Complete question :
The loudness of a jack hammer is 96 dB. Its sound intensity is about 0.004.
The loudness of a compactor is 94 dB. Its sound intensity is about 0.0025.
The sound intensity of the jack hammer is about 1.6 times the sound intensity of the compactor.
The loudness of a pile driver is 112 dB. About how many times the sound intensity of the jackhammer is the sound intensity of a pile driver? Round to the nearest ten.
Answer:
40
Step-by-step explanation:
Given that:
Sound intensity of jackhammer = 0.004
Sound intensity of compactor = 0.0025
Sound intensity of jackhammer is about 1.6 times the sound intensity of a compactor
Each factor of 10 in intensity corresponds to 10dB
Pile driver with loudness of 112dB ; 112 / 10 = 11.2
Hence, 10^11.2 = 1.58489 * 10^11
Hence, sound intensity (I) in watts per m²
I = 1.58489 * 10^11 * 10^-12
I = 1.58489 * 10-1
I = 0.158489
Comparing the intensity of pile driver and jackhammer :
Intensity of piledriver / Intensity of jackhammer
0.158489 / 0.004
= 39.622
= 40 (nearest ten)
Answer:
40
Step-by-step explanation:
Edge 2020
Help me pls I’m failing math I need a good grade on this
Answer:
2 2 /5 = 2.4 = 240 %
Step-by-step explanation:
The number 1 is the same as 1.00 and is the same as 100%.
The number 2, therefore, is the same as 2.00 and the same as 200%
2 /5 can be converted into a decimal by seeing that 2 /5 = 4 /10 . 4 /10 , spoken out loud, is "four tenths" and shows that the decimal is
0.4 . And 0.4 is the same as 40%. Which means that 2 2 /5 = 2.4= 240 %
Cylinder capacity 4.25 L, cylinder diameter of 13 what is the height of the cylinder?
Answer:
Step-by-step explanation:
Capacity of cylinder =4.25L
So volume of the cylinder=4250
πr^2h=4250
3.14×6.5×6.5×h=4250
132.665h=4250
h=4250/132.665
h=32.035
GIVING BRAINIEST EXPLAIN ANSWER
Answer: B. -0.5 blocks per minute
Step-by-step explanation: It goes up 2 on the x column and down 1 (-1) on the y column. So it would be -1/2 = -0.5.
Answer:
B.) -0.5 blocks per minute
Step-by-step explanation:
Equation:
Rate of Change [tex]= \frac{8 - 9}{4 - 2}[/tex]
Simplify:
Rate of Change = [tex]\frac{-1}{2}[/tex]
Simplify:
Rate of Change = [tex]-0.5[/tex]
A train leaves LA at 2:00 pm and heads north at 50 mph. If the next train leaves the station three hours later and heads north at 60 mph, at what time will the second train catch up to the first train?
Answer:
https://brainly.com/question/6423861
Step-by-step explanation:
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Answer:
A D
Step-by-step explanation:
Since it is a one time fee of 55$, that will be our y intercept.
That allows A and D and F possible answers.
It says 10$ per puzzle and they spent 1245$
So A and D are answers.
if triangle GHI is equilateral and JHK is isosceles, what is the measure of JHK
Answer:
The measure of JHK is 25 degrees
Step-by-step explanation:
If GHI is equilateral, it means each of the angles are equal to 60 degrees
Thus;
7x - 31 = 60
7x = 60 + 31
7x = 91
x = 91/7
x = 13 degrees
The measure of JHK IS x + 12
simply insert the value of x here
Angle JHK = 13 + 12
Angle JHK is 25 degrees
Answer: 25
Step-by-step explanation:
If x=5 and the area of the rectangle is 30 what is the other length of the rectangle?
Answer:
The other length would be 6.
Step-by-step explanation:
Rectangle area is l times height. So x is either the length for height. So we have 5 times x = 30. To find the other length we have to take 30/5 which equals 6
The cheerleaders at City High make their own
megaphones by cutting off the small end of a
cone made from heavy paper. If the small end of
the megaphone is to have a radius of 2.5 cm,
what should be the height of the cone that is cut
off?
2.5 cm
60 cm
Answer:
The height of the cone that is cut would be 2.5
Find the slope of the line. (-3/2, -3/2) (3/2, 3/2)
Answer:
1
Step-by-step explanation:
1st way: We can find the slope of the line by plugging the two points into the slope formula. If you do, slope would be (-3/2-3/2)/(-3/2-3/2) which simplifies to -3/-3 which is 1. The slope is 1.
2nd way: You can just use logic to figure it out because since the x and y in both of the points are equal to each other, we know that the slope has to be 1.
Answer:
It is 1. You would put one in the positive section of the line graph, and put 1 in the negative section of the line graph. ≥ × ≤`
Step-by-step explanation:
≥ × ≤`
i need help with 9/2 divided by 2/9 =
Hope this helps!
Also can I please have Brainliest...?
Only if I'm right of course...
Combine like terms to write a simplified expression:
12p + 11 - 5p + 3
Answer:
7p + 14
Step-by-step explanation:
add 12p and -5p to get 7p
then add 11 and 3 to get 14
your equation will be 7p + 14
here is the answer
7p + 14.
NEED ASAP!!!
Expand the following using the distributive property.
6(-3w + 1/3)
A) -18w + 2
B) 18w + 2
C) 18w – 2
D) -18w – 2
Answer:
A
Step-by-step explanation:
6(-3w+1/3)
-18w+2
Answer:
A
Step-by-step explanation:
6(-3w +1/3)
to distribute you multiply everything inside the parentheses by 6
so
6(-3w) + 6(1/3)
-18w + 6/3
-18w +2
Pls help I’m doing a test
Subtract.
(22 + 43x + 10) - (-102² – 5x+10)
Answers
A. -92? + 38x + 20
B. 11x2 + 38%
C. 11x2 + 483
D. -922 + 487
Select the correct answer. Solve the equation for x in terms of c. 2/3(cx + 1/2) - 1/4 = 5/2
Answer:
x = 29/8c
Step-by-step explanation:
2/3(cx+1/2) - 1/4+ 1/4 = 5/2+1/4
2/3(cx+1/2) = 11/4
1/3(cx+1/2) = 11/4 / 2
cx/3 + 1/2/3 = 11/4/2
cx/3 + 1/2*3 = 11/4/2
cx/3 + 1/6 = 11/4/2
cx/3 + 1/6 = 11/4*2
cx/3 + 1/6 = 11/8
cx/3 = 11/8 - 1/6
cx/3 = 29/24
cx = 29/24 * 3
x = 29/8 / c
x = 29/8c
Water pours into a tank over a 10-minute period. The función f(x) graphed below models the flow rate, in gallon per minute (GPM) Over which of the following intervals does the flow rate increases by the greatest amount?
Answer:
X=0 to x =1
Step-by-step explanation:
Factor completely: 125 x cubed space plus space 343
Answer:
(5x+7)(25x^2-35x+49)
Step-by-step explanation:
Not really an explanation for factoring, but I'm sure it's right.
Parents getting divorced please help and you'll get the brainlliest
Answer:
C
Step-by-step explanation:
I hope this helps!! Feel better
Help me with this plz
Answer:
My final answer is B. Please give me thanks if I'm right.
Step-by-step explanation:
Sup nerds. Do this for me or I'm gonna get screamed at by my mom also show all the work
Answer:
the answer is c they bother are the same and have the same equals
Write 33 x V3
as a
single power of 3.
Answer:
555555
Step-by-step explanation:
Which quadratic equation models the situation correctly?
h(t) = –16t2 + 61
h(t) = –16t2 + 202.5
h(t) = –16t2 + 56t + 5
h(t) = –16t2 + 56t + 6.5
Answer:
D
Step-by-step explanation:
Edge 2020-2021
The quadratic equation {y = - 16t² + 202.5} correctly represents the given graph.
What is a quadratic equation?A quadratic equation is of the form -
f(x) = ax² + bx + c
Given is the graph as shown in the image attached.
The graph given in the image is correctly represented by the quadratic equation -
y = - 16t² + 202.5
Due to the negative coefficient of {a}, it opens downwards. The [y] intercept is at 202.5.
Therefore, the quadratic equation {y = - 16t² + 202.5} correctly represents the given graph.
To solve more questions on credits, visit the link below-
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2 2/3 divided by 1 5/6
ANSWER ASAP
EXPALIN AND BE RIGHT TO BE THE BRAINLIEST
jackson usually makes $250 per week working at a grocery store. Last week he made 60% more than usual. This week Jackson hopes to make 7/8 of what he made last week. how much money does jackson hope to make this week?
Answer: 350
250×.60=150
250+150= 400
7÷8= 0.875
0.875×400=350
I hope this is good enough:
Please help me i will give brainlist please...
Answer: All i know is you have to multiply all of those numbers because its area
Step-by-step explanation:
Solve for x.
56x=15
Enter your answer in the box.
x =
Answer:
The answer is x= 15/56
Step-by-step explanation:
hope that helps you
56x=15
Divide both side by 56 to find the x.
56x/56=15/56
x=15/56
Will give brainliest!
Mrs. Chin paid a 20% tip on the bill for lunch if the tip amount was $2.75 what was the bill for lunch before the tip was added
Answer:
$13.75
Step-by-step explanation:
the bill before the tip is x.
0.20x = 2.75
now divide both sides by .20
x= 2.75/0.20
x=13.75
Simplify each expression
-3m + 16 - (-13m)
15y - 20y + 15
Answer:
10m + 16
-5y + 15
Step-by-step explanation:
-3m + 16 - (-13m) =
= -3m + 16 + 13m
= 10m + 16
15y - 20y + 15 =
= -5y + 15
steve saw 313 birds during a bird-watching trip to Yellowstone National park. he observes 15 more trumpeter swans than sandhill cranes. he saw twice as many mountain chickadees as ducky grouses. how many birds of each type did steve observe if he saw half as many trumpeter swans as ducky grouses
NEED ASAP!
Answer:
Step-by-step explanation:
328
What is 1.3 as a fraction
Answer:
1.3 is pronounced 1 and 3 tenths so the fraction would be 1 3/10
Step-by-step explanation:
Hope this helps