3 years ago

Write a real world situation for 15x-20<130 (greater than or equal to is the symbol)

Mathematics

1 answer:

sammy [17]3 years ago

6 0

15x<130+20, 15x<150 divided both sides by 15 ,the answer is 10

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At the circus, a clown is shot from a cannon. This situation can be modeled by the function: h = – 16t2 + 45t + 15, where 'h' is

weeeeeb [17]

Answer:

The maximum height is 46.64 feet.

Step-by-step explanation:

If we take the derivative of h whit respect to t and equal this to zero we would find the value of t which corresponds to the maximum h.

So, we have the function h(t):

$h(t)=-16t^{2} + 45t + 15$

Taking the derivative, we have:

$\frac{dh(t)}{dt}=-32t + 45=0$

Now, we solve it for t:

$t=\frac{45}{32}=1.4\: s$

Finally, we put this value of t into the original equation.

$h(t)=-16(1.4)^{2} + 45(1.4) + 15$

$h_{max}=46.64\: ft$

Therefore, the maximum height is 46.64 feet. All the given options are wrong, the one that comes closest is option A.

I hope it helps you!

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3 years ago

Mike's grandmother opened a savings account in Mike's name and deposited some money into the account. The account pays an annual

Snowcat [4.5K]

SI = prt/100
1440 = (p*9*8)/100
⇒p=2000

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3 years ago

A rectangle has is 70 cm long and w cm wide. The perimeter of the rectangle is 182 cm. What is the width, w?

joja [24]

Answer:

w = 21

Step-by-step explanation:

i've done this kind of thing before a million times

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2 years ago

Author answered 85 out of 95 questions correctly on his math exam.Miguel answered 64 out of 76 questions correctly on his histor

photoshop1234 [79]

In this case, you need to find the percentage each student got, then find who received a higher score.

First Step: $\frac{85}{95}$ (and) $\frac{64}{76}$
Second step: Divide each fraction → ≈ 0.8947 (and) ≈ 0.8421
Third Step: Multiply each decimal by 100. → 89.47% (and) 84.21%

Fourth Step: As 89.47% is greater, Author got an higher score.

BRAINLIEST PLS!!!

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3 years ago

Whats the surface area of a cylinder with height of 12in.and the radius is 4in

emmainna [20.7K]

Answer:

401.92 in²

Step-by-step explanation:

S.A. = 2πr²+2πrh

S.A. = 2π4²+2π4·12

S.A. = 100.48 + 301.44

S.A. = 401.92 in²

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3 years ago