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3 years ago

Help please?? 50 points!

Mathematics

2 answers:

Schach [20]3 years ago

7 0

$6 \sqrt{3}$
is the correct answer

Rudiy273 years ago

6 0

The triangle ABC and the triangle BCD are similar, therefore

$\dfrac{3+9}{x}=\dfrac{x}{9}\ \ \ |cross\ multiply\\\\x^2=12\cdot9\\\\x^2=108\to x=\sqrt{108}\\\\x=\sqrt{36\cdot3}\\\\x=\sqrt{36}\cdot\sqrt3\\\\\boxed{x=6\sqrt3}$

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Is is square root of 1.6875 a rational number

mamaluj [8]

Question:

Is square root of 1.6875 a rational number ?

Answer:

Square root of 1.6875 a rational number is not a rational number

Solution:

Given that we have to find square root of 1.6875 and determine if it is rational number or not

Let us first find square root of 1.6875

$\sqrt{1.6875} = 1.29903810568$

Let us understand about rational number

A rational number is a number that can be expressed as a fraction (ratio) in the form $\frac{p}{q}$ where p and q are integers and q is not zero.

When a rational number fraction is divided to form a decimal value, it becomes a terminating or repeating decimal.

So the number 1.29903810568 is not a rational number

In other words we can say,

Only the square roots of square numbers are rational. Here 1.6875 is not a perfect square. So it is not rational number

4 0

3 years ago

Can someone explain how to solve the table of values?

11Alexandr11 [23.1K]

Answer:

By putting some values of x find the y values

Step-by-step explanation:

for example, let x=-1 and x=2y

then -1=2y

y=-1/2

I hope it helps

8 0

3 years ago

Pls help asap solve each inequality 9n - 1 < 10n 5h ≤ 12 + 4h

Stella [2.4K]

Here try this answer

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2 years ago

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Okay Adam has 16.45 kg of flour and he use a 6.4 kg to make his Hot Cross Buns the remaining flour is exactly enough to make 15

Karolina [17]

16.45 - 6.4 = 10.05kg of flour to make 15 batches of scones
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