Answer:
5.44 = y
Step-by-step explanation:
KLM = KLN + NLK
134 = 47+ 16y
Subtract 47 from each side
134 - 47 = 47+16y - 47
87 = 16y
Divide each side by 16
87/16 = 16y/16
5.4375 = y
Round to two decimal places
5.44 = y
Simplify.
6m +7n +5т — Зm
Answer:
3m +7n +5т
Step-by-step explanation:
6m +7n +5т — Зm
Combine like terms
3m +7n +5т
is 2 the solution of 4x+2=x+8
Please help!!!! 7 - 2x if x = -4 Thank you in advance
The x is a placeholder for a number. Think of x like a box and inside the box will go a number. In this case, -4 will replace x
7 - 2x = 7 - 2(-4) = 7 + 8 = 15
Answer: 15Find the measure of one interior angle of a regular 20-gon.
Answer: 162°
Step-by-step explanation:
Using exterior angle methods,
sum total of exterior angle of polygon = ³⁶⁰/ₙ , where n is the size of the polygon. = ³⁶⁰/₂₀
One exterior angle = 18°.
Now the interior angle = 180° - 18° ( angle on a straight line )
Therefore, the measure of the interior angle = 162°.
Not , Other methods can still be applied.
We____ this movie a lot so we also ____ the book. a) bring- liked b)likes- brought c)liked- buy d) liked- brought.
Answer:
Your welcome!Step-by-step explanation:
liked- brought
The students of a certain college were asked to choose which of six movie genres was their favorite. The pie chart below shows the distribution of the students’ answers. If there are 18,500 students at the college, how many chose Drama , Other, or Comedy ?
Answer:
4255 students choose Drama
4995 students choose Other
3700 students choose Comedy
Step-by-step explanation:
18500 x _% =
Ex: 18500 x 23% = 4255.
i need help with this problem
Answer:
367.57 in³
Step-by-step explanation:
The formula for the volume of a cylinder is [tex]V = h\pi r^2[/tex], where V is the volume, h is the height, and r is the radius. The picture shows you that r = 3 in and h = 13 in.
Plug these into the formula to find the answer:
[tex]V = (13)\pi 3^2=(13)(9)\pi =117\pi => 367.566[/tex]
Round that to the nearest hundredth to get 367.57. The units for the answer should be in cubic inches.
For the surface area, imagine laying the cylinder out. You'd see two circles, for the top and bottom, and then a rectangle, which is the side. The formula is A=2πrh+2πr². Try to do this yourself! You only need to plug in the values: r = 3 in and h = 13 in.
Find the midpoint of the segment between the points (15,−9) and (−2,−18) A. (172,92) B. (13,−27) C. (132,−272) D. (−13,27)
Answer:
from my calculation, the answer is B
The midpoint of the segment between the points (15,−9) and (−2,−18) will be (−13/2, −27/2). Then the correct option is C.
What is the midpoint of line segment AB?Let C be the mid-point of the line segment AB.
A = (x₁, y₁)
B = (x₂, y₂)
C = (x, y)
Then the midpoint will be
x = (x₁ + x₂) / 2
y = (y₁ + y₂) / 2
The midpoint of the segment between the points (15,−9) and (−2,−18) will be
x = (15 – 2) / 2
x = –13 / 2
y = (–9 – 18) / 2
y = –27/2
Then the correct option is C.
More about the midpoint of line segment AB link is given below.
https://brainly.com/question/17410964
#SPJ5
suppose we want to choose 5 objects, without replacement, from 16 distinct objects.
Question:
Suppose we want to choose 5 objects, without replacement, from 16 distinct objects.
A) How many ways can this be done, if the order of the choices is relevant?
B) How many ways can this be done, if the order of the choices is not relevant?
Answer:
A. 4368 ways
B. 524160 ways
Step-by-step explanation:
Given
[tex]Objects = 16[/tex]
[tex]Selection = 5[/tex]
Required
A & B
Solving (A)
Because the order of choice is irrelevant, this implies combination and it is calculated as follows;
[tex]^nC_r = \frac{n!}{(n-r)!r!}[/tex]
Where n = 16 and r = 5
[tex]^{16}C_5 = \frac{16!}{(16-5)!5!}[/tex]
[tex]^{16}C_5 = \frac{16!}{11!5!}[/tex]
[tex]^{16}C_5 = \frac{16 * 15 * 14 * 13 * 12 * 11!}{11!5!}[/tex]
[tex]^{16}C_5 = \frac{16 * 15 * 14 * 13 * 12}{5!}[/tex]
[tex]^{16}C_5 = \frac{16 * 15 * 14 * 13 * 12}{5 * 4 * 3 * 2 * 1}[/tex]
[tex]^{16}C_5 = \frac{524160}{120}[/tex]
[tex]^{16}C_5 = 4368\ ways[/tex]
Solving (B)
Because the order of choice is relevant, this implies permutation and it is calculated as follows;
[tex]^nP_r = \frac{n!}{(n-r)!}[/tex]
Where n = 16 and r = 5
[tex]^{16}P_5 = \frac{16!}{(16-5)!}[/tex]
[tex]^{16}P_5 = \frac{16!}{11!}[/tex]
[tex]^{16}P_5 = \frac{16 * 15 * 14 * 13 * 12 * 11!}{11!}[/tex]
[tex]^{16}P_5 = 16 * 15 * 14 * 13 * 12[/tex]
[tex]^{16}P_5 = 524160\ ways[/tex]
the area of a circle with (a) a radius of 9.2 centimeters and (b) a diameter of 50.5 inches.
Answer:
(a) 57.8 cm²
(b) 158.7 in²
Step-by-step explanation:
(a)
The area of a circle is denoted by A = 2πr, where r is the radius.
Here the radius is r = 9.2, so plug this in:
A = 2πr
A = 2π * 9.2 ≈ 57.8 cm²
(b)
The diameter is twice the radius, so since the diameter is 50.5 inches, the radius will be 50.5/2 = 25.25 inches.
Plug this into the formula:
A = 2πr
A = 2π * 25.25 ≈ 158.7 in²
~ an aesthetics lover
Question 2
Which set of coordinates could be points on the graph of a function?
A (-2,2), (1,1),(1,4),(2,5)
B (-1,1),(1,1),(2,2), (2,5)
C (-1,2), (0,1),(1,2), (2,5)
D (1.2). (1,3), (1,5),(1,6)
Step-by-step explanation:
I think no. C is the answer. Please let me know by comment I am wrong or right
Answer:
C
Step-by-step explanation:
A set of coordinates is a function if and only if one input does not map onto two or more different outputs.
In other words, given (x,y), x should each have one distinct y. If an x has 2 or more y, then the y must be the same value.
Choice A:
We see that it has the pairs (1,1) and (1,4). 1 maps onto both 1 and 4, so this is not a function.
Choice B:
Again, we see that it has the pairs (2,2) and (2,5). 2 maps onto both 2 and 5, so this also isn't a function.
Choice C:
In this set, no x are repeated. Thus, this is a function.
Choice D:
In this set, we have the x repeated four times, with 1 mapping onto 2, 3, 5, and 6. Thus, this is not a function.
So, our answer is C.
Why is 2 + (−3) equal to −1 HELP
Because it is 3 units to the left of 2 on a horizontal number line
Because it is 3 units to the right of 0 on a horizontal number line
Because it is 3 units to the left of 0 on a horizontal number line
Because it is 3 units to the right of 2 on a horizontal number line
Answer:
The answer is A
Its A.
Reasoning: Because I Took The Test
In a random sample of mobile devices, the mean repair cost was $ and the standard deviation was $. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a % confidence interval for the population mean. Interpret the results. The % confidence interval for the population mean is ( nothing, nothing). (Round to two decimal places as needed.)
Complete Question
In a random sample of
five mobile devices, the mean repair cost was $75.00 and the standard deviation was $11.50
Assume the population is normally distributed and use at-distribution to find the margin of error and construct a 95%
confidence interval for the population mean. Interpret the results.
Answer:
The margin of error is [tex]E = 10.1[/tex]
The 95% confidence interval is [tex]64.9 < \mu < 85.1[/tex]
Step-by-step explanation:
From the question we are told that
The sample mean is [tex]\= x = \$ 75.00[/tex]
The standard deviation is [tex]\sigma = \$ 11.50[/tex]
The sample size is n = 5
Given the that the confidence level is 95% then the level of significance is mathematically represented as
[tex]\alpha = 100 -95[/tex]
[tex]\alpha = 5\%[/tex]
[tex]\alpha = 0.05[/tex]
Next we obtain the critical value of [tex]\frac{ \alpha }{2}[/tex] from the normal distribution table, the value is
[tex]Z_{\frac{\alpha }{2} } = 1.96[/tex]
Generally the margin of error is mathematically represented as
[tex]E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{ \sqrt{n} }[/tex]
substituting values
[tex]E = 1.96* \frac{11.50 }{ \sqrt{5} }[/tex]
[tex]E = 10.1[/tex]
The 95% confidence interval is mathematically represented as
[tex]\= x - E < \mu < \= x + E[/tex]
substituting values
[tex]75 - 10.1< \mu < 75 + 10.1[/tex]
[tex]64.9 < \mu < 85.1[/tex]
Find the percent change from a stock that was worth $230 and is now $287
Answer:
24.78%
Step-by-step explanation:
Initial price = $230
Final price = $287
change in price = final price - initial price
= 287 - 230
= $57
Percent change
= (change in price / initial price) x 100%
= (57 / 230) x 100%
= 24.78%
find the complement of 32.5% *its percent not angle*
Answer:
9
Step-by-step explanation:
If sin(x) = 3/5, what is sin(2x)
====================================================
Explanation:
If sin(x) = 3/5, then cos(x) = 4/5 through the use of the trig identity
sin^2(x) + cos^2(x) = 1
This is assuming that x is in quadrant Q1.
Plug those values into the identity below and simplify.
sin(2x) = 2*sin(x)*cos(x)
sin(2x) = 2*(3/5)*(4/5)
sin(2x) = 24/25
Answer:
24/25
Step-by-step explanation:
Trig functions relate the angle of a triangle with the sides of that triangle (right triangle)
sin(x)= 3/5 (opposite/ hypotenuse) (25=9-x^2, using pythag. theorem, remaining side= 4)
now, cos(x)= 4/5
now, the double angle identity states:
sin2x= 2sinxcosx
so,
sin2x= 2 * (3/5) * (4/5) =
24/25
find the unknown angles
Answer: Hi!
Since this is a right triangle, we already know that one angle is 90 degrees. Since the angles of a triangle all add up to 180 degrees, and the two unknown angles will be equal, all we have to do is subtract 90 from 180 and then divide the difference by 2!
180 - 90 = 90
90 ÷ 2 = 45
The two missing angles are each 45 degrees.
(x = 45 and y = 45)
Make sure to put the degrees sign after your answers!
Hope this helps!
Answer:
45 degrees.
Step-by-step explanation:
All of the angles in a triangle is 180 degrees.
Knowing that we subtract 90 degrees, the right angle from 180 degrees.
180-90=90
Since both the angles are equal,
90/2=45
Hope this helps :)
Have a great day!
The following is a list of 5 measurements. 20,10,13,11,20 Suppose that these 5 measurements are respectively labeled.
Answer:
1190
Step-by-step explanation:
Here, you need to add the squares of the measurements.
20² + 10² + 13² + 11² + 20² =
= 400 + 100 + 169 + 121 + 400
= 1190
Factorise the following completely 6x(squared) + 11xy + 5y(squared)
Answer:
[tex] \boxed{\sf (x + y)(6x + 5y)} [/tex]
Step-by-step explanation:
Factor the following:
[tex] \sf \implies 6 {x}^{2} + 11xy + 5 {y}^{2} [/tex]
The coefficient of x² is 6 and the coefficient of y² is 5. The product of 6 and 5 is 30. The factors of 30 which sum to 11 are 5 and 6.
So,
[tex] \sf \implies 6 {x}^{2} + (6 + 5)xy + 5 {y}^{2} [/tex]
[tex] \sf \implies 6 {x}^{2} + 6xy + 5xy + 5 {y}^{2} [/tex]
[tex] \sf \implies 6x(x + y) + 5y(x + y)[/tex]
Factor (x + y) from 6x(x + y) + 5y(x + y):
[tex] \sf \implies (x + y)(6x + 5y)[/tex]
A roast requires 3 hours and 40 minutes in the oven to be cooked. In order to have the roast ready
to serve at 6:30 PM, it must be put into the oven at
Answer:
2:50 PM
Step-by-step explanation:
Step 1: State what is given
Roast takes 3 hours and 40 minutes or 220 minutes
Need the roast to be done by 6:30 PM
Step 2: Subtract 3 hours from 6:30
6:30 - 3:00
3:30 PM
Step 3: Subtract 40 minutes from 3:30
3:30 - 40
2:50 PM
Therefore the roast needs to be put into the oven at 2:50 PM
Which expression is equal to 8/11 A. 8 ÷ 11 B. 11 ÷ 8
Answer:
A
Explanation
8/11 = 8 ÷ 11
BRAINLIEST PLEASE
When Marissa started work, she was given two paid days of vacation. For each four month period she stays at the job, her vacation is increased by one day. How much vacation time will she have after working for 6.5 years? Clearly show your work.
The correct answer is 21.5 days
Explanation:
We know Marissa has two paid days of vacation plus 1 day for every four months she works. In this context, the first step is to find how much paid days of vacation she will have for working 6.5 years and add this to the 2 paid days of vacation she was given when she began to work. The steps are shown below:
1. Find the number of months in 6.5 by considering each year has 12 months and half year (0.5) is equivalent to 6 months
6 (number of years) x 12 months = 72 months
0.5 year = 6 months
72 months + 6 months = 78 months (Total of months in 6.5 years)
2. Divide the total of months into 4 considering every 4 months Marissa is given one paid day of vacation.
78 months ÷ 4 = 19.5 days (number of paid days of vacation for working 6.5 years)
Finally, add this result to the two paid days initially given 19.5 days + 2 days = 21.5 days
4-x/5+x+2/3=6 PLEASE HELP 5-10 MINUTES PLEEEEAAASEEEE
Answer:
x=5/3
Step-by-step explanation:
Formulas HW for algebra. First correct answer gets brainliest.
Answer:
T = Z + pr
Z + T = pr
Z/r + T/r = p
Answer:
p = Z/r + T/r
What is the scale factor of the triangles ABE & DBC ?
In other words, you'll use the SAS similarity property with 3/2 as the scale factor
=================================================
Explanation:
Choice A is not correct because we don't have enough info about all three pairs of sides.
Instead we'll go with SAS similarity. This is the idea where we'll use two pairs of sides to see if they are in the same proportion, and we'll also use the included angle between the two sides. The angles ABE and DBC are congruent as they are vertical angles. So that's where the "A" comes from in "SAS".
As for the S terms, we divide the corresponding sides like so
DB/AB = 9/6 = 3/2
BC/BE = 1.5/1 = 15/10 = 3/2
The scale factor as a fraction is 3/2, which converts to the decimal form 1.5
This says that triangle DBC has sides that are 3/2 = 1.5 times longer than corresponding sides in triangle ABE.
------------------
If you're curious how the sides correspond, then look at the ordering of ABE and DBC. The order is important when it comes to similar triangles.
AB and DB are the first two letters of ABE and DBC respectively. So we have AB pair up with DB.
Similarly, BE and BC pair up because they are the last two letters of ABE and DBC respectively.
We divide sides of DBC over sides of ABE to get the scale factor from ABE to DBC. The scale factor must be some result larger than 1 do indicate an enlargement is going on.
Math- Differentiation . Could you help me to solve this question?
Answer:
Step-by-step explanation:
Hello, first of all we can find a value for f(1)
[tex]xf(x)+f(x^2)=2 \\\\\text{So for x = 1, it gives}\\\\f(1)+f(1^2)=f(1)+f(1)=2f(1)=2\\\\<=> f(1) =1[/tex]
And we can get the derivative of the equation so.
[tex](uv)'=u'v+uv' \text{ and } \dfrac{df(x^2)}{dx}=2xf'(x^2) \text{ so we can write}\\\\f(x)+xf'(x)+2xf'(x^2)=0\\\\\text{And then, for x = 1}\\\\f(1)+f'(1)+2f'(1)=0\\\\<=> f(1)+3f'(1)=0\\\\<=> 3f'(1)=-f(1)=-1\\\\<=>\large \boxed{ f'(1)=-\dfrac{1}{3} }[/tex]
Thank you
please help asap!
a. if the input is -8, what is the output?
b. if the output was 21, what was the input?
Answer:
a. 45
b. -4
Step-by-step explanation:
f(x) = -6(-8) - 3
f(x) = 48 - 3 = 45
21 = -6x - 3
24 = -6x
-4 = x
Please Help multiple choice! Brainlest toooo babyyy
Answer:
C and D
Step-by-step explanation:
We want to find the equations where b=11 is a solution. Let's test each answer. choice. Plug 11 in for b and solve.
A. 2b= 211
2(11)=211
Multiply 2 and 11.
22≠211
22 does not equal 211, therefore this choice is not correct.
B. b+18=7
11+18=7
Add 11 and 18.
29 ≠ 7
29 does not equal 7, so this is not correct.
C. 77=7b
77=7(11)
Multiply 7 and 11.
77=77
77 does equal 77, so this is correct.
D. 9=b-2
9=11-2
Subtract 2 from 11.
9=9
9 equals 9, so this correct too.
E. 11=33/b
11=33/11
Divide 33 by 11.
11≠3
11 does not equal 3, so this is not the right choice.
b= 11 is a solution for C. 77-7b and D. 9=b-2
Suppose that a typical adult heart pumps 5.0 liters of blood per minute. Express this rate in SI units you provided above. M/s. 1cm^3=1mL
Answer:
The answer is below
Step-by-step explanation:
International system of unit (SI unit) are standard units which are universally accepted. There are 7 basic SI units which are meter (m), second (s), kilogram (kg), mole (mol), ampere (A), candela (cd) and kelvin (K).
The SI unit of flow rate is the m³/s.
The conversions needed are:
1 minute = 60 seconds,
1 cm³ = 1 ml = 0.001 ml,
1000000 cm³ = 1 m³,
1 L = 0.001 m³
We have to convert 5.0 liters of blood per minute. to m³/s. Therefore:
[tex]5\ L/minute=\frac{5\ L*0.001\ m^3}{1\ min*60\ s}=8.33*10^{-5} \ m^3/s[/tex]
cos3A-sin3A/1-2sin2A= cosA + sinA. Prove the identity
Step-by-step explanation:
(cos(3A) − sin(3A)) / (1 − 2 sin(2A))
Use double angle formula:
(cos(3A) − sin(3A)) / (1 − 4 sin A cos A)
Use triple angle formulas:
(4 cos³A − 3 cos A − 3 sin A + 4 sin³A) / (1 − 4 sin A cos A)
Group and factor:
(4 (cos³A + sin³A) − 3 (cos A + sin A)) / (1 − 4 sin A cos A)
Factor the sum of cubes:
(4 (cos A + sin A) (cos²A − cos A sin A + sin²A) − 3 (cos A + sin A)) / (1 − 4 sin A cos A)
Use Pythagorean identity:
(4 (cos A + sin A) (1 − cos A sin A) − 3 (cos A + sin A)) / (1 − 4 sin A cos A)
Factor out cos A + sin A:
(cos A + sin A) (4 (1 − cos A sin A) − 3) / (1 − 4 sin A cos A)
Simplify:
(cos A + sin A) (4 − 4 cos A sin A − 3) / (1 − 4 sin A cos A)
(cos A + sin A) (1 − 4 cos A sin A) / (1 − 4 sin A cos A)
cos A + sin A