The temperature at the time the siren sounded is not 20 degrees c because, the speed of the siren sound is 400 meters per second, contrary to the speed of sound at 20 degrees c, 344 meters per seconds.
According to the question:
At 20 degrees c, sound travels throughout air at about 344 meters per seconds.However, Enrique's house is 2 kilometres from the station and it takes 5 seconds for the fire station siren to reach him.
In essence, the speed of the siren sound is;
Speed = 2,000/5 = 400 meters per second.
Ultimately, since the speed of the siren sound is 400 meters per second, contrary to the speed of sound at 20 degrees c, 344 meters per seconds.
We can conclude that the temperature is not 20 degrees c.
Read more on speed of sound:
https://brainly.com/question/16027554
What is the slope of a line whose equation is 2x-y=7 fully reduce the answer
Oki received a statement on her Certificate of Deposit showing that her investment had returned $4,836 over its life. If the Certificate of Deposit pays a simple interest rate of 3.1% and her initial investment was $19,500, how long had the money been invested?
Answer:
3.1% of 19,500= 604.50
4836 ÷ 604.50 = 8
8 years is the answer
Imagine having to do all this math
Answer:
Oof
Step-by-step explanation:
Select the correct answer
from each drop-down menu.
The function f(X) = x^3 has been transformed, resulting in function h.
h(x) = -(x + 2)^3– 4
To create function h, function f was translated 2 units (BLANK)
translated 4 units (BLANK)
,and reflected across the
Answer:
Translated 2 units Right
and Translated 4 units left and Across the y - axis
Now the new function is
h(x) = -( x + 2 )³ - 4
Step-by-step explanation:
Step(i):-
Type of transformation change of function
a) The translated left 'c' units x - c
b) The translated Right 'c' units x + c
Step(ii)
The given function f(x) = x³
The given function is translated '2' units right side then the new function
h(x) = ( x + 2 )³
and next the translated '4 ' units left sides and reflected across the y-axis
Now the new function is
h(x) = -( x + 2 )³ - 4
Answer: left, down,x-axis
Step-by-step explanation:
HEY CAN ANYONE ANSWER DIS MATH QUESTION!!
Answer:
no the y may be to the degree of 1 but the variables in the equation violate the linear equation definition. Therefore the equation is not linear.
Step-by-step explanation:
A linear equation is an equation of a straight line, which means that the degree of a linear equation must be 0 or 1 for each of its variables.
please help super confused
Answer:
∠ EHK
Step-by-step explanation:
Adjacent angles are positioned next to each other on a straight line and are supplementary.
∠ IHK is next to ∠ EHK on the line DI and are adjacent
If AMNO = AXYZ, then what
corresponding parts are congruent?
ZM and ZZ
MN and zx
ZN and ZY
NO and YX
The congruent corresponding part of the triangles from the options is ∠N = ∠Y.
What are congruent triangles?Two triangles are said to be congruent if they have congruent corresponding parts.
Given that, two triangles Δ MNO and Δ XYZ that are congruent.
The corresponding parts are =
∠M ≅ ∠X
∠N ≅ ∠Y
∠O ≅ ∠Z
MN ≅ XY, NO ≅ YZ and MO ≅ XZ
Hence, the congruent corresponding part of the triangles from the options is ∠N = ∠Y.
Learn more about congruent triangles, click;
https://brainly.com/question/22062407
#SPJ7
Tell how many terms the expression has 15.5 - (6x2)-(16 ÷ 4)
Answer:
There are three terms in the expression.
Step-by-step explanation:
Some background knowledge:
Algebraic expressions do not include equal signs.
Terms are generally values that are added or subtracted.
For example,
2x+6 has two terms which are 2x and 6.
Here:
The term 2x has a coefficient (the number next to a variable) of 2 and the term '6' is a constant.
Please note that a constant is a number that does not include a variable.
LET US SOLVE OUR CASE:
Given the expression
15.5 - (6 x 2) - (16 ÷ 4)
Please note that:
(6 x 2) is one term. Because of the parentheses, it groups it as one term. (16 ÷ 4) is also one term. Because of the parentheses, it groups it as one term.Therefore, there are three terms in the expression.
HELP ME.
How can you use inverse operations to solve equations with multiplication and division?
(can you make the answer some what simple)
Answer:If a variable is connected to a number by multiplication at one side the linear equation, then try its inverse operation division at both left and right-hand sides of the equation for solving the variable. 4 x = 24 In this example, the number 4 is multiplied to variable x.
Step-by-step explanation:
Drag the tiles to the correct boxes to complete the pairs. Match each ratio with its simplest form.
3:1
2:3
1:3
3:4
6:7
9:7
21:28
96:32
22:33
12:36
72:56
54: 63
Answer:
ll
Step-by-step explanation:
PLEASE HELP
What is 2/3 of 15% of $2,000?
F. $100
G. $200
H. $300
J. $450
K. $500
Answer:
$200 dollars my friend.
Step-by-step explanation:
Hope I helped!
The solution is Option G.
The value of the equation A = ( 2/3 ) x 15% x $ 2000 = $ 200
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is
Substituting the values in the equation , we get
A = ( 2/3 ) x 15% x 2000 be equation (1)
On simplifying the equation , we get
A = ( 2/3 ) x ( 15/100 ) x 2000
A = ( 2/3 ) x ( 15 ) x ( 20 )
On further simplification , we get
A = ( 2/3 ) x 300
A = 2 x 100
A = $ 200
Therefore , the value of A is $ 200
Hence , the equation is A = $ 200
To learn more about equations click :
https://brainly.com/question/19297665
#SPJ2
PLZZZ HELP will mark brainliest!
Answer:
(3,8): No, (-1,-11): Yes, (2,7): Yes, (0,-6): No
Step-by-step explanation:
Basically, you just substitute x and y with the numbers given.
18x - 3y = 15
y = 6x - 5
(3,8):
18(3) - 3(8) = 15
54 - 24 = 30 It is not equal to 15, so it does not work.
y = 6x - 5
8 = 6(3) - 5
8 = 13 It is not equal to 8, so it does not work.
Therefore, (3,8) is not a solution.
Try this for every pair and you will find that (-1,-11) and (2,7) are solutions.
I hope this helps!
I will give brainliest
Answer:
24 Units.
Step-by-step explanation:
Answer:
24
Step-by-step explanation:
The perimeter of Square three is 20.4 square units in the perimeter of square two is 27.2 square units what is the area of square one
Answer:
a=554.88
Step-by-step explanation:
20.4*27.2=
Find the exact value of cos 120° in simplest form with a rational
denominator.
Given:
cos 120°
To find:
The exact value of cos 120° in simplest form with a rational denominator.
Solution:
We have,
[tex]\cos 120^\circ[/tex]
It can be written as
[tex]\cos 120^\circ=\cos (90^\circ+30^\circ)[/tex]
[tex]\cos 120^\circ=-\sin 30^\circ[/tex] [tex][\because \cos (90^\circ-\theta)=-\sin \theta][/tex]
[tex]\cos 120^\circ=-\left(\dfrac{1}{2}\right)[/tex] [tex][\because \sin 30^\circ=\dfrac{1}{2}][/tex]
[tex]\cos 120^\circ=-\dfrac{1}{2}[/tex]
Therefore, the exact value of cos 120° is [tex]-\dfrac{1}{2}[/tex].
Always, sometimes, or never true: A vertical line is parallel to the y-axis?
Answer:
Sometimes, because a vertical line can be on top of the y-axis or next to it.
Hope it helps :)
It would take Charlene and Gina 18minutes to organize Chinese comic book collection if they work together do you know works alone it would take her 15 minutes longer than it would take Charlene working alone when X represents the number of minutes it takes Charlene to organize her comic book collection working alone the situation is represented by this equation
Answer:
the answer is x=-9
Step-by-step explanation:
write an equation of the line with the given slope and y-intercept
slope: 2
y-intercept: 9
Answer:
y=mx+c
y=2x+9
Step-by-step explanation:
Slope(m)=2, y-intercept(c) =9
Substitute in the equation y=mx+c
A rectangle has sides that measure x + 1/4
and 2x + 1/3. What is the perimeter of the
rectangle?
Answer:
6x + 5/6
Step-by-step explanation:
2(x + 1/4) + 2(2x + 1/3)
2x + 1/2 + 4x + 2/3
6x + 5/6
A bike in a store costs $230. It's on sale for 25% off. Find the sale price.
Answer:
57.50 dollars
Step-by-step explanation:
you can use a calculator and multiply so it would give you the finishes product
Answer:
172.5
Step-by-step explanation:
you do 230/4 which is 57.5 then you got to do 57.5 times 3 which is 172.5
Please please please help me with math
Answer:
30 dollars
Step-by-step explanation:
The y-intercept is 15 and the slope is 30
How?
slope = change in y/change in x
Which angle is coterminal to (3pi)/4 radians? - (5pi)/4 radians - (3pi)/4 radians (5pi)/4 (7pi)/4 radians
Answer:
-5pi/4
Step-by-step explanation:
3pi/4 on the unit circle is coterminal with -5pi/4 because they are the same distance from 0
Answer: a. -5pi/4
Step-by-step explanation:
Edge
Find the slope of the line through each pair of points.
(-2, -12) and (-18, -12)
Answer:
0/16
Step-by-step explanation:
you use the equation y2-y1/x2-x1 so -12-(-12) which is 0 then do -18-(-2)=-16 so the slope is 0/-16
please marking brainlist. what is 8d-5d=
Answer:
3d
Step-by-step explanation:
My brainliest please
Answer:
3d
Step-by-step explanation:
do 8-5+3, but you will still need to multiply the 3 and d.
Which expression matches the situation?
Patrick cuts a piece of board 4 feet long from a board that is "b" feet long.
Please help
Answer:
b-4
Step-by-step explanation:
I'm going to assume because it states Patrick cuts a piece of bored. taking away from it.
what is m if m + 16 = 31
Answer:
15
Step-by-step explanation:
m + 16 = 31
m = 31 - 16
m = 15
Answer:
m = 15
Step-by-step explanation:
15 + 16 = 31
Solve for x. 2(x-4)=17 a. X=1 b. X=2 c. X=12.5 d. X= 11
Answer:
c. x=12.5
Step-by-step explanation:
Equation Solving
Given the equation
2(x - 4) = 17
Solving for x implies doing several operations needed to have x isolated in the left part of the equation.
Dividing by 2:
x - 4 = 17/2
x - 4 = 8.5
Now we add 4:
x = 8.5 + 4
x = 12.5
Answer: c. x=12.5
Christine purchased a prepaid phone card for $25 . Long distance calls cost 21 cents a minute using this card. Christine used her card only once to make a long distance call. If the remaining credit on her card is $17.23 , how many minutes did her call last?
Answer : 37 minutes
Step-by-step explanation:
Subtract 25 and 17.23 then divide by 0.21
25-17.23=7.77 divide by 0.21 (21 divided by 100) =37
What does the y-intercept of the graph of the function f(m) represent? (2 points)
Answer:
you do realize you're showing your face
Step-by-step explanation:
PLEASE HELP!!!
"Which graph represents the function f(x) = |x| – 4?"
Answer:
the second picture
Step-by-step explanation:
you substitute x=0
into y=abs(x)-4
you get y=0 -4= -4
so x=0 y= -4
look at each graph
then substitute y=0
into y=abs(x) -4
you get 0= abs(x) -4
4=abs(x)
x=4 or x=-4
look at each graph
so you will find it`s graph 2
