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4 years ago

Can anyone one help me with this question

Mathematics

1 answer:

n200080 [17]4 years ago

5 0

<h2>Answer:</h2><h2>Option A is the answer </h2><h2>let a be no of adult and b be the no of children</h2><h2>total money made by park =$55157</h2><h2 /><h2>Given equation </h2><h2>$19 per adult =19a</h2><h2>$9.5 per children=9.5c</h2><h2>total people =3806</h2><h2>19a+9.5c=3806</h2><h2>a+c=55157</h2><h2 /><h2 /><h2>FOLLOW MEH✌✌✌✌✌✌</h2>

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Need help with math homework

Pavel [41]

Hello!

The answer for A is:

$X1=-1\\X2=5$

The answer for B is: The rocket will hit the lake surface in 5 seconds.

Defining the terms:

$a=-16\\b=64\\c=80\\$

So, replacing it in the quadratic equation (it's given to you in the exercise)\\

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

$x=\frac{-64+-\sqrt{64^{2}-4*-16*80 } }{2*-16}$

$x=\frac{-64+-\sqrt{64^{2}+5120} }{-32}=\frac{-64+-\sqrt{4096+5120} }{-32}\\x=\frac{-64+-\sqrt{9216} }{-32}=\frac{-64+-\ 96 }{-32}\\x=\frac{-64+-\ 96 }{-32}\\x1=\frac{-64+\ 96 }{-32}=\frac{32}{-32} =-1\\\\x1=\frac{-64-\ 96 }{-32}=\frac{-160}{-32} =5\\$

We are working with a quadratic equation, so we will have two possible results,

$X1=-1\\X2=5\\$

Now, we are asked to find the time, time can not be a negative value, we have to discard X1 (-1) since it's a negative value, knowing that, the rocket will hit the lake after 5 seconds.

Have a nice day!

5 0

4 years ago

3. Mrs Green bakes muffins.

Sphinxa [80]

Answer:

85%

Step-by-step explanation:

Monday:

200 x 0.70 = 140

200 - 140 = 60

Tuesday:

400 x ? = 60

400 x 0.85 = 340

400 - 340 = 60

8 0

4 years ago

Because of variability in the manufacturing process, the actual yielding point of a sample of mild steel subjected to increasing

Alex73 [517]

Answer:

modify tge production

Step-by-step explanation:

7 0

4 years ago

Find the equation of the parabola in the graph. The vertex is at (0,0) x^2=-8/3 y^2=-64 y^2 = -8/3x y^2= 8/3x

TiliK225 [7]

Y2 = (4,5) I HOLE IT HELPED YOU

6 0

3 years ago

An adult has a total of about 22.5 square feet (ft2) of skin. Use the fact that 1 m is approximately equal to 3.281 feet to conv

zheka24 [161]

Answer:

There are about 3.281 * 3.281 = 10.764 square feet in one square meter. Therefore, 22.5 square feet is 22.5 / 10.764 = 2.09 square meters.

3 0

4 years ago