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NARA [144]
3 years ago
13

Match the parabolas represented by the equations with their foci. Tiles y = -x2 + 4x + 8 y = 2x2 + 16x + 18 y = -2x2 + 5x + 14 y

= -x2 + 17x + 7 y = 2x2 + 11x + 5 y = -2x2 + 6x + 5 Pairs Focus Equation of Parabola (-2.75, -10) arrowBoth (2, 11.75) arrowBoth (-4, -13.875) arrowBoth (1.25, 17) arrowBoth
Mathematics
1 answer:
alexdok [17]3 years ago
7 0
Given:
<span>y = -x2 + 4x + 8
y = 2x2 + 16x + 18
y = -2x2 + 5x + 14
y = -x2 + 17x + 7
y = 2x2 + 11x + 5
y = -2x2 + 6x + 5 

Standard formula : y = ax</span>² + bx + c  ;  -(b/2a) is the x-coordinate of the vertex. Substitute the value of x to find the value of y.

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A school will have a fall festival if at least 40% of the 500 students plan to attend. How many students must agree to attend in
artcher [175]

Answer:

200 students must agree to attend in order for the school to have the festival.

Step-by-step explanation:

200 is 40% of 500. We can also use fractions to figure this out.

\frac{40}{100} =\frac{x}{500}

For 100 to become 500 it must be multiplied by 5. And whatever we do to the denominator we have to do to the numerator. So we multiply 40 × 5 = <em>x</em>

<em>x</em> = 200

\frac{40*5}{100*5} = \frac{x}{500}      

\frac{40}{100} =\frac{200}{500}

7 0
3 years ago
A rectangle has length X +5 and width X +4 if the perimeter of the rectangle is 42 m what are the length and width of the rectan
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The perimeter is 2(length) + 2(width), so 2(x+5) + 2(x+4) = 42 m. In solving for x, you find 6. Plug 6 back into your length and width where x originally was, and you find your length to be 11m, and your width to be 10m. Hope this helps!
6 0
3 years ago
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If 27 x 34 = n, then which division equation is also true?
Nitella [24]

27 x 34 = 918

Correct division Equations are:

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2 years ago
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Answer:

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Step-by-step explanation:

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8 0
3 years ago
Which of the following tables shows the correct steps to transform x^2+8x+15=0 into the form of (x-p)^2=q (p and q are integers)
Montano1993 [528]
<span>The best and most correct answer among the choices provided by the question is the third choice:
table 3:
step 1.x^2+8x+15+1=0+1
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<span>step 3.(x+4)^2=1</span>

I hope my answer has come to your help. God bless and have a nice day ahead!</span>
8 0
3 years ago
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