Please make sure you answer with all the steps

Thanks you so much :)

Answers

Answer 1

Answer: the discriminant tells how many solutions and what type
b^2-4ac is that disccriminant
where you have ax^2+bx+c=0
a=3
b=-5
c=4
discriminant=(-5)^2-4(3)(4)=25-somethingbiggerthan25=negative
since it is negative, you will have 0 real solutions and 2 complex solutions (if you remember quadratic formula, the discriminat is under sqrt sign so if it is negative you get complex roots)

18. 0 real roots

19. hit the ground means height=0
set to zero and solve
0=-16t^2+25t+3
use quadratic fomrula
for equaiton ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^(2)-4ac} }{2a}$

a=-16
b=25
c=3
x= $\frac{-25+/- \sqrt{25^(2)-4(-16)(3)} }{2(1)}$
x= $(-25+/- √(625+192) )/(2)$
x= $(-25+/- √(817) )/(2)$
apxos
x=1.79161 or -26.7916
since x=time, we can't have negative time so
it take 1.79161 seconds

20.
t=1
sub1 for every t
h(1)=-16(1)^2+25(1)+3
h(1)=-16+25+3
h(1)=12

12 feet

18. zero real roots
19. t=1.79161 seconds
20. 12 feet

Answer 2

Answer: 18. (i dont know this one but I know rest )Solve 3x^2-5x+4=0 by using quarartic equation ((-bV(b^2-4ac))/2a) If you put in values for a=3 b=-5 and c=4. You get no answer

19. Solve the quaratic equation for a=-16 b=25 c=3 to get about 1.67447537 seconds for one solution. the other is in -, so that one isn't the answer.

20. when the time is 1, then you can insert the into h(t) by doing h(1)=-16*1^2 +25*1^2 +3 to get 12. that means that the balloon is at 12 feet at one second.

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How do you solve 5[2p−4(p+5)]=25 properly?

Answers

Answer:

Step-by-step explanation:

5[2p-4(p+5)]=25

or, 2p-4(p+5)=5

or, 2p-4p-20=5

or, -2p=5+20

or, -2p=25

or, 2p=-25

or, p=25/2

so, p=12.5

W={z|z is an integer and -3(less than or equal to) z<1} Rewrite W by listing its elements. Make sure to use the appropriate set notation.

Answers

$W=\{z|z\in\mathbb{Z} \wedge -3\leq z\ \textless \ 1\}\n\boxed{z\in\{-3,-2,-1,0\}}$

How many ways can the letters of the word ORGANISM be arranged so the third letter is G?

Answers

$7!=5040$
..........

Lm (51 + m) + 21² (m - 3) + 6L (m² +L)

Answers

Answer:

Step-by-step explanation:

Given :

l + m + n = 9

l²+ m² + n²= 31

l + m + n = 9

On squaring both sides

(l + m + n)²= 9²

(l²+m²+n²+2(lm+mn+nl) = 81

31 +2(lm+mn+nl) = 81

2(lm+mn+nl) = 81 - 31

2(lm+mn+nl) = 50

(lm+mn+nl) = 50/2

(lm+mn+nl) = 25

Hence, the value of (lm+mn+nl) = 25

Answer:

YOU GOT GOOGLE

Step-by-step explanation:

GOOGLE!!

The surface area of a cone is given by the formula S = πl + πr2. Solve the formula for l.

Answers

Hello,

S-πr²=πl

l=(S-πr²)/π

Answer: l = s/n – r2

Step-by-step explanation:

A quadratic equation is shown below:x2 − 8x + 13 = 0

Which of the following is the first correct step to write the above equation in the form (x − p)2 = q, where p and q are integers?
Subtract 5 from both sides of the equation

Add 3 to both sides of the equation

Add 5 to both sides of the equation

Subtract 3 from both sides of the equation