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Romashka-Z-Leto [24]
3 years ago
13

The length of a photograph is 1 cm less than twice the width. The area is 91cm^2. Find the width and length.

Mathematics
1 answer:
Brums [2.3K]3 years ago
7 0
Let the width = x
=>length = 2x-1

91= x(2x-1)=2x^2-x
2x^2-x-91=0
=(2x+13)(x-7)
=> x=-13/2=> no
=>x= 7 cm
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it means 4 times 1/3x

4x/3

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if there are four trucks parked in line and after the first truck each truck weighed 2 more tons than the one before. They all w
algol13
Each truck weighs five tons. 

1st truck: n 
2nd truck: n + 2
3rd truck: n + 4
4th truck: n + 6 

n + n + 2 + n + 4 + n + 6 = 32 
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      - 12   - 12
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4n = 20 
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What is the solution set to <br> 4x – 8 = 9x + 2
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6 0
3 years ago
Read 2 more answers
Find the sum of f(4) + g(-5) when f(x) = 4x - 3 and g(x) = -2x + 10 ​
Andreas93 [3]

Answer:

33

Step-by-step explanation:

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g(-5) = -2(-5) + 10  =  10 + 10  =  20

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8 0
3 years ago
The numerator of a certain fraction is to its denominator as 2 to 3; if 5 be added to the numerator the ratio will be as 3 to 2;
vova2212 [387]
N= numerator
D= denominator

N:D ==> 2:3

2:3, 4:6, 6:9... And so on...

The pattern here is that the numerator increases by 2 and the denominator by 3. Easy right?

Now 5 is added to the "n".

Now it is N:D ==> 3:2

3:2, 6:4, 9:6... And so on...

The pattern here is inverted then the 2:3 one.

If I'm right then which one (you might have to continue the process/pattern) then one of them will increase by 5.

3 => 2 = +1 (2+1=3)
6 => 4 = +2 (4+2=6)
9 => 6 = +3 (6+3=9)
12 => 8 = +4 (8+4=12)
15 => 10 = +5 (10+5=15)
18 => 12= +6 (12+6=18)

Q. Which one is +5?

A. 15:10

That is what "I" think it is.

Now, the question is,
Does it work? Does it fit the above description?

Q. Does it even work? Does it fit the above description?
6 0
2 years ago
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