Please help me asap!!!!!!!!!!!- thx<333

Can someone please help me with these questions?

nikitadnepr [17]

QUESTION 1

The given function is

$y = - 6x - 13$

The domain of this function refers to all values of x for which y is defined.

The given function is defined for all real values of x.

The domain is all real numbers.

The correct answer is A

QUESTION 2

The equation in column 1 is

$y = - 2 {x}^{2} - 4x + 12$

We obtain the vertex form as follows;

$y = - 2( {x}^{2} + 2x) + 12$

$y = - 2( {x}^{2} + 2x + {1}^{2}) - - 2 {(1)}^{2} + 12$

$y = - 2({(x + 1)}^{2}) + 2 + 12$

$y = - 2({x + 1)}^{2} + 14$

The x-value of the vertex is -1.

The equation in column 2 is

$y = {x}^{2} - 4x + 3$

We can also find the x-value of the vertex using the formula,

$x = - \frac{b}{2a}$

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

$x = 2$
The correct answer is

B) The value found in column #1 is less than the value found in column #2

QUESTION 3

The height of the ball is modeled by

$h(t) = - 16 {t}^{2} + 64t$
where t equals the time in seconds and h(t) represents the height of the ball at time t seconds.

The axis of symmetry can be found using the formula,

$t = - \frac{b}{2a}$

$t = - \frac{ 64}{2( - 16)}$

$t = 2$

The correct answer is

A) t=2; it takes 2 seconds to reach maximum height and 2 seconds to fall back to the ground

QUESTION 4

The equation of axis of symmetry is given by the formula,

$x = - \frac{b}{2a}$

For the axis of symmetry of a given quadratic function to be zero, then the b-value of quadratic function should be zero.

The only equation from the given options whose b-value is zero is

$y = {x}^{2} + 2$

The axis of symmetry is

$x = - \frac{0}{2(1)}$

$x = 0$

The correct answer is C

3 0

3 years ago

Box A contains one 100 g block, one 20 g block and three 5 g blocks. Box B contains one 50 g block and three 10 g blocks. Jasmin

never [62]

Answer: 2 boxes

Step-by-step explanation:

A=Box A. a=A-65. B=Box B. b=B+65

A=100+20+5

A=125

A-65=125-65

a=60

B=50+10+10+10

B=80

B+65=80+65

b=145

b=A+20

a=B-20

b=100+20+5+10+10 ==> Change in +2 boxes

a=50+10 ==> Change in -2 boxes

3 0

2 years ago

The distance above sea level after increasing 24 meters from a depth of 24 meters below sea level

vazorg [7]

Answer:

you would be at sea level

Step-by-step explanation:

-24 is where you were than you went up 24

6 0

3 years ago

Read 2 more answers

Wastewater is filling barrels at the rate of 11 quarts per hour. The recycling facility picks up 120 full barrels on each trip,

givi [52]

120 barrels x 12 quarts per barrel = 1440 total quarts

1440 quarts / 11 quarts per hour = 130.91 hours to fill all the barrels

1 day = 24 hours

130.91 hours / 24 hours = 5.45 days = 5.5 days

5 0

3 years ago

calvin is reading a play script. he notices part of the play where the main character speaks at length to characters who remain

jonny [76]

I think it's a.monologue

3 0

3 years ago

Read 2 more answers