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riadik2000 [5.3K]
3 years ago
11

Using significant digits calculate (3.89 + 0.046) x 7.221

Mathematics
1 answer:
enyata [817]3 years ago
8 0
The full answer is 28.421856
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Perimeter of an isosceles triangle is 35 cm if the length of a the congruent sides is 3 times the length of the third side what
Dimas [21]

Let the length of the shortest side = x

The two longer sides that are equal = 3x

The are two equal longer sides, so their total is 3x + 3x = 6x

3x+ 3x + x= 35  Collect like terms on the left

7x = 35               Divide by 7  on both sides

x = 35/7

x = 5

Answer

Two long sides -- 15 cm each

Shortest side -- 5 cm

5 0
3 years ago
(b)Newton has bought 12 dozen copies in Rs 4320. His expenditure to bring the copies
Alexeev081 [22]

Answer:

30%

Step-by-step explanation:

4320 - 288 = 4032

4032/12 =336 per copies

So, he sold them in 5760

5760 - 4032 = 1728

(1728/5760)*100 = 30%

8 0
3 years ago
If \: x + y + z = 0 \: then \: show \: that \: {x}^{3} + {y}^{3 } + {z}^{3} =3xy<br>​
tankabanditka [31]

Answer:

Given

x+y+z=0

⟹x+y=−z

Cubing on both sides

(x+y) 3 =(−z) 3

⟹x 3 +y 3 +3x 2y+3xy 2 =−z 3

⟹x 3 +y 3 +3xy(x+y)=−z 3

⟹x 3+y 3+3xy(−z)=−z 3

⟹x 3 +y 3−3xyz=−z 3

⟹x 3 +y 3 +z 3 =3xyz

Step-by-step explanation:

Hope it is helpful.....

8 0
3 years ago
Match all of the description to the term (Match all of the letters with the numbers).
Gnom [1K]
1. archaic

2. evangelists


3. Norman’s


4. John Wycliffe


5. Vulgar
6 0
3 years ago
What happens to the value of the expression 35+k as k decreases
Arisa [49]
The answer will also decrease.

5 0
3 years ago
Read 2 more answers
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