3 years ago

Please help I need to get this done will brainlist

Mathematics

1 answer:

Advocard [28]3 years ago

8 0

Which problem of the 4?

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Write an equation of the line that passes through the given point, (1, 2).

Fiesta28 [93]

Answer:

Step-by-step explanation:

eq. of any line through (1,2) with slope m is

y-2=m(x-1)

if the line is parallel to x-axis then y=2

if the line is parallel to y-axis then x=1

7 0

3 years ago

If sine of x equals 1 over 2, what is cos(x) and tan(x)?

emmasim [6.3K]

Cosx=sqrt3/2 and tanx=sqrt3/3

5 0

3 years ago

Which systems of equations have infinite solutions

Zolol [24]

N3Y+7 can have infinate solutions

4 0

3 years ago

Martin throws a ball straight up in the air. the equation h(t) = -16t^2 + 40t + 5 gives the height of the ball, in feet, t secon

Lisa [10]

Answer:

2.62 seconds

Step-by-step explanation:

Let

t ----> the time in seconds

h(t) ----> he height of the ball, in feet

we have

$h(t)=-16t^2+40t+5$

we know that

When the ball hits the ground, the height is equal to zero

$-16t^2+40t+5=0$

The formula to solve a quadratic equation of the form

$at^{2} +bt+c=0$

is equal to

$t=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16t^2+40t+5=0$

$a=-16\\b=40\\c=5$

substitute in the formula

$t=\frac{-40\pm\sqrt{40^{2}-4(-16)(5)}} {2(-16)}$

$t=\frac{-40\pm\sqrt{1,920}} {-32}$

$t=\frac{-40+\sqrt{1,920}} {-32}=-0.12\ sec$

$t=\frac{-40-\sqrt{1,920}} {-32}=2.62\ sec$

therefore

The solution is t=2.62 seconds

4 0

3 years ago

Please answer this 2 multiple choice questions correctly I needed today please show work

vredina [299]

Answer:

21) 12x + 11

hoped that worked

8 0

3 years ago