ballroom dance. There are 9 students who prefer tap dance. Which equation can be used to
find the number of boys ( x) who participated in the survey?
A. 0.2 x + 25 = 9
B. 0.2( x + 25) = 9
C. 0.2(25 – 9) = x
D. 25 + x = 0.2 × 9
The number of gold fishes which are more than guppies are:
15
Let the number of guppies in the fish tank =x
and it is given that:
There are 6 times as many goldfish as guppies.
This means that the number of goldfishes in the tank are: 6x
Also, it is given that:
There are a total of 21 fish in the tank.
i.e.
Hence,
This means that:
There are 15 (18-3=15) more goldfishes in the tank then guppies.
There are 15 moregoldfish than guppies in Sean's fish tank.
We have,
Let's assume the number of guppies in the tank is 'g'.
According to the given information, the number of goldfish is 6 times the number of guppies, which can be expressed as:
Number of goldfish = 6g
The total number of fish in the tank is given as 21:
Number of goldfish + Number of guppies = 21
Substituting the expression for the number of goldfish, we get:
6g + g = 21
Combining like terms, we have:
7g = 21
To solve for g, we divide both sides of the equation by 7:
g = 21 / 7
g = 3
Therefore, there are 3 guppies in the tank.
To find the number of goldfish, we substitute the value of g back into the expression for the number of goldfish:
Number of goldfish = 6g
Number of goldfish = 6 * 3
Number of goldfish = 18
The difference between the number of goldfish and guppies is:
Number of goldfish - Number of guppies = 18 - 3 = 15
Therefore,
There are 15 moregoldfish than guppies in Sean's fish tank.
Learn more about expressions here:
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Answer:
Step-by-step explanation:
If it's parallel, that means it has the same slope: -1/5.
Use point-slope form to write the equation:
y - 4 = -1/5 (x - 7)
If you wish to write in point-intercept form:
y - 4 = -1/5 x + 7/5
y = -1/5 x + 27/5
If two lines are parallel, it means that they will have the same gradient:
And remember, the equation of a line is y = mx +c
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So we know that the equation of the parallel line is:
y = - x + c through point (7, 4)
All we need to do now is to work out what c is
Note: at point (7,4) x = 7 , and y = 4.
So to work out c, we substitute in the values of x and y, and solve:
y = - x + c
4 = - * 7 + c
4 = -1.4 + c
5.4 = c
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Finally, we just put the value of c back into the original equation
y = - x + 5.4
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Answer:
The equation of the a line parallel to y = - x + 3 through point (7,4)
is: y = - x + 5.4
Your answer would be d because 3/4 is repeated 3 times
It is d because it matches up exactly to each of the repeating numbers and it shows teh correct amount of x's for each number