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matrenka [14]
3 years ago
11

What is the sum and classification of

rmula1" title="\frac{2}{5} + \sqrt{88}" alt="\frac{2}{5} + \sqrt{88}" align="absmiddle" class="latex-formula">
A- 9.78083151..., irrational

B - 9.78083151..., rational

C-13.38083151..., irrational

D- 13.38083151..., rational
Mathematics
2 answers:
aleksandrvk [35]3 years ago
8 0

Answer:

The answer is def. A.

Georgia [21]3 years ago
3 0

Answer: OPTION A.

Step-by-step explanation:

By definition:

A number is Rational when it can be written as a simple fraction.

A number is Irrational when it cannot be written as a simple fraction.

Notice that:

\frac{2}{5} is a Rational number.

\sqrt{88}=2\sqrt{2} It is an irrational number.

Therefore, the sum of these numbers is an Irrational number:

\frac{2}{5} + \sqrt{88}=\frac{2}{5} + 2\sqrt{22}=9.78083151...

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Lunna [17]

Answer:

pretty sure it's 15 but if you used my answer and it was wrong srr

7 0
2 years ago
You are building a shelf that fits in a corner. In the figure, the entire shelf is △XYZ. Each unit in the coordinate plane repre
natima [27]

Complete Question: You are building a shelf that fits in a corner in the figure the entire shelf is XYZ each unit in the coordinate plane represents one inch find the area of the shelf.

Answer:

112.5 units²

Step-by-step explanation:

Area of the shelf = ½*base*height.

The base is the distance between Z(0, 5) and Y(15, 5)

The height is the distance between X(15, 20) and Y(15, 5).

Therefore area of the shelf = ½*ZY*XY

Use the distance formula to find ZY and XY.

Distance between Z(0, 5) and Y(15, 5):

ZY = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

Let,

Z(0, 5) = (x_1, y_1)

Y(15, 5) = (x_2, y_2)

ZY = \sqrt{(15 - 0)^2 + (5 - 5)^2}

AB = \sqrt{(15)^2 + (0)^2}

AB = \sqrt{225 + 0} = \sqrt{225}

AB = 15

Distance between X(15, 20) and Y(15, 5):

XY = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

Let,

X(15, 20) = (x_1, y_1)

Y(15, 5) = (x_2, y_2)

XY = \sqrt{(15 - 15)^2 + (5 - 20)^2}

XY = \sqrt{(0)^2 + (-15)^2}

XY = \sqrt{0 + 225} = \sqrt{225}

XY = 15

Area of shelf = ½*15*15 = ½*225 = 112.5 units²

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3 years ago
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Anni [7]

Answer:

y=-1 : )

Step-by-step explanation:

(Brainliest Please)

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X+ 2y=3 and x=5 in y=mx+b form​
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Natalija [7]

Answer:

2x -3 =2x + 3

Step-by-step explanation:

Addition is commutative so as subtraction so 2x-3=2x+3

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