2 years ago

Please help asappppppp tysm <3

Mathematics

1 answer:

siniylev [52]2 years ago

3 0

Answer:

h= -144

Step-by-step explanation:

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At a local fair, a roller coaster takes 11.89 seconds to complete one ride. If eight people can ride at the same time, use estim

lina2011 [118]

Quantity of rides : 1 horu / 11.89 seconds = 3600 seconds / 11.89 seconds = approximately 302 rides

1 ride - 8 people |multiply 302

302 rides - 2416 people

2416 people can ride the roller coaster In one hour

4 0

3 years ago

PLEASE HELP! WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER

Naddik [55]

Answer:

180

Step-by-step explanation:

for 40 to be equal to 80 in percentages, the number has to be duplicated

3 0

3 years ago

Read 2 more answers

Hello, can someone help me with the working out to this problem

timama [110]

$\text{If}~ \alpha ~\text{and}~ \beta~ \text{are the roots,}\\ \\x^2 -(\alpha + \beta)x +\alpha\beta = 0\\\\\text{For}~ x^2+3x-2=0\\\\\alpha +\beta=-\dfrac ba=-3\\ \\\alpha \beta = \dfrac ca = -2\\\\$

$\text{So,~} \alpha^3+\beta^3 = (\alpha + \beta)(\alpha^2 + \beta^2 -\alpha \beta)\\ \\~~~~~~~~~~~~~~~~=(\alpha+\beta)\left[(\alpha +\beta)^2 -2\alpha \beta - \alpha \beta\right]\\\\~~~~~~~~~~~~~~~~=(\alpha+\beta)\left[(\alpha +\beta)^2 -3\alpha \beta \right]\\\\~~~~~~~~~~~~~~~~=-3\left[(-3)^2-3(-2)\right]\\\\~~~~~~~~~~~~~~~~=-3(15)\\\\~~~~~~~~~~~~~~~~=-45\\\\\text{And}~~~\alpha^3 \beta^3= (\alpha \beta )^3 = (-2)^3 = -8\\\\$

$\text{Hence the equation whose roots are}~ \alpha^3 ~\text{and}~ \beta^3~ \text{is:}\\ \\ x^2-(\alpha^3 + \beta^3)x +\alpha^3 \beta^3 =0\\\\\implies x^2 -(-45)x+(-8)=0\\\\\implies x^2 +45x -8=0$

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3 years ago

Help me please with this answer I'm stuck

nadezda [96]

Linear is the correct answer

7 0

3 years ago

Giải phương trình vi phân <br> xy^'-y(ylnx-1)=0<br> thỏa y(1)=1/2.

Mashcka [7]

Это ДУ Бернулли, все детали на фото.

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3 years ago