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mamaluj [8]
3 years ago
15

I NeEd ThIs By ToNiGhT

Mathematics
2 answers:
Allushta [10]3 years ago
6 0

Answer:

The answer is 7

Step-by-step explanation:

You take the 3.50+3.50 to get 7. You do this because you want to get 1 full pound. So 1/2+1/2=1 So just double 3.50 (3.5)

Kruka [31]3 years ago
5 0

Answer:

7

Step-by-step explanation:

It's a 1/2 pound, so all you do is double the price. Hope this helped!

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The graph of a system of two linear equations is a pair of lines that intersect at a single point. How many solutions does the s
abruzzese [7]

Answer:

One solution

Step-by-step explanation:

If they intersect at ONE point, that ONE point is the solution for the whole system of linear equations

4 0
3 years ago
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What is the result when 3/8x + 2 1/5 - 3 1/2x - 4 1/10
Anna [14]
It equals to 3/5 and in alternative form is 0.6
6 0
3 years ago
$20 item marked down 40%
sineoko [7]

Answer:

$12

Step-by-step explanation:

8 0
2 years ago
PLEASE HELP
Sholpan [36]
1) We have that the equation is x^2=20y , hence y=x^2/20. The standard equation of such an equation is y=\frac{1}{4p} x^2. Hence, p=5 in this case. The focus is at (0,5) and the directrix is at y=-5 (a tip is that the directrix is always "opposite" the focus point of a parabola; if the directrix is at x=-7 for example, the focus is at (7,0)).
2) Similarly, we have that the equation is x=3y^2 \\  \frac{1}{4p} =3. Thus, p=1/12. In this case, the parabola opens along the x-axis and the focus is at (1/12, 0). Also, the directrix is at x=-1/12. Hence the correct answer is B.
3) We are given that the parabola has a p of 9. Also, the focus lies along the y-axis, hence the parabola is opening along the y-axis. Finally, the focus is on the positive half, so the parabola is opening upwards. The equation for this case is y=y=\frac{1}{4p} x^2= \frac{1}{36 } x^2.
4) Similarly as above. The directrix is superfluous, we only need the p-value. THe same comments about the parabola apply and if we substitute p=8 in the formula: y= \frac{1}{4p} x^2 we get y=\frac{1}{32} x^2.
5) This is somewhat different, even though we do not need the directrix again. The focus lies on the x-axis, thus the parabola opens in this direction. The focus lies on the positive part of the axis, thus the parabola opens to the right. We also are given p=7. Hence, the equation we need is of the formx= \frac{1}{4p} y^2. Substituting p=7, we get x= \frac{1}{28} y^2.
6) The equation of a prabola with a vertex at (0,0) is of the form y=-ax^2. The minus sign is needed since the parabola is downwards. Since we are given anothe point, we can calculate a. We have to take y=-74 and x=14 feet (since left to right is 28, we need to take half). -a= \frac{y}{x^2} = \frac{-74}{14^2} =-0.378. Thus a=0.378. Hence the correct expressions is y=-0.378*x^2
7 0
3 years ago
Read 2 more answers
Answers for the 2 boxes please ​
pochemuha
(-3,-6) this is the answer you can also double check by plugging it into a calculator
6 0
3 years ago
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