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Andrews [41]
1 year ago
12

100 POINTS PLEAS please help

Mathematics
2 answers:
mel-nik [20]1 year ago
7 0
  • (-2u³+5u-1)+(7u³-2u²+9)
  • -2u³+5u-1+7u³-2u²+9
  • 5u³-2u²+5u-1+9
  • 5u³-2u²+5u+8

Option A

Kamila [148]1 year ago
6 0

Answer:

\textsf{A)} \quad 5u^3-2u^2+5u+8

Step-by-step explanation:

Given expression:

(-2u^3+5u-1)+(7u^3-2u^2+9)

Remove parentheses:

\implies -2u^3+5u-1+7u^3-2u^2+9

Collect like terms:

\implies -2u^3+7u^3-2u^2+5u-1+9

Combine like terms:

\implies 5u^3-2u^2+5u+8

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Is 5.78778777 a rational or irrational number?..
kupik [55]

That number is the ratio of 578,778,777 to 100,000,000 , so it's rational.

Here's a surprising factoid:

ANY number that you can completely write down on paper with digits...
and a decimal point or a fraction bar if you need them ... is rational.

If you can write it down ... without saying "repeating" or using symbols ...
it's rational.


5 0
3 years ago
X 2 4 8 10 16<br> Y12 45<br> 09<br> Oy= 2 x<br> Oy=1 x<br> O y=x-1<br> Oy=x+2
MrRa [10]

Answer:

<em>y = x ÷ 2</em>

Step-by-step explanation:

We are given a table of values, which will be represented as ordered pairs (x,y) below:

(2,1) (4,2) (8,4) (10,5) (16,8)

We are required to select one of the functions that match the numeric relationship between x and y.

We could test them one by one, but at simple observation, we can note the values of y are half of the values of x:

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And so on. Thus the only function that divides the value of x by 2 to find the value of y is:

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6 0
2 years ago
Explain how 0 tens and 27 ones and 1 ten and 17 ones show the same answer and the answer is 27
Law Incorporation [45]
Because 0 + 27 is 27 and 10 + 17 is 27 as well 

4 0
2 years ago
35% of f is 14. What is f? Enter your answer as a numeric expression.​
Nata [24]

Answer:

40

Step-by-step explanation:

14/35 = f/100

35f = 14 x 100

f = 14 x 100 /35

f = 40

7 0
2 years ago
Read 2 more answers
Next, find the length of BC. Place point F at (4,4), and draw BF and FC. Find BF and FC using the coordinates of B, C, and F. Th
hammer [34]

9514 1404 393

Answer:

  BC = 5

Step-by-step explanation:

Of course, this geometry program can tell you the length of BC.

__

If you follow directions, you get a right triangle BCF that has leg lengths 3 and 4. The Pythagorean theorem then tells you the length of hypotenuse BC is ...

  BF = 4 -1 = 3

  FC = 4 -0 = 4

  BC² = BF² +FC²

  BC² = 3² +4² = 9 +16 = 25

  BC = √25

  BC = 5

7 0
2 years ago
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