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2 years ago

Please help me i need this badly show work if you could

Mathematics

1 answer:

Rufina [12.5K]2 years ago

8 0

Answer:

a: 4

b: 5 is alone, p, -4p and 5p are in the same group, and 7q is alone
c: 2uv squared and -uv squared are in the same group. Everything else is alone.

Step-by-step explanation:

4 is multiplied by y. Kinda self explanatory.

Even though p doesnt have a number before it, it still does. Variables always have coefficients, and if you can't see it, that means it's one.
uv squared is one of the terms, so any number before it makes it part of the group. Everything else is not similar, so you got your answer.

I don't know what grade you are in, but I'm guessing your in a low grade, so sorry if I was unclear.

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Answer:

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Step-by-step explanation:

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3 years ago

The graph of a function is a parabola that has a minimum at the point (-3,9). Which equation could represent the function?

Scilla [17]

Answer:

$g(x)=2(x+3)^2+9$ , which corresponds to answer D.

Step-by-step explanation:

Recall that the maximum or minimum of a parabola is always located at its vertex. Notice that all quadratic functions listed are given in what is called "vertex" form, since they explicitly show the vertex coordinates in their formulation:

$f(x)=a(x-x_v)^2+y_v$ where $x_v$ , and $y_v$ stand for the x and y coordinates respectively of the vertex.

Examining all four options, we notice that in all four cases listed, the $y_v$ is correct (equal to positive 9), so we proceed to examine what the $(x-x_v)^2$ expression should look like for $x_v=-3$ :

Notice that when replace $x_v$ with "-3", we end up with a sign change:

$(x-x_v)^2\\(x-(-3))^2=(x+3)^2$

Therefore we find that the last two options can be candidates. Then we recall that the question also states that this should be a minimum. Then, for a parabola to have a minimum, its branches must go upwards, and this corresponds to a case in which the factor $a$ (leading coefficient) multiplying (x-x_v)^2 is positive. So in looking for such condition, we find that the very last option is the only one that verifies such.

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4 years ago

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ValentinkaMS [17]

Answer:

$cos(33^{\circ})$

Step-by-step explanation:

Given

$sin(57^{\circ})$

Required

Determine an equivalent expression

In trigonometry:

$sin(\theta)= cos(90^{\circ} - \theta)$

In $sin(57^{\circ})$

$\theta=57^{\circ}$

Substitute $57^{\circ}$ for $\theta$

in $sin(\theta)= cos(90^{\circ} - \theta)$

$sin(57^{\circ})= cos(90^{\circ} - 57^{\circ})$

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Hence, the equivalent expression is: $cos(33^{\circ})$

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4 years ago

Marina86 [1]

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3 years ago

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Answer:

Step-by-step explanation:

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3 years ago