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Alla [95]
3 years ago
11

Name three fractions whose decimal equivalent is 0.40.draw a picture if it helps you explains

Mathematics
1 answer:
RideAnS [48]3 years ago
5 0
0.40 is actually 2/5.

2/5=4/10=8/20=16/40

How did I create all of these fractions?

Quite simple... I multiplied each fraction by 1... What do you mean?

2/5*2/2=4/10

2/2 is one by the way.

4/10*2/2=8/20.

You get the idea?
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Let $f(x) = x^2$ and $g(x) = \sqrt{x}$. Find the area bounded by $f(x)$ and $g(x).$
Anna [14]

Answer:

\large\boxed{1\dfrac{1}{3}\ u^2}

Step-by-step explanation:

Let's sketch graphs of functions f(x) and g(x) on one coordinate system (attachment).

Let's calculate the common points:

x^2=\sqrt{x}\qquad\text{square of both sides}\\\\(x^2)^2=\left(\sqrt{x}\right)^2\\\\x^4=x\qquad\text{subtract}\ x\ \text{from both sides}\\\\x^4-x=0\qquad\text{distribute}\\\\x(x^3-1)=0\iff x=0\ \vee\ x^3-1=0\\\\x^3-1=0\qquad\text{add 1 to both sides}\\\\x^3=1\to x=\sqrt[3]1\to x=1

The area to be calculated is the area in the interval [0, 1] bounded by the graph g(x) and the axis x minus the area bounded by the graph f(x) and the axis x.

We have integrals:

\int\limits_{0}^1(\sqrt{x})dx-\int\limits_{0}^1(x^2)dx=(*)\\\\\int(\sqrt{x})dx=\int\left(x^\frac{1}{2}\right)dx=\dfrac{2}{3}x^\frac{3}{2}=\dfrac{2x\sqrt{x}}{3}\\\\\int(x^2)dx=\dfrac{1}{3}x^3\\\\(*)=\left(\dfrac{2x\sqrt{x}}{2}\right]^1_0-\left(\dfrac{1}{3}x^3\right]^1_0=\dfrac{2(1)\sqrt{1}}{2}-\dfrac{2(0)\sqrt{0}}{2}-\left(\dfrac{1}{3}(1)^3-\dfrac{1}{3}(0)^3\right)\\\\=\dfrac{2(1)(1)}{2}-\dfrac{2(0)(0)}{2}-\dfrac{1}{3}(1)}+\dfrac{1}{3}(0)=2-0-\dfrac{1}{3}+0=1\dfrac{1}{3}

6 0
3 years ago
What's the exact value of tan 15°?
marusya05 [52]

Answer:

The answer is 0.267949192

Step-by-step explanation:

I hope that is enough numbers.

3 0
3 years ago
Find the value of: 0.0279 divided by 0.00009
Zina [86]

Answer:

310 ‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎

4 0
3 years ago
Read 2 more answers
Malcolm has 1/2 gallon of soup. He pours the same amount of soup into 8 bowls. Which equation represents the fractional part of
zubka84 [21]
8n = 1/2Gallon
To be more realistic, the answer would be 8 ounces in each bowl, because 128ounces are in a Gallon, and half of that is 64. 64 divided by 8(amount of bowls) is 8.
4 0
3 years ago
If the perimeter of the rectangle to the right is 96 ​inches, find the value of x
abruzzese [7]
You must have an illustration to give an idea what x represents. If not, then we can never find a way to answer this for you. However, for educational purposes, let me just suppose a figure for us to solve. The diagram is shown in the attached picture.

The rectangle has dimensions of 6 + x by x units, where x is the width and (6+x) is the length. If you are given the perimeter of the rectangle, then the working equation to be used is shown below.

Perimeter = 2L + 2W

Generally, perimeter is the sum of all sides of the figure. Since rectangle is defined to be made up of two sets of equal parallel sides called length and width, the perimeter is simplified to be that way. Substituting the values,

96 inches = 2(6+x) + 2x
96 = 12 + 2x + 2x
96 = 12 + 4x
4x = 96 - 12
4x = 84
x = 84/4
x = 21 inches

6 0
4 years ago
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