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3 years ago

What’s the answer to this?

Mathematics

1 answer:

USPshnik [31]3 years ago

4 0

Answer:

<D is congruent to <B

Step-by-step explanation:

They both have the 3 lines indicated on them

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Please help !! you don’t need to explain btw !! :))

soldier1979 [14.2K]

All except for the third option are correct

7 0

2 years ago

Graph a parabola whose x-intercepts are at x=-3 and x=5 and whose minimum value is y=-4

docker41 [41]

Answer:

(See explanation for further details)

Step-by-step explanation:

The standard equation of the parabola is:

$y + 4 = C \cdot (x-k)^{2}$

The formula is now expanded into a the form of a second-order polynomial:

$y + 4 = C\cdot x^{2} -2\cdot C\cdot k \cdot x +C\cdot k^{2}$

$y = C\cdot x^{2} - (2\cdot C \cdot k) \cdot x + (C\cdot k^{2}-4)$

The general equation of the second-order polynomial is:

$x = \frac{2\cdot C \cdot k \pm \sqrt{4\cdot C^{2}\cdot k^{2}-4\cdot C\cdot (C\cdot k^{2}-4)}}{2\cdot C}$

$x = k \pm \frac{\sqrt{C^{2}\cdot k^{2}-C^{2}\cdot k^{2}+4\cdot C}}{C}$

$x = k \pm 2\cdot \frac{\sqrt{C}}{C}$

$x = k \pm \frac{2}{\sqrt{C}}$

The equations to be solved are presented herein:

$-3 = k -\frac{2}{\sqrt{C}}$

$5 = k + \frac{2}{\sqrt{C}}$

Now, the solution of the system is:

$-3 +\frac{2}{\sqrt{C}} = 5 -\frac{2}{\sqrt{C}}$

$\frac{4}{\sqrt{C}} = 8$

$\sqrt{C} = \frac{1}{2}$

$C = \frac{1}{4}$

$k = 5 - \frac{2}{\sqrt{\frac{1}{4} }}$

$k = 1$

The equation of the parabola is:

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

Lastly, the graphic of the function is included as attachment.

3 0

2 years ago

Which is higher 1.5 or 5

myrzilka [38]

Answer:

Step-by-step explanation:

5 divided by 1.5 = 3.3333 which means that since 1.5 can fit into 5 several times 5 is automatically greater.

4 0

2 years ago

Read 2 more answers

Which is a y-intercept of the continuous function in the table?

Sonja [21]

Answer:

(0,5)

pretty sure thats right

8 0

3 years ago

A store polled its customers about the fit of jeans they preferred. the two-way frequency table shows the result of the poll.

Rzqust [24]

Answer: Upper right corner

You divide every value in the table over 120 as 120 is the grand total

So we have 28/120 = 0.23 in row 1, column 1

Then we have 14/120 = 0.12 in row 1, column 2

etc etc

5 0

3 years ago