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Oksi-84 [34.3K]
3 years ago
6

Great White shark sightings are on the rise. In 2002, there were 140 but that number has increased by 150%. What is the new numb

er of Great White shark sightings? ​
Mathematics
1 answer:
stealth61 [152]3 years ago
6 0

Answer:

350

Step-by-step explanation:

Step 1: 100% of 140=280

Step 2: 50% of 140=70

Step3: So New number of Great White shark sightings=350

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A rectangular plot measures 20 ft. By 30ft. A 3ft wide side walk surrounds it. Find the area of the side walk
r-ruslan [8.4K]

Answer:

336 feet²

Step-by-step explanation:

If we have a rectangle that is 30 by 20 feet, that means the area of that rectangle would be 20 × 30 feet squared, which is 600 ft².

If there is a 3 feet sidewalk surrounding it, that means that the end of the sidewalk will extend 3 feet extra around each side of plot. Since there are two ends to one side, that means an extra six feet is added on to each dimension. Therefore, 36 × 26 are the dimensions of the sidewalk+plot. 36 × 26 = 936 ft².

To find the area of the sidewalk itself, we subtract 600 ft² from 936 ft². This gets us with 336 ft².

Hope this helped!

3 0
2 years ago
In a right triangle, the acute angles measure 2x+50 and 3x degrees
xenn [34]
2x+50 + 3x= 90 degrees
5x +50 = 90
5x =40
x=8

Angle1= 2(8) +50= 66
Angle2= 3(8)=24

66+24+90= 180
6 0
2 years ago
Read 2 more answers
The sum of two numbers is 53 and the difference is 11. What are the numbers?
vaieri [72.5K]
Let assume that the the two numbers are X and Y and that X is the large number.
According to the question, 
X + Y = 53 .................. Equation 1
then,  X = 11 + Y........... Equation 2
Substitute equation 2 into equation 1.
[11 + Y] + Y = 53
11 + 2Y = 53
2Y = 53 - 11 = 42
2Y = 42
Y = 42 / 2 = 21,
Therefore, Y = 21 [Small number].
According to equation 1, 
X +Y = 53
X + 21 = 53
X = 53 - 21 = 32.
Therefore, X = 32 [Big number].



4 0
2 years ago
When solving the system of equations 3x−3y=1 and −2x+4y=2 algebraically, a good first step is to:
bearhunter [10]

Answer:

A. Multiply 3x−3y=1 by 2, and multiply −2x+4y=2 by 3.

Step-by-step explanation:

Given

3x - 3y = 1

-2x+ 4y = 2

Required

A good first step

A good first step is to eliminate x and this is done as follows:

Multiply 3x - 3y = 1 by 2 (gotten from coefficient of x in the second equation)

Multiply -2x+ 4y = 2 by 3 (gotten from coefficient of x in the first equation)

This gives:

6x - 6y = 2

-6x + 12y = 6

Add both equations

6x - 6x - 6y + 12y = 2 + 6

6y = 8

y = \frac{4}{3}

<em>Hence (a), is true</em>

5 0
3 years ago
The table of values below shows the rate of water consumption in gallons per hour at selected time intervals from t = 0 to t = 1
ad-work [718]
31.7 is the answer. Do you need any explanation? 
5 0
3 years ago
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