Answer:
24
Step-by-step explanation:
4m = 4 * m = 4 * 6 = 24
What is the value of x in the equation -X = 3 - 4x + 6?
0-9
0-3
03
09
Answer:
x=3
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
I took the test!
Explain how to determine the solutions to a quadratic equation, graphically.
Answer:
In a nutshell, you have to graph the parabola. Where the parabola intersects the x-axis is the solutions to the quadratic equation.
Which point is located at (4, -2)?
y
5
ТА
4
3
2+
1
2 3
Х
-5 -4 -3 -2 -11
-2
4 5
B
-4
D
b
Answer:
Point B of 4the quertant
Find the median of the distribution
Frequences
Mark
0,1,2,3,4,5
Answer:
2.5
Step-by-step explanation:
The median is the middle value of the data set. If there is no exact middle value then it is the average of the 2 values either side of the middle.
0 , 1 , 2 , 3 , 4 , 5
↑ middle of data
Thus median = [tex]\frac{2+3}{2}[/tex] = [tex]\frac{5}{2}[/tex] = 2.5
The half-life of a certain tranquilizer in the bloodstream is 47 hours. How long will it take for the drug to decay to 93% of the original dosage? Use the exponential decay model, Upper A equals Upper A 0 e Superscript kt, to solve.
Answer:
It will take 4.84 hours for the drug to decay to 93% of the original dosage.
Step-by-step explanation:
We are given that the half-life of a certain tranquilizer in the bloodstream is 47 hours.
The given exponential model is: [tex]A = A_0 e^{kt}[/tex]
Now, we know that A becomes half after 47 hours which means that;
[tex]A = 0.5 A_0[/tex]
Using this in the above equation we get;
[tex]A = A_0 e^{kt}[/tex]
[tex]0.5 A_0 = A_0 e^{(k\times 47)}[/tex] where t = 47 hours
[tex]\frac{0.5 A_0}{A_0} = e^{(47k)}[/tex]
[tex]0.5 = e^{47k}[/tex]
Taking log on both sides we get;
[tex]ln(0.5) = ln(e^{47k})[/tex]
[tex]ln(0.5) =47k[/tex]
[tex]k = \frac{ln(0.5)}{47}[/tex]
k = -0.015
Now, the time it will take for the drug to decay to 93% of the original dosage is given by;
[tex]0.93 = e^{kt}[/tex] where t is the required time
[tex]0.93 = e^{(-0.015 \times t)}[/tex]
Taking log on both sides we get;
[tex]ln(0.93) = ln(e^{-0.015t})[/tex]
[tex]ln(0.93) =-0.015t[/tex]
[tex]t = \frac{ln(0.93)}{-0.015}[/tex]
t = 4.84 hours
Hence, it will take 4.84 hours for the drug to decay to 93% of the original dosage.
Help me !!! please 50 points!!
A system of equations is shown below: 1. Equation A: 4c = d − 8 Equation B: c = 5d + 8 Which of the following steps should be performed to eliminate variable d first? (5 points)
Multiply equation B by 4. Multiply equation A by −5. Multiply equation A by 4. Multiply equation B by 5. 2 . A system of equations is shown below: n = 3m + 7 n − 2m = 1 What is the solution, in the form (m, n), to the system of equations? (5 points)
(3, 7) (1, 8) (−3, −2) (−6, −11) 3. A system of two equations is shown below: Equation C: a = 3b + 6 Equation D: a = 7b − 1 What value of a can be substituted into equation D to solve the system of equations? (5 points)
Answer:
the first step to eliminate d is to multiply equation B by 5
second :(m,n) (-6,-11)
value of a can be substituted into equation D to solve the system of equations is 7b-1
Step-by-step explanation:
first equation:
4c=d-8 or 4c-d=-8
c=5d+8 or c-5d=8
so the first step to eliminate d is to multiply equation B by 5
second equation :
n=3m+7 or n-3m=7
n-2m=1
n-3m=7
solve :
1-eliminate n by subtracting two equation : : n-2m-(n-3m)=1-7
-2m+3m=-6
m=-6
substitute m: n-3(-6)=7 , then n+18=7
n=7-18=-11
third :
a=3b+6 or a-3b=6
a=7b-1
find a
a-3b=6
value of a can be substituted into equation D to solve the system of equations is 7b-1
Each unit on the coordinate grid represents 1 yard. The rectangular pool and triangular hot tub shown are both in need of covers. How much total material is needed to cover both? square yards
Answer:
29 square yards
Step-by-step explanation:
see attachment for the graph
Vertices of rectangular pool are A(3,2),B(7,8),C (4,10), and D (0,4).
AB=[tex]\sqrt{(7-3)^{2}+(8-2)^{2}}= \sqrt{16+36}=\sqrt{52}[/tex] yard=CD
BC= [tex]\sqrt{(7-4)^{2}+(8-10)^{2}}=\sqrt{9+4}=\sqrt{13}[/tex]yard=DA
In order to find the area of rectangular pool =Length × Breadth
=√52 ×√13=13×2=26 sq. yard
Vertices of triangle given are: P(5,2),Q(7,2) and R(7,5).
PQ= 2 units, QR= 3 units
Area of right triangle PQR=1/2 ×PQ×PR
=1/2×2×3= 3 sq. yards
Next is to find total material needed to cover( that includes bot rectangular pool and triangular hot tub)
= Area of rectangle + Area of right triangle
=26+3=29 square yards
Answer:
29
Step-by-step explanation:
I just did my homework
hi can you help me i can’t move forward if i skip this question.
cot(45-A)=tan2A+ sec2A
Answer:
See picture.
Step-by-step explanation:
A polynomial is factored using algebra tiles. An algebra tile configuration. 0 tiles are in the Factor 1 spot and 0 tiles are in the Factor 2 spot. 15 tiles are in the Product spot in 3 columns with 5 rows: 1 is labeled + x squared, 2 are labeled + x, the 4 tiles below + x squared are labeled negative x, and the 8 tiles below the + x tiles are labeled negative. Which polynomial was factored? x2 – 2x – 8 x2 + 2x – 8 x2 – 2x – 4 x2 + 2x – 4
Answer:
x² - 2x - 8
Step-by-step explanation:
Algebra tiles are tiles used to represent variables or numbers and are rectangular or square shaped.
1 is labeled + x squared, this gives x²
2 are labeled + x, this gives +x × 2 = +2x
4 tiles below + x squared are labeled negative x, this gives - x × 4 = - 4x
8 tiles below the + x tiles are labeled negative, this gives -1 × 8 = -8
Therefore to get the polynomial that was factored, we add all the terms. This gives :
+x² + (+ 2x) + (-4x) + (-8) = x² + 2x - 4x - 8 = x² - 2x - 8
Answer:
The answer is A, and if edge is being weird the answer is x^2-2x-8, Have fun dreamers!
Step-by-step explanation:
Use the given information to draw a box-and-whisker plot of the data set
Minimum – 28
Maximum – 54
Lower Quartile – 32
Upper Quartile – 40
Answer:
The box-and-whisker plot of this distribution is presented in the attached image to this solution.
Step-by-step explanation:
A box plot gives a visual representation of the distribution of the data, showing where most values lie and those values that greatly differ from the rest, called outliers.
A box and whiskers plot shows 5 major information about the distribution of data. It shows:
- The maximum variable.
- The minimum variable.
- The Median.
- The first quartile.
- The third quartile.
Further info such as the range and Inter quartile range can then be obtained from this 5-number summary.
The elements of the box plot are described thus;
The bottom side of the box represents the first quartile, and the top side, the third quartile. Therefore, the width of the central box represents the inter-quartile range.
The horizontal line inside the box is the median.
The lines extending from the box reach out to the minimum and the maximum values in the data set, as long as these values are not outliers. The ends of the whiskers are marked by two shorter horizontal lines.
Variables in the dataset, higher than Q3+(1.5×IQR) or lower than Q1-(1.5×IQR) are considered outliers and are usually shown using dots above the top whisker or below the bottom whisker.
The required boxplot for this question is given in the attached image to this solution.
The median for the boxplot isn't provided, but it was assumed to be midway between the first and third quartile.
Hope this Helps!!!
A magazine has 96 pages. There are ads on 75% of the pages. How many pages don't have ads?
Hey there! :)
Answer:
24 pages.
Step-by-step explanation:
Calculate how many pages 75% of 96 is:
96 × 0.75 = 72 pages.
Find how many pages do not have ads by subtracting the amount that have ads from the total:
96 - 72 = 24 pages.
Therefore, 1/4 of 96 or 24 pages do not have ads.
What is the result of subtracting the second equation from the first? 8x-4y=-4 -3x+4y=5
━━━━━━━☆☆━━━━━━━
▹ Answer
(x, y) = (14/5, 87/20)
▹ Step-by-Step Explanation
8x - 4y = -4 - 3x + 4y = 5
8x - 4y = 5
-4 - 3x + 4y = 5
8x - 4y = 5
-3x + 4y = 9
5x = 14
x = 14/5
-3 * 14/5 + 4y = 9
y = 87/20
(x, y) = (14/5, 87/20)
Hope this helps!
- CloutAnswers ❁
Brainliest is greatly appreciated!
━━━━━━━☆☆━━━━━━━
Answer:
11x−8y=−9
Step-by-step explanation:
khan
Clara would like to buy a toy for her baby sister that sells for
$12.49. How much will the toy cost after 13% tax? (Round to the nearest
cent)
Of the four choices given, which two, when written as a system, have a solution of (–4, 5)? A 2-column table with 4 rows. Column 1 is labeled x with entries negative 1, 2, 3, 5. Column 2 is labeled y with entries 2, negative 1, negative 2, negative 4. 2 x + y = negative 3 Negative 2 x + y = negative 3 A 2-column table with 4 rows. Column 1 is labeled x with entries negative 1, 2, 3, 7. Column 2 is labeled y with entries 0, negative 3, negative 4, negative 8. 2 x + y = negative 3 and A 2-column table with 4 rows. Column 1 is labeled x with entries negative 1, 2, 3, 5. Column 2 is labeled y with entries 2, negative 1, negative 2, negative 4. Negative 2 x + y = negative 3 and A 2-column table with 4 rows. Column 1 is labeled x with entries negative 1, 2, 3, 5. Column 2 is labeled y with entries 2, negative 1, negative 2, negative 4. 2 x + y = negative 3 and A 2-column table with 4 rows. Column 1 is labeled x with entries negative 1, 2, 3, 7. Column 2 is labeled y with entries 0, negative 3, negative 4, negative 8. Negative 2 x + y = negative 3 and A 2-column table with 4 rows. Column 1 is labeled x with entries negative 1, 2, 3, 7. Column 2 is labeled y with entries 0, negative 3, negative 4, negative 8.
Answer:
The answer is a.
Step-by-step explanation:
Hope this helps!
Answer:
It's A)
Step-by-step explanation:
Angles that measure between 0 and 90 degrees are called_?
Answer:
Acute angles.
Step-by-step explanation:
Acute angles are from 0-90 degrees.
Hope this helps :)
Answer:
Acute angles
Step-by-step explanation:
Acute angles are measured between 0 and 90 degrees.
Abigail wants to make a tapestry in the shape of a parallelogram that is 24 inches across the bottom and 36 inches tall. If she pieces smaller similar parallelograms that are 2 inches at the base and 3 inches tall, how many will she need to make the tapestry?
Answer:
144
Step-by-step explanation:
Abigail wants to produce a tapestry that will be in the shape of a parallelogram
The tapestry is 24 inches across the bottom and 36 inches tall
She pieces smaller simlar parallelograms that are 2 inches wide and 3 inches tall
The first step is to find the area of the whole tapestry
Area = base × height
Base= 24 inches
Height= 36 inches
Area= 24×36
= 864 square inches
The next step is calculate the area of the smaller pieces
Area= base × height
Base= 2 inches
Height= 3 inches
Area= 2×3
= 6 square inches
Therefore, the value needed to produce the tapestry can be calculated by dividing the area of the whole tapestry by the area of the smaller pieces
= 864/6
= 144
Hence Abigail will need 144 smaller similar parallelograms to make the tapestry.
Answer:
144
Step-by-step explanation:
Brian set his compass equal to the radius of circle C and drew two circles centered at points A and B on circle C. He labeled the points of intersection of the two circles as shown. To complete his construction, Brian only needs to use his straightedge to draw some chords of circle C. Which figures could Brian be constructing? equilateral triangle MNQ inscribed in circle C equilateral triangle ANP inscribed in circle C regular hexagon AMNBPQ inscribed in circle C square MNPQ inscribed in circle C square ANBQ inscribed in circle C
Answer:
equilateral triangle ANP inscribed in circle C
regular hexagon AMNBPQ inscribed in circle C
Step-by-step explanation:
By looking through our choices, we can eliminate which choices could be wrong and which choices could be right.
Δ MNQ does form a triangle, however, it DOES NOT form a equilateral triangle.
Δ ANP does form a triangle and it is ALSO an equilateral triangle.
Hexagon AMNBPQ does form a hexagon and it is ALSO a regular polygon as we can see all the sides and angles within the polygon are congruent to one another.
MNPQ does form a quadrilateral, however, it DOES NOT form a square. It is instead a rectangle.
ANBQ does form a quadrilateral, however, it DOES NOT form a square. It is instead a rectangle.
By looking through our observations, we can conclude that Δ ANP and hexagon AMNBPQ are the correct choices.
- 2022 Edmentum
The equilateral triangle ANP inscribed in circle C and the regular hexagon AMNBPQ inscribed in circle C. Then the correct options are B and C.
What is Geometry?It deals with the size of geometry, region, and density of the different forms both 2D and 3D.
Brian set his compass equal to the radius of circle C and drew two circles centered at points A and B on circle C.
He labeled the points of intersection of the two circles as shown.
The equilateral triangle ANP inscribed in circle C and the regular hexagon AMNBPQ inscribed in circle C.
Then the correct options are B and C.
The complete question is attached below.
More about the geometry link is given below.
https://brainly.com/question/7558603
#SPJ5
What is the distance from point (-5,-4) to (9,2)?
Answer:
radical 232
Step-by-step explanation:
14^2+6^2=x^2
196+36= 232
radical 232
Answer: Distance is 15.2
Step-by-step explanation:
[tex]d = √((x2-x1)2 + (y2-y1)2)[/tex]
[tex](x2-x1) = (9 - -5) = 14[/tex]
[tex](y2-y1) = (2 - -4) = 6[/tex]
[tex](14)2 + (6)2 = 196 + 36 = 232[/tex]
[tex]\sqrt{232} =15.2315[/tex]
round to the nearest 10th
A skateboard ramp has a slope of 5/6. What is the measure of the angle the ramp forms with the ground to the nearest degree
Answer:
39.8°
Step-by-step explanation:
We know slope is rise over run. That would mean our right triangle would have a horizontal leg of 6 and a vertical leg of 5. From there we use tan∅ to help solve ∅:
tan∅ = 5/6
∅ = tan⁻¹(5/6)
∅ = 39.8056
Need help solving. Prefer you show each step in solving.
Answer:
55
Step-by-step explanation:
For PQ and RS to be parallel, the two degrees must be equal.
3x - 65 = 2x - 10
(3x - 65) + 65 = (2x - 10) + 65
3x = 2x + 55
(3x) - 2x = (2x + 55) - 2x
x = 55
Approximately how many seconds would it take for the Mississippi River( 16,790 cubic meters per second) to fill the volume of the Gulf of Mexico(2,434,000,000,000,000)? Choice A : 1 *10^9 Choice B : 1* 10^10 Choice C : 1 * 10^11
Answer:
1 * 10^11
Step-by-step explanation:
Take the gulf of mexico and divide by the rate to get the number of seconds
2,434,000,000,000,000 / 16790
Change each to scientific notation
2 * 10 ^15/ 1.6 *10^ 4
Rounding
2 * 10^15 / 2 * 10^4
Dividing the numbers 2/2 =1
Dividing the exponents means subtracting the powers = 10 ^(15-4) = 10 ^1
1 * 10^11
John is standing at the point (-4,-8) and his friend Victor is standing at the point (-4,12). Find the distance between them. A. 20 units
B. -20 units
C. 28 units
D. -28 units
Answer:
20 unitssolution,
Let the points be A and B
A(-4,-8)--->(X1,y1)
B(-4,12)---->(x2,y2)
Now,
[tex]ab = \sqrt{ {(x2 - x1)}^{2} + {(y2 - y1)}^{2} } \\ \: \: \: = \sqrt{ {( - 4 - ( - 4)}^{2} + 12 - ( - 8) ^{2} } \\ \: \: \: \: = \sqrt{ {( - 4 + 4)}^{2} + {(12 + 8)}^{2} } \\ = \: \: \: \: \sqrt{ {(0)}^{2} + {(20)}^{2} } \\ \: \: \: \: = \sqrt{0 + 400} \\ \: \: \: = \sqrt{400} \\ \: \: = \sqrt{ {(20)}^{2} } \\ \: \: = 20 \: units[/tex]
Hope this helps..
Good luck on your assignment...
please help thanks !
Answer:
point slope form: y-3=[tex]-\frac{3}5}[/tex](x+2)
slope-intercept form: y=[tex]-\frac{3}{5}[/tex]x+[tex]\frac{9}{5}[/tex]
Step-by-step explanation:
so to find point-slope form, you first have to find the slope of the line
--slope =[tex]\frac{y_{2}-y_{1} }{x_{2} -x_{1} }[/tex]=[tex]\frac{0-3}{3+2} =-\frac{3}{5}[/tex] (you have to use the two points shown: (-2,3) and (3,0) to plug in for y1, y2, x1, and x2 to find the slope.)
so your slope is [tex]-\frac{3}{5}[/tex].
Now all you have to do is use one of the points (-2,3) to sub in for y1 and x1 in the point-slope form equation.
Therefore, you get y-3=[tex]-\frac{3}{5}[/tex](x+2) for point-slope form.
Now for slope-intercept form, you already have the slope because you found it to complete the equation for point slope form
slope = [tex]-\frac{3}{5}[/tex]
Now slope intercept form is y=mx+b, where m is the slope and b is the y-intercept.
So, far we have y=[tex]-\frac{3}{5}[/tex]x+b
the easiet point to use for the x and y values is (3,0)
so, lets substitute: 0=[tex]-\frac{3}{5}[/tex](3)+b, which becomes 0=[tex]-\frac{9}{5}[/tex]+b
add [tex]-\frac{9}{5}[/tex] to both sides to get b=[tex]\frac{9}{5}[/tex]
Now you have both the slope and the y-intercept so you can now write the line in slope-intercept form.
You get [tex]y=-\frac{3}{5}x +\frac{9}{5}[/tex].
can someone help me answer this
Answer:
A
Step-by-step explanation:
Diana serves 8 kg of fried rice for 12 persons. How many persons can eat 20 kg of
fried rice?
Answer:
30 persons
Step-by-step explanation:
Let's create a proportion using the following setup:
persons/rice=persons/rice
We know that 12 persons can eat 8 kilograms of fried rice.
12 persons/ 8 kg of rice= persons/rice
We also know that x (unknown) persons can eat 20 kilograms of fried rice.
12 persons/ 8 kg of rice= x persons/ 20 kg of rice
12/8=x/20
x is being divided by 20. The inverse of division is multiplication. Multiply both sides of the equation by 20.
20(12/8)=(x/20)20
20*12/8=x
20*1.5=x
30=x
30 persons can eat 20 kilograms of fried rice.
Answer:
30 people
Step-by-step explanation:
1) Set up a proportion, 8kg/12 = 20kg/x
2) Do cross multiplication to solve for x
3) x = 30 people
10. If there is a crossword that has four squares that need to be filed, how many possible four letter arrangements are there (assuming they do not have to make a real word)?
Answer:
See Explanation
Step-by-step explanation:
The question didn't specify if letter can be repeated or not;
I'll solve for both;
Given
Number of Letters = 26
Number of squared = 4
If Repetition is allowed;
The four squares can take any of the 26 letters in any order
The first letter can be any of 26; Same with the second, third and fourth letters;
Number of Arrangement = 26 * 26 * 26 * 26
Number of Arrangement = 26⁴
Number of Arrangement = 456976
If Repetition is not allowed;
The first square can be filled with any of the 26 letters;
The second can take any of (26 - 1) letters
The third can take any of (26 - 2) letters
The fourth can take any of (26 - 3) letters
Number of Arrangement = 26 * (26 - 1) * (26 - 2) * (26 - 3)
Number of Arrangement = 26 * 25 * 24 * 23
Number of Arrangement = 358800
Answer:
26!/22!
Step-by-step explanation:
I just took the quiz I got it right
Uma caixa na forma de um cubo tem medidas de arestas igual a 10,5 cm. O volume dessa caixa corresponde à: * 1 ponto a) 1157,625cm³ b) 1157,6cm³ c) 11,5627cm³ d) 115,7625cm³
Answer:
(A) [tex]1157,625$ cm^3[/tex]
Step-by-step explanation:
s = 10,5 cm.
Volume do cubo = [tex]s^3[/tex]
[tex]=10,5^3\\=1157,625$ cm^3[/tex]
O volume do cubo é [tex]1157,625$ cm^3[/tex]
Solve for f. -11f=7(1-2f)+5
Answer:
4
Step-by-step explanation:
Our equation is -11f= 7*(1-2f)+5
-11f=7*(1-2f)+5 7*(1-2f)+5+11f=07-14f+5+11f=012-3f=0f=12/4f=4
Which is the graph of f(x)=2(3) to the x power?
Answer:
Use a graphing calc.
Step-by-step explanation: