Answer:
B. 48
Step-by-step explanation:
just took the test <3
Answer:
mArc FH = 48
Step-by-step explanation:
a rice cooker was sold for $60 after a discount of 60% waht was the usual price of the rice cooker
Discounted price = $60
Discount = 60%
Let the usual price be x.
So, x - (60% of x) = $60
=> x - [(60/100) × x] = $60
=> x - (60x/100) = $60
=> x - (3x/5) = $60
=> (5x/5) - (3x/5) = $60
=> 2x/5 = $60
=> 2x = $60 × 5
=> 2x = $300
=> x = $300/2
=> x = $150
So, the usual price is $150.
Help on number 1 please!! Thanks.
Answer:
I believe the answer is c
HURRY The real root of the equation x3 – 7x2 + 15x – 25 = 0 is 5. What are the nonreal roots?
–4i, 4i
2 – 4i, 2 + 4i
1 + 2i, 1 – 2i
–16i, 16i
The non real roots of the polynomial x³ – 7x² + 15x – 25 = 0 are; 1 + 2i, 1 – 2i
What is the non - real root?
Non real roots are simply imaginary roots.
We are told that the real roots of the equation x³ – 7x² + 15x – 25 = 0 is 5.
Now, it means that (x - 5) is a factor of the given polynomial. Thus, we can factorize the polynomial as;
(x - 5)(x² - 2x + 5) = 0
Now, to find the non - real roots, we will use quadratic formula on (x² - 2x + 5) to get;
x = [-(-2) ± √((-2)² - (4 * 1 * 5))]/2(1)
x = (2 ± √(-16))/2
x = 1 ± 2i
x = 1 + 2i, 1 – 2i
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Answer:
c
Step-by-step explanation:
If f(x)=x^(2 )+4 then verify (fof^(-1))(x)=(f^(-1) of)(x)=x. (Consider the positive values only)
Answer:
Step-by-step explanation:
If f(x)=x²+4 then (fof⁻¹)(x)=(f⁻¹of)(x)=x is proved
What is a function?A relation is a function if it has only One y-value for each x-value.
Composite functions are when the output of one function is used as the input of another.
If f(x)=x²+4
Then we have to prove f⁻¹of(x)=f⁻¹(f(x)
Let us consider fof⁻¹(x)
f(f⁻¹(x))
x
So (fof⁻¹(x))=x
Now f⁻¹of(x)=f⁻¹(f(x)
=x
Hence, If f(x)=x²+4 then (fof⁻¹)(x)=(f⁻¹of)(x)=x is proved
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simplify the expression 9n+1/4+6y+4n-4y
Answer: =13n+2y+1/4
Step-by-step explanation: Hope this help :D
Let simplify step by step
9n+1/4+6y+4n-4y
=9n+1/4+6y+4n-4y
combine like terms:
=9n+1/4+6y+4n+-4y =(9n+4n) +(6y+-4y) +(1/4)
=13n+2y+1/4 Hope
HELP ASAP! I need help and I’m confused. Thanks!!
Answer:
The length of GH is also 12 because JH is the perpendicular bisector of GI which means both segments are divided exactly in half, so GH=HI so GH=12 which means HI=12. Hope that helps:)
Step-by-step explanation:
The numbers of licensed drivers in four samples taken from a population of
students are shown in the table below. Which of the following choices is most
likely closest to the percentage of students in the population who are
licensed drivers?
Sample Size Number of Licensed Drivers
25
7
50
12
75
15
100
16
O A. 16%
O B. 20%
ОООО
C. 24%
O D. 28%
Answer:
The answer is 16% I just took the test
Step-by-step explanation:
Why did the duck fly south for the winter
Answer:
warmth
Step-by-step explanation:
they migrate to stay warm I hope you do good (:
Answer:
To find a warmer place for nesting grounds or migration.
Step-by-step explanation:
please help me solve this
Answer:
55p +75a = 2725
Step-by-step explanation:
What is the probability of obtaining four tails in a row when flipping a coin? Interpret this probability
Answer:
1/16 chance
Step-by-step explanation:
so flipping a tail once is 1/2
so since if we want 4 in a row then multiply 1/2 4 times.
you‘ll get 1/16
so 1/16
Can someone pls help. Been on this question for almost an hour
Step-by-step explanation:
SA = ((p x h) / 2) + b
p = perimeter of the base
h= height = 11in
b = area of the base
9514 1404 393
Answer:
(c) 75
Step-by-step explanation:
The surface area is the sum of the areas of the four triangular faces and the square base. For base side length s, the base area is ...
A = s²
For slant height h and base s, the area of one triangular face is ...
A = 1/2(s)(h)
Then the total surface area is ...
SA = s² + 4(1/2sh) = s(s +2h) . . . . . surface area of square pyramid
For a side length of s = 3 in and a slant height of h = 11 in, the total surface area is ...
SA = (3 in)(3 in + 2×11 in) = (3 in)(25 in)
SA = 75 in²
Can someone please hope and show the work?
Answer: 16 pounds of grain.
Step-by-step explanation: 36 divided by 9 is 4, which means we have to multiply bin C by how much bin J was multiplied by, which is 4, so 4x4 is 16.
(let me know if you would like me to explain more on this)
Urgent please help Leon used 0.8 cups of sugar to make 2 cherry pies. How much sugar, on average, did he put in each pie?
Answer:
. 4 cups of sugar in each pie
Answer: 0.4 cups of sugar per pie
Step-by-step explanation: Divide the total amount of cups of sugar by the number of pies.
A ski set is on sale for 10% off and for today only customers get an
additional 30% off. This made the final one day sale price of $328. What
was the original seling price of the ski set? *
Answer:
1034
Step-by-step explanation:
A model rocket is launched with an initial upward velocity of 156 ft/s. The rocket's height h (In feet) after t seconds is given by the following.
h=156t-16t²
Find all values of t for which the rocket's height is 60 feet.
Round your answer(s) to the nearest hundredth.
(If there is more than one answer, use the "or" button.)
Explanation
Check
ground
t = 0 seconds
☐or D
X
5
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I need help
The quadratic equation that gives the height of the rocket, h = 156·t - 16·t² is evaluated at h = 60 feet to give the two times the rocket's height is 60 feet as 0.40 seconds and 9.35 seconds.
What is a quadratic equation?A quadratic equation is an equation of the second degree that can be expressed in the form; a·x² + b·x + c = 0, where the letters, a, and b represents the coefficients of x and c is a constant.
The initial velocity of the rocket = 156 ft./s upwards
The given equation of the rocket is: h = 156·t - 16·t²
The times when the rocket height is 60 feet are found by plugging in the value h = 60, in the equation of the vertical height of the rocket as follows:
h = 60 = 156·t - 16·t²
156·t - 16·t² - 60 = 0
4·(39·t - 4·t² - 15) = 0
Therefore: \(39\cdot t - 4\cdot t^2 - 15 = \dfrac{0}{4} =0\)
39·t - 4·t² - 15 = 0
-4·t² + 39·t - 15 = 0
From the quadratic formula which is used to solve the quadratic equation of the form; f(x) = a·x² + b·x + c, is presented as follows;
\(x = \dfrac{-b\pm\sqrt{b^2-4\cdot a \cdot c} }{2\cdot a}\)
The solution of the equation, -4·t² + 39·t - 15 = 0, is therefore:
\(t = \dfrac{-39\pm\sqrt{(39)^2-4\times (-4) \times (-15)} }{2\times (-4)}= \dfrac{-39\pm\sqrt{1281} }{-8}\)
Therefore, when the height of the rocket is 60 feet, the times are: \(t = \dfrac{-39-\sqrt{1281} }{-8}\approx 9.35\) and \(t = \dfrac{-39+\sqrt{1281} }{-8}\approx 0.40\)
The times when the height of the rocket is 60 feet, the times are:
t ≈ 9.35 s, and t ≈ 0.40 s
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Solve the equation -=-6
24
0-4
04
O-144
O 144
=-6 for b.
Answer:
-144
Step-by-step explanation:
aye its the flvs gang
b/24=-6
we multiply both sides by 24 since a fraction is basically dividing the 2 numbers the inverse is multiplying
b/24=-6
x24. x24
b= -144
hopes this helps please mark brainliest
Two fire-lookout stations are 13 miles apart, with station B directly east of station A.
Both stations spot a fire. The bearing of the fire from station A is N35°E and the
bearing of the fire from station B is N49°W. How far is the fire from station B?
Choose the correct formula given below.
The distance between the fire and station B is 10.7miles
What is sine rule?The sine rule states that if a, b and c are the lengths of the sides of a triangle, and A, B and C are the angles in the triangle; with A opposite a, etc., then a/sinA=b/sinB=c/sinC.
The angle at A = 90- 35
= 55°
The angle at B = 90-49
= 41°
Angle at the fire = 180-(41+55)
= 180-96 = 84°
Using sine rule
sin84/13 = sin55/x
xsin84 = 13sin55
0.995x = 10.65
x = 10.65/0.995
x = 10.7 miles
Therefore the distance between the fire and station B is 10.7 miles.
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What is three quarters of an hour. How do you do this problem.
Answer:
that would be 45 minutes
Step-by-step explanation:
take an hour, which is 60 minutes and 3/4 of an hour is 45
Divide 60 by 4, which will give you the answer for 1/4 of an hour (aka one quarter) Then you'd take that (which is 15) and multiply it 3 times, thus giving you 45.
Equation style:
60/4=15
15 x 3= 45
hello i need help on it
Answer:
the answer will be 29 :)
A rideshare service charges a flat fee of $6.00, plus $1.50 for every mile driven. Let t represent the total cost of the ride, and m represent the number of miles driven. Determine the dependent and independent variables, write an equation to represent this relationship, and then complete the table to show the total cost for riding 3 to 10 miles.
Answer:
The independent variable is m, while the dependent variable is t.
Step-by-step explanation:
What is the independent variable?An independent variable is a variable that does not rely on another variable to change its outcome. In this case, the variable 'm' does not rely on the ride's total cost.
What is the dependent variable?The dependent variable is a variable that depends on another variable to give its amount. In this case, 't' is the dependent variable, because it depends on how many miles were driven, in order to provide the correct answer.
Write an equation representing this relationship:t = $6 + ($1.50 x m)
Complete the table to show the total cost for riding 3 to 10 miles:3 miles: t = $6 + ($1.50 x m) or $10.50 = $6 + ($1.50 x 3)
4 miles: t = $6 + ($1.50 x m) or $12 = $6 + ($1.50 x 4)
5 miles: t = $6 + ($1.50 x m) or $13.50 = $6 + ($1.50 x 5)
6 miles: t = $6 + ($1.50 x m) or $15 = $6 + ($1.50 x 6)
7 miles: t = $6 + ($1.50 x m) or $16.50 = $6 + ($1.50 x 7)
8 miles: t = $6 + ($1.50 x m) or $18 = $6 + ($1.50 x 8)
9 miles: t = $6 + ($1.50 x m) or $19.50 = $6 + ($1.50 x 9)
10 miles: t = $6 + ($1.50 x m) or $21 = $6 + ($1.50 x 10)
A fire department's response time measures the time from when the alarm is sounded at the firehouse to the time the first fire engine leaves the station. The histograms below display the response times for fire departments in two small towns: Hilltown and Crestview.
Which of the following correctly compares the variability in response times for the two towns?
-Hilltown and Crestview show similar variability in their response times.
-The variability in Hilltown‘s response times is less than that of Crestview.
-The median response time in Crestview is greater than that of Hilltown.
-The variability in Hilltown‘s response times is greater than that of Crestview.
Answer:
B. The variability in Hilltown's response times is less than that of Crestview.
Step-by-step explanation:
This one makes most sense of all.
Tell me if I'm wrong :)
The interval that contains the median response time is; 50 - 60 seconds
What is the median of the histogram?The median of a histogram is defined as the middle element of the histogram.
Here, we have,
Now, in this histogram given, we see that the y-axis is for the relative frequency, while the x-axis is the Response time (in seconds).
Observing this histogram closely, it is clear that the response times are all symmetrical around the interval 50 - 60 seconds as it is also the middle element of the histogram.
Thus, we can conclude that the interval that contains the median response time is; 50 - 60 seconds
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eddie spends £2.75 on cake and £1 on groceries and has 2/3 left over how much did he start with
answer:
£11.25
explanation:
2.75+1=3.75 this was one third so you have to multiply 3.75 by 3 so you get 11.25.
It takes Natalie five hours to tar a roof. Imani can tar the same roof in ten hours. How long would it take them if they worked together? Round your answer to the nearest hundredth. A. 3.51 hours B. 2.77 hours C. 3.33 hours D.4.3 hours
Answer:
C. 3.33 hours
Step-by-step explanation:
Use the algebra work equation:
\(\frac{1}{tb}\) = \(\frac{1}{t1}\) + \(\frac{1}{t2}\), where tb is the time to work together, t1 is the time it takes one person, and t2 is the time it takes the other person
Plug in the values we know:
\(\frac{1}{tb}\) = \(\frac{1}{5}\) + \(\frac{1}{10}\)
\(\frac{1}{tb}\) = \(\frac{4}{20}\) + \(\frac{2}{20}\)
\(\frac{1}{tb}\) = \(\frac{6}{20}\)
20 = 6tb
3.33 = tb
So, it would take them 3.33 hours when working together.
Simplify. 3.5(3.7 − 2.2)/4(−1.75)
−1.5
−0.75
0.75
1.5
\(\stackrel{\textit{\huge P~\hfill E~\hfill M~\hfill D~\hfill A~\hfill S}}{\cfrac{3.5(3.7-2.2)}{4(-1.75)}\implies \cfrac{3.5(1.5)}{4(-1.75)}\implies \cfrac{5.25}{4(-1.75)}\implies \cfrac{5.25}{-7}\implies -0.75}\)
Convert the following into percentage. 2.00 =
Answer:
2/100
Step-by-step explanation:
to find a percentage you times by a hundred
What does the point where the line crosses the y-axis mean for each sponsor?
Answer:
That's what they started out with.
Step-by-step explanation:
In this case, the sponsors each had different starting amounts of money.
Find the volume of this figure. PLZZZ HELP ASAP!!!!!!
Answer:I think its c
Step-by-step explanation:
im so sorry if im wrong
whats 332.23 (234.320)
Answer:
The answer is 77848.1336
A barrel shaped like a cylinder is laid on its side and rolled up a ramp. The barrel has a circular base that is
2.5 ft in diameter. If the barrel turns 26 times in being rolled up the ramp, how long is the ramp?
Use the value 3.14 for a. Round your answer to the nearest tenth. Do not round any intermediate steps.
Check the picture below.
if the barrel is rolled up the ramp 26 times, each time the barrel is rolled up fully, it covers a length the circumference of its base, so if it does it 26 times, it wen up its base circumference 26 times.
\(\textit{circumference of a circle}\\\\ C=\pi d~~ \begin{cases} d=diameter\\[-0.5em] \hrulefill\\ d=2.5 \end{cases}\implies C=2.5\pi \implies \stackrel{\textit{26 times}}{C =65\pi }\implies \stackrel{\pi =3.14}{C=204.1}\)
Find f(3) and interpret its meaning.
Answer:
f(3) = 425
f(3) is the elevation of a mountain climber after 3 hours of climbing.
Step-by-step explanation:
So we are given a line that relates time to elevation. We are also given that the equation of the line is f(x) = 125x + 50. From looking at the graph given, we can see that x is the time, in hours, and y, or f(x), is the height, in feet. We are asked to find f(3) and interpret it's meaning.
To find f(3), we would have to find what f(x) is when x = 3. To do this, lets plug in 3 for x into the given equation:
f(3) = 125(3) + 50 = 425
So f(3) = 425. Now, we already know that x is the time in hours and y, or f(x), is the elevation in feet. We set x to 3 when solving for f(3). We have also found that f(3), or y when x = 3, is 425. So f(3), or 425, is the elevation after 3 hours.
I hope you find my answer and explanation to be helpful. Happy studying.