A store has 11.2 kg of potatoes. Maria buys 572 g of potatoes from the store and Colin buys 1.42 kg of potatoes from the store.

Mathematics

1 answer:

Nady [450]3 years ago

6 0

Answer:

2.84

Step-by-step explanation:

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Henry buys

kati45 [8]

First we have to change rupees into paise .

[Rupees = 100paise]

Sandwiches = 1.85+1.85=370paise

Drinks = 72p+72p=144paise

Sweets = 105paise

Adding the total payment:-

370+144+105=619paise

619 paise means 6.19rupess

Hence 10-6.19=3.81rupess.

5 0

2 years ago

NASA launches a rocket at t=0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t)=−4.9t2+121t

Alenkasestr [34]

NASA launches a rocket at t = 0 seconds. Its height, in meters above sea-level, as a function of time is given by

$h(t)=-4.9t^2+121t+283$

The sea level is represented by h = 0, therefore, to find the corresponding time when h splashes into the ocean we have to solve for t the following equation:

$h(t)=0\implies-4.9t^2+121t+283=0$

Using the quadratic formula, the solution for our problem is

$\begin{gathered} t=\frac{-(121)\pm\sqrt{(121)^2-4(-4.9)(283)}}{2(-4.9)} \\ =\frac{121\pm142.083778...}{9.8} \\ =\frac{121+142.083778...}{9.8} \\ =26.8452834694... \end{gathered}$

The rocket splashes after 26.845 seconds.

The maximum of this function happens at the root of the derivative. Differentiating our function, we have