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kompoz [17]
3 years ago
8

3x + 2.5 = 6.1 What is x ?

Mathematics
2 answers:
vazorg [7]3 years ago
8 0

Answer:

1.2

Step-by-step explanation:

2.5 - 6.1 = 3.6

3.6 / 3 = 1.2

Natalija [7]3 years ago
6 0

Answer:x=1.2

Step-by-step explanation:

3x+2.5=6.1

3x=6.1-2.5

3x=3.6

x=1.2

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When you divide a whole number by a decimal less than 1, the quotient is greater than the whole number. Why?
LuckyWell [14K]
1 can be interpreted as a "whole" thing, and smaller than 1 is a part of a thing.

imagine: if you have some cakes and you count the number of cake pieces, those will be more than the number of cakes: as each cake will have more than one piece! (otherwise it wouldn't be called a piece!)

so the result of a division by a fraction is bigger than the original number, there are more parts than wholes in the results, as each whole has multiple parts!

for example: divide 3 cakes into pieces which are 1/4th of a cake. how many such pieces would there be? 12! more than the 3 original cakes;

is this possible to understand? tell me if not!
8 0
4 years ago
Please help!<br> look at the photo (again lol)
ki77a [65]

Answer:

32

Step-by-step explanation:

Because if you put the lack of other side to the other side, it will complete.

One roll = 4

eight rolls = 4 × 8 = 32

4 0
3 years ago
Read 2 more answers
What is the <br> The product of -2 and a number minus six is greater than -18.
Fed [463]
Answer: x>-6

Explanation: -2x -6>-18
-2x >-12
-x>6
X>-6
6 0
4 years ago
Please help me ASAP easy problem giving brainlist!!
never [62]

Answer:

x ≥ 1

Step-by-step explanation:

Since it's a closed circle x could also be equal to 1. Also, since the arrow is pointing away from 1 the answer of x is greater than 1, therefore the answer is x ≥ 1.

8 0
4 years ago
Use Cramer’s Rule to solve system of equation.
alisha [4.7K]

\left\{\begin{array}{ccc}5x+2y=4\\3x+4y+2z=6\\7x+3y+4z=29\end{array}\right\\\\A=\left[\begin{array}{ccc}5&2&0\\3&4&2\\7&3&4\end{array}\right]\\\\\det A=5\cdot4\cdot4+3\cdot3\cdot0+2\cdot2\cdot7-7\cdot4\cdot0-3\cdot2\cdot5-3\cdot2\cdot4=54\\W_x=\left[\begin{array}{ccc}4&2&0\\6&4&2\\29&3&4\end{array}\right]\\\det W_x=4\cdot4\cdot4+2\cdot2\cdot29+6\cdot3\cdot0-29\cdot4\cdot0-3\cdot2\cdot4-6\cdot2\cdot4=108

W_y=\left[\begin{array}{ccc}5&4&0\\3&6&2\\7&29&4\end{array}\right]\\\det W_y=5\cdot6\cdot4+3\cdot29\cdot0+4\cdot2\cdot7-7\cdot6\cdot0-29\cdot2\cdot5-3\cdot4\cdot4=-162\\W_z=\left[\begin{array}{ccc}5&2&4\\3&4&6\\7&3&29\end{array}\right]\\\det W_z=5\cdot4\cdot29+3\cdot3\cdot4+6\cdot2\cdot7-7\cdot4\cdot4-3\cdot6\cdot5-3\cdot2\cdot29=324\\\\x=\dfrac{\det W_x}{\det A}=\dfrac{108}{54}=2\\\\y=\dfrac{\det W_y}{\det A}=\dfrac{-62}{54}=-3\\\\z=\dfrac{\det W_z}{\det A}=\dfrac{324}{54}=6

5 0
3 years ago
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