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marshall27 [118]
3 years ago
9

The sound of a jet engine of a skyhawk jetfighter is 70000 times louder than the sound of a lawnmower if the lawnmower has the l

oudness of 88db then what is the loudness of the jet engine rounded to the 1DP
Mathematics
1 answer:
Amanda [17]3 years ago
8 0

Answer: 6,160,000 db

Step-by-step explanation:

The sound of a jet engine is 70,000 times louder than that of a lawn mower.

Since we know the sound of a lawnmower, we can multiply that by 70,000 to find the sound of a jet engine:

= Sound of lawnmower * 70,000

= 88 * 70,000

= 6,160,000 db

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A refrigerator costs $1200 wholesale. If the mark-up on the refrigerator is 20%, what is the new price?
shutvik [7]

Answer:

The answer is $960


20% of $1200 is $240

So $1200 - $240 = $960

8 0
3 years ago
Write the point-slope form of the line that passes through (6,1) and is parallel to a line with a slope of -3 include all of you
ycow [4]

<u>Answer: </u>

The point-slope form of the line that passes through (6,1) and is parallel to a line with a slope of -3 is 3x + y – 19 = 0

<u>Solution: </u>

The point slope form of the line that passes through the points \left(x_{1} y_{1}\right) and parallel to the line with slope “m” is given as  

y - y_{1} = m\left(x - x_{1}\right) --- eqn 1

Where “m” is the slope of the line. x_{1} \text { and } y_{1}are the points that passes through the line.

From question, given that slope “m” = -3

Given that the line passes through the points (6,1).Hence we get x_{1} = 6 ; y_{1} = 1

By substituting the values in eqn 1, we get the point slope form of the line which is parallel to the line having slope -3 can be found out.

y – 1 = -3(x – 6)

y – 1 = -3x +18

On rearranging the terms, we get

3x + y -1 – 18 = 0

3x + y – 19 = 0

Hence the point slope form of given line is 3x + y – 19 = 0

8 0
3 years ago
See the question below.
zheka24 [161]

your answer is B i hope this helpss

4 0
3 years ago
Read 2 more answers
Write the following in terms of sin θ only.<br> cot θ
sveta [45]
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6 0
3 years ago
What is the slope of the line that
kherson [118]

Answer:

The value of the slope is 6

Step-by-step explanation:

To get the slope of the line, we are going to make use of the slope equation

Mathematically, we have this as;

m = (y2-y1)/(x2-x1)

where (x1,y1) = (1,2) and (x2,y2) = (2,8)

Substituting these values;

m = (8-2)/(2-1) = 6/1 = 6

4 0
2 years ago
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