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3 years ago

I need help with these questions

Mathematics

1 answer:

Katen [24]3 years ago

8 0

The answer is c! As CBA & ZXY is not only a full triangle, but its written incorrectly.

ABC → CBA
XYZ → ZYX (not ZXY)

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Identify the vertex and directrix of each. y = x2 + 2x - 4

sergey [27]

Answer:

See below

Step-by-step explanation:

Convert equation to vertex form $y=(x-h)^2+k$ by completing the square:

$y=x^2+2x-4$

$y+5=x^2+2x-4+5$

$y+5=x^2+2x+1$

$y+5=(x+1)^2$

$y=(x+1)^2-5$

Vertex:

$(h,k)\rightarrow(-1,-5)$

Directrix:

$y=k-\frac{1}{4a}\rightarrow y=-5-\frac{1}{4(1)}\rightarrow y=-\frac{21}{4}$

8 0

2 years ago

Which is a solution to the equation y equals 2x minus 5

hram777 [196]

For x, it would be
y = 2x - 5
+5 +5

y + 5 = 2x
2 2 2

y/2 + 5/2 = x

6 0

3 years ago

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M=-3 , b= 9/2 Enter the equation of the line in slope-intercept form.

matrenka [14]

Y=mx+b, so your answer is y=-3x+9/2.

6 0

3 years ago

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Jada fills the bathtub before taking a bath and then allows the water to drain when she is done. The graph below models the numb

g100num [7]

The number of gallons of water in the bathtub is a function of time. Therefore, it is true.

<h3>How to illustrate the graph?</h3>

The graph shows a curve that lets you find the number of gallons of water given any value of t betweeh 0 and 30 plus.

Hence, the number of gallons of time indeed is a function of time, in the interval shown by the graph.

The answer is true, because each t value is paired with exactly one number of gallons".

Learn more about graph on:

brainly.com/question/19040584

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5 0

2 years ago

The ratio 30 in. To 9ft in simplest form

dangina [55]

Convert "inches" to "feet" here. 30 in 1 ft 30
--------- = --------- = --------- ft
1 12 in 12

Now find the ratio of (30 ft / 12) to 9 ft:

30 ft
------
12 30
==== = ----------- Reduce this fraction; one way would be to
9 ft 12(9) write 30/9 as 10/3:

30 10
------- = ------------ = 5/18 (answer)
12(9) 12(3)

8 0

4 years ago

Read 2 more answers