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3 years ago

ALGEBRA 1

Mathematics

1 answer:

Gekata [30.6K]3 years ago

7 0

The answer is B. 8x+6. You multiple 3 and x+4 then combine like terms

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The Vertical position y (in feet) of a rock T seconds after it was dropped from a Cliff is given by the formula y= -60tsquared +

Nuetrik [128]

Answer:

2.48 seconds

Step-by-step explanation:

The given function is

$y=-60t^2+4t+380$

When $y=0$ the ball will be at the ground

$0=-60t^2+4t+380$

$\Rightarrow t=\dfrac{-4\pm \sqrt{4^2-4\left(-60\right)\times 380}}{2\left(-60\right)}$

$\Rightarrow t=-2.48,2.55$

So, the time taken by the rock to hit the ground is $2.48\ \text{seconds}$ .

8 0

3 years ago

Which fraction is closer to 1/2 than 0 or 1?

alexandr1967 [171]

Answer:

8/12

hope this helps

have a good day :)

Step-by-step explanation:

7 0

3 years ago

Find the vector reciprocal to set. a= i+2j+2k, b= 2i+3j+k, c= i-j-2k

inn [45]

Answer:

I just do a' as a sample. You calculate b' and c'

Step-by-step explanation:

$a'=\frac{b\times c}{a\bullet (b\times c)}, b' = \frac{c\times a}{a\bullet (b\times c)}, c' = \frac{a\times b}{a\bullet (b\times c)}$

Now, calculate b x c

$\left[\begin{array}{ccc}i&j&k\\2&3&1\\1&-1&-2\end{array}\right] =$

$a'=\frac{}{\bullet }=\frac{}{-5} =$

7 0

3 years ago

Easy points rn, wats 1+1 wrongs answers only

riadik2000 [5.3K]

Answer:

1+1= 11

Step-by-step explanation:

.....................

8 0

3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%20-%207%20%2B%20%20%5Cfrac%7Bf%7D%7B2%7D%20%3D%20%20-%201" id="TexFormula1" title=" - 7 + \f

vovikov84 [41]

First you had to add by seven from both sides of equation form.

$-7+\frac{f}{2}+7=-1+7$

Then simplify by equation.

$\frac{f}{2}=6$

Next, you multiply by two from both sides of equation form.

$\frac{2f}{2}=6*2$

And finally, simplify by equation.

$6*2=12$

$2*6=12$

$12/6=2$

$12/2=6$

$f=12$

Final answer: $\boxed{f=12}$

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

3 0

3 years ago