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3 years ago

What is the simplified form of the expression?

Mathematics

2 answers:

ladessa [460]3 years ago

7 0

Answer:

7c²d-7c+4d-10, you first do 5c²d+2c²d, then you do -4c-3c, after that you do +3d + d and finally you do -3-7.

I hope I helped you

satela [25.4K]3 years ago

5 0

7c ^2 d-7c+4d-10

hope this helps

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An equation is shown 5 x + 3x equals 5x + 15 / 2 what value of 3 x makes this equation true

Ipatiy [6.2K]

3x would have to be 15/2.

Since we have that 5x+3x=5x+15/2, the only pieces that are different are the 3x and the 15/2. This gives us the equation

3x=15/2

If we were to go on and solve this equation, we would multiply by 2, giving us
6x=15

Then we would divide by 6:
6x/6=15/6
and x=2.5.

3 0

4 years ago

Marcus wants to decorate his box that is i the shape of a cube with a color. he decides to cover the entire box with red color p

olga2289 [7]

*see attached picture for the diagram of the box

Answer:

130cm²

Step-by-step explanation

The amount of red appear needed by Marcus to cover his box = Surface Area of the cube - Area of the circle.

Surface area of cube = 6s² (where s is the side length of the cube. s² therefore is S.A of 1 face of the cube)

Given that s = 5cm,

S.A of cube = 6s² = 6*5² = 150cm²

Area of circle = πr²;

Given that π = 3.14, and r = ½ of diameter of circle (i.e. ½ of side length of cube)

Area of circle = 3.14*(½*5)² = 3.14*(2.5)² = 3.14*6.25 =19.625

Amount of red paper needed = S.A of the cube - Area of the circle = 150cm² - 19.625cm² = 130.375cm² = 130cm²

3 0

3 years ago

Help please I have a few minsssssss!!

Savatey [412]

Answer:

Step-by-step explanation:

8 0

4 years ago

A set of silverware contains 30 pieces. The set contains only spoons, forks, and knives. It contains the same number of spoons a

Tema [17]

Let the number of knife be x.
Knife = x
Spoon = 2x
forks = 2x

Total = 30
x + 2x + 2x = 30
5x = 30
x = 6

Knife = x = 6
forks = 2x = 12
Spoon = 2x = 12

Answer: There are 12 forks.

5 0

3 years ago

Read 2 more answers

30+ Point for AND BRAINLIEST FOR FASTEST!!!!!!

Serga [27]

1) If a die is rolled once, determine the probability of rolling a 4: Rolling a 4 is an event with 1 favorable outcome (a roll of 4) and the total number of possible outcomes is 6 (a roll of 1, 2, 3, 4, 5, or 6). Thus, the probability of rolling a 4 is ¹/₆.

If a die is rolled once, determine the probability of rolling at least a 4: Rolling at least 4 is an event with 3 favorable outcomes (a roll of 4, 5, or 6) and the total number of possible outcomes is again 6. Thus, the probability of rolling at least a 4 is ³/₆ = ¹/₂.

Here are two more examples:

If a coin is flipped twice, determine the probability that it will land heads both times:

Favorable outcomes: 1 -- HH
Possible outcomes: 4 -- HH, HT, TH, TT

Thus, the probability that the coin will land heads both times is ¹/₄.

If Dan grabs one sock from a drawer containing 3 white socks, 4 blue socks, and 5 yellow socks, what is the probability that he will grab a white sock?

Favorable outcomes: 3 (3 white socks)
Possible outcomes: 12 (3 white socks + 4 blue socks + 5 yellow socks)

Thus, the probability that Dan will grab a white sock is ³/₁₂ = ¹/₄.

8 0

2 years ago