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OverLord2011 [107]
2 years ago
14

Help me with this image

Mathematics
2 answers:
Pepsi [2]2 years ago
4 0
That is a lot but mathpapa.com/algebra-calculator.html has answers
topjm [15]2 years ago
3 0
Use photo math download it I’m the App Store have a great day
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I’m confused can ya help me
Harlamova29_29 [7]

Answer:

C & D

Step-by-step explanation:

x² + 3x - 3 = 0

a = co efficient of  x² = 1

b=  co efficient of x = 3

c = constant = -3

roots = (-b ± \sqrt{b-4ac})/2a

    = (-3±\sqrt{3^{2}-4*1*[-3]} )/2*1

    = (-3±\sqrt{9+12})/2

    = (-3±√21)/2

  x = \frac{-3+\sqrt{21}}{2}     ; x =\frac{-3-\sqrt{21}}{2}

7 0
3 years ago
Estimate the amount of the tip by rounding the bill to the nearest dollar before calculating.
telo118 [61]

Answer:

$16

Step-by-step explanation:

Round : $80.36 : $80

Equation : 20% of 80

Answer : $16

Sidenote: I hope this answers your questions!

6 0
2 years ago
Read 2 more answers
Math question<br>5x-5 (6*7x)=65
hammer [34]

5x-5(6\cdot7x)=65\\\\5x-5(42x)=65\\\\5x-210x=65\\\\-205x=65\qquad\text{divide both sides by (-205)}\\\\x=-\dfrac{65}{205}\\\\x=-\dfrac{65:5}{205:5}\\\\\boxed{x=-\dfrac{13}{41}}

4 0
3 years ago
A ball is thrown from an initial height of 3 feet with an initial upward velocity of 21 ft/s. The ball height h (in feet) after
Alexxx [7]

Answer:

Step-by-step explanation:

The position equation is given as

s(t)=-16t^2+21t+3 and we are looking for the times when the position of the ball is 9 feet. That means that we simply plug in a 9 for s(t) and factor to solve for t:

9=-16t^2+2t+3 and

0=-16t^2+21t-6 and this is what we factor to find t:

t = .42 sec and then again on its way back down at t = .89 sec

5 0
3 years ago
Ashley and Gabby bought lunch from the food trucks on Sugar Day. Ashley bought 3 tacos and a drink for $7. Gabby bought 2 drinks
kramer

Answer:

$1.5

Step-by-step explanation:

This would be solved using a simultaneous equation

let tacos = t

drink = d

3t + d = 7 -- eqn 1

2t + 2d = 8 -- eqn 2

Multiply equation 1 by 2 to derive equation 3

6t + 2d = 14 eqn 3

Substract equation 2 from equation 3

6t + 2d = 14 -- eqn 3

         -

2t + 2d = 8 -- eqn 2

= 4t = 6

solve for t

6/4 = 1.5

= $1.5

8 0
2 years ago
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