All categories

4 years ago

GIVING 50 PTS!! I NEED HELP PLEASE!

Mathematics

1 answer:

Rasek [7]4 years ago

7 0

OK you have to find the volume of it. So you have to do multiple. Here want I got

You might be interested in

A third grade class has 16 girls and 15 boys a fourth grade class has 18 boys and 15 girls when picking for PE captains will mak

Mkey [24]

Answer:

$\dfrac{90}{341}$

Step-by-step explanation:

3rd grade:

Number of girls = 16

Number of boys = 15

Total number of students = 31

4th grade:

Number of girls = 15

Number of boys = 18

Total number of students = 33

Formula for probability of an event E can be observed as:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

Probability of picking a boy from 3rd grade, $P_{1} = \dfrac{15}{31} ..... (1)$

Probability of picking a boy from 4th grade, $P_{2} = \dfrac{18}{33} ..... (2)$

These are two independent events of picking a boy from 3rd grade and 4th grade.

So, probability the captain chooses 2 boys in the first pick can be found by multiplying (1) and (2) above.

$P = P_{1} \times P_{2}\\\Rightarrow \dfrac{15}{31} \times \dfrac{18}{33}\\\Rightarrow \dfrac{90}{341}$

3 0

3 years ago

Read 2 more answers

Insert parentheses to make each statement true.

oksano4ka [1.4K]

Answer:

a. (2+3)×4²+1=81

b. (2+3)×(4²+1)=85

c. 2+(3×4²)+1=51

d. 2+3×(4²+1)=53

Step-by-step explanation:

a. Parentheses about the 2 + 3 - then use PEMDAS to give 5 * 16.

b Inserting 2 parentheses makes it 5 * 17 = 85.

c.Inserting the parentheses simplifies it to 2 + 48 + 1 = 51.

d. Inserting the parentheses makes it 2 + 3*17 = 53

4 0

3 years ago

Please assist, thank you.

ale4655 [162]

Answer:

392 ft²

Step-by-step explanation:

Break this area into two parts, that is, into two trapezoids. The first trapezoid, on the left, has length 8 ft and average length (30 ft + 27 ft)/2, so its area is (8 ft)(28.5 ft) = 228 ft ².

The second trapezoid has width 8 ft and average length (19 + 22)/2 ft, or 8 ft by 20.5 ft). The area of this part is 164 ft².

Thus, the total area is 164 ft² + 228 ft², or 392 ft²

8 0

3 years ago

Mr. Ratchett, an elderly American, was found murdered in his train compartment on the Orient Express at 7 AM. When his body was

nasty-shy [4]

Answer: Mr. Ratchett died approximately at 2AM.

Step-by-step explanation: Newton's Law of Cooling shows the cooling rate between a body and the environment, by stating that the rate is proportional to the difference in temperatures between them.

Mathematically, it is represented as:

$\frac{dQ}{dt}=\alpha.A.(T_{s}-T)$