During a musical an orchestra is playing. As the music plays, the volume changes in the beginning of the piece can be modeled by the equation s = 10│x - 4│+ 50 where s represents the sound level in decibels and x represents the number of measures of music played. Explain in words each step to find the following question:
At what number(s) measures played would the sound level be at 80 decibels?
Answer:
The numbers of measure of music played are 1 and 7
Step-by-step explanation:
Given
[tex]s = 10|x - 4| + 50[/tex]
Required
Solve for x when s = 80
Substitute 80 for x
[tex]80 = 10|x - 4| + 50[/tex]
Subtract 50 from both sides
[tex]80 - 50= 10|x - 4| + 50 - 50[/tex]
[tex]30= 10|x - 4|[/tex]
Divide through by 10
[tex]\frac{30}{10}= \frac{10|x - 4| }{10}[/tex]
[tex]3= |x - 4|[/tex]
Reorder
[tex]|x - 4| = 3[/tex]
This can be split into
[tex]x - 4 = 3[/tex] or [tex]x - 4 = -3[/tex]
Solve for x
[tex]x = 4 + 3[/tex] or [tex]x = 4 - 3[/tex]
[tex]x = 7[/tex] or [tex]x = 1[/tex]
Hence:
The numbers of measure of music played are 1 and 7
Are the expressions 3.16 - 0.22b and 2.88b Equivalent?
Answer:
no
Step-by-step explanation:
Is the following statement true or false?
A line segment extends forever.
true
false
Answer:
false
Step-by-step explanation:
Satellites in low-Earth orbit circle around our planet at about 4.72 miles per second. A satellite that relayed a phone text message traveled 16.52 miles before the message reached the recipient. How long did it take the text to go from phone to phone? It took the text seconds to go from phone to phone.
Answer: 3.5
Step-by-step explanation:
Divide 16.52 by 4.72. It equals 3.5.
Using the speed - distance relationship, the time it'll take for the text to travel from phone to phone is 3.5 seconds.
Given the parameters :
Transmission speed = 4.72 miles per second Distance traveled = 16.52 milesRecall :
Time = Distance ÷ SpeedTime taken = (16.52 / 4.72) = 3.5 seconds.
The time it took the text to travel from phone to phone is 3.50 seconds.
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7(5a-9)=100
umm..haha yeah HELP
Can you please help me
The first step would be to multiply 6 by -3
Answer:
the answer to that would be 14
expand the following by using the distributive property: 6(-3w+1/3)
Answer:
-18w+2
Step-by-step explanation:
6*-3w=-18w
1/3*6=2
The resultant expression is -18w + 2 which could represent the expanded form by using the distributive property.
What is the expression?Expressions are defined as mathematical statements that have a minimum of two terms containing variables or numbers.
The expression is given in the question as follows:
6(-3w+1/3)
We have to expand the given expression by using the distributive property.
As per the question, we have
⇒ 6(-3w+1/3)
Apply the distributive property of multiplication,
⇒ 6 × (-3w)+ 6 × (1/3)
⇒ -18w + 6/3
⇒ -18w + 2
Therefore, the resultant expression is -18w + 2.
Learn more about Expressions here :
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#SPJ2
How do I solve this
2a+7=23
Answer:
Subtract 7 from both sides and then divide both sides by 2
Step-by-step explanation:
Answer:
a=8
Step-by-step explanation:
First subtract 7 from both sides so you end up with
2a=16
Then divide by 2
a=8
The average household uses about 15,000 kilowatt hours per year. How many households could use that wasted electricity from item 12 and have light for a year? Express your answer in standard notation HURRYYYY
Answer:
What is item 12? Not enough information.
Which expression is equivalent to 4.25 − (−8)
Answer:
4.25+8=17/4+32/4=49/4 or 12.25
If Sarah starts her chores at 10:15 a.m. and it takes her 4 hours and 10 minutes to complete them, what time will she finish?
2:25 p.m.
2:05 p.m.
2:25 a.m.
6:05 p.m.
Answer:
2:25 pm
Step-by-step explanation:
If you look at the diagram of the clock I put, the blue hands are the starting times and the red are the ending times. The short arrow shows the hours so we move that four numbers clockwise (to the right). The long arrow shows minutes so we move it two numbers clockwise since inbetween each number is 5 minutes and we need to go 10 minutes. We switch the am to pm since the shorter arrow moves past the 12.
Help please I would appreciate it ! 10 points
Answer:
:)
Step-by-step explanation:
Just get multiple base times height and then you'll get the answer.
Find the sum of (x² + 6x – 5) + (2x2 + 15).
★ (x² + 6x - 5) + (2x² + 15)
➠ x² + 6x - 5 + 2x² + 15
By combining similar terms, we ge[tex]t[/tex]
➠ x² + 2x² + 6x - 5 + 15
➠ 3x² + 6x - 10
By taking 3x common, we get
➠ 3x(x + 2) - 10
Hope It Helps!Andrew goes biking every morning. The number of calories he burns during the bike ride depends on the distance he bikes.
c = the number of calories Andrew burns during the bike ride
d = the distance Andrew bikes
Which of the variables is independent and which is dependent?
Answer:
C hope this helps :)
Step-by-step explanation:
Answer:
d (distance) is independent and c (calories burned) is dependent
Step-by-step explanation:
the amount of calories burned depends on the distance Andrew rides his bike. the dependent variable depends on the independent variable.
Write an equation of the line with the given point and slope: (4, 2) m=-3.
y=_______ X+_______
Blank 1:
Blank 2:
I BELIEVE THIS OS THE ANSWER:
BLANK 1 : -3
BLANK 2: 14
HELP HELP HELP! PLEASE NEED HELP SOLVING THIS WITH EXPLANATION THANK YOU
Answer:
as the opposite angles are similiar to each other for example : angle A is equal to angle B. Angle H is similiar to angle D
Derek has a bird that weighs 3 pounds. Use the double line diagram below to help you determine approximately how many kilograms this bird weighs.2 lines. The first line is labeled Pounds and has 6 marks, equally spaced apart, and every other mark labeled 3, 5, 7, respectively. The second line is labeled Kilograms and has 6 marks, equally spaced apart, and every other mark labeled, 1, 2, 3, respect
Answer:
the answer is 1.5
Step-by-step explanation:
if you look at the first line it say the first number is 3 right? and then if you look at the second one the first number is 1 then you look at the middle line right below the 3 which means its a half so add 1 and the half and a half is 0.5 and if you add those two together you get 1.5hope this helps :)
Please help meeeee !!!
The solution to m + (-38) = 15 is 53.
Answer:
it is true because when you do 53-38 it will be the same as 53+-38 both will have the sum of 15
Step-by-step explanation:
emilythompson35464
hope this helps srry if it doesn't tho
Answer:
YES!!!!! m=53
Step-by-step explanation:
m + (-38) = 15
m - 38 = 15
m = 53
Two less than 3 times a number is the same as the number plus 10.
whats the difference between graphing and writing equations from table, points, and equations,
If 7p + 5q = -3, find q when p = 1.
Answer:
q=-2 when p=1
Step-by-step explanation:
Answer:
q = -2
Step-by-step explanation:
7p + 5q = -3
=> 7x1 + 5q = -3
=> 7 + 5q = -3
=> 5q = -3 - 7 = -10
=> q = -2
-6x +10 = -104
what’s x ?
Answer:
19
Step-by-step explanation:
-6x + 10 = -104
-6x = -114
x = 19
Answer:
[tex]\boxed {x = 19}[/tex]
Step-by-step explanation:
Solve for the value of [tex]x[/tex]:
-[tex]6x + 10 = -104[/tex]
-Subtract [tex]10[/tex] to both sides:
-[tex]6x + 10 - 10 = -104 -10[/tex]
-[tex]6x = -114[/tex]
-Divide both sides by [tex]6[/tex]:
[tex]\frac{-6x}{-6} = \frac{-114}{-6}[/tex]
[tex]\boxed {x = 19}[/tex]
Therefore, the value of [tex]x[/tex] is [tex]19[/tex].
is 2/3 a rational or irrational
Answer:
it is a rational number
Step-by-step explanation:
hope dis helps ;D
Answer:
irrational
Step-by-step explanation:
A rational number is one that can be written as the ratio of two integers. For example 3=3/1, −17, and 2/3 are rational numbers.So in that case 2/3 is irrational.
A box of chocolates contains 18 square chocolates 10 of the squares are milk chocolate 3 are white chocolate, If Christina randomly chooses a chocolate out of the box, what is the probablity of her choosing a white chocolate square.?
A. 1/18
B. 1/6
C. 5/18
D. 1/3
Answer: B. 1/6
Step-by-step explanation:
Since there are 3 white chocolates, the fraction of white chocolate is 3/18.
3/18 simplified is 1/6.
Which expressions are equivalent to -6n+(-12)+4
A 4(n - 3) - 6n
B 2(2n - 6)
C None of the above
Help needed ASAP will give you BRAINLIEST and 5 stars rate
Answer:
chart/graph
Step-by-step explanation:
chart/graph would most effectively accomplish their task. a map or subheading or photograph would do poorly in showing the rapid increase in water pollution
can yall please help? i have to pass geometry to play volleyball :( .
What are the answers pls help
help me asap! A parka that sold for $50 is marked up to $60. What is the percent of markup?
Answer:
the markup is 20 percent