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anygoal [31]
3 years ago
14

True or False 4x + 2y - x = 3x + 2y

Mathematics
1 answer:
Zigmanuir [339]3 years ago
3 0

Answer:

False

Step-by-step explanation:

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Guys help me with a) and b) tasks<br>ANSWER:<br>a) 40<br>b) 25<br>Thanks&lt;3​
umka21 [38]

Step-by-step explanation:

there are 2 similar triangles : ABE and DCE

that means they have the same angles, and the scaling factor from one triangle to the other is the same for every side.

and that means that

DE/AE = EC/BE (= DC/AB)

we know that

AE = AD + DE

BE = BC + EC

a.

so, we have actually

DE/(AD+DE) = EC/(BC+EC)

DE/(10+DE) = 8/(2+8) = 8/10 = 4/5

DE = 4(10+DE)/5

5DE = 4(10+DE) = 40 + 4DE

DE = 40 cm

b.

AD/DE = 3/5

BC/EC must be 3/5 too.

15/EC = 3/5

15 = 3EC/5

75 = 3EC

EC = 25 cm

8 0
2 years ago
Sam is saving money to buy himself a new phone. He currently has $95. He is able to save about $20 a week. Let represent how muc
Sunny_sXe [5.5K]

Answer:

the correct answer is d

Step-by-step explanation:

w(s)=weeks saved and 20s is the gain of 20 dollars every week. and the 95 is the starting amount that sam had

4 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
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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

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3 years ago
Writing expressions of lines ​
Sergeeva-Olga [200]

Answer:

fyysfyehFHayaursusrrw

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