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2 years ago

Please help me guys.......

Mathematics

2 answers:

sweet-ann [11.9K]2 years ago

8 0

Answer:

Step-by-step explanation:

9+9= 18

motikmotik2 years ago

8 0

Pretty sure its +9 cuz if you add 9 to all of the in put they come out as the out put

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What’s the slope (rate of change) for the red?

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3 years ago

A bakery sold some donuts before lunch.after lunch 18 more donuts were sold if 51 donuts were sold in all,how many donuts were s

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3 years ago

Which is one of the solutions to the equation 2x^2 - x - 4 = 0

Alex73 [517]

Answer:

$x_{1}=\frac{1+\sqrt{33} }{4}\\x_{2}=\frac{1-\sqrt{33} }{4}$

Step-by-step explanation:

Using quadratic formula

$x=\frac{-b+-\sqrt{b^{2}-4*a*c} }{2*a}$

we will have two solutions.

2x^2 - x - 4 = 0

So, a=2 b=-1 c=-4, we have:

$x_{1}=\frac{+1+\sqrt{-1^{2}-4*2*-4} }{2*2}\\\\x_{2}=\frac{+1-\sqrt{-1^{2}-4*2*-4} }{2*2}$

Finally, we have two solutions:

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5 0

4 years ago

Hi, I really need help with this ASAP!

Talja [164]

Answer:

google maybe

Step-by-step explanation:

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3 years ago

#1) A hot air balloon is at an altitude (height) of 113.2 meters. The balloon's altitude decreases by 10.8 meters every minute.

Minchanka [31]

Answer:

5min

Step-by-step explanation:

First form yourself an equation, 113.2-10.8x ≤70

Now begin to work it out

*113.2-10.8(1) ≤70 (instead of x, put a number, this will be how many minutes

1~ 102.4 is not less than or equal to 70, so we repeat this process

2~ 91.9

3~81.1

4~70.3 this is not the answer because even though its at 70 there is still a .3 so we keep going,

5~59.5

59.5 is ≤ 70, so the answer is 5 minutes

P.S. don't believe me? that's okay, use the formula, plug in five to see for yourself

i hope this helps ;)

3 0

3 years ago