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3 years ago

Graph and tell me what letters they make:

Mathematics

1 answer:

Damm [24]3 years ago

7 0

Answer:

Step-by-step explanation:

make:

Graph: y = -3x – 4 , y = 3x – 4

Graph: x = -4 , y = 4 , y = 1 , y = -5

Graph: x = -5 , y = -x - 5 , y = (-2/5x) + 3 , y = (3/5x) + 3

Graph: y = (3/5x) + 4 , y = (1/4x) - 4 , y = (-2/5x) - 1

Graph: x = -5 , y = 4 , y= -4 , y = -1

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Help me Please!! Ive got a deadline!! Thanks! (:

saul85 [17]

The equation in standard form is 2x^2 + 7x - 15=0. Factoring it gives you (2x-3)(x+5)= 0. That's the first one. The second one requires you to now your formula for the axis of symmetry which is x = -b/2a with a and b coming from your quadratic. Your a is -1 and your b is -2, so your axis of symmetry is
x= -(-2)/2(-1) which is x = 2/-2 which is x = -1. That -1 is the x coordinate of the vertex. You could plug that back into the equation and solve it for y, which is the easier way, or you could complete the square on the quadratic...let's plug in x to find y. -(-1)^2 - 2(-1)-1 = 0. So the vertex is (-1, 0). That's the first choice given. For the last one, since it is a negative quadratic it will be a mountain instead of a cup, meaning it doesn't open upwards, it opens downwards. Those quadratics will ALWAYS have a max value as opposed to a min value which occurs with an upwards opening parabola. This one is also the first choice because of the way the equation is written. There is no side to side movement (the lack of parenthesis tells us that) so the x coordinate for the vertex is 0. The -1 tells us that it has moved down from the origin 1 unit; hence the y coordinate is -1. The vertex is a max at (0, -1)

3 0

3 years ago

Create an equivalent ratio to 10:16 by dividing both sides by 2. What is the equivalent ratio?

Darya [45]

10 / 2 = 5

16 / 2 = 8

The equivalent ratio is 5:8

5 0

2 years ago

For the monthly rainfall data set of 7 cm, 3 cm, 10 cm, 7 cm, 12 cm, 10 cm, 8 cm, and 7 cm calculate the mean. * what is the mea

timama [110]

The mean would be 8 since you would have to add all of them up which would give you 64 and then divide by the amount of numbers their are which is 8 so 64/8 = 8

5 0

3 years ago

Which equation shows y=−12x+4 in standard form?

Tema [17]

The answer is the first option

6 0

3 years ago

If 1 ft = 1.894 x 10 -4miles, convert 20.0 inches to miles

Yakvenalex [24]

Answer:

3.1567 * 10^-4 miles

Step-by-step explanation:

1 ft = 1.894 * 10^-4 miles , so

1 inch = 1.894 * 10^-4 / 12 miles

= 0.15783 * 10^-4

= 1.5783* 10^-5 miles ( in scientific form).

Multiplying this by 20 we get

31.567 * 10^-5

= 3.1567 * 10^-4 miles.

3 0

2 years ago