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2 years ago

What are all the expressions that equivalent to 2(15 - 20d + 5c)

Mathematics

2 answers:

ruslelena [56]2 years ago

7 0

Answer:

-6 + 8d - 2c

-2c +8d -6

-2 (3 - 4d + c)

Step-by-step explanation:

hope this helps

ollegr [7]2 years ago

7 0

Hope this helps you

Answer:

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A gym is considering changing its operating hours at multiple locations in a city. The gym management wants to know what percent

Marrrta [24]

You don't need the names since there is 4367, and that would only be about 1/9th of the whole amount of members, so b is out of the question. you need average people to make it, so d is out of the question, and picking a random letter out of the alphabet is as arbitrary as a, but you are adding the effect of Inconsistency so I would say Let the gym management decide which members should be surveyed is the right answer

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2 years ago

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A solid cylindrical metal is melted and recast into cubes of metal of sides 3cm . The base radius of the initial cylindrical met

belka [17]

Answer:

808

Step-by-step explanation:

The volume of the initial cylindrical metal must be equal to the total volume of the cubes.

Let the number of cubes made be x. Therefore:

$V_C = V_c * x$

where $V_C =$ volume of the cylinder

$V_c =$ volume of each cube

Each of the cubes have sides of length 3 cm.

The volume of a cube is given as:

$V_c = L^3$

where L = length of side of cube

Therefore, the volume of each cube is:

$V_c = 3^3 = 27 cm^3$

The volume of a cylinder is given as:

$V_C = \pi r^2h$

where r = radius

h = height of the cylinder

The volume of the cylinder is:

$V_C = \pi * 10.5^2 * 63 = 21823.55 cm^3$

Therefore:

21823.55 = 27 * x

=> x = 21823.55 / 27

x = 808.27

Since the number of cubes can only be a whole number, the number of cubes that will be made is 808.

8 0

2 years ago

A community hall is in the shape of a cuboid the hall is 40m long 15m high and 3m wide. 10 litre paint covers 25m squared costs

krek1111 [17]

Answer:

Total cost for tiles and paints is $924.

Step-by-step explanation:

We have been given that a community hall is in the shape of a cuboid. The hall is 40m long 15m high and 3m wide.

The paint will be required for 4 walls and ceiling.

Let us find area of walls and ceiling.

$\text{Area of walls and ceiling}=(2*40*15)+(2*3*15)+(40*3)$

$\text{Area of walls and ceiling}=1200+90+120$

$\text{Area of walls and ceiling}=1410$

Therefore, the area of walls and ceiling is 1410 square meters.

Given: Cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. Therefore,

$\text{ The total painting cost}=10*(\frac{1410}{25})$

$\text{ The total painting cost}=10*56.4=564$

Therefore, the total painting cost is $564.

Tiles will be required for floor. Let us find the area of floor.

$\text{Area of floor} = 40*3\text{ square meters}$

$\text{Area of floor} =120\text{ square meters}$

Given: 1m squared floor tiles costs $3. So,

$\text{Total cost for tiles} = 3*120 = 360$

Therefore, the total cost for tiles is $360.

Now let us find combined total cost of tiles and paint.

$\text{Combined total cost}= 564+360 = 924$

Therefore, the combined total cost of tiles and paint is $924.

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2 years ago

Lola rode her bike for 7/10 of an hour on saturday and 3an hour on sunday.how much longer did she ride her bike on saturday than

Artyom0805 [142]

She rode 2 and 3/10 more hours

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2 years ago

Tickets to a basketball game can be ordered online for a set price per ticket plus a $5.50 service fee. The total cost in dollar

erica [24]

Let

c--------> the total cost

x------> the number of tickets

z------> the cost of one ticket without service fee

we know that

$108=5.50+5z$

solve for z

combine like terms

$5z=108-5.50$

$5z=102.50$

$z=\$20.50$

The linear function is equal to

$c=5.50+20.50x$

therefore

<u>the answer is</u>

$c=5.50+20.50x$

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2 years ago

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