please help with these questions (no links)

Answer:

i think its 1 and 2

Answer:

A. 9

B. 7

Step-by-step explanation:

a) The volume of the base of the crystal is 240 inches³

b) The space contained by the vase of the crystal is 24 inches³

A cuboid is defined as a three-dimensional shape, that has six rectangular faces, eight vertices and twelve edges

The volume of a cuboid is the product of its length , width and height

The volume of the cuboid is given by

Volume of Cuboid = Length x Width x Height

Given data ,

(a) Since the cross sections are always cuboids that are 5 inches wide by 4 inches long, the area of each cross section is 5 x 4 = 20 square inches. Since the vase has a height of 12 inches, the volume of the vase is equal to the product of the area of the base and the height, which is 20 x 12 = 240 cubic inches.

(b) If the crystal is half an inch thick on each of the sides and on the bottom, then the dimensions of each cross section are 5 inches by 4 inches by 1 inch (since each side of the crystal adds half an inch to the length and width of the rectangle). The volume of each cross section is therefore 5 x 4 x 1 = 20 cubic inches.

However, since the crystal takes up half an inch on each side, the actual space contained within the vase is reduced by 2 x (5 + 4 + 0.5 + 0.5) x 12 = 216 cubic inches (where 5 + 4 is the sum of the lengths and widths of the rectangle, and 0.5 + 0.5 is the thickness of the crystal on each side).

Hence , the approximate space contained within the vase is 240 - 216 = 24 cubic inches

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Answer:

im not sure but i need points

Step-by-step explanation:

Answer: 167.55 units cubed

Step-by-step explanation:

To find this, you must know the formula for a cone. The area is A=πr(r+h2+r2). We can get that the A=π4(4+102+(4)2). We got this from plugging in the numbers. The radius is equal to half the diameter, so the radius is 4. The answer is 167.55 units cubed.

Answer:

60°

Step-by-step explanation:

outside angle = two opposite inside angles

10x - 45°  = 4x + 3x

3x = 45°

x = 15°

m∠B = 4x

m∠B = 4(15°)

m∠B = 60°

Answer:

Option 3 satisfies the equation y = -2x + 1.

Step-by-step explanation:

7 = -2*-3 + 1 makes sense

-5 = -2*3 + 1 also makes sense

-9 = -2*-9 + 1 is correct

Have a nice day!

[tex]1.7x \times 2x - 4y \times 3x \\ 7x \times 3x - 4y \times 2y \\ 21x ^{2} - {8}y^{2} \\ 2.3x \times 2x - 4y \times 3y \\ 6x ^{2} - {12y}^{2} \\ 3.4x \times 5x - 5x \times 4x \\ {20x}^{2} - {20x }^{2} \\ 0 [/tex]

Answer:

The answer is B

Language has nothing to do with finding out who the spectators support. So it is b. This is because b does talk about asking the spectators who they support.

Answer:

B

Step-by-step explanation:

The languages of the spectators are not important referring to answer A. He just wants to know which team the most spectators support. So, B would be the best answer… personally.

Hope I helped!

Answer:

If you said its the height it would be 21

Step-by-step explanation:

The height is on the side

Answer:

-232

Step-by-step explanation:

Answer:

3. y=3x-4

4. -1/2x+6

Step-by-step explanation:

Answer:

Triangle C

Step-by-step explanation:

An acute angle is less than 90 degrees, Triangle C has angles measuring fifty degrees, sixty five degrees, and sixty five degrees. Those numbers are less than 90 degrees. So Triangle C is an acute angle.

Answer:

6 positive tiles

Step-by-step explanation:

There are 6 negative tiles so you would need 6 positive tiles to cancel out the 6 negative ones.

Simply put: -6 + 6 = 0

Hope that helped! Good luck! :)

Step-by-step explanation:

let number be x

5x = 12

12 - 4x = -36

Answer:

Hey , Listen we'll help you with whatever it is but please write the question in the comments, and I promise i'll edit my answer.

Answer:

1. A, B, D, E

2. B, D

3. B, C

Step-by-step explanation:

Antonio can score in his next game a score of 111 to reach his goal.

Arithmetic operations are the basic part of mathematics which combines the basic operations like addition, subtraction, multiplication and division.

Given that,

Antonio is in a bowling league. His goal is to score an average of at least 100 points per game.

Total number of games = 6

If each game score is at least 100, total number of scores must be at least 6 × 100 = 600

Scores got so far = 105 + 95 + 97 + 82 + 110

                             = 489

Score needed for the next game = 600 - 489 = 111

Hence the score needed in the next game is 111.

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Answer:

−0.78r − 5.67

Step-by-step explanation:

Answer:

it is the first one 1004.8 I know this is right

Step-by-step explanation:

v= pi radius times hight

Answer:

4/5

Step-by-step explanation:

Answer:

Hi, there your answer will be 4/5.

Hope this helps :)

Step-by-step explanation:

Answer:

khan videos

Step-by-step explanation:

hi, i recommend to look at khan academy's videos, they are free and you can learn a lot from it. good luck with your math!

Answer: x(x-4)+2(x-4)=0 The answer is

=4

= −2

Step-by-step explanation:

Distribute, Then Cobine the like terms, Then you get your solution

(i would go further into explanation but its kinda hard to explain)

Answer:

301 cm3

Step-by-step explanation:

Formula = V=πr2h

V = 3.14*4*2*12 = 301.44

Nearest whole number = 301 cm3

Answer:

B. 49

Step-by-step explanation:

For the rectangle:

10 • 4 = 40

For the triangle:

3 • 6 = 18

18/2 = 9

Add them together:

40 + 9 = 49

And there you have it!

Hope this helps, good luck :)

Answer:

Step-by-step explanation:

We need a picture for me I need a picture

Answer:y=-14 brainlyest plz

Step-by-step explanation:

Answer:

603.19

Step-by-step explanation:

can i have brainliest

Answer: 150.8

Step-by-step explanation: Explanation below.

Answer:

I think that the first one id D but many be if you get a better pic zi could help with the rest its a bit hard to count all the squares bc its a tadbit blury

Step-by-step explanation: