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3 years ago

If you roll a number cube 54 times, about how many times do you expect to roll a number less than 5?

Mathematics

1 answer:

Studentka2010 [4]3 years ago

7 0

Answer:

18 times

Step-by-step explanation:

if you roll a number cube 54 times about how many times do you expect to roll a number less than 5? So you don't want a 5 or a 6. Then in your 54 tries, if the 5 or 6 can come up 18 times, what are you left with for the other possibility?

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Please help! 30 points!

Rashid [163]

Answer: $64.2^{\circ}$

Step-by-step explanation:

According to the cosine rule

$\cos C=\dfrac{a^2+b^2-c^2}{2ab}$

Here, $a=83, b=111, c=165,\ C=180^{\circ}-\theta$

Putting values

$\Rightarrow \cos (180^{\circ}-\theta)=\dfrac{83^2+111^2-165^2}{2\times 83\times 111}\\\\\Rightarrow \cos(180^{\circ}-\theta)=\dfrac{6889+12321-27225}{18426}\\\\\Rightarrow \cos(180^{\circ}-\theta)=\dfrac{-8015}{18426}=-0.4349\\\\\Rightarrow 180^{\circ}-\theta=\cos^{-1}(-0.4349)=115.77^{\circ}\\\Rightarrow \theta=64.23\approx 64.2^{\circ}$

So, the ship turns by $64.2^{\circ}$ north of west

8 0

3 years ago

Which choice shows the result of substituting 3x – 5 into the second equation for y?

ahrayia [7]

Answer: The answer is (B) 2x + 3(3x – 5) = 51 .

Step-by-step explanation: We are given three options and we are to select which choice shows the result of substituting 3x – 5 into the second equation for y.

So, y = 3x - 5.

Since the standard form of a linear equation i two variables is ax + by = c, so the second equation as given in the options must be of the form 2x + 3y = 51.

If we substitute y = 3x - 5, then this equation becomes

2x + 3(3x - 5) = 51.

Thus, (B) 2x + 3(3x – 5) = 51 is the correct option.

5 0

3 years ago

Read 2 more answers

You supervise the feeding of dogs at a kennel you use an average of 10 1/2 pounds of dog food each day.at the rate how many poun

liq [111]

Answer:

73.5 pounds of dog food in 7 days

Step-by-step explanation:

10 1/2 x 7

10x 7 =70

1/2 x 7 = 3.5

70 + 3.5 =73.5 pounds of dog food in 7 days

6 0

2 years ago

What is bigger 0.7liters or 500 millileters

Mkey [24]

Answer:

0.7 Ls

Step-by-step explanation:

A liter (L) and a milliliter (mL) are two units for measuring capacity in the metric system. The bottle pictured at the right holds 1 L of water. About twenty drops of water equals 1 mL. To convert liters to milliliters, To convert milliliters to liters, multiply by 1,000.

5 0

3 years ago

Read 2 more answers

I WILL GIVE YOU 5 STARS AND BRAINERLEST ANDCA LIKE IF U ANSWER THIS

ASHA 777 [7]

Answer: x=7

Step-by-step explanation:

3x=21

21 divided by 3 is 7

so x equals 7

5 0

3 years ago

Read 2 more answers