A paramedic in an ambulance does not experience the Doppler effect of the siren?
Answer:
He does not
Step-by-step explanation:
He doesn't experience Doppler effect because with respect to him, the source of sound is stationary.
A skating rink sold tickets for Friday Night's show. Of the 66 tickets sold 2/3 were adult tickets and 1/3 were children's tickets. What is the total number of adult tickets sold?
The number of aduir tickets sold was 44. If 2/3 of the ticket is 66 and 1/3 of the tickets is 1/3, you’ll know that by diving 66 with 3 you find the answer for the children’s ticket. 66 divide 3 is 22. But how do you find the adults ticket? Well if the rest are all adults which it is then you find the left overs. 66-22=44 and the answer will be 44. 1/3 of 66 is 22 and 2/3 of 66 is 44.
-\dfrac{16}{5},8,-20,− 5 16 ,8,−20,minus, start fraction, 16, divided by, 5, end fraction, comma, 8, comma, minus, 20, comma
Answer:
50
Step-by-step explanation:
Correct question
-16/5, 8, -20. What is the next term of the geometric sequence.
The nth term of a geometric sequence is expressed as:
Tn = ar^n-1
From the sequence:
a is the first term = -16/5
n is the number of term = 4(since next term is 4th term
r is the common ratio = (8)÷(-16/5) = 8×-5/16
r = -5/2
Substitute the given values into the formula
T4 = -16/5(-5/2)^4-1
T4 = -16/5(-5/2)³
T4 = -16/5×-125/8
T4 = -16/8×-125/5
T4 = -2×-25
T4 = 50
Hence the next term is 50
Answer:
Step-by-step explanation:
s is inversely proportional to t . When s = 0.6 , t = 5 Work out s when t = 0.3
Answer:
s = 10
Step-by-step explanation:
Given s is inversely proportional to t , then the equation relating them is
s = [tex]\frac{k}{t}[/tex] ← k is the constant of proportion
To find k use the condition when s = 0.6, t = 5
0.6 = [tex]\frac{k}{5}[/tex] ( multiply both sides by 5 )
3 = k
s = [tex]\frac{3}{t}[/tex] ← equation of proportion
When t = 0.3, then
s = [tex]\frac{3}{0.3}[/tex] = 10
B = 57°, b = 26 cm. Find c in cm. Round to 2 decimal places.
Answer:
17
Step-by-step explanation:
Answer:
21.1cm
Step-by-step explanation:
From sine rule which can be expressed as
b/ sinB = c/sin C
B = 57°,
b = 26 cm.
FROM THE COMPLETE QUESTION,
C=43°
Then we can substitute this
26/sin(57) = c/sin(43)
If we cross multiply and make "c" subject of the formula
c=[26 × sin(43)]/ sin57
c= 21.1 cm
3+-2+6
7-8-3
Evaluate the expressions using the rule of PEMDAS and integers
!!!!!!!!!HELP OVER HERE!!!!!!!!
Answer:
Step-by-step explanation:
P - Parenthesis
E - Exponents
M - Multiplication
D - Division
A - Addition
S - Subtraction
2). 4 × (3 + - 3) [Parenthesis]
= 4 × (3 - 3) [subtraction]
= 4 × 0 [Multiplication]
= 0
3). 24 ÷ (-4 + 12) + 2² [Parenthesis]
= 24 ÷ (8) + 2² [Exponents]
= 24 ÷ 8 + 4 [Division]
= 3 + 4 [Addition]
= 7
Solve for k.
10/3 = K/9
K=
Answer:
is 30 hope I helped!!:D
Step-by-step explanation:
step 1 : cross multiply.
10/3= k/9
(10)*(9)=k*(3)
90=3k
step 2: flip the equation.
3k =90
step 3: Divide both sides by 3.
3k/3=90/3
k=30
x – 15 = 60
What is the answer
Answer:
x=75
Step-by-step explanation:
Section 1
Decide which is TRUE for b. when b = 16.
To get to her parents' house, Helen would have to drive due north 16 kilometers. To get to her grandparents' house, she would
have to drive due east 12 kilometers. What is the straight-line distance between the parents' and grandparents' houses?
kilometers
Answer:
for points
Step-by-step explanation:
plZz answer i need HELP ANswer BOth
Answer:
[tex]m = 35.65 \\ b = 17.25[/tex]
Step-by-step explanation:
srry if its wrong but I think it's right :)
btw for the first one
p=19.53
Which ordered pair is a solution of the equation? y +1 = 3(x – 4)
Answer:
Y=-1
X=4/3
Step-by-step explanation:
which statement correctly compares the rate of change of the two functions
Answer:
C
Step-by-step explanation:
Equation of Function A is
y=2x+5
Equation of Function B is
y=2x-3
The non separable differential equation dy dx = 8x − 2y has a linear particular solution of the form y = mx + b. Find m + b.
Answer:
[tex]m + b=2[/tex]
Step-by-step explanation:
From the question we are told that
The non separable differential equation [tex]\frac{dy}{dx} = 8x - 2y[/tex]
Generally the chi form of a give equation is mathematically represented as
[tex]\frac{dy}{dx} +P(x)y= q(x)[/tex]
[tex]\frac{dy}{dx} + 2y = 8x[/tex]
[tex]ye^2^x=\int e^2^.8xdxx[/tex]
[tex]ye^2^x=8(\frac{xe^2^x}{2}-\frac{\int e^2^x}{2})[/tex]
[tex]ye^2^x=8(\frac{xe^2^x}{2}-\frac{e^2^x}{1})+c\\[/tex]
[tex]ye^2^x=4x^2^x-2e^2^x+c[/tex]
[tex]y=4x-2+c[/tex]
for c=0
[tex]y=4x-2[/tex]
Therefore
[tex]m=4\\b=-2\\m + b=4-(+2)[/tex]
[tex]m + b=2[/tex]
The linear particular solution of the form [tex]y=mx+b[/tex] where [tex]m+b=4-2=2[/tex]
Nonseparable differential equation:
Differential equations that cannot be written [tex]\frac{dy}{dx} =f(x)g(y)[/tex] are non-separable differential equations.
In other words, we can say those differential equations which are not separable are called non-separable differential equations.
The given equation is,
[tex]\frac{dy}{dx}=8x-2y[/tex]
This is in the form [tex]\frac{dy}{dx} +p(x)y=\phi(x)[/tex]
Here [tex]P=2, Q=8x[/tex]
So, [tex]e^{\int_{}^{}Pdx}=e^{\int_{}^{}2dx}=e^{2x}[/tex]
Therefore, the general solution is,
[tex]ye^{\int_{}^{}Pdx} =\int_{}^{}Qe^{\int_{}^{}Pdx}dx+c\\ye^{2x}=\int_{}^{}8xe^{2x}dx+c\\y=4x-2+c^{-2x}[/tex]
Learn more about the topic of nonseparable differential equations:
https://brainly.com/question/25731911
Amy and Roger both wash windows at a large downtown building. Amy can wash 25 windows In 4 hours, Roger can wash 32 windows in 6 hours. How many windows can they wash together in 12 hours? [Type your answer as a number.)
Answer:
139 windows
Step-by-step explanation:
you multiply the 25 by 3 because Amy washes 25 windows per 4 hours and 3x4 is 12 so that would be 75 then you multiply the 32 by 2 because 6x2 is 12 so that would be 64 then you add the 64 and 75 which would give you 139 windows for both of them in 12 hours
Which is an equation of the line that passes through the points (-4,-2)
and (4, 2)
Answer: y = one half x
Guys plz solve this .
Answer:
X=7
Step-by-step explanation:
4x+8=7x-13
-4x. -4x
8= 3x -13
+13. +13
21=3x
21÷3=7
x=7
Answer:
The answer is x = 7
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable
6th grade math help me plzzz
Answer:
b
Step-by-step explanation:
A shoe box has a length of 14.5 inches, a width of 7 inches, and a height of 5 inches.
Answer:
418
Step-by-step explanation:
Use a graphing calculator to approximate the vertex of the graph of the parabola defined by the following
equation.
y = -5x2 - 4x + 6
a. (2, 6.8)
C. (0.4, 6.8)
b. (-0.4, 6.8)
d. (-0.4, 5.2)
Answer: (-0.4, 6.8)
The graph is attached
Step-by-step explanation:
We can find the axis of symmetry using the formula x = -b/2a
x = - -4/2(-5)
x = 4/-10
x = 0.04
Substitute for x and calculate y
y = [tex]\left(0.4^{2}\right)\left(-5\right)-4\left(-0.4\right)\ +6[/tex]
y = 6.8
Answer: b. (-0.4,6.8)
Step-by-step explanation:
Y = (x+7)(x+3)
vertex
minimum
y-intercepts
x-intercepts
Answer:
Vertex: (-5,-4) Y-int: (0,21) X-int. = (-7,0), (-3,0)
Step-by-step explanation:
Suppose 8x + 16 ice cream cones were sold on Saturday and 7x – 9 were sold on Sunday. What is the total number of ice cream cones sold?
A. 15x + 25
B. 15x + 7
C. x + 7
D. x + 25
which one is correct please help
Answer:
B. 15x+7
Step-by-step explanation:
8x + 7
+ =15x +7
7x - 9
please helppppp mee
Answer:
The domain is the speed of the airplane.
The range is the distance travelled by the airplane.
Step-by-step explanation:
From Theory of Values, the domain of a function is the set of independent values, whereas the range of a function is set of dependent values, that is, values associated to one distinct element from domain. In this case, the independent variable is speed, whereas the dependent variable is the distance travelled by the airplane, since it is described in terms of speed.
Hence, the answer to this exercise is:
The domain is the speed of the airplane.
The range is the distance travelled by the airplane.
Armando has collection of 25 coins . Of the 25 coins , 11 are nickles. What percent of the coins are nickles ?
Answer:
10%
Step-by-step explanation:
What is the value of r of the geometric series?
Sigma-Summation Underscript n = 1 Overscript 3 EndScripts 1.3 (0.8) Superscript n minus 1
0.8
1.3
3.0
3.2
Answer:
0.8Step-by-step explanation:
Given the formula for the geometric series expressed as;
[tex]\sum \left \{ {3} \atop {1}} \right 1.3(0.8)^{n-1}[/tex]
The nth term of a geometric progression is expressed as;
[tex]T_n = ar^{n-1}\\[/tex]
a is the first term
r is the common ratio
Comparing both equations;
[tex]0.8^{n-1} = r^{n-1}\\Cancel \ the \ powers\\0.8 = r\\r = 0.8\\[/tex]
Hence the value of r of the geometric series is 0.8
Answer:
A
Step-by-step explanation:
Just took test
The sum of 25 and twice a number is 75. Find the number.
Answer:
50
Step-by-step explanation:
25*2= 50+25= 75
Answer:
25
Step-by-step explanation:
75-25=50/2=25
Simplify the expression. 12x + 9 - 3X -4
One to one relationships describe situations where people are matched with with unique identities, such as their Emirates ID number. A function is a relation that matches x-values to y-values. What do you suppose a one to one function is?
A one to one function is a function which matches exactly one x value with exactly one y value. The fancy term for this is an injective function.
The one function that matches to the one relationships of the situation where the people have equal identities as their ID numbers. The function relates to the injunctive function.
The function is called as one to one function. The function x = f(x) maps the distinct element of the distinct functions. Such as 1 = D, 2- B, and 3 = A.Learn more about the are matched with with unique identities.
brainly.com/question/24004220
if the slope is 20 and the y intercept is 0,1 what is the equation
Answer:
[tex]y = 20x + 1[/tex]
Step-by-step explanation:
The format for the equation of a line is [tex]y = mx + b[/tex], with [tex]m[/tex] being the slope and [tex]b[/tex] being the y-intercept.
You have that information already, so we can just plug it in.
[tex]y = 20x + 1[/tex]
I'm assuming 0,1 means (0, 1) as in a coordinate. If you meant a decimal, 0.1, adjust accordingly.
Answer:
y=20x+1
Step-by-step explanation:
Fitz is x years old. If Fiona's is 3years younger than twice Fitz's age, what expression describes Fiona's age in terms of x ?
Answer:
(2x - 3) years
Step-by-step explanation:
Fitz is x years old.
Let us represent:
Fiona's age = y years old
If Fiona's is 3years younger than twice Fitz's age.
y = 2 × x - 3
y = 2x - 3
Therefore, the expression that describes Fiona's age in terms of x is
(2x - 3)years
the equation y=2x-1 is the boundary line for the inequality y>2x-1. which sentence describes the graph of the inequality?
A: the region shaded above a dashed boundary line
b: the region shaded above a solid boundary line
c: the region shaded below a solid boundary line
d: the region shaded below a dashed line
Answer: A
Step-by-step explanation:
The region shaded above a solid boundary line is considered. Then the correct option is B.
What is inequality?Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.
A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
The line is given below.
y = 2x - 1
y > 2x - 1
Combine the equations. Then we have
y ≥ 2x - 1
The graph of the line is given below.
The region shaded above a solid boundary line is considered. Then the correct option is B.
More about the inequality link is given below.
https://brainly.com/question/19491153
#SPJ2
