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2 years ago

Line k is parallel to y= -2x - 1 and passes through the point (4,3). What is the y intercept of line k?

Mathematics

1 answer:

Schach [20]2 years ago

4 0

Yk what all above you can’t go wrong with choosing all of the em tbh cuz u would get one of them righ

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Removing which point from the coordinate plane would make the graph a function of X?

lisabon 2012 [21]

You would need to remove (-2, 1)

8 0

3 years ago

help !!!!! urgent !!! the figure in the graph below will be rotated 180 degrees clockwise about the origin and then translated 9

Roman55 [17]

Answer:

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4 0

3 years ago

A baseball is hit and its height is given by h = 29.4t – 4. 9t^2, where h is the

ioda

Answer:

44.1m

Step-by-step explanation:

we are given a quadratic function which represents the height and time of a baseball

$\displaystyle h = 29.4t - 4.9 {t}^{2}$

we want to figure out maximum height of

the baseball

since the given function is a quadratic function so we have a parabola

which means figuring out the maximum height is the same thing as figuring out the maximum y coordinate (vertex)

to do so we can use some special formulas

recall that,

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

$\displaystyle H_{\text{max}}=f(t)$

notice that, our given function is not in standard form i.e

$\displaystyle f(x) = a {x}^{2} + bx + c$

let's make it so

$\displaystyle h = - 4.9 {t}^{2} + 29.4t$

therefore we got

our <em>a</em> is -4.9 and <em>b </em>is 29.4

so substitute:

$\displaystyle\rm t= \frac{ -( 29.4)}{ 2 \cdot - 4.9}$

remove parentheses and change its sign:

$\displaystyle\rm t= \frac{ -29.4}{ 2 \cdot - 4.9}$

simplify multiplication:

$\displaystyle\rm t= \frac{ -29.4}{ - 9.8}$

simplify division:

$\displaystyle \: t = 3$

so we have figured out the time when the baseball will reach the maximum height

now we have to figure out the height

to do so

substitute the got value of time to our given function

$\displaystyle H_{\text{max}}=29.4\cdot 3-4.9\cdot {3}^2$

simplify square:

$\displaystyle H_{\text{max}}=29.4\cdot 3-4.9\cdot 9$

simplify mutilation:

$\displaystyle H_{\text{max}}=88.2-44.1$

simplify substraction:

$\displaystyle H_{\text{max}}=44.1$

hence,

the maximum height of the baseball is 44.1 metres

4 0

3 years ago

Read 2 more answers

Is 7/20 and 0.07 equivalent numbers

IceJOKER [234]

$\frac{7}{20}=0.35 \\ 
 \\ \frac{7}{100}=0.07 \\ 
 \\ Solution: No \ they \ are \ not \ equivalent \ fractions \\$

7 0

3 years ago

Read 2 more answers

2x + 2 = -52 whats the value of x

Sloan [31]

You answer is -25 your welcome

6 0

3 years ago