that are above and below the critical z-score associated with a 5% level of significance in order to reject the null hypothesis. Otherwise, we will fail to reject the null hypothesis.
Grapes cost $2.59 per pound. James buys a bag of grapes that weighs 4.73 pounds.
How much does the bag of grapes cost?
2.59 * 4.73 = cost of grapes
2.59 * 4.73 = 12.2507
$12.25 for that bag
Which geometric series diverges? Three-fifths three-tenths three-twentieths StartFraction 3 Over 40 EndFraction ellipsis Negative 10 4 minus eight-fifths StartFraction 16 Over 25 EndFraction minus ellipsis Sigma-Summation Underscript n = 1 Overscript infinity EndScripts two-thirds (negative 4) Superscript n minus 1 Sigma-Summation Underscript n = 1 Overscript infinity EndScripts (negative 12) (one-fifth) Superscript n minus 1.
The geometric series which diverges is shown in the option number c as the absolute value of the common ratio of this series 4.
[tex]\sum_{n=1 }^{\infty} \dfrac{2}{3}(-4)^{n-1}[/tex]
What is geometric series diverges?Geometric sequence is the sequence in which the next term is obtained by multiplying the previous term with the same number for the whole series.
It can be given as,
[tex]a+ar+ ar^2+ ar^3+...[/tex]
Here,
is the (a) first term of the sequence, and (r) is the common ratio.
To be a series as geometric series diverges, it should follow,
[tex]|r| > 1[/tex]
First option given as,
3/5+3/10+3/20+3/40+ ...
Here, the common ratio is,
[tex]r=\dfrac{\dfrac{3}{10}}{\dfrac{3}{5}}\\r=\dfrac{1}{2}[/tex]
The common ratio is less than one. Thus option a is not correct.
First option given as,
-10+4-8/4+18/25- ...
Here, the common ratio is,
[tex]r=\dfrac{4}{-10}\\r=\dfrac{-2}{5}[/tex]
For the option number two the common ratio is (-2/5) which is less than 1. This option is also not correct.
In the option number c, the value of common ratio is -4. The absolute value of common ratio is,
[tex]|r|=|-4|\\|r|=4[/tex]
The absolute value of this common ratio is more than one. Thus, this is the correct option.
The geometric series which diverges is shown in the option number c as the absolute value of the common ratio of this series 4.
[tex]\sum_{n=1 }^{\infty} \dfrac{2}{3}(-4)^{n-1}[/tex]
Learn more about the geometric sequence here;
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Answer:
its C
Step-by-step explanation:
What is an unsecured line of credit?
An Unsecured Line of Credit is a variable rate credit product that allows you access to funds as you need them. As you repay your outstanding balance, the amount of available credit is replenished and made available for future use. Qualifying is simple.1 You do not need to use your home or other personal assets as collateral. An Unsecured Line of Credit provides peace of mind because you’ll always have immediate access to funds as needed.
Answer:A-
A line of credit which does not require collateral
Step-by-step explanation:
Solve this system of equations using the substitution method.
Solve for X and Y
y = -2x
-4x - 20 = y
ty
Step-by-step explanation:
-4x - 20 = -2x
2x = -20
x = -10
y = -2x
y = -2(-10)
y = 20
Slope Intercept: y= -6x - 3/2
what is the standard form?
Answer:
12x+2y=-3
Step-by-step explanation:
y=-6x-3/2
-6x-y=3/2
2(-6x-y)=2(3/2)
-12x-2y=6/2
-12x-2y=3
12x+2y=-3
Gary exercises 1. 75 hours on Mondays, Wednesdays, and Saturdays. How many weeks will it take Gary to exercise a total of 21 hours? What equation models the problem? How many weeks will it take Gary to exercise a total of 21 hours?.
Gary will take to exercise a total of 21 hours in 4 weeks. And the equation will be 5.25x = 21.
What is the linear system?A Linear system is a system in which the degree of the variable in the equation is one. It may contain one, two, or more than two variables.
Gary exercises 1.75 hours on Mondays, Wednesdays, and Saturdays.
So in a week, Gary exercises 5.25 hours.
She will take time to exercise 21 hours will be
Let she will take x week, then the equation will be
5.25x = 21
x = 4
More about the linear system link is given below.
https://brainly.com/question/20379472
Find the area of the shaded region if 9x2 - 6 is the area of the total
region and x2 + 2 is the area of the unshaded region.
Answer:
8
Step-by-step explanation:
total area. 9*2-6=12
unshaded area. 2+2=4
shaded area. 12-4
If n is at least 6, which inequality best represents the values of n?
n ≥ 6
n > 6
n < 6
n ≤ 6
I am in middle school I just clicked the wrong button.
Answer:
It is n≥6 because it says “if n is atleast 6.”
Step-by-step explanation:
hope this helped
consider the set{-4,-2,0,2}, find the set of ordered pairs determined by the relation less than or equal to
this might be the last question
Answer:
m = -1/2, y-intercept = -3, x-intercept = -6,0
Step-by-step explanation:
M is the gradient (or slope) and is always in front of the x coefficient. -1/2 in this case.
To find the y-intercept, we have to know that it is at the point where the graph passes through the y-axis. At this point x = 0. So just substitute 0 for x and solve for y to give -3.
To find the x-intercept, do the opposite. When the graph passes through the x-axis, y = 0. So when y = 0, x = -6
A bat flies 180 feet in 20 seconds. At this rate, how far can it fly in 30 seconds?
Answer:
270
Step-by-step explanation:
To solve this, we use the unitary method.
Distance flown in 20 sec = 180
Distance flown in one sec = [tex]\frac{180}{20}[/tex] = 9
Thus, distance flow in 30 secs = 9 × 30 = 270
I think this is the answer. Hope its correct :)
Have a great day!
Pip, David and Bridget share £60 in a ratio 1:2:2. How much money does each person get?
Pip:
£
David:
£
Bridget:
£
Answer:
[tex]1 + 2 + 2 = 5[/tex]
1÷5×60=12
1÷2×60= 24
1÷2×60=24
12+24+24=60
Step-by-step explanation:
add the ratio
Determine whether each expression can be used to find 2. Select Yes or No.
x=12 cos 36
x=12/cos 36
x=12 sin 54
x= 12/sin54
Answer:
If you have the hypotenuse, multiply it by sin(θ) to get the length of the side opposite to the angle. Alternatively, multiply the hypotenuse by cos(θ) to get the side adjacent to the angle. If you have the non-hypotenuse side adjacent to the angle, divide it by cos(θ) to get the length of the hypotenuse.
Step-by-step explanation:
Use the information below to find the area of the other triangle
Answer:
130.68 mm²
Step-by-step explanation:
given 2 similar figures with ratio of sides = a : b , then
ratio of areas = a² : b²
here ratio of sides = 5 : 11 , then
ratio of areas = 5² : 11² = 25 : 121
let x be the area of Δ YPR , then by proportion
[tex]\frac{25}{27}[/tex] = [tex]\frac{121}{x}[/tex] ( cross- multiply )
25x = 3267 ( divide both sides by 25 )
x = 130.68
area of Δ YPR ≈ 130.68 mm²
factor out 4x(2x+3)-7(2x+3)
Answer:
If it wants you simplify the answer 6x + 21
Step-by-step explanation:
4x times 2x = 8x. Then 4x times 3 = 12x
Then 8x + 12x = 20x
-7 times 2x = -14x. Then -7 times -3 = 21
20x - 14x = 6x + 21
I hope that helped! :)
Giving brainiest for anyone that answers in the next 10 minutes so please answer
if you dont understand here is a photo
Match each value to what it represents.
3^4 = 81
1. 81 ? base
2. 4 ? exponant
3. 3 ? power
1. Kelsey got a 74% on her Social Studies test. The test had 50 questions. How many
questions did she NOT answer correctly?
A) 12
B) 50
C) 13
D) 37
Explain how you got the answer too.
Answer:
Step-by-step explanation:
Formula: Scored Marks/Out of Marks × 100 = result %
( 37 ÷ 50 ) x 100 = 74%
Hope this Helps!!!!
Answer:
the answer is C)13
Step-by-step explanation
50x2=100. 74% of 100 is 74 which leaves 26. 26/2 is 13
You leave an 22% tip on a $54 bill. How much did you pay?
Answer:
You will pay $65.88 in total
Step-by-step explanation:
Bill amount: $54
Tip: 22% = $54 * 0.22 = $11.88
Sum up: $54 + $11.88 = $65.88
I need help with a question
Answer:
[tex]5x^2+9x+3[/tex]
Step-by-step explanation:
We just need to add like terms together
[tex]11x^2-6x^2=5x^2[/tex]
[tex]5x+4x=9x[/tex]
[tex]8-5=3[/tex]
can anyone solve this
Answer:
C.
Step-by-step explanation:
You can get the area of each square by taking 8*6 = 48. There are 2 of them so that would so far equal 96.
To get the triangles, we can subtract 15-8 to get 7, which is the base of 1 triangle. 7*6/2 to get the area of one triangle is 21. Since there are 4 triangles 21*4 = 84
The area of the hexagon is 180ft^2.
If it's asking for one of the trapezoid it is 90ft^2
I hope this helped <3