Q and A for the topic: General

Pedro bought 9 kg of sugar at the price of R$1.80 per kilogram, six packets of coffee at the price of R$3.90 per packet and 8 kg of rice at the price of R$2.70 per kilogram. Knowing that he paid for the purchases with a R$100.00 bill, how much change did he receive?

A circle with a 12-inch diameter is folded in half and then folded in half again. What is the area of the resulting shape?

I want to divide R$ 2200.00 between Antônio, Beto and Cássia, so that Beto receives half from Antônio and Cássia receives a third of Beto. Under these conditions, how much more will Beto receive than Cássia?

-442/c+5=26 what is c?

𝑦 = ( 𝑥2 − 3) (𝑥3 + 2 𝑥 + 1)

Let the vectors be u=(-1,0,2) , v=(0,2,-3) , w=(2,2,3) Calculate the following expressions a)<u,w> b) &lt;2u- 5v,3w&gt;

Find two natural numbers whose sum is 230 and their difference is 10. Set up the system and solve it.

reduction method 2x-y=13 x+y=-1

To calculate the probability that a player will receive the special card at least 2 times in 8 games, you can use the binomial distribution. The probability of receiving the special card in a single game is 1/4 (or 25%), and the probability of not receiving it is 3/4 (or 75%).

-x+3x-2,si x=3

Simplify the expression sin³(x)+cos³(x), using trigonometric functions

given cos26=k find cos13

2(2+2x)=12

find the value of the tangent if it is known that the cos@= 1 2 and the sine is negative. must perform procedures.

Solution to the equation y&#39;&#39; - y&#39; - 6y = 0

Solution of the equation y&#39;&#39; - y&#39; -6y = 0

Add. 7/w²+18w+81 + 1/w²-81

If we have the sequence: 3, 6, 12, 24 Please determine the 14th term.

Let 𝑢 = 𝑓(𝑥, 𝑦) = (𝑒^𝑥)𝑠𝑒𝑛(3𝑦). Check if 9((𝜕^2) u / 𝜕(𝑥^2)) +((𝜕^2) 𝑢 / 𝜕(𝑦^2)) = 0

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