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3 years ago

A ball is thrown into the air with an upward

1 answer:

5 0

To find the 'maximum height' we will need to take the derivative of h(t) = –16t² + 32t + 6 then set it equal to zero, then solve for t. this t will be the time at which the ball reaches it's maximum height.

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How do you write "the difference between twenty and a number and four is six" as an algebraic expression?

kicyunya [14]

Using the variable x for the unknown number,

20 - (x + 4) = 6

is your answer!
Hope I helped :)

5 0

3 years ago

5x+5y=-30 find the x and y intercept

Masja [62]

<em>The x and y intercept of 5x + 5y = -30 are (-6, 0) and (0, -6) respectively.</em>

<h2 /><h2>Explanation:</h2>

The Standard Form of the equation of a line is given by:

$Ax+By=C \\ \\ A,B,C \ Real \ Constants \ and \ A>0$

So:

$5x+5y=-30$

is written in Standard Form. The x and y intercepts are:

$x-intercept: \ (x,0) \\ \\ y-intercept: \ (0,y)$

So:

FOR X-INTERCEPT:

$Let's \ set: \\ y=0 \\ \\ 5x+5(0)=-30 \\ \\ Isolating \ x: \\ \\ 5x=-30 \\ \\ x=-\frac{30}{5} \\ \\ \boxed{x=-6}$

FOR Y-INTERCEPT:

$Let's \ set: \\ x=0 \\ \\ 5(0)+5y=-30 \\ \\ Isolating \ x: \\ \\ 5y=-30 \\ \\ y=-\frac{30}{5} \\ \\ \boxed{y=-6}$

Finally,<em> the x and y intercept of 5x + 5y = -30 are (-6, 0) and (0, -6) respectively.</em>

<h2>Learn more:</h2>

Parallel lines: brainly.com/question/12169569

#LearnWithBrainly

6 0

3 years ago

If θ is a first-quadrant angle in standard position with P(u, v) = (3, 4), evaluate cos 2 θ . -7/25 -1/5 7/25

Grace [21]

Answer:

-7/25.

Step-by-step explanation:

From the given point P we see that the hypotenuse = √(3*2 + 4^2) = 5.

So cos θ = 3/5

cos 2 θ = 2 cos^2 θ - 1

= 2 * (3/5)^2 -1

= -7/25.

6 0

3 years ago

Please help me divide

Inessa [10]

Hope this work helps you

3 0

3 years ago

Read 2 more answers

Can u solve this questions.i don't know what to do.

PilotLPTM [1.2K]

Answer:

Step-by-step explanation:

average is calculated as

average = $\frac{sum}{count}$

$\frac{sum}{2}$ = 13 ( multiply both sides by 2 )

sum of 2 eldest = 26

Then for the 4 children

average = $\frac{26+2+4}{4}$ = $\frac{32}{4}$ = 8

5 0

3 years ago