Answer:
the 1st and 3 and 2end one its the right one
Step-by-step explanation:
Answer:
its the first three answers :)
Step-by-step explanation:
Tara has a magnet collection from places she visited. She measures the length of the magnets to the nearest half inch and records the data in a line plot. Are more magnets longer than 2 1/2 inches or shorter than 2 1/2 inches? Explain
Answer:
there are more magnets that longer than 2 1/2
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one.
Please have a look at the attached photo.
My answer:
From the photo, we can see that:
Length of the magnet:
1 inch there is 1 magnet[tex]1\frac{1}{2}[/tex] inches there are 2 magnets2 inches there are 3 magnets 3 inches there are 4 magnets [tex]3\frac{1}{2}[/tex] there is 1 magnet4 inches there are 2 magnets=> the total number of magnets that longer than 2 1/2 are: 4+1+2 = 7
=> the total number of magnets that shorter than 2 1/2 are: 1+2+3 = 6
Hence, there are more magnets that longer than 2 1/2
Hope it will find you well.
Answer:
Step-by-step explanation:
If r(x) = 2 – x2 and w(x) = x – 2, what is the range of (w circle r) (x)?
(negative infinity, 0 right-bracket
(negative infinity, 2 right-bracket
Left-bracket 0, infinity)
Left-bracket 2, infinity)
Answer:
[tex](-\infty, 0)[/tex]
Step-by-step explanation:
(w circle r) (x) is the composite function(w of r(x)), that is, w(r(x))[/tex]
We have that:
[tex]r(x) = 2 - x^{2}[/tex]
[tex]w(x) = x - 2[/tex]
Composite function:
[tex]w(r(x)) = w(2 - x^{2}} = 2 - x^{2} - 2 = -x^{2}[/tex]
[tex]-x^{2}[/tex] is a negative parabola with vertex at the original.
So the range(the values that y assumes), is:
[tex](-\infty, 0)[/tex]
The range of (w circle r) (x) will be (-∞,0). Option A is correct.
What is a function?A connection between independent variables and the dependent variable is defined by the function.
Functions help to represent graphs and equations. A function is represented by the two variables one is dependent and another one is an independent function.
The relation between them is shown as y if dependent and x is the independent variable;
Given functions;
[tex]\rm r(x) =2- x^2 \\\\ w(x) =x-2[/tex]
The composite function is found as;
[tex]\rm w(r(x))=w(2-x^2 = 2-x^2-2)\\\\ w(r(x))= -x^2[/tex]
-x² is graphed and shows the negative parabola
The range of (w circle r) (x) will be (-∞,0).
Hence, option A is correct.
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The box plot was created by using which pieces of data?
A box-and-whisker plot. The number line goes from 0 to 130. The whiskers range from 5 to 130, and the box ranges from 10 to 105. A line divides the box at 40.
a maximum of 130 and a lower quartile of 10
a maximum of 130 and a lower quartile of 5
a maximum of 135 and a lower quartile of 10
a maximum of 135 and a lower quartile of 5
Answer:
(a) a maximum of 130 and a lower quartile of 10
Step-by-step explanation:
The whiskers of a box plot extend from the minimum to the maximum. The box ranges from the lower quartile to the upper quartile. The middle line divides the box at the median.
Your plot has ...
minimum: 5lower quartile: 10median: 40upper quartile: 105maximum: 130The maximum and lower quartile are correctly described as 130 and 10, respectively.
Answer:
A. a maximum of 130 and a lower quartile of 10
Step-by-step explanation:
What are the restrictions of the domain gºh?
Answer:
The restrictions partly depend on the type of function.
You can’t divide by 0
You can’t take the square (or other even) root of a negative number, as the result will not be a real number.
In what kind of functions would these two issues occur?
the function is a rational function and the denominator is
0
for some value or values of x,
f ( x ) = x + 1 2− x
is a rational function
the function is a radical function with an even index (such as a square root), and the radic and can be negative for some value or values of x.
f ( x ) = √ 7 − x
is a radical function
The following table gives examples of domain restrictions for several different rational functions.
Hope this helped
Answer:
The answer is 6.
Step-by-step explanation:
Find lim x -2 f(x) for: a . f(x) = 9 b. f(x) = x
Answer:
Step-by-step explanation:
Given the limit function
Lim x → 2: f(x)
1. When f(x) = 9
Then,
From limit theorem
Lim x → xo: K = K
Where k is a constant. Then, the limit of a constant is that constant.
Lim x → 2: 9 = 9
So limit is 9.
2. Lim x → 2: f(x)
Lim x → 2: x
When x = 2
Lim x → 2: 2 = 2
Then, x = 2.
Day 1: Day 2: Comparison of Day 1 and Day 2: ____ < _____ or _____ > _______ Comparison of days with absolute value: ____ < _____ or _____ > _______
Answer:
Step-by-step explanation:
Hello!
Full text:
Here are the low temperatures (in degrees Fahrenheit) for one week in Montreal, Canada:
-3.5ºF, 5ºF, 1.5ºF, -0.5ºF, -2ºF, 2.5ºF, -4ºF
Compare the weather on two different days using an inequality. Then see if their comparisons change by finding the absolute value of each.
You have to choose two days at random and compare the values of temperature registered those days and compare them, for example:
Day 1: 3rd day: 1.5ºF
Day 2: 7nth day: -4ºF
Comparison of Day 1 and Day 2:
Remember:
"<" indicates that the value from the left is less than the value from the right.
">" indicates that the value from the left is greater than the value from the right.
The temperature registered on Day 1 is 1.5ºF and the temperature registered on Day 2 is -4ºF, as you notice the second temperature is negative and therefore is less than the first temperature:
1.5ºF > -4ºF
Comparison of days with absolute value:
To compare absolute values you have to disregard the sign and consider only the number of the temperature:
|Day 1|= |1.5ºF|
|Day 2|= |4ºF|
Then the registered temperature of Day 1 is less than the registered temperature on Day 2:
|1.5ºF| < |4ºF|
I hope this helps!
Answer:
-4ºF and 1.5ºF
Step-by-step explanation:
What dose equal -7+4(-4)=?
Answer:
-23
Step-by-step explanation:
PEMDAS says to multiply first, so we multiply 4 by -4 and get -16.
Now the equation is -7 - 16. Change the subtraction sign into addition and the negative 16 into a positive, and the equation is -7 + -16.
-7 + -16 is -23.
Use what you know about domain to select all of
the following functions that could be the one
graphed.
f(x) - 3
f(x) - V1
Ax) = VX+1
(x) = 3x-3
Answer:A & B
Step-by-step explanation:
What is the radian measure of an angle of 132°?
Answer:
11/15 pi radians
Step-by-step explanation:
To convert from degrees to radians, multiply by pi/180
132 * pi/180
11/15 pi
Answer:
2.304 radians
hope this helps :)
If the smallest angle of rotation for a regular polygon is 18°, how many sides does polygon have?
10
12
20
24
Answer:
The answer is 20
Step-by-step explanation:
Given that the smallest angle of rotation for a regular hexagon is 18°. We are to find the number of sides of the polygon. Since the polygon is regular, so all its sides and angles are equal.
Answer:
its 20
Step-by-step explanation:
got it right on my test
A train leaves at 11.15 and arrives at its destination at 12.23. If the train travelled 95 km, what was it's average speed in km/h? Give your answer rounded to 1 dp.
Answer:
Average speed v = 83.8 km/h
Step-by-step explanation:
Given;
Distance travelled = 95 km
Time taken t = 12.23 - 11.15 = 1 hour 8 minutes
t = 1 + 8/60 hours = 1.133 hours.
Average speed v = distance travelled/time taken
substituting the values;
v = 95 km ÷ 1.133 hours
Average speed v = 83.8 km/h
A rectangle has a length of 7.5 inches and a width of 3 inches. This rectangle is dilated by a scale factor of 2.2 to create a new rectangle. What are the dimension of the new rectangle? Length and Width
Answer:
For this case is the rectangle is dilated a factor of 2.2 we assume that the expansion is in all the dimensions so then the new length and width are:
[tex] L_f = 2.2 L_i= 2.2* 7.5 in = 16.5 in[/tex]
[tex] W_f = 2.2 w_i = 2.2 * 3 in = 6.6 in[/tex]
Step-by-step explanation:
The area of a rectangle is given by [tex] A = L *W[/tex]
For this case is the rectangle is dilated a factor of 2.2 we assume that the expansion is in all the dimensions so then the new length and width are:
[tex] L_f = 2.2 L_i= 2.2* 7.5 in = 16.5 in[/tex]
[tex] W_f = 2.2 w_i = 2.2 * 3 in = 6.6 in[/tex]
And the area would be (2.2)^2 times the initial area since is defined as [tex]A = L_f W_f [/tex]
Answer:
The length and the width of the new rectangle are 16.5 inches and 6.6 inches respectively
Step-by-step explanation:
Given
Shape: Rectangle
[tex]Length = 7.5 inches[/tex]
[tex]Width = 3 inches[/tex]
[tex]Scale factor = 2.2[/tex]
Required
Dimension of the new rectangle
The dimensions of the new rectangle can be solved by multiplying the scale factor by the old dimensions;
This means that
New Length = Scale factor * Old Length
and
New Width = Scale factor * Old Width
Calculating the new length
New Length = Scale factor * Old Length
Substitute 2.2 for scale factor and 7.5 for old length; This gives
[tex]New Length = 2.2 * 7.5 inches[/tex]
[tex]New Length = 16.5 inches[/tex]
Calculating the new width
New Width = Scale factor * Old Width
Substitute 2.2 for scale factor and 3 for old width; This gives
[tex]New Width = 2.2 * 3 inches[/tex]
[tex]New Width= 6.6 inches[/tex]
Hence, the length and the width of the new rectangle are 16.5 inches and 6.6 inches respectively
Francesca has already knit 28 centimeters of scarf, and can knit 7 centimeters each night. How many nights will Francesca have to spend knitting in order to knit a total of 42 centimeters of scarf?
Answer:
2 nights
Step-by-step explanation:
We need to find how many nights Francesca will have to spend to knit the rest of the scarf.
First, we have to find how much she has left to knit, and then find how many nights it will take her.
She has already knit 28 centimeters of scarf.
She wants to knit a total of 42 centimeters of scarf.
Therefore, the length of scarf left to knit is:
42 - 28 = 14 centimeters
She can knit 7 centimeters each night.
Therefore, the number of nights more she needs to knit 14 centimeters is:
14 / 7 = 2 nights
She will spend 2 nights to knit a total of 42 centimeters of scarf.
The equation h(t)= -16t^2+864t models the path of a rocket shot into the air. After how many seconds does the rocket hit the ground?
Answer:
t = 54 seconds
Step-by-step explanation:
The equation that models the path of a rocket into the air is given by :
[tex]h(t)= -16t^2+864t[/tex]
It is required to find the time after which the rocket will hit the ground. When it hits the ground, the height of the rocket will becomes zero. It means,
h(t) = 0
i.e.
[tex]-16t^2+864t=0\\\\16t(-t+54)=0\\\\16t=0, -t+54=0\\\\t=0\ and\ t=54\ s[/tex]
It means after 54 seconds, the rocket will hit the ground.
Aubrey is selling collection of art and makes a 12% commission on all sales. What would her commission be on the sales of a $ 3250 collection of art?
Answer:
$390
Step-by-step explanation:
3250 x 0.12 = 390
Answer:
The answer is $390
Please help me I have been stuck on this question for ages
Answer:28 green and 35 red
Step-by-step explanation:
Given
If there are r red counter and g green counter then
Probability of drawing a green counter is [tex]P(g)=\frac{4}{9}[/tex]
and [tex]P(g)=\frac{\text{No of g counter}}{\text{Total no of counter}}[/tex]
Thus [tex]\frac{\text{No of g counter}}{\text{Total no of counter}}=\frac{4}{9}[/tex]
[tex]\frac{g}{g+r}=\frac{4}{9}[/tex]
[tex]\Rightarrow 9g=4g+4r[/tex]
[tex]\Rightarrow 5g=4r\quad \ldots(i)[/tex]
Also if 4 red and 2 green counter is added the probability of drawing a green counter is
[tex]P(g)=\frac{10}{23}=\frac{\text{No of g counter}}{\text{Total no of counter}}[/tex]
[tex]\Rightarrow \frac{10}{23}=\frac{g+2}{g+2+r+4}[/tex]
[tex]\Rightarrow \frac{10}{23}=\frac{g+2}{g+r+6}[/tex]
[tex]\Rightarrow 10g+10r+60=23g+46[/tex]
[tex]\Rightarrow 10r+14=13g\ quad \ldots(ii)[/tex]
Substitute the value of g in equation (ii)[/tex]
[tex]\Rightarrow 10\times \frac{5}{4}g+14=13g[/tex]
[tex]\Rightarrow \frac{25}{2}g+14=13g[/tex]
[tex]\Rightarrow g=28[/tex]
Therefore [tex]r=35[/tex]
Thus there 28 green counter and 35 red counter
A grain silo is 56% full. At the end of the week, it is 3/4 full. What percent of the silo was filled that week?
Answer:
75 percent
Step-by-step explanation:
3/4 = 75%
75 - 56 = 19%
19%Bill plans to save for a pair of headphones that are $89.00. The sales tax rate is 8%. How much will Bill need to save? i'll give you brainliest and five star
Answer:
96.12
Step-by-step explanation:
89x.0.08 is 7.12 add that to 89 gives you 96.12
4/9 times 9/3 can someone please answer this question
Answer:
36/27
Step-by-step explanation:
simplified is 4/3
Each half of the drawbridge is about 284 feet long. How high does the drawbridge rise when x is 30?? The drawbridge rises about feet. Question 2 How high does the drawbridge rise when x is 45?? Round the answer to the nearest hundredth. The drawbridge rises about feet. Question 3 How high does the drawbridge rise when x is 60? ? Round the answer to the nearest hundredth. The drawbridge rises about feet.
Answer:
height = 142.00 ft
height ≈ 200. 82 ft
height ≈ 245.95 ft
Step-by-step explanation:
The picture below represent the image of the draw bridge. The illustration will form a right angle triangle. The hypotenuse is each half of the drawbridge which is 284 ft long. The opposite side of the triangle is facing the drawbridge half leg and the adjacent side is horizontal length. This is the side that made the angle with the drawbridge half leg(hypotenuse).
The question ask us to find the height of the drawbridge when it rise which is the opposite sides of the triangle when the angle is 30° , 45° and 60°.
Using SOHCAHTOA principle,
Angle 30°
sin 30° = opposite/hypotenuse
sin 30° = height/284
cross multiply
height = 0.5 × 284
height = 142.00 ft
Angle 45°
sin 45° = height/284
height = 284 × 0.70710678118
height = 200.818325857
height ≈ 200. 82 ft
Angle 60°
sin 60 = height/284
cross multiply
height = 0.86602540378 × 284
height = 245.951214675
height ≈ 245.95 ft
The question asks about the height a drawbridge rises at different angles. This is a trigonometry problem that can be solved by using the sine of the angle to calculate the height of the bridge when raised. The height corresponds to the 'opposite' side in a right triangle formed by the raised drawbridge.
Explanation:This question appears to be asking about how high a drawbridge rises based on an angle, x, which is a trigonometry problem. Assuming that the drawbridge forms a right triangle when it rises, the height can be calculated using the sine of the angle, x. Sine of x is equal to the opposite side (height of the bridge when it is raised) over the hypotenuse (half of the drawbridge's length).
Applying these trigonometric principles, calculations for each scenario would look like the following:
For x = 30 degrees: Height = sin(30) * 284 feet = 142 feet. For x = 45 degrees: Height = sin(45) * 284 feet = 200.71 feet (rounded to the nearest hundredth). For x = 60 degrees: Height = sin(60) * 284 feet = 245.98 feet (rounded to the nearest hundredth). Learn more about Trigonometry here:
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3/10 is what number of 9
Answer:
30
Step-by-step explanation:
unknown number = x
3/10 × x = 9
3x/10 = 9
3x = 90
x = 30
Answer:
2.7 or 2 7/10.
Step-by-step explanation:
9 * 3/10
= 27 / 10
= 2.7.
Please HELP LOTS OF POINTS
Question:
Clay bought a baseball card in 2001 for $50. In 2016, the card's value was $500. Determine the average annual rate (r) of appreciation to the nearest whole percent. Show all work.
Answer:
67%
Step-by-step explanation:
500=50*x*15
500=750*x
500/750=x
.666666666=x
.67=x
67%=x
A swimming pool in the shape of a right rectangular prism measures 24 feet by 16 feet and is 4.5 feet deep across the entire pool. What is the volume of the swimming pool, in cubic feet?
72
108
324
1,728
Answer: D- 1,728
Step-by-step explanation: I did the quiz
Answer:
d
Step-by-step explanation:
If the hypotenuse of a right triangle measures 15 cm and one of the legs measures 12 cm, what is the length of the other leg?
Step-by-step explanation:
12 to the 2nd power=144
15 to the 2nd power =225
225-144=81
square root of 81 is 9
solve the system of equations y=2x -4,y = -x+2
Answer:
(2,0)
Step-by-step explanation:
Solve by graphing:
Use a graphing tool to graph the lines y=2x -4 and y = -x+2.
The lines intercept at point (2,0).
Therefore, the solution to the set of equations is (2,0).
[tex]x=2\\y=0[/tex]
Brainilest Appreciated!
Answer:
(0, -4) and (2,0)
Step-by-step explanation:
Find the area of the figure. Round to the nearest tenth
The Jones family has saved a maximum of $750 for their family vacation to the beach. While planning the trip, they determine that the hotel will average $125 a night and tickets for scuba diving are $75. The inequality can be used to determine the number of nights the Jones family could spend at the hotel
750≥75 + 125h
Answer:
Value of h greater than 5.4 will make inequality false.
Step-by-step explanation:
This question is incomplete; here is the complete question.
The Jones family has saved a maximum of $750 for their family vacation to the beach. While planning the trip, they determine that the hotel will average $125 a night and tickets for scuba diving are $75. The inequality can be used to determine the number of nights the Jones family could spend at the hotel 750 ≥ 75 + 125h. What value of h does NOT make the inequality true?
From the given question,
Per night expense (expected) = $125
If Jones family stays in the hotel for 'h' days then total expenditure on stay = $125h
Charges for scuba diving = $75
Total charges for stay and scuba diving = $(125h + 75)
Since Jones family has saved $750 for the vacation trip so inequality representing the expenses will be,
125h + 75 ≤ 750
125h ≤ 675
h ≤ [tex]\frac{675}{125}[/tex]
h ≤ 5.4
That means number of days for stay should be less than equal to 5.4
and any value of h greater than 5.4 will make the inequality false.
In how many wages can the starting six players of a volleyball team stand in a row for a picture
A:6
B:36
C:720
In △CDE , CD=10 , DE=7 , and m∠E=62∘ . What is m∠D to the nearest tenth of a degree?
We have been given that in △CDE , CD=10 , DE=7 , and m∠E=62 degrees. We are asked to find the measure of angle D.
We will use law of sines to solve our given problem.
[tex]\frac{a}{\sin(A)}=\frac{b}{\sin(B)}=\frac{c}{\sin(C)}[/tex], where, a, b and c are opposite sides to angles A, B and C respectively.
First of all we will find measure of angle C as:
[tex]\frac{7}{\sin(C)}=\frac{10}{\sin(62^{\circ})}[/tex]
[tex]\sin(C)=\frac{7\cdot \sin(62^{\circ})}{10}[/tex]
[tex]\sin(C)=\frac{7\cdot 0.882947592859}{10}[/tex]
[tex]\sin(C)=0.6180633150013[/tex]
Now we will use arcsin to solve for C as:
[tex]C=\sin^{-1}(0.6180633150013)[/tex]
[tex]C=38.174844995363^{\circ}[/tex]
[tex]C\approx 38.2^{\circ}[/tex]
Now we will use angle sum property to find measure of angle D.
[tex]\angle D+\angle C+\angle E=180^{\circ}[/tex]
[tex]\angle D+38.2^{\circ}+62^{\circ}=180^{\circ}[/tex]
[tex]\angle D+100.2^{\circ}=180^{\circ}[/tex]
[tex]\angle D+100.2^{\circ}-100.2^{\circ}=180^{\circ}-100.2^{\circ}[/tex]
[tex]\angle D=79.8^{\circ}[/tex]
Therefore, the measure of angle D is approximately [tex]79.8^{\circ}[/tex].
Measure of angle D will be 79.8°.
Sine rule in a triangle, Sine rule,[tex]\frac{c}{\text{sinC}}= \frac{d}{\text{sinD}}= \frac{e}{\text{sinE}}[/tex]
Here, c, d and e are the sides and C, D, E are the angles opposite
to these sides of the given triangle.
Given in the question,
In ΔCDE,
CD = 10 units
DE = 7 units
m∠E = 62°
By applying sine rule,
[tex]\frac{7}{\text{sinC}}= \frac{d}{\text{sinD}}= \frac{10}{\text{sin(62)}}[/tex]
[tex]\frac{7}{\text{sinC}}= \frac{10}{\text{sin(62)}}[/tex]
[tex]\text{sin(C)}=\frac{\text{sin(62)}\times 7}{10}[/tex]
[tex]=0.618063[/tex]
C = [tex]\text{sin}^{-1}(0.618063)[/tex]
C = 38.175°
≈ 38.2°
By triangle sum theorem of a triangle,
m∠C + m∠D + m∠E = 180°
38.2 + m∠D + 62° = 180°
m∠D = 79.8°
Therefore, measure of angle D will be 79.8°.
Learn more about the sine rule here,
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Your math teacher asks you to help calculate the height of the gulf coast on your football field you and your partner gather the measured as shown find the height of the top of the goal post round to the nearest 10th of a foot
Answer:
Check the explanation
Step-by-step explanation:
Kindly check the attached image for the step by step explanation for the answer to the question