3 years ago

Can someone please help me with these with step by step explanation. I also added a hint thing

Mathematics

1 answer:

Darina [25.2K]3 years ago

5 0

Answer:

no i cant

Step-by-step explanation:

i just need points uwu

baka sussy

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If x = 4 and y = 3, then xy – 2x = A 4 B 6 C 19 D 40

Elden [556K]

Answer:

A) 4

Step-by-step explanation:

Plug in the value for x and y.

(4 x 3) - 2(4)

12 - 8 = 4

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3 years ago

Simplify. 1/3 (-512)

pychu [463]

Answer:

-170.6666667

Step-by-step explanation:

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3 years ago

an adult blue whale weighs 120 tons. a baby whale weighs 1/40 of the weight of the adult blue whale. how many pounds does the ba

sveticcg [70]

First of all, remember that one ton= 2000 pounds.

Since the adult whale weighs 120 tons, multiply this by 2000 to find the number of pounds. 120*2000=240,000 pounds.

A baby whale weighs 1/40 of the adult whale's weight. Multiply 1/40 times 240,000 to find the total weight in pounds of the baby whale. $\frac{240000}{1} * \frac{1}{40} = \frac{240000}{40} = 6000$

The baby whale weighs 6000 pounds.

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3 years ago

Find polynomial f(n) such that for all integers n is greater than or equal to 1 we have 3t( 1*2 + 2*3 +...+ n(n+1) ) = f(n). Wri

fomenos

$1\cdot2+2\cdot3+\cdots+(n-1)\cdot n+n\cdot(n+1)=\displaystyle\sum_{k=1}^nk(k+1)=\sum_{k=1}^n(k^2+k)$
$=\dfrac{n(n+1)(2n+1)}6+\dfrac{n(n+1)}2$
$=\dfrac{n(n+1)(2n+1)+3n(n+1)}6$
$=\dfrac{2n^3+6n^2+4n}6$
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4 years ago

A standard deck of cards has 52 cards in four suits: spades, hearts, diamonds, and clubs. Spades and clubs are black; hearts and

Olegator [25]

Answer:

231

Step-by-step explanation:

Let's compute the probability of this event and then multiply it by 100.

As each deck has 4 suits and each suit has 3 faces, there are 12 faces in a deck.

As a deck has 52 cards, the probability of drawing a face is

12/52 = 0.23076

This means that if you choose a card 1000 times from a deck of poker cards, you probably will select 231 times a face (rounding to the nearest integer).

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3 years ago