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Solnce55 [7]
3 years ago
13

What’s the simplest from of 21:28

Mathematics
2 answers:
Komok [63]3 years ago
6 0
The simplest form of 21:28 is 3:4. you just divide both numbers by the greatest common factor.
Fed [463]3 years ago
6 0

Answer:

3/4

Step-by-step explanation:

You need to find the greatest factor. Divide it with both denominator and numerator by the greatest factor in order to simplify the form.

OR..

you can use your Tl-30XIIS calculator and do.. "21 A b/c ( the button) 28"

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Please explain how you came to your answer, need help ASAP. Will give brainliest
shusha [124]
The vertex is the high point of the curve, (2, 1). The vertex form of the equation for a parabola is
.. y = a*(x -h)^2 +k . . . . . . . for vertex = (h, k)

Using the vertex coordinates we read from the graph, the equation is
.. y = a*(x -2)^2 +1

We need to find the value of "a". We can do that by using any (x, y) value that we know (other than the vertex), for example (1, 0).
.. 0 = a*(1 -2)^2 +1
.. 0 = a*1 +1
.. -1 = a

Now we know the equation is
.. y = -(x -2)^2 +1

_____
If we like, we can expand it to
.. y = -(x^2 -4x +4) +1
.. y = -x^2 +4x -3

=========
An alternative approach would be to make use of the zeros. You can read the x-intercepts from the graph as x=1 and x=3. Then you can write the equation as
.. y = a*(x -1)*(x -3)
Once again, you need to find the value of "a" using some other point on the graph. The vertex (x, y) = (2, 1) is one such point. Subsituting those values, we get
.. 1 = a*(2 -1)*(2 -3) = a*1*-1 = -a
.. -1 = a
Then the equation of the graph can be written as
.. y = -(x -1)(x -3)
In expanded form, this is
.. y = -(x^2 -4x +3)
.. y = -x^2 +4x -3 . . . . . . same as above
5 0
3 years ago
What does 3-3x6+2 equal?
Mama L [17]
You do 3x6 first to get 18.

You get 3-18+2.

Then you do 3-18 which is -15.

You get -15+2.

Then you do -15+2 which is -13.

It equals -13.
3 0
2 years ago
Read 2 more answers
A cereal box can hold 144 cubic inches of of cereal. Suppose the box is 8 inches long and
Korvikt [17]

Answer: \\ Volume \:  of \:  the \:  box:V = lwh \\ \Rightarrow h =  \frac{V}{lw}  =  \frac{144}{8 \times 1.5}  =  \frac{144}{12}  = 12 \\ \Rightarrow The  \: box's  \: height:12 \:  inches

5 0
2 years ago
6у – 6 = 4у + 16<br> A.y=2.2<br> B. y= -2.2<br> C. у= 11<br> D. у= 5
Korvikt [17]

Answer:

C. y=11

Step-by-step explanation:

6y-6=4y+16

6y=4y+22

2y=22

y=11

7 0
2 years ago
A designer builds a model of a sports car. The finished model is exactly the same shape as the original, but smaller. The scale
lesantik [10]

Answer:

Ratio = 2 : 15

Step-by-step explanation:

Given

k = 2 : 15 --- scale factor

Required [missing from the question]:

The ratio of width of the model to the original

From the question, we understand that the scale factor is: 2 : 15

The ratio of the width of the model to the original equals the given scale factor i.e.

Ratio = 2 : 15

8 0
2 years ago
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