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Marizza181 [45]
3 years ago
6

The denominator of a fraction exceeds the numerator by 7. If 3 is added to the numerator and 1 is subtracted from the denominato

r, the resulting fraction is equal to 4/5 . Find the original fraction.

Mathematics
2 answers:
mylen [45]3 years ago
8 0
Hey there. find an image attached.

tino4ka555 [31]3 years ago
3 0
Please nevermind I got x to be 9 as well but forgot to attach the picture and cannot do it anymore sorry :(
 
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Uhh solve the question? i hope i find some haikyuu stans out there✌️
musickatia [10]

Answer and Step-by-step explanation:

(\frac{1.25 - x}{1.25x} ) * 100\\\\\\(\frac{1.25}{1.25x} - \frac{x}{1.25x} ) * 100\\\\(\frac{1}{x} - \frac{1}{1.25} ) * 100\\\\\frac{100}{x} - 80\\\\\\

Decreased by 20%

7 0
3 years ago
Read 2 more answers
The ratio of girls to boys at a movie is 5 : 4. If there are 12 boys​, how many girls are at the​ movie?
dalvyx [7]

Answer:

12/5 is 2.4 so

9 girls I think.

Step-by-step explanation:

8 0
3 years ago
What are the vertex focus and directrix of a parabola with equation x=y^2+14y-2
zimovet [89]
This is a sideways opening parabola, opening to the right to be more specific, since the leading coefficient is a positive 1.  The rule for a focus and a directrix is that they are the same number of units from the vertex (in other words, the vertex is dead center between them), and that the vertex is on the same axis that the focus is.  We need to find the vertex then to determine what the focus and the directrix are.  We will complete the square on that to find the vertex.  Begin by setting it equal to 0, then move the 2 over by addition to get y^2+14y=2.  Now we will complete the square on the y terms.  Take half the linear term, square it, and add it to both sides.  Our linear term is 14.  Half of 14 is 7, and 7 squared is 49. So we add 49 to both sides. y^2+14y+49=2+49, which of course simplifies to y^2+14y+49=51.  The purpose of this is to find the k coodinate of the vertex which will be revealed when we write the perfect square binomial we created during this process: (y+7)^2=51.  Moving the 51 back over by subtraction gives us (y+7)^2-51=x.  The vertex then is (-51,-7).  The formula to find the focus using this vertex is (h+ \frac{1}{4a},k).  As I stated quite a while ago, the leading coefficient on our parabola was a +1 so our "a" value is 1, and the focus is then found in (-51+ \frac{1}{4},-7) which simplifies to (-50.75, -7).  If the vertex is (-51, -7) and the focus is (-50.75, -7), then the distance between them is 1/4, or .25.  That means that the directrix is also .25 units from the vertex, but in the other direction.  Our directrix is a vertical line, and it will have the equaion x = -51.25.  Summing up, your focus is (-50.75, -7) and your directrix is x = -51.25
7 0
3 years ago
Select ALL the correct answers.
Alona [7]
Income of the first account after x years:
1,850(1.026)^x
Income of the second account after x years:
2,015(1.015)^x
Equating the above tw values we get the equation:
1,850(1.026)^x=2,015(1.015)^x
Solving the above equation for x:
x=8
Answer 8 years. 
4 0
3 years ago
Read 2 more answers
If Javier has a car with a mass of 250,000 kg and it is acted upon with a force of 300 Newtons. What is the acceleration?
natima [27]

Answer:

<u>The acceleration is 0.0012 meters/seconds²</u>

Step-by-step explanation:

1. Let's review the information given to answer the question correctly:

Mass = 250,000 kg

Force = 300 Newtons

2. What is the acceleration?

Based on Newton's Second Law of Motion, let's recall that:

Force = Mass * Acceleration

Acceleration = Force/Mass

Replacing with the real values, we have:

Acceleration = 300/250,0000

Acceleration = 0.0012 meters/seconds² (we can't express acceleration using Newtons/kilograms as the unit).

8 0
3 years ago
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