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jasenka [17]
3 years ago
12

Help please NO LINKS!!!!! special right triangles (radical answers)

Mathematics
2 answers:
olya-2409 [2.1K]3 years ago
5 0
The answer is 6 root 2
AnnyKZ [126]3 years ago
4 0

Answer:

x = \sqrt{6}

Step-by-step explanation:

Since the given triangle is equilateral the all 3 sides would be:

\sqrt{6} +\sqrt{6} or \sqrt{12}. Now we know that the base of the right triangle is \sqrt{6} and the hypotenuse is \sqrt{12}. Therefore we can say;

A² + B² = C²

(\sqrt{6})² + x² = (\sqrt{12})²

6 + x² = 12

x² = 12 - 6

x² = 6

x = \sqrt{6}

Therefore; <u>x = </u>\sqrt{6}<u> is the length of x</u>, in simplest radical form.

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Identify is this is percent increase or percent decrease, then calculate percentage
vlabodo [156]

<em>Last year the chess club had 30 members. This year the club has 24 members. </em>

Last year, the chess club had 30 members. This year, the club has 24 members. Since this year had less than last year ( 30 > 24), the percent will be decreasing.

To find the percent decrease, you have to use the following formula.

\frac{Difference}{Original} \times 100

Difference refers to the difference between the two numbers, 24 and 30. The difference between 24 and 30 is 6. Original refers to the original number, which is last year's amount of members in the chess group. Therefore, original = 30.

Substitute the numbers into the formula.

\frac{Difference}{Original} =\frac{6}{30} =0.2

To convert the decimal to a fraction, multiply the decimal by 100.

0.2 \times 100 = 20 \%

The answer is the number of chess members decreased by 20%.

____

Since I started off by identifying whether it was decreasing or increasing, I did the work a bit differently. When finding the difference, you would usually subtract 30 from 24, which results in -6. Above I used 6, but if you used -6, you would end up with a result of -20%, which means it decreased by 20%. They bot end up with the same result, but you don't always have to first identify whether it's decreasing or increasing.

____

3 0
3 years ago
At a local Dunkin’ Donuts, a survey showed that out of 1,300 customers eating lunch, 520 ordered coffee with their meal. What pe
k0ka [10]

First subtract the number that did, to find the number that didn't.

1300 - 520 = 780 customers did not order coffee.

Now divide the number who didn't order coffee by total number of customers:

780 / 1300 = 0.6

Multiply by 100 to get the percent:

0.6 x 100 = 60% did not order coffee.

5 0
3 years ago
Please help will give brainliest to first correct answer
klio [65]

Answer:

A (i think)

Step-by-step explanation:

A tiling or tessellation of a flat surface is the covering of a plane using one or more geometric shapes, called tiles, with no overlaps and no gaps. In mathematics, tessellations can be generalized to higher dimensions and a variety of geometries. A periodic tiling has a repeating pattern.

5 0
3 years ago
Read 2 more answers
Solve for x: 5x+7=3x−9.
ludmilkaskok [199]

To solve for x in the given equation;

5x+7=3x-9

We start by collecting like terms, as follows;

5x-3x=-9-7

When a number crosses the sign of equality, the sign in front of it switches. Positive numbers becomes negative, and vice versa.

We would now have;

\begin{gathered} 5x-3x=-9-7 \\ 2x=-16 \\ \text{Divide both sides by 2;} \\ \frac{2x}{2}=\frac{-16}{2} \\ x=-8 \end{gathered}

ANSWER:

The answer is x = -8

6 0
1 year ago
What is the value of x
NeTakaya

Answer:

x = 31

Step-by-step explanation:

x + x + 28 = 90

2x + 28 = 90

2x = 62

x = 31

6 0
3 years ago
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