Answer:
10
Step-by-step explanation:
Total Ratio =1 1/2 +2 +1/2
=2+2
=4
=40÷4
=10
=
PLS HURRY I AM GIVING BRAINLIEST!!!
the question is in the photo!!
Jordan spend 25 minutes writing each dayNoHow much time does Jordan spend writing each dayFrom the question, we have the following parameters that can be used in our computation:D + W = 75W + 25 = DSo, we haveW + W + 25 = 75EvaluateW = 25This means that Jordan spends 25 minutes on writing is it possible?Based on the answer in (a), the truth statement is No
Line segment AB is equal to 40cm. What is the length of the middle part in terms of x?
Answer:
Step-by-step explanation:
40/30=409
Caroline had 10 5/8 pounds of sunflower seeds. She gave some to Joe.
Now she has 8 pounds of sunflower seeds left. How much did she give
to Joe?
Answer:
2 5/8
Step-by-step explanation:
10 5/8 - 8
Are all intersecting lines perpendicular? Draw a picture to help explain your answer
Not all intersecting lines are perpendicular.
What are perpendicular lines?Perpendicular lines require a 90-degree angle of intersection, creating the formation of right angles.
Nonetheless, unlike perpendicular lines that necessitate exactly 90 degrees of intersections, other types of driven lines can be at varying angles beside these.
As such, it is critical to highlight that in general intersecting lines come with different angles of intersection, and only those featuring exact 90-degree angle of intersection become normal cases of intersecting lines, becoming one among many subtypes existing today.
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The given graph shows the cigarette consumption (in billions) in the United States for the years 1900 to
2007
Choose the best estimate for the number of cigarettes smoked in 1980.
600 billion
620 billion
575 billion
700 billion
Answer: 700 billion
Step-by-step explanation:
what is solar installation
Answer:
They are actually panels, not installation. but it is an installation for downloading/installing.
Solar panels are devices engineers use that take the sunlight of the sun and turn it into electricity or heat.
Hope it helps!!!Brainliest pls!!!A can of soda can be modeled as a right cylinder. Jin measures its height as 11.8 cm
and volume as 281 cubic centimeters. Find the can's diameter in centimeters. Round
your answer to the nearest tenth if necessary.
Answer: 5.5 cm
Step-by-step explanation:
did it
Find the monthly finance charge (interest payment) in the situation described. You maintain an average balance of $2125 on your credit card, which carries a 24% annual interest rate.
Answer:
30
days
The finance charge for a billing cycle is $41.92.
The new opening balance in the following billing cycle is $2,166.92.
THE MONTHLY CHARGE IS 41.92
Step-by-step explanation:
An odometer show that a car has traveled 40,000 miles by January 1, 2020. The car travels 16,000 miles each year. Write an equation that represents the number y of miles on the car’s odometer x years after 2020.
y = __
The equation will be \(y=40000+16000*x\)
How do you resolve a two-variable equation?Solve one of the equations for a particular variable. After that, insert that into the other equation and find the variable there. To find the value for the other variable, enter that value into either equation.
Two variables are used in what kind of equation?Equations come in two varieties: identities and conditional equations. All possible values of the variables result in an identity. Only certain combinations of the variables' values make a conditional equation true. Two expressions joined by the equals symbol ("=") form an equation.
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can someone PLEASE help me with this
Using the prοperties οf the triangle the values are οbtained as -
m ∠DGE = 47.5°
m ∠EDG = 85°
FD = 8.30
GD = 13
EG = 20
What are triangles?Triangles are a particular sοrt οf pοlygοn in geοmetry that have three sides and three vertices. Three straight sides make up the twο-dimensiοnal figure shοwn here. An example οf a 3-sided pοlygοn is a triangle. The tοtal οf a triangle's three angles equals 180 degrees. One plane cοmpletely enclοses the triangle.
Twο triangles ADC and DEG are given.
In triangle ADC the measure οf angle A is given as 45°.
And the measure οf angle C is given as 50°.
Accοrding tο the prοperties οf a triangle, the sum οf angles οf a triangle is 180°.
So, mathematically this can be represented as -
∠A + ∠D + ∠C = 180°
Substituting the values into the equation -
45° + ∠D + 50° = 180°
∠D + 95° = 180°
∠D = 180° - 95°
∠D = 85°
The measure of angle D is obtained as 85°.
Now, since ∠ADC and ∠EDG are vertically opposite angles so they are equal.
So, mathematically this can be represented as -
∠EDG = ∠ADC
∠EDG = 85°
Also, the angle ∠EDG is bisected by the line segment BF.
So, in ΔDFG we have ∠FDG = 85/2 = 42.5°.
Now, in ΔDFG , the sum of angles of a triangle is 180°.
So, mathematically this can be represented as -
∠GFD + ∠FDG + ∠DGF = 180°
Substituting the values into the equation -
90° + 42.5° + ∠DGF = 180°
132.5° + ∠DGF = 180°
∠DGF = 180° - 132.5°
∠DGF = 47.5°
Now, in ΔDEG we have -
∠DGF = ∠DGE
∠DGE = 47.5°
Since, line segment FD is a bisector so we have -
EF = FG
EF = 10
Now, in Δ DFE Since, line segment FD is a bisector so we have -
EF = FG
EF = 10according to Pythagoras theorem we have -
ED² = EF² + FD²
Substituting the values into the equation -
13² = 10² + FD²
FD² = 13² - 10²
FD² = 169 - 100
FD = √69
FD = 8.30
Therefore, the value for FD is obtained as 8.30.
Now, in Δ DFG according to Pythagoras theorem we have -
DG² = FG² + FD²
Substituting the values into the equation -
DG² = 10² + √69
DG² = 100 + √69
DG = √(100 + √69)
DG = √169
DG = 13
Therefore, the value for DG is obtained as 13.
Since, line segment FD is a bisector so we have -
EG = EF + FG
EG = 10 + 10
EG = 20
Therefore, the value for EG is obtained as 20.
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What percent of 300 is 30?
2) 25% of 260 is what number?
3) 100 is 80% of what number?
Answer:
1) 20%
2) 65
3) 125
Step-by-step explanation:
An electrician wants to know whether batteries made by two manufacturers have
significantly different voltages. The voltage of 108 batteries from each manufacturer
were measured. The population standard deviations of the voltage for each
manufacturer are known. The results are summarized in the following table.
Manufacturer Sample mean voltage (millivolts) Population standard deviat
A
B
179
178
1
What type of hypothesis test should be performed? Select
What is the test statistic? Ex: 0.12
Does sufficient evidence exist to support the claim that the voltage of the batteries made
by the two manufacturers is different at the a= 0.05 significance level?
The appropriate hypothesis test is a two-sample t-test for independent samples.
The appropriate hypothesis test in this scenario is a two-sample t-test for independent samples. Since the population standard deviations are known, we can use the Z-test instead.
The test statistic can be calculated using the formula:
t = (x1 - x2) / sqrt((s1^2 / n1) + (s2^2 / n2))
Where:
x1 and x2 are the sample means for Manufacturer A and Manufacturer B, respectively.
s1 and s2 are the population standard deviations for Manufacturer A and Manufacturer B, respectively.
n1 and n2 are the sample sizes for Manufacturer A and Manufacturer B, respectively.
Plugging in the given values:
x1 = 179, x2 = 178, s1 = 1, s2 = 5, n1 = n2 = 108
t = (179 - 178) / sqrt((1^2 / 108) + (5^2 / 108))
t = 1 / sqrt(0.00926 + 0.0463)
t ≈ 1 / sqrt(0.05556)
t ≈ 1 / 0.2357
t ≈ 4.241
To determine whether there is sufficient evidence to support the claim that the voltage of the batteries made by the two manufacturers is different, we compare the calculated t-value to the critical value from the t-distribution at the desired significance level (0.05).
The decision depends on the degrees of freedom for the test, which is calculated as (n1 + n2 - 2) = (108 + 108 - 2) = 214.
Using a t-table or statistical software, we find that the critical value for a two-tailed test with a significance level of 0.05 and 214 degrees of freedom is approximately ±1.972.
Since the calculated t-value of 4.241 exceeds the critical value of 1.972, we reject the null hypothesis and conclude that there is sufficient evidence to support the claim that the voltage of the batteries made by the two manufacturers is different at the 0.05 significance level.
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In a recent survey, three out of every five students said they would prefer going to a water park for the class trip.
If 105 students were surveyed, how many can be expected to prefer the water park?
O A 21
OB. 35
O c. 63
O D. 70
E. 103
Answer:
the answer is d
Step-by-step explanation:
Just multiply and divide
What is probability?
the quality or state of being probable; the extent to which something is likely to happen or be the case
We have,
Surveyed student = 105
Students would prefer to going to a water park= 3/5
According to question
students who expected to prefer the water park
= 105 × 3/5
= 21×5×3/5
= 21×3
= 63
Hence, students who expected to prefer the water park is 63
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Choose if simple or compound. If compound which type: *Conjunction *Disjunction *Conditional *Biconditional a. Twilight is my favorite time to set on the porch (simple or compound) b. I will get coffee if and only if I want to stay awake. c. Lemons are yellow and limes are green.
We can classify them as -
Twilight is my favorite time to set on the porch : Simple.I will get coffee if and only if I want to stay awake : Conditional.Lemons are yellow and limes are green : Conjunction.What are the types of propositional logics?There are six primary statement forms in Propositional Logic -
SimpleConjunctionDisjunctionConditionalBiconditionalNegationGiven are the statements as -
Twilight is my favorite time to set on the porch.I will get coffee if and only if I want to stay awake. Lemons are yellow and limes are green.We can classify them as -
Twilight is my favorite time to set on the porch : Simple.I will get coffee if and only if I want to stay awake : Conditional.Lemons are yellow and limes are green : Conjunction.Therefore, we can classify them as -
Twilight is my favorite time to set on the porch : Simple.I will get coffee if and only if I want to stay awake : Conditional.Lemons are yellow and limes are green : Conjunction.To solve more questions on propositional logics, visit the link below-
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Which statement best describes the function?
O A. The function is increasing when x < 0.
B. The function is decreasing when x > 0.
C. The function is never increasing.
D. The function is always increasing.
Answer:
D. The function is always ingcreasing
Find the unknown coordinate so the line through the
points has the given slope
Answer:
#1 (0,-4)
#2 (5,0)
#3 (3,1)
Step-by-step explanation:
#1. (-3, 2) (0, y) slope = -2
slope = rise/run therefore slope = -2/1 or down 2 and over 1
so from -3 to 0 you are going over 3 units (or 3 times) Therefore to find y at x=0, you have to move three steps, or 3 times -2 = -6 so 2-6 = -4
so y intercept (b) = -4 0r (0,-4)
#2 (-7,-4) (x,0) slope (m) = 1/3 -7+12=5 x=5
#3 (4,-3) (x, 1) slope (m) = -4 (4/-1) Moving one unit in slope means
-3=4=1 for Y and 4-1=3 for X therefore the point is (3, 1)
Solve the system by elimination. Explain the steps you took to find the answer.
-2x + 2y + 3z = 0
-2x - y + z = -3
2x + 3y + 3z = 5
By using the elimination method, the solutions to this system of three linear equations include the following:
x = 1.
y = 1.
z = 0.
How to solve these system of linear equations?In order to determine the solutions to a system of three linear equations, we would have to evaluate and eliminate each of the variables one after the other, especially by selecting a pair of linear equations at each step and then applying the elimination method.
Given the following system of linear equations:
-2x + 2y + 3z = 0 .........equation 1.
-2x - y + z = -3 .........equation 2.
2x + 3y + 3z = 5 .........equation 3.
From equation 1 and equation 3, we would eliminate x as follows:
-2x + 2y + 3z = 0
2x + 3y + 3z = 5__
5y + 6z = 5 .........equation 4.
Next, we would pick a different pair of linear equations to eliminate x:
-2x + 2y + 3z = 0
-2x - y + z = -3___
3y + 2z = 3 ........equation 5.
From equation 4 and equation 5, we would eliminate z to get the value of y:
(3y + 2z = 3) × 3 ⇒ 9y + 6z = 9
9y + 6z = 9
5y + 6z = 5
4y = 4
y = 4/4
y = 1.
For the value of z, we have:
3y + 2z = 3
3(1) + 2z = 3
2z = 3 - 3
z = 0
For the value of x, we have:
-2x + 2y + 3z = 0
-2x + 2(1) + 3(0) = 0
-2x + 2 = 0
-2x = -2
x = 2/2
x = 1.
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What's the domain and range?
Answer:
Domain is [-6, ∞)
Range [2, 7]
Step-by-step explanation:
[] Domain = x coordinate values
[] Range = y coordinate values
Domain
Our x values start at -6 and go on forever towards positive infinity. This can be written as [-6, ∞)
- What is the [ for? It means that there is a point there and not a ray
Range
Our y values start at 7 and end at 2. Since the ray is straight on the value of 2 and not going up or down, we can write this as [2, 7]
- What are the ['s for? It means that there is a point on both ends the value doesn't go up/down more than the value written
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
Given the function f(x) = 4 - 2x, find f(3r - 1).
Answer:
6 - 6r
Step-by-step explanation:
we just plug in 3r - 1 instead of x
f(3r - 1) = 4 - 2(3r - 1)
= 4 - 6r + 2
= 6 - 6r
Nine times the sum of nine and a number is -25. What is the number
Answer:
9(9 + x) = -25
x = 6.22222 repeating
Step-by-step explanation:
First, we have to distribute. 9 times 9 = 81 and 9 times x = 9x. The equation now becomes 81 + 9x = -25.
Second, we have to get the coefficient alone. Since the opposite of positive 81 is negative 81, we subtract it to get 0. Since we did that to one side we have to do it to the other. -25 - (-81) = 56. Now we have 9x = 56.
Third, we have to get the variable by itself. To do that we divide 9 by 9 to get 0 and that gets the variable alone. Since we did that to one side we have to do it to the other. 56 divided by 9 = 6.222 with the 2 repeating over 8 times.
6(x + 8) = 5(x-4) What is the answer
Answer:
x = −68
Step-by-step explanation:
make me brainliest please !! <3
Answer:
x = -68
Step-by-step explanation:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation: 6*(x+8)-(5*(x-4))=0
(6 • (x + 8)) - 5 • (x - 4) = 0
6 • (x + 8) - 5 • (x - 4) = 0
x + 68 = 0
Solve: x+68 = 0
Subtract 68 from both sides of the equation: x = -68
I hope this helps! Please mark this as braiinlest.
Thanks!
Find the distance between the points P and Q shown.
The distance between points P and Q is √73
How to find the distance between the two points?First, remember that the distance between two points whose coordinates are (a, b) and (c, d) is given by:
distance = √( (a - c)² + (b - d)²)
Here we can see that the coordinates of the two shown points are:
P = (-3, 2)
Q = (5, -1)
Replacing that in the distance formula we will get:
distance = √( (-3 - 5)² + (2 + 1)²)
distance = √( (-8)² + (3)²)
distance = √73
So the correct option is the third one.
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The mean of the heights of three buildings A,B and C is 14.2m. The mean of the heights of five buildings A,B,C, D and E is 14.8m. Find the mean of the heights of the buildings D and E.
========================================================
Work Shown:
s = sum of the heights of buildings A,B,C
s/3 = mean of the heights of buildings A,B,C
s/3 = 14.2
s = 3*14.2
s = 42.6
The buildings A,B,C have their heights add up to 42.6
--------------
r = sum of the heights of buildings A,B,C,D,E
r/5 = mean of the heights of buildings A,B,C,D,E
r/5 = 14.8
r = 5*14.8
r = 74
--------------
r-s = (sum of heights of A,B,C,D,E)-(sum of heights of A,B,C)
r-s = sum of the heights of buildings D and E
r-s = 74-42.6
r-s = 31.4
(r-s)/2 = mean height of buildings D and E
(r-s)/2 = 31.4/2
(r-s)/2 = 15.7 meters is the average height of buildings D and E.
Which statement is true about the graphed function
identify the constants in the following
really need help I don't know how to do this can someone explain it to me please??
C=1,9 and d=7,-7 find the midpoint of CD
Answer:
The midpoint of CD is (4, 1).
Answer:
4,1
Step-by-step explanation:
How do I find the value
A = 139°
B = 139°
You can see A and B are coefficients of each other, which means they have the same angle because they are opposite each other on the straight line. just like the two 41° angles are.
The angle around a point always add up to 360°, so add the 41° angles.
41 + 41 = 82°
Then minus this by 360°.
360 - 82 = 278°
And to work out one angle, which gives you the angle for both, divide 278 by two.
278 ÷ 2 = 139°
Both A and B have an angle of 139°
Example:
To find the value of two intersecting lines, you need to know the equations of both lines. Then, you can set the equations equal to each other and solve for the variable x. This will give you the x-coordinate of the point where the lines intersect. To find the y-coordinate, you can plug the value of x into either equation and solve for y. For example, if one line is y = 3x - 5 and another line is y = -2x + 7, then you can set 3x - 5 = -2x + 7 and solve for x:
3x - 5 = -2x + 7
5x = 12
x = 12/5
Then, plug x = 12/5 into either equation and solve for y:
y = 3(12/5) - 5
y = 36/5 - 25/5
y = 11/5
Therefore, the point of intersection is (12/5, 11/5).
If one of the lines has a given angle, such as 41 degrees, then you can use trigonometry to find its equation. For example, if one line passes through the origin and has an angle of 41 degrees with the positive x-axis, then you can use the slope formula to find its equation:
slope = tan(41 degrees) ≈ 0.87
y = mx + b
y = 0.87x + 0
Then, you can use the same method as before to find the point of intersection with another line.
_______________________________________________________
The answer is 139 degrees, using the method I gave.
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If p is true and q is false, what is the truth value of p and q?
a. true b. false c. 0 d. 1
Answer:
i think it will be 0 .....
Find x in the given figure.
If the two angles are complementary, find the measure of each of angle. I am having trouble decoding this problem in it it says 7f and 2f what is the formula for this problem
Answer:
f=10
Step-by-step explanation:
I don't know a formula for this but I can see that <CRE is a 90° angle so 7f+2f=90 and if f=10 7f=70 and 2f=20 which fits
The measure of angle of each is 70° and 20°.
What are Angles?Angles are the figure formed by the intersection of two lines or rays by sharing a common point. This point is called the vertex of the angle.
Angles are usually measured in degrees or radians.
The given angles are complementary.
That is, ∠CRE is complementary, which means the angle is 90 degrees.
∠CRT + ∠TRE = 90°
(7f)° + (2f)° = 90°
9f = 90°
f = 90 / 9
f = 10
Hence ∠CRT = (7f)° = 70°
∠TRE = (2f)° = 20°
Hence the measure of each of the angle is 70° and 20°.
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