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Alex787 [66]
3 years ago
6

Ralf and Susie share $57 in the ratio 2:1. (a) Calculate the amount Ralf receives.

Mathematics
2 answers:
Mnenie [13.5K]3 years ago
4 0

Answer:

<h3>.Total ratio 2+1 = 3</h3>

<h3><u>Ralf</u><u> </u></h3>

<h3>2/3 × 57</h3><h3>Divide 57 by 3</h3><h3>( 2 × 19)</h3><h2><u>=</u><u> </u><u>3</u><u>8</u><u>.</u><u>.</u><u>.</u><u>.</u></h2><h3><u>Ralf</u><u> </u><u>recieves</u><u> </u><u>$</u><u> </u><u>3</u><u>8</u></h3>
Semmy [17]3 years ago
4 0

Answer:

Raff = 38

Suzie = 19

Step-by-step explanation:

Raff gets 2x

Suzie gets x

2x + x = 57 dollars

3x = 57 dollars

x = 19 dollars

2x = 38 dollars

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It has been said that newspapers are disappearing, replaced by various electronic media. In 2004, newspaper circulation (the num
shutvik [7]

Answer:

A. y=-1.2x+59

B. 42.2 million

Step-by-step explanation:

Part A:

Given:

Newspapers circulated in year 2004, y_{1}=59\textrm{ million}

Newspapers circulated in year 2014, y_{2}=47\textrm{ million}

Let the time x start at the year 2004. So, x_{1}=0

For the year 2014, x_{2}=2014-2004=10

Therefore, linear relationship between newspapers circulated and time passed since 2004 is given as:

y-y_{1}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}(x-x_{1})\\y-59=\frac{47-59}{10-0}(x-0)\\y-59=-\frac{12}{10}x\\y=-1.2x+59

Therefore, the equation describing the relationship is: y=-1.2x+59

Part B:

For the year 2018, x=2018-2004=14

Plug in 14 for x in the above equation and solve for y. This gives,

y=-1.2(14)+59\\y=-16.8+59\\y=42.2

Therefore, in the year 2018, the newspaper circulation will be 42.2 million.

8 0
3 years ago
Describe the possible side lengths of the 3rd side of the triangle given the lengths of the 2 other sides?
Sindrei [870]
Heya !

Using a theoram about triangles ,

Given a triangle ∆ABC, the sum of the lengths of any two sides of the triangle is greater than the length of the third side ,

Also , the length of third side always greater than absolute difference of the other two sides ,

Let the third side be x ,

So , x < 9 + 8 and x > 9 - 8
x < 17 and x > 1

Hence , x ∈ [ 2 , 17 ] inch.

Above case is true for any triangle , be it scalene , Isosceles , Right-angled ...

As , for Isosceles , the third side can be 8 or 9 inches ,
For scalene , all values in the above range satusfies ,

For right angled triangle , we have 2 cases ,

Case 1 : Third side is the hypotenuse
Then , x = √(9²+8²) = √145 = 12.0415 inch.

Case 2 : Third side is not the hypotenuse
Then , x = √(9²-8²) = √17 = 4.1231 inch.

Hope it helps you ! :)
8 0
3 years ago
Read 2 more answers
Pls help, will give brainleist
Andrei [34K]
The answer is 5.
Because take x=1 entry to the graph and going vertical until you intercept the curve, then read the value on the y axial
5 0
2 years ago
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Help please mathematics photos
Nady [450]
Y = 4x - 3
y = 1/3x + 4
y = -4/5x + 5
y = 3x + 10
4 0
3 years ago
PLEASE PLEASE HELP ME PLEASE I AM SO DUM I DONT KNOW THE ANSWER PLEASE JUST HELP ME
pogonyaev

Answer:

Cougar population was 790 at the beginning

830-790=40

3 0
3 years ago
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