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3 years ago

How do u write a expression

Mathematics

2 answers:

Irina18 [472]3 years ago

8 0

Answer:

Writing an expression is basically like writing the same thing you hear or read ( contains numbers ).

zhuklara [117]3 years ago

3 0

Answer:

<h2><u>it depends on what expression u want </u></h2>

Step-by-step explanation:

An example of a mathematical expression with a variable is 2x + 3. All variables must have a coefficient, a number that is multiplied by the variable. In the expression 2x + 3, the coefficient of x is the number 2, and it means 2 times x plus 3.

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Find the equation, (f(x) = a(x - h)2 + k), for a parabola containing point (2, -1) and having (4, -3) as a vertex. What is the s

postnew [5]

Given that the vertex of the parabola is (4,-3)

The parabola passes through the point (2,-1)

We need to determine the standard form of the equation of the parabola.

<u>Standard form of the equation of the parabola:</u>

The standard form of the equation is $y=a(x-h)^2+k$ where the vertex is (h,k) and a is the constant.

Substituting the vertex (4,-3) in the above equation, we get;

$y=a(x-4)^2-3$ ---------------(1)

Substituting the point (2,-1) in the above equation, we have;

$-1=a(2-4)^2-3$

$-1=a(-2)^2-3$

$-1=4a-3$

$2=4a$

$\frac{1}{2}=a$

Thus, the value of a is $\frac{1}{2}$

Substituting the value of a in the equation (1), we get;

$y=\frac{1}{2}(x-4)^2-3$

Thus, the standard form of the equation of the parabola is $y=\frac{1}{2}(x-4)^2-3$

3 0

3 years ago

Can somebody explain to me how to do problem 1?

Brut [27]

Answer:

Two spaces left

Step-by-step explanation:

Basically, you have to plot the points on the graph. The first number in the brackets is the x value and the other one is the y value. You would plot -2 on the x-axis. Since the other value is 0, you have to move left two spaces.

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3 years ago

For the function y=-3+4 cos(5pi/6(x+4)) what is the minimum value

Vikentia [17]

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3 years ago

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