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3 years ago

Does the equation open up or down? Y = -3x2 +7x - 2

Mathematics

2 answers:

stealth61 [152]3 years ago

8 0

Answer:

down

Step-by-step explanation:

Since the coefficient of the x^2 term is negative, the parabola makes a frown and opens upside down

Helga [31]3 years ago

7 0

Answer:

Opens downward, like a frowning face

Step-by-step explanation:

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In the figure, AB is a diameter of circle P. What is the arc measure of AD in degrees?

fiasKO [112]

The arc measure of AD in degrees is 43 degrees.

Step-by-step explanation:

The angle measure of the straight line is 180°.
∠APD + ∠DPC + ∠CPB = 180°

⇒ (7x+1)° + 90° + (9x-7)° = 180°

⇒ 16x + 84° = 180°

⇒ 16x = 96°

⇒ x = 96/16

x = 6

Substitute x=6 for angle ∠APD = (7x+1)°

∠APD = 7(6)+1 = 43°

The arc measure of AD in degrees = 43 degrees.

8 0

3 years ago

PLEASE HEP ME QUICK!!!!: Tom travels between the two mile markers shown and then finds his average speed in miles per hour. Sele

slega [8]

Answer:

$speed=\frac{195\ miles}{3\ hours}$

$3\ hours=\frac{195\ miles}{speed}$

$3\ hours*(speed)=195\ miles$

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

Let

x -----> the distance in miles

y ----> the time in hours

$speed=\frac{x}{y}$

we have

The distance is equal to subtract 35 miles from 230 miles

$x=230-35=195\ miles$

The time is equal to subtract 1:30 pm from 4:30 pm

$y=4:30\ pm-1:30\ pm=3\ hours$

substitute in the formula of speed

$speed=\frac{195\ miles}{3\ hours}$

Isolate 3 hours

$3\ hours=\frac{195\ miles}{speed}$

Isolate 195 miles

$195\ miles=3\ hours*(speed)$

7 0

3 years ago

F(x)=-3x-4 what's the Inverness function ?

AnnZ [28]

First make x the subject:-

3x = F(x) + 4

x = (F(x) + 4) / 3

f(-1(x) = (x + 4) / 3 answer

3 0

2 years ago

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Which of the values for x and y make the equation 2x + 3y + 4 = 15 true?

hjlf

X=1, y=3 because 2x1 is 2 and 3x3 is 9, 2 plus 9 equals 11 and 11 plus 4 equals 15

5 0

3 years ago

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What number is 66% of 29.5

lana66690 [7]

19.47 is the answer. 29.5 * .66 or 66% is 19.47

3 0

3 years ago