The indoor temperature ranges between 68.5 and 76.5 degrees Fahrenheit.
Given data;
According to the equation |x - 72. 5| = 4, the home's heating system is configured to maintain the minimum and maximum temperatures (in degrees Fahrenheit).
To find the minimum and maximum temperatures in the house,
We know that modulus is used to make a negative value into a positive;
|x - 72. 5| = 4
|A| = -A < x < A
|x - 72. 5| = 4
⇒ x - 72.5 = -4 x - 72.5 = +4
x = 72.5 - 4 x = 4 + 72.5
x = 68.5 x = 76.5
Hence, the minimum and maximum temperatures in the house are 68.5 and 76.5 Fahrenheit.
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math homework percentages help pls
Answer: 70 dollars in profit
Step-by-step explanation: 20 x 13.50 = 270 20 - 3 = 17 20 x 17 = 340 340 - 270 = 70
A department store buys 400 shirts at a cost of $10,800 and sells them at a selling price of $30 each. Find the percent markup. ... The percent markup is %.
The percent markup is 11.11%.
There is a department store. The total number of shirts bought by the department store is 400. The total cost of the shirts bought by the department store is $10,800. The department store sells all the shirts for $30 each. We need to find the percent markup.
We first need to find out the cost of each shirt. The cost price of each shirt is the total cost of all the shirts divided by the total number of shirts bought by the department store.
C = $10,800/400
C = $27
Hence, each shirt was purchased for a price equal to $27. To find the markup percentage, we need to find the percentage difference between the cost price and the selling price of the shirt.
M = [(30 - 27)/27]*100%
M = (3/27)*100%
M = 100/9%
M = 11.11%
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a function f is increasing on the interval (1 comma 4 )and decreasing on the interval (4 comma 9 ). determine and explain whether there is a local maximum or local minimum on the interval (1 comma 9 ).
As per the given function, the local minimum is 1 and the local maximum is 9 and it can be written as (1, 9)
Local Minimum and maximum
The term Local maxima and minima are the maxima and minima of the function that arises in a particular interval.
Here the Local maxima would be the point in the particular interval for which the values of the function near that point are always less than the value of the function at that point.
Whereas the local minima would be defined as the point where the values of the function near that point are greater than the value of the function at that point.
Given,
Here we have the function f is increasing on the interval (1, 4) and decreasing on the interval (4, 9).
Here we need to determine and explain whether there is a local maximum or local minimum on the interval (1, 9).
According to the definition of the local minimum and local maximum,
While we looking into the given point,
We have identified that the resulting point is
=> (1, 4) => 1 (minimum)
=> (4, 9) => 9 (maximum)
Therefore, the minimum and maximum is (1, 9).
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Approximate negative thirteen plus square root of seventy to the nearest tenth.
−8.4
−4.6
4.6
8.4
The value of the expression -13+√70 to the nearest tenth is -4.6
What is Arithmetic operation?Arithmetic operations involves the study of numbers, operation of numbers that are useful in all the other branches of mathematics. It basically comprises operations such as Addition, Subtraction, Multiplication and Division.
The expression -13+√70 comprises of addition of -13 and √70
The value of √70 is 8.4(to the nearest tenth).
Therefore the value of -13+√70
=-13+8.4
= -4.6( nearest tenth)
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The three-dimensional figure below is a cylinder with a hole in the shape of a rectangular prism going through the center of it. The radius is 10 yards. Find the volume of the solid in cubic yards, rounded to the nearest ten. Use 3.14 for pi.
The solid has an estimated volume of 1510.8 cubic yards
Volume of CylinderThe volume of a cylinder is the density of the cylinder which signifies the amount of material it can carry or how much amount of any material can be immersed in it. Cylinder’s volume is given by the formula, πr²h , where r is the radius of the circular base and h is the height of the cylinder.
The volume of the cylinder can be calculated as
v = πr²h
v = π* 10² * 5
v = 500π yd³
Let's calculate the volume of the rectangular figure
v = l * w * h
v = 3 * 4 * 5
v = 60 yd³
We should subtract the volume of the rectangular figure from the volume of cylinder to determine the volume of the solid.
V = 500π - 60
v = 1510.8 yd³
The volume of the solid is calculated as 1510.8 yd³
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Answer:
1,510
Step-by-step explanation:
The screening process for detecting a rare disease is not perfect. Researchers have developed a blood test that is considered fairly reliable. It gives a positive reaction in 97% of the people who have a disease. However, it erroneously gives a positive reaction for 5% of the people who do not have the disease. Consider the null hypothesis "the individual does not have the disease". What is the probability of type i error if the new blood test is used?.
The probability of a type I error in the case of the new blood test is 0.022.
Given;
It is not always possible to identify rare diseases by screening. A blood test that has been created by researchers is thought to be reasonably dependable. In 97% of those who suffer from a sickness, it produces a favorable response. However, 5% of those tested who do not have the condition received an incorrectly positive response. Take into account the null hypothesis that "the person does not have the disease."
A: The individual does not have the disease
B: The individual does have the disease
We know that,
Type I Error is rejecting the true null hypothesis
P (Type I Error) = P(Positive reaction to an individual who does not have the disease)
=0.022
Hence, the probability of a type I error is 0.022.
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suppose you are standing such that a 63-foot tree is directly between you and the sun. if you are standing 240 feet away from the tree and the tree casts a 270-foot shadow, how tall could you be and still be completely in the shadow of the tree?
You could stand at 7 feet and still be completely in the shadow of the tree.
What is the property of a similar triangle?
Two triangles are similar if their corresponding angles are equal and their corresponding sides are within the same ratio (or proportion).
Given
You are standing such that a 63-foot tree is directly between you and the sun.
If you are standing 240 feet away from the tree and the tree casts a 270-foot shadow.
BC to be the height of the tree and DE to be the height of how tall you could be and still be completely in the shadow of the tree.
∠D = ∠B = 90 degrees
Therefore,
By the similar triangle property;
DE/BC = AD/AC
x/63 = (270-240)/270
x/63=30/270=0.11
x=63*0.11 = 7
Hence, you could stand at 7 feet and still be completely in the shadow of the tree.
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Tyrese bought 35 tickets to use at the carnival. He used some of the tickets to ride the bumper cars and play some games. Now he has 28 tickets left. What is the percentage of decrease in the number of tickets that he has?
34.7
+ 26.2
-------
um help
Find the area of the circle pictured above.
Round your answer to the nearest tenth
Answer:
~201.1[tex]u^2[/tex]
Step-by-step explanation:
Formula for area of a circle:
[tex]\pi r^2[/tex]
The diameter is any straight line that passes through the circle and endpoints lie on the perimeter of the circle.
We are given the diameter: 16. The diameter is twice the radius (for all circles) Divide the diameter, 16 by 2 to get the radius. If the problem gives you the radius, which is a line from the center of the circle, do not divide by 2 and directly plug into formula.
16/2 = 8
Plug into formula.
[tex]\pi r^2[/tex]
[tex]\pi 8^2[/tex]
Using PEMDAS, the standard order of operations order for math, we firsty do 8^2 before multiplying by pi.
8^2 = 8 x 8 = 64
[tex]64*\pi[/tex] = ~201.1
Determine the length of the line segment shown. line segment from negative 10 comma 9 to 5 comma negative 1
4 units
18 units
19 units
21 units
The length of the line is 18 units.
What is Distance Formula?If there are two point P( a, b) and Q (c, d) then the distance between P and Q is
d= √ ( c- a)² + ( d- b)²
Given points: ( -10 ,9 ) and ( 5, -1)
So, the distance between these two points
Using Distance formula
d= √ ( c- a)² + ( d- b)²
d = √(5 - (-10))² + (- 1- 9)²
d= √15² + (-10)²
d= √225+ 100
d= 18. 027 units
Hence, the length of the line is 18 units.
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Answer:
The solution to this problem is option (B) - 18 units
Step-by-step explanation:
I took the test and the test told me the answer is 18 so hence, choose option (B) as your answer.
Hope this helped:)
What is the product of 1/23 and −3/12?
Melissa uses 3/5 as much water as Neil to water her plants. If Melissa uses 4 and 1/3 gallons of water, how much does Neil use?
AB= 6 cm, AC = 12 cm
Calculate the length of CD.
Give your answer to 3 significant figures.
C
D
55°
12 cm
B 6 cm
A
The length of the side CD of the triangle is 12.686 cm up to 3 significant figures.
We know from the information that
AB = 6cm AC = 12cm
Now we have to calculate the length of DC
From given figure, we have,
In Δ ACB,
CA² = BA² + BC² (By using Pythagoras theorem)
12² = CB²+ 6²
CB² = 12² - 6²
CB² = 144 - 36
CB² = 108
∴ BC = √( 108) cm.
Now consider, in Δ CBD,
as, we know that from trigonometric ratios , sin x = opposite side / hypotenuse
sin 55° = BC / DC
0.81915 = √108 / DC
DC = 10.392 / 0.81915
⇒ DC = 12.68632...
∴ DC ≈ 12.686 cm
Therefore the length of the side DC is approximately 12.686 cm up to 3 significant figures.
Disclaimer: The missing image of the triangle is attached below.
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Write an equation in slope-intercept form for the line that passes through the given point and is parallel to the graph of the equation.
(−4, 2); y=−1/2x+6
Answer:
y = mx + b
-2 = ½(-4) + 6
Step-by-step explanation:
formula ; y = mx + b
where y = y co-ordinate
m = slope
x = x co-ordinate
b = y intercept
Therefore; y = mx + b
-2 = ½(-4) + 6
What is the equation of the blue line
The equation of the blue line in the given graph is y = -x/2 + 2 .
In the question ,
a line graph is given,
we have to find the equation of the blue line .
to find the equation of line , we need at least two points ,
So , from the graph we can see that the two points from where the blue line passes the graph are (4,0) and (0,2) .
the slope = (2-0)/(0-4)
m = 2/(-4)
m = -1/2
So , the equation of the line passing from the points (4,0) with slope -1/2 , is
(y - y₁) = m(x - x₁)
y - 0 = (-1/2)(x - 4)
y = -x/2 + 2
Therefore , The equation of the blue line in the given graph is y = -x/2 + 2 .
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Fiugrie out the ratio missing table text back answer !
NO EXPLAIN HURRY THANK BYE
The ratio between the fruit and vegetable is 1:3
RatioRatio shows how many times one number contains another. For example, if there are eight oranges and six lemons in a bowl of fruit, then the ratio of oranges to lemons is eight to six. Similarly, the ratio of lemons to oranges is 6:8 and the ratio of oranges to the total amount of fruit is 8:14. The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity. Ratios can be classified into two types. One is part to part ratio and the other is part to whole ratio.
We can simply say that a ratio is a fraction of one quantity over another quantity
In this case, we just have to figure the ratio between fruit and vegetables.
In the first column, we have fruit to vegetable as 2:6 = 1:3
In the second column, we have fruit missing. We can make that x.
Using the ratio between fruit and vegetable, when vegetable is 12, the fruit will be 12/3 = 4
The value of fruit in the second column will be 4.
In the third column, we have fruit as 6 and vegetable as y.
We can apply same ratio to get the vegetable which will be 6 * 3 = 18
In the third column, the vegetable is 18
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Tom drove at a constant speed of 50 miles per hour for 2.5 hours.
Albert drove at a constant speed of 65 miles per hour for 2 hours.
Who drove farther? How many more total miles did he drive?
Use the equation d=r×t to solve.
Answer:
Albert drove further.
He drove 5 miles further.
Step-by-step explanation:
The formula d = r x t is used to determine distance.
D is distance. R is rate ( in this case miles per hour). T is time.
Tom: D= 50 x 2.5
50 multiplied by 2.5 hours = 125
Tom drove 125 miles.
Albert: D= 65 multiplied by 2 hours = 130
Albert drove 130 miles.
7) What is the value of x?
21
42°
21
Drawing not to scale
The value of x in the given figure is x = 71° , the correct option is (c) .
In the question ,
a triangle ABC is given ,
the measure of angle A = 38°
we can see that length of the sides AB and AC is 21 , and we know when the length of two sides of the triangle is equal , it is called as isosceles triangle .
In isosceles triangle , the two angles corresponding to the two equal sides are equal , that means
angle B = angle C = x
In triangle ABC ,
By Angle Sum Property , we get
angle A + angle B + angle C = 180°
38 + x + x = 180
38 + 2x = 180
subtracting 38 from both the sides , we get
2x = 180 - 38
2x = 142
Dividing both sides by 2 , we get
x = 142/2
x = 71
Therefore , The value of x in the given figure is x = 71° .
The given question is incomplete , the complete question is
What is the value of x ,in the figure given below ? Drawing not to scale
(a) 21°
(b) 42°
(c) 71°
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f(x) = 1/3x + 1; h(x)= -f(x)
Answer:
h(x) = -1/3 x - 1
Step-by-step explanation:
Solution
h(x) = - f(x) This is a given
f(x) = (1/3) x + 1 Put h(x) on the left. Use a minus sign for f(x)
h(x) =-1((1/3)x + 1) Remove the outside brackets.
h(x) = -(1/3) x - 1
The outside brackets make 1/3 x and 1 = to a minus when a minus is put in front of f(x)
truck travelled from Town A to Town B. A van travelled from Town B to Town A at the same time . They met 10 km from the middle of the journey. Find the distance between Town A and Town B if the truck and the van travelled at 85 km / h and 60 km / h respectively .
Answer:
58 miles
Step-by-step explanation:
One truck second truck
rate 85 60
time t t
Distance d + 10 d -10
d + 10 = 85t d - 10 = 60t
d = 85= -10 d = 60t +10
Set the two equations equal to each other and solve
85t -10 = 60t + 10 Subtract 60t from each side
25t - 10 = 10 Add 10 to each side
25 t = 20 Divide both sides by 25
t = [tex]\frac{4}{5}[/tex]
Each were driving 4/5 of an hour. Plug into the one of the equaions
d + 10 = 85t
d + 10 = 85([tex]\frac{4}{5}[/tex])
d +10 = 68 Subtract 10 from both sides
d = 58
Answer:
Step-by-step explanation:
Givens
Truck = 85 km/hr
Van = 65 km/hr
t is the time they meet
Note
Truck A is travelling faster, so the place where they meet is closest to Town B.
Solution
Let the distance travelled by the truck be
d/2 + 10
Let the distance travelled by the van be
-d/2 + 10
Let t be the time they meet
85* (d/2 + 10) /t = -60*(d/2 + 10)/t multiply both sides by t
85*(d/2 + 10)*t/t = -60*(d/2 + 10)*t/t Combine
85*(d/2 + 10) = -60(d/2 + 10) Remove the brackets.
42.5 d + 850 = -30d - 600 Add 30 d to both sides
72.5d+ 850 = - 600 Subtract 850 from both sides.
72.5d = - 600 - 850 Combine
72.5d = -1450 Divide by 72.5
d = -1450 / 72.5
d = -20
The minus means that you are looking at it from the van's point of view.
8 3/5 as an improper fraction
Answer: 43/5
Step-by-step explanation: I multiplied the 5 and 8, which gave me 40. Then I added 3 and got 43/5.
For the imaginary number, which of these is a possible value of " if n is greater than 6?
A 0
B 5
C -2
D 1
E 2
Answer:
A 0
Step-by-step explanation:
In quadrilateral ABCD, triangle ADC is congruent to CBA. Show
that ABCD is a parallelogram.
Select EVERY indeterminate form to which L'Hopital's Rule can be directly applied to (there may be more than one). 0.00 0° U U 1° oo U U 8 - 0 U 8|8 o 8
The indeterminant form to which the L'Hopital's Rule can be applied are 0/0 and ∞/∞ , the correct options are (d) and (f) .
L'Hopital's Rule in calculus is used to evaluate weird limits that result in indeterminate forms that are 0/0, ∞/∞ . These types of limits
(a) cannot be calculated by direct substitution of limit and/or
(b) can be evaluated but using a very long procedure .
that means if [tex]\lim_{x \to a} \frac{f(x)}{g(x)}[/tex] = 0/0 or ∞/∞ ,
then [tex]\lim_{x \to a} \frac{f(x)}{g(x)} = \lim_{x \to a} \frac{f'(x)}{g'(x)}[/tex]
In the question ,
there are several indeterminant forms given which are 0.∞ , [tex]0^{0}[/tex] , [tex]1^{\infty}[/tex] , 0/0 , ∞ - ∞ , ∞/∞ , ∞⁰ .
By the definition of L'Hopital's Rule , the option that matches with the definition is 0/0 and ∞/∞ ,
So , the correct option is (d) 0/0 and (f) ∞/∞ .
Therefore , The indeterminant form to which the L'Hopital's Rule can be applied are 0/0 and ∞/∞ , the correct options are (d) and (f) .
The given question is incomplete , the complete question is
Select EVERY indeterminate form to which L'Hopital's Rule can be directly applied to (there may be more than one).
(a) 0.∞
(b) [tex]0^{0}[/tex]
(c) [tex]1^{\infty}[/tex]
(d) 0/0
(e) ∞ - ∞
(f) ∞/∞
(g) ∞⁰
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evaluate the expression when x = 8 and y = 4 6y-x
Answer:
16
Step-by-step explanation:
=6(4)-(8)
=24-8
=16
Can anybody solve this for me?
y= -3(-1)+3[slope intercept form]
work out 2 1/4 x 3 1/5 giving in its simplest form
Answer:
36/5
Step-by-step explanation:
32.55
Step-by-step explanation:
21/4×31/5
651/20
I need help, The problem is in the picture
Answer: i think its a=52
and b=8 srry if its wrong tell me and ill try to fix it thx:)
Step-by-step explanation:
In a family of 48, 24 member like caava and 36 member like potatoe. 12 member like both caava and potatoe. How many member like caava?
Using the subtraction, the number of member who only like caava is 12.
In the given question we have to find how many member like caava.
Total member of family = 48
Member who like caava=24
Member who like potato=36
Member who like both caava and potato=12
In the given number of member who like caava having a member who also like potato and some are who only like caava.
So the number of member who only like caava = Total number of member who like caava−Total number of member who like both caava and potato
The number of member who only like caava =24−12
The number of member who only like caava =12
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