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Sloan [31]
2 years ago
7

4. Solve for the value of n. 0.72 = 0.4(n + 1.4) Draw or add images here

Mathematics
1 answer:
just olya [345]2 years ago
4 0
I recommend using online calculators for example, look up your subject and then put “calculator” after it. Like for example, “Find the slope calculator”
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From the sum of 4x² - 2x +6 and 2x² + 4x-1, subtract 5x2 + 2x -4.
ikadub [295]

Answer:

  • x² + 9

Step-by-step explanation:

<u>Add:</u>

  • 4x² - 2x + 6 + 2x² + 4x - 1 = 6x² + 2x + 5

<u>Subtract:</u>

  • 6x² + 2x + 5 - 5x² - 2x + 4 = x² + 9
3 0
2 years ago
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Sean borrowed some money from his friend in order to help buy a new video game system. Sean agreed to pay back his friend $10 pe
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Answer: (10)9

Step-by-step explanation:

6 0
3 years ago
in the final event of a track meet, 6 runners run a 100 meter dash. A) How many possible arrangements are there for the medal wi
ohaa [14]
6 runners, 3 medals, how many ways to give them? well, runner say 2 could get gold or not, bronze or not and silver or not, and so can any other runnner, and the order "does matter", it makes a distinction, thus, is a Permutation

\bf _nP_r=\cfrac{n!}{(n-r)!}\qquad \qquad _6P_3=\cfrac{6!}{(6-3)!}
3 0
3 years ago
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Erika's first and second quarter grades are shown below. What grade does she need in
Anarel [89]

Answer:

She would need an 83 in math if she wants to have an overall average equivalent to the first quarter . Tell me if im wrong

Step-by-step explanation:

6 0
2 years ago
What is the total number of possible 4-letter arrangements of the letters m-a-t-h if each letter is used exactly once in each ar
MariettaO [177]

9514 1404 393

Answer:

  24

Step-by-step explanation:

The number of permutations of 4 items is 4! = 24.

  math, maht, mtah, mtha, mhat, mhta,

  amth, amht, atmh, athm, ahmt, ahtm,

  tmah, tmha, tamh, tahm, thma, tham,

  hmat, hmta, hamt, hatm, htma, htam

7 0
2 years ago
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