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irina1246 [14]
3 years ago
7

The vertex of this parabola is at (5, -4). Which of the following could be its equation? A.y = 2(x + 5)2 + 4

Mathematics
2 answers:
astraxan [27]3 years ago
4 0
I think d or b but if I am wrong sorry
Svetradugi [14.3K]3 years ago
3 0

Answer:

answer was D :)

Step-by-step explanation:

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What is the slope intercept
Andreas93 [3]

Answer:

y=mx+b

Step-by-step explanation:

Slope intercept form is a type of way to display an equation.

The variable m represents slope. Slope is the angle of the line.

The variable b represents the Y-intercept. This is the point where the line crosses the Y axis..

4 0
3 years ago
HEY CAN ANYONE PLS ANSWER DIS MATH QUESTION!!!!!!!
GenaCL600 [577]

Answer:

Up to 10

Step-by-step explanation:

  • Cost of fish = $3.99
  • Limit of money = $40
  • Number of fish = x

<u>Inequality:</u>

  • 3.99x ≤ 40
  • x ≤ 40/3.99
  • x ≤ 10.02
3 0
3 years ago
Construct the confidence interval for the population standard deviation for the given values. Round your answers to one decimal
Alex777 [14]

Answer:

The correct answer is "2.633< \sigma < 4.480".

Step-by-step explanation:

Given:

n = 21

s = 3.3

c = 0.9

now,

df = n-1

    =20

⇒ x^2_{\frac{\alpha}{2}, n-1 } = x^2_{\frac{0.9}{2}, 21-1 }

                  = 31.410

⇒ x^2_{1-\frac{\alpha}{2}, n-1 } = 10.851

hence,

The 90% Confidence interval will be:

= \sqrt{\frac{(n-1)s^2}{x^2_{\frac{\alpha}{2}, n-1 }} } < \sigma < \sqrt{\frac{(n-1)s^2}{x^2_{1-\frac{\alpha}{2}, n-1 }}

= \sqrt{\frac{(21-1)3.3^2}{31.410} } < \sigma < \sqrt{\frac{(21.1)3.3^2}{10.851} }

= \sqrt{\frac{20\times 3.3^2}{31.410} } < \sigma < \sqrt{\frac{20\times 3.3^2}{10.851} }

= 2.633< \sigma < 4.480

4 0
2 years ago
Could someone help with this i need it badly
Marrrta [24]

Answer:

How can l help you?????????

7 0
3 years ago
Evaluate the function for x=4 <br> F(x)= x^3+2x^2+1
alukav5142 [94]

Answer:

F(4) = 97

Step-by-step explanation:

F(x)= x³+2x²+1

when x = 4

F(4)= 4³+2(4²)+1

= 4³+2(4²)+1

= 64 + 2(16) + 1

= 64 + 32 + 1

= 97

8 0
3 years ago
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