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Alla [95]
3 years ago
12

Claudio needs to simplify the expression below. 3.5x2+9(7.1+0.5)+4

Mathematics
2 answers:
Darya [45]3 years ago
4 0
Please use "^" to denote exponentiation.  "x2" doesn't cut it.

Simplify:   <span>3.5x^2+9(7.1+0.5)+4

We must carry out operations in a certain order.  Here, you must do any operations within parentheses first, followed by exponentiation, followed by mult. and div., followed by add. and subtr.

Thus, we get 3.5x^2 + 9(7.6) + 4

... which comes out to 3.5x^2 + 31.5 + 4

Cannot do anything further with 3.5x^2; all we can do is to add 31.5 and 4:

3.5x^2 + 35.5 (answer)</span>
Alexeev081 [22]3 years ago
3 0
It would be 79.4, if you follow complete it in the correct order. (mathematically)

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Please help me with this! If you’re smart you can solve it!
Dmitriy789 [7]

Let L, H, W be the length, height, and width.

Using the 3 clues they gave us, we have:

L x W = 12

L x H = 8

W x H = 6


Our goal is to figure out volume: L x W x H

One way of solving this is to just randomly plug in numbers which should be easy to do for this problem.

Another way is to use substitution.

From first equation: L = 12/W

Plug that into second equation:

12/W x H = 8,

H = (8/12)W = (2/3)W

Plug that into the third equation:

W x (2/3)W = 6,

W x W = 9

W must be equal to 3.

And since we know that L x H = 8

Then L x H x W = (8) x 3 = 24 cm^3

5 0
3 years ago
I need help pls on math
Rina8888 [55]

x^2-x-12=x^2+3x-4x-12=x(x+3)-4(x+3)=(x+3)(x-4)\\\\x^2-2x-8=x^2+2x-4x-8=x(x+2)-4(x+2)=(x+2)(x-4)\\\\4x^2=2x\cdot2x



\dfrac{x^2-x-12}{2x}:\dfrac{x^2-2x-8}{4x^2}=\dfrac{x^2-x-12}{2x}\cdot\dfrac{4x^2}{x^2-2x-8}\\\\=\dfrac{(x+3)(x-4)}{2x}\cdot\dfrac{2x\cdot2x}{(x+2)(x-4)}=\dfrac{(x+3)}{1}\cdot\dfrac{2x}{(x+2)}\\\\=\boxed{\dfrac{2x^2+6x}{x+2}}

4 0
3 years ago
21 = 4 + t <br>enter your answer <br>t =​
slamgirl [31]

Answer: t = 17

Step-by-step explanation:

Subtract 4 from each side.

t = 17

17 + 4 = 21

3 0
3 years ago
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1206.37 ROUNDED TO NEARST HUNDRETH
Andreyy89

Answer:

It is already rounded

Step-by-step explanation:

4 0
2 years ago
What is an important consideration when using pictographs to represent data
olchik [2.2K]

Answer:they are the same width, they are accurate, it related to the topic of the graph, and contains the same volume.

Step-by-step explanation:What is the most important consideration when using pictographs to represent data? (1 point) The bars on the pictograph are the same width. The proportions of the pictographs are accurate, The image in the pictograph is related to the topic of the graph. Each pictograph contains the same volume.

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2 years ago
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