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2 years ago

I need help with 5,6,7 please

Mathematics

1 answer:

dedylja [7]2 years ago

8 0

Answer:

5. x = -17

6. x = 5

7. x = 23

Step-by-step explanation:

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I need help for number 49

Dmitry_Shevchenko [17]

I'm thinking it's B for that question

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2 years ago

The vertex of this parabola is at (-5, -2). When the x-value is -4, the y-value is 2. What is the coefficient of the squared exp

Montano1993 [528]

Answer:

The coefficient of the squared expression in the parabola equation is $a=4$

Step-by-step explanation:

The equation of a parabola in its vertex form is:

$y = a(x-h) ^ 2 + k$

Where the vertex of the parabola is the point (h, k)

a is the ceoficiente of the term to the square.

We need to find the equation of a parabola that has its vertex in the point:

(-5, -2)

So:

$h = -5\\\\k = -2$

Therefore the equation is:

$y = a(x - (-5)) ^ 2 -2\\\\y = a(x + 5) ^ 2 -2$

We know that the point (-4, 2) belongs to this parable. Then we can find the value of a by replacing the point in the equation of the parabola

$(2) = a((-4) + 5) ^ 2 -2\\\\2 = a(1) ^ 2 -2\\\\2 = a -2\\\\a = 4$

Finally the coefficient is a = 4

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3 years ago

PLS HURRY Kimberly had p coins. Then she found 5 more coins in a drawer. Write an expression that

stellarik [79]

Answer: p + 5 = new amount

Step-by-step explanation:

You have to write it the way it's read

she has p = current coins

she found 5 more, ( +5 )

write that down and you get p + 5 = new amount

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2 years ago

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Answer:

Step-by-step explanation:

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Answer:

Step-by-step explanation:

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