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marishachu [46]
3 years ago
10

(Please help!) Which pair of ratios form a proportion?

Mathematics
1 answer:
romanna [79]3 years ago
8 0
10:20 and 20:30 form a ratio
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Write an equation for the parabola whose vertex is at (3, 6) and which<br> passes through (4, 4).
34kurt

Answer:

<h3>            f(x) = -2 (x - 3)² + 6</h3>

Step-by-step explanation:

The vertex form of the equation of the parabola with vertex (h, k)  is:

f(x) = a(x - h)² + k

so the equation of parabola with the vertex (3, 6) is

f(x) = a(x - 3)² + 6  

passes through the point (4, 4) means: if x=4 then f(x)=4

4 = a(4 - 3)² + 6  

4 -6 = a(1)² + 6 -6

-2 = a

Therefore the equation of parabla is:

                                 <u> f(x) = -2 (x - 3)² + 6  </u>

6 0
3 years ago
-18y + 7 = -29. What does y equal. (I’m very bad at math)
Olin [163]

Answer:

y=2 (correct if wrong)

Step-by-step explanation:

-18y + 7 = -29

-7 -7

-18y = -36

-18/-18 -36/-18

4 0
3 years ago
Read 2 more answers
Steve is managing a skate park and has been analyzing the attendance data. Steve has found that the number of visitors increases
SashulF [63]

Answer:

Suppose that the equations are:

The number of people increases exponentially as the temperature increases, so we can write this as a simple exponential relation.

N(T) = a0*r^(T)

Also, the number of people that leaves the park as the temperature increases are:

M(T) = a*T + b

So the combination of these equations can say the number of people that are arriving to the park minus the number of people that are leaving, this would be:

N(T) - M(T) = total change in the park population as the temperature changes = C(T)

C(T) = a0*r^(T) - a*T - b

5 0
3 years ago
Read 2 more answers
I don't understand this question. I was hoping someone could help.​
iris [78.8K]

Answer:

A

Step-by-step explanation:

The constant rate of change in this question simply means the slope

To get the slope, we simply get two points and apply the slope equation;

The points are;

(3,60) and (6,30)

The slope equation is;

m = (y2-y1)/(x2-x1) = (30-60)/(6-3) = -30/3 = -10 ft/s

So our answer is the first option as it represents a decent of -10 ft/s

8 0
3 years ago
Matthew bought snacks for soccer team. He bought a bag of apple slices for $5.65, and he bought a 12 pack of Gatorade bottles. T
agasfer [191]

Answer:

6.48/12=B

Step-by-step explanation:

B=6.48

6.48/12=0.54

Each Gatorade bottle costs 54 cents.

5 0
4 years ago
Read 2 more answers
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