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2 years ago

I need HALP PLEASE I MARK BRAINLIEST WHOEVER ANSWER

Mathematics

2 answers:

Tpy6a [65]2 years ago

6 0

Answer:

18ft

Step-by-step explanation:

If every cube is 1/4th foot in volume, then 4 cubes would be equivalent to 1ft. The box we need to measure is 4 cubes high, we can just count how many little cubes are on the top side and the amount of cubes would be at a 1 to 1 with how many square feet in volume the box is.

I'm not confident in this explanation but id be happy to answer questions in comments.

Hope i helped!

Law Incorporation [45]2 years ago

3 0

Answer:

Answer is D

Step-by-step explanation:

Length:

6 x $\frac{1}{4} = 1 \frac{1}{2}$

Width:

3 x $\frac{1}{4}$ = $\frac{3}{4}$

Height:

4 x $\frac{1}{4} = 1$

Now we multiply them all together! For the sake of keeping everything organized, everything will be the same (4ths)

$1\frac{2}{4}$ x $\frac{3}4}$ x $1$ = $1\frac{1}{8}$

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Answer:

x + 10 + 3x + 28 = 90

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Step-by-step explanation:

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2 years ago

What id the greatest common factor shared by 24 and 54

Marysya12 [62]

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2 years ago

6cos(20πt-π)+6√3cos(20πt-π\2)

juin [17]

Answer:

Answer is -6t

Step-by-step explanation:

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Note that π is 180°

5 0

2 years ago

On any given day, mail gets delivered by either Alice or Bob. If Alice delivers it, which happens with probability 1/4 , she doe

Troyanec [42]

Answer:

(a) The value of fₓ (9.5) is 0.125.

(b) The value of fₓ (10.5) is 0.50.

Step-by-step explanation:

Let X denote delivery time of the mail delivered by Alice and Y denote delivery time of the mail delivered by Bob.

It i provided that:

$X\sim U(9, 11)\\Y\sim U(10, 12)$

The probability that Alice delivers the mail is, p = 1/4.

The probability that Bob delivers the mail is, q = 3/4.

The probability density function of a Uniform distribution with parameters [a, b] is:

$f(x)=\left \{ {{\frac{1}{b-a};\ a, b>0} \atop {0;\ otherwise}} \right.$

The probability density function of the delivery time of Alice is:

$f(X_{A})=\left \{ {{\frac{1}{b-a}=\frac{1}{2};\ [a, b]=[9, 11]} \atop {0;\ otherwise}} \right.$

The probability density function of the delivery time of Bob is:

$f(X_{B})=\left \{ {{\frac{1}{b-a}=\frac{1}{2};\ [a, b]=[10, 12]} \atop {0;\ otherwise}} \right.$

(a)

Compute the value of fₓ (9.5) as follows:

For delivery time 9.5, only Alice can do the delivery because Bob delivers the mail in the time interval 10 to 12.

The value of fₓ (9.5) is:

$f_{X}(9.5)=p.f(X_{A})+q.f(X_B})\\=(\frac{1}{4}\times \frac{1}{2})+(\frac{3}{4}\times0)\\=\frac{1}{8}\\=0.125$

Thus, the value of fₓ (9.5) is 0.125.

(b)

Compute the value of fₓ (10.5) as follows:

For delivery time 10.5, both Alice and Bob can do the delivery because Alice's delivery time is in the interval 9 to 11 and that of Bob's is in the time interval 10 to 12.

The value of fₓ (10.5) is:

$f_{X}(10.5)=p.f(X_{A})+q.f(X_B})\\=(\frac{1}{4}\times \frac{1}{2})+(\frac{3}{4}\times\frac{1}{2})\\=\frac{1}{8}+\frac{3}{8}\\=0.50$

Thus, the value of fₓ (10.5) is 0.50.

5 0

3 years ago

Which expressions are equal to a(6−2a) ?Select each correct answer.

marysya [2.9K]

Answer: e. $6a-2a^{2}$

Step-by-step explanation:

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

$a(6-2a)$

2. To solve the exercise and find an equal expression, you must simplify that expression. Apply the Distributive property. Multiply the terms inside the parentheses by $a$ . Then, you obtain:

$a(6-2a)=(a)(6)-(a)(2a)=6a-2a^{2}$

8 0

3 years ago