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3 years ago

9

using the formula v=l×w×h , find the volume of a right rectangular prism when the length of the prism is 45cm , the width is 12c

m, and the height is 10cm.

2 answers:

DedPeter [7]3 years ago

5 0

45x12x10

5400 should be the answer

Natali [406]3 years ago

3 0

The volume of the rectangular of prism is 5400

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Question 8 simplify 4a 2 - 3a - 4 1. 7a - 7 2. a - 2 3. a 6 4. 6a - 2

Viktor [21]

Not Specific Enough:
is it 4a(2-3a)-41(7a-72)-23a(64)6a-2?

8 0

3 years ago

three families are traveling the same route across country. the first family stops every 240 kilometers. the second family stops

kogti [31]

Answer:

<u>The three families will stop at the same place at 1,200 kilometers.</u>

Step-by-step explanation:

1. Let's check all the information given to answer the question:

Family A or 1 stops every 240 kilometers

Family B or 2 stops every 200 kilometers

Family C or 3 stops every 300 kilometers

2. After how many kilometers will they stop at the same place?

Family A or 1 will stop at 240, 480, 720, 960 and 1,200 kilometers.

Family B or 2 will stop at 200, 400, 600, 800. 1,000 and 1,200 kilometers.

Family C or 3 will stop at 300, 600, 900. and 1,200 kilometers.

<u>As we can check the first common stop will be at 1,200 kilometers.</u>

7 0

2 years ago

Blain is two years older than three times Jillians age. Jillian is also 16 years younger than Blain. How old is Blain?

Ipatiy [6.2K]

The age of Blain is 23 years old

<h3><u>Solution:</u></h3>

Let the age of Blain be "a" and age of Jillian be "b"

Given that Blain is two years older than three times Jillians age

So we can frame a equation as:

age of blain = 2 + 3(age of Jillian)

a = 2 + 3b ----- eqn 1

Also given that Jillian is also 16 years younger than Blain

Age of Jillain = Age of Blain - 16

b = a - 16 ---- eqn 2

Substitute eqn 2 in eqn 1

a = 2 + 3(a - 16)

a = 2 + 3a - 48

a - 3a = -46

-2a = -46

a = 23

Thus the age of Blain is 23 years old

4 0

3 years ago

If sin42 degrees = 2/3 then cos48 degrees = what? <br> If tan20.5= 3/8, the tan69.5= what?

Anna11 [10]

Big ifs, question writers. These are of course approximations.

The "co" in cosine comes from complementary angles. It means since

$42^\circ + 48 ^\circ = 90^\circ$

$\sin 42^\circ = \cos 48^\circ$

Answer: cos 48° = 2/3

Similarly,

$20.5^\circ +69.5^\circ = 90^\circ$

$\tan 69.5^\circ = \cot 20.5^\circ = \dfrac{1}{\tan 20.5^\circ} = \dfrac 8 3$

Answer: tan 69.5° = 8/3

5 0

3 years ago

Sally works 40 hours a week and makes $20 an hour, but her kids are in child care each day and the day care center charges her $

Maslowich

Answer:

$11.25

Step-by-step explanation:

Multiply the number of hours she works by how much she gets paid per hour.

800

Multiply 50 times 7 (50 being the amount charged for her kid and 7 being the days of the week)

350

Subtract the 350 from the 800

450

Divide the 450 by the number of hours worked per week

450/40

Answer: 11.25

So Sally actually makes 11.25 per hour.

5 0

3 years ago