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4 years ago

What is equivalent to 4/20

Mathematics

2 answers:

valentinak56 [21]4 years ago

8 0

Answer:

1/5 is the simplified answer to 4/20.

Step-by-step explanation:

When you divide the numerator and denominator by 4, you get the simplified fraction of 1/5.

Scilla [17]4 years ago

7 0

The answer to your problem is 1/5

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Find the estimates of x^2-x-2=3

Julli [10]

Answer:

$x=\frac{1+\sqrt{21}}{2}\approx 2.79\\or\ x=\frac{1-\sqrt{21}}{2}\approx -1.79$

Step-by-step explanation:

Given

Quadratic equation is

$x^2-x-2=3\\x^2-x-5=0$

Roots of the quadratic equation $ax^2+bx+c=0$ are

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\$

So, for the given equation roots are

$x=\frac{1\pm\sqrt{(-1)^2-4(1)(-5)}}{2\cdot 1}\\x=\frac{1\pm\sqrt{21}}{2}\\so, x=\frac{1+\sqrt{21}}{2}\approx 2.79\\or\ x=\frac{1-\sqrt{21}}{2}\approx -1.79$

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3 years ago

Exponents!

sweet [91]

We know that:

$x^{a+b}=x^a\cdot x^b$

and:

$(x\cdot y)^a=x^a\cdot y^a$

so:

$3^{x+2}-3^{x}=6^3\cdot3^7\\\\3^x\cdot3^2-3^x=(2\cdot3)^3\cdot3^7\\\\3^x\cdot9-3^x=2^3\cdot3^3\cdot3^7\\\\3^x\cdot9-3^x=8\cdot3^3\cdot3^7\\\\
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3 years ago

The perimeter p of the rectangle equals 30. Find the value of X?

Ilia_Sergeevich [38]

Answer:

Step-by-step explanation:

The perimeter is calculated by multiplying the sum of width and height with 2

2*(4x-2+7x+9) = 300 solve inside the parenthesis

2*(11x+7) = 300 multiply inside the parenthesis with 2

22x + 14 = 300 subtract 14 from both sides

22x = 286 divide both sides by 22

x = 13

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3 years ago

When x = 5, the value of the expression –2(x – 10) is

lara [203]

-10 + 20 = 10 is the value

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3 years ago

Read 2 more answers

Mark: 1.00

katrin [286]

×find the product of (6×+7y)and (5×-3y)

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3 years ago