3 years ago

30 is what % of 20??

Mathematics

2 answers:

ANEK [815]3 years ago

6 0

150% or 1.5 or 3/2....

shusha [124]3 years ago

3 0

150% is the answer do the math

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Solve the equation 3(x+4.5x ) = 36. Explain your reasoning THOROUGHLY.

Vesna [10]

Answer:

$x \approx 2.18$

Step-by-step explanation:

$3(x+4.5x)=36$

we can use the distributive property and get

$3(x)+3(4.5x)=36\\\\3x+13.5x=36\\\\$

and we can add like terms

$(3+13.5)x=36\\\\16.5x=36$

and know we divide both sides by 16.5

$16.5x*(\frac{1}{16.5})=36*(\frac{1}{16.5})\\\\x=\frac{36}{16.5}$

and doing the dvision we get that

$x\approx 2.18$

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3 years ago

GUYS PLEASE SOMEBODY ANSWER THIS AS QUICK AS POSSIBLE I WILL GIVE YOU 50 POINTS

sergiy2304 [10]

Answer:

part A: 30,000 is more

Step-by-step explanation:

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3 years ago

Evaluate 5^−4. Write your answer as a fraction in simplest form.<br> Can you please help me on this?

Gre4nikov [31]

Answer:

Step-by-step explanation:

5^-4 remember that a^-b=1/a^b

5^-4=1/5^4=1/625

3 0

3 years ago

the diagonals PR and QS of a rhombus intersect each other at point O. prove that 2(PQ) + 2(RS) + 2(RS)+ 2(PS) = 4 (2(OP)+2(OQ))

Svetllana [295]

Answer:

6 is the answer

Step-by-step explanation:

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3 years ago

-3x + y = -14<br> x= -2y + 14<br> Which variable should an expression be substitute for?

ICE Princess25 [194]

9514 1404 393

Answer:

Step-by-step explanation:

There is already an expression given for x, so that is the easiest variable to substitute for.

Substituting for x using the second equation, you have ...

-3(-2y+14) +y = -14

6y -42 +y = -14

7y = 28

y = 4

x = -2(4) +14 = 6

The solution is (x, y) = (6, 4).

_____

Substitution for x is the easiest.

The first equation could be rearranged to give an expression for y:

y = 3x -14

Then that can be used to substitute for y in the second equation. My lazy brain judges that to be more work.

3 0

3 years ago