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3 years ago

Can someone help me with these problems? The majority of them I have answers but I don't understand them. Thanks!

Mathematics

1 answer:

Nonamiya [84]3 years ago

8 0

Answer:

The corresponding answers to the questions are 9.625 cm² , 459, 304.5m², 1 : 3 , 3:4 , 10,000 pounds , 36 inches.

Step-by-step explanation:

Area of triangle = 0.5 x base length x height

Here base length = 5.5cm and height = 3.5cm

So area will be 0.5 x 5.5 x 3.5 cm² = 9.625 cm²

919/2 rounding off to nearest whole

We know that the value of 919/2 = 459.5 .

So the nearest whole number value to which it can be rounded off is 459.

We know that area of parallelogram is base length x height

Here, base length =14.5m and height = 21m

So area = 14.5 x 21 m² = 304.5m²

No. of grilled cheese sandwiches sold = 200

No. of tacos sold = 100

No. of grilled chicken salads sold = 150

Total lunches sold = 200 + 100 + 150 = 450

So, ratio of chicken salads to lunches sold is 150 : 450 = 1 : 3

Given number : 7,208,631

Odd digits here - 7,3,1 - 3 digits

Even digits here - 2,0,8,6 - 4 digits

So, ratio of odd digits to even digits is 3:4

One ton = 2000 pounds

So 5 tons = 5 x ( 1 ton) = 5 x 2000 pounds = 10,000 pounds

Table length = 3 feet

We know that 1 foot = 12 inches

So table length = 3 foot = 3 X 12 inches = 36 inches

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3 years ago

Does anyone know this, scammers keep answering it

Marta_Voda [28]

Answer:

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Step-by-step explanation:

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4 0

2 years ago

The yearly Penn rock-paper-scissors tournament has come down to the final series between Zach and Shaya. They play a best-of-thi

Zepler [3.9K]

Answer:

p=41.79%

Step-by-step explanation:

First let us remember the calculation of a probability:

$p=\frac{number of favorable outcomes}{total number of possible outcomes}$

In this case let's calculate the number of possibilities of winning the tournament when either one of them, Zach(Z) or Shaya(S), wins the first game (number of favorable outcomes). That is:

Given that Z or S won the first game, the player has another 6 possibilities of winning among 12 remaining games, which is a combination:

number of favorable outcomes = 12C6 = 924

Therefore, the winner of the first game has 924 opportunities of winning 6 other games among 12 games and be the tournament winner.

Now, we must find the number of total possible outcomes, which we may analize as it follows:

Assuming that the first winner Z or S loses the tournament we have several outcomes:

1. After winning the first game, the player doesn't win again, then we have 0 possbilities among 7 other games, this is because the next player would win the tournament winning 7 games in a row. We then have the combination 7C0.

2. The player wins just one more game, but doesn't win again. Now we have 1 possibility among 8 games, given that the other player would win the other 7 games. We then have the combination 8C1.

3. The player wins just two more games, but doesn't win again, now we have 2 possibilities among 9 games, given that the other player would win the other 7 games. We then have the combination 9C2.

And so on until we reach the outcome where the player wins 5 more games, but doesn't win again, then we have 5 possibilities among 12 games, given that the other player would win the other 7 games. We then have the combination 12C5.

Now, we must also consider all the outcomes where the first winner wins the tournament, that is the first combination we calculated: 12C6

Therefore we obtain the following:

total number of possible outcomes = 7C0+8C1+9C2+10C3+11C4+12C5+12C6

total number of possible outcomes = 2,211

We have now the elements to calculate the probability:

$p=\frac{924}{2,211}=0.4179$

Hence, the probability that the winner of the first game wins the tournament is 41.79%

7 0

3 years ago

Help please I need this ASAP

Flauer [41]

Answer:

Step-by-step explanation:

Brianna=x

Justin=x+10

Hannah=2(x+10)

x+x+10+2x+20=130

4x+30=130

4x=130-30

4x=100

x=25

Justin =x+10 = 25+10=35

8 0

3 years ago

PLEASE I NEED HELP!

Stels [109]

Answer: $\frac{2ae^{3}}{3bd}$

Step-by-step explanation:

1. You have the following expression given in the problem above:

$\frac{2ab^{-1}}{3e^{-3}d}$

2. Then, according to the Negative exponent rule, you have that:

$a^{-n}=\frac{1}{a^{n}}$

3. So, based on the rule shown above, the negative exponents indicates that $b$ must be in the denominator and $e^{3}$ must be in the numerator. Therefore, you obtain the following expression:

$\frac{2ae^{3}}{3bd}$

4 0

3 years ago