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Vesnalui [34]
3 years ago
11

Треугольник напротив угла 30 градусов составляет 10 см. Найдите длину страницы напротив 45-го угла этого треугольника.

Mathematics
1 answer:
zhannawk [14.2K]3 years ago
7 0

Answer:

idkkkkkkkkkkkkkkkkkkkkkk

Step-by-step explanation:

idkkkkkkkkkkkkkkkkkkkk

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Need help fast with this question fourty points and branliest!!
Colt1911 [192]

You can use SAS, or Side Angle Side. Because BC equals EC and AC equals DC, you can get two sides. Also, angle BCA and DCE have the same angle measurement, so you can conclude, using SAS, that BA equals to ED. Also, you can also prove that these two triangles are congruent and that all of the angles are the same as well because all of the side lengths are equal.


8 0
3 years ago
Read 2 more answers
What's the answer to these simple algebra questions.
Olegator [25]

Answer:

z = \frac{979}{5} or z = 195.8

y=-30

a = 5

b = -7

x = 64

Step-by-step explanation:

5 0
3 years ago
1) What can u do to get 2x alone on the left side?
CaHeK987 [17]

Answer:

1)

82.5 - <u>8</u><u>2</u><u>.</u><u>5</u> + 2x = 338.5 - <u>8</u><u>2</u><u>.</u><u>5</u>

<u>2</u>x = <u>2</u><u>5</u><u>6</u>

2)

2x ÷ <u>2</u> = 256 ÷ <u>2</u>

x = <u>1</u><u>2</u><u>8</u>

Step-by-step explanation:

1)

In order to get rid 82.5, you have to substract the same value on both side to get a 0 value.

2)

In order to find the value of x, you have to divide the value that is sticked with x which is 2. As you divide 2 by 2, you will get 1 as a single value of x so you have to divide 2 to both side too.

5 0
3 years ago
Can you please do 2 and 3
Masja [62]

Answers:

<h2>2. 17.5</h2><h2>3a. 6</h2><h2>3b. greater</h2><h2>3c. add 1 to it</h2>

Step-by-step explanation:

When rounding, look at the digit that is ls to the right beside the digit in the place value to round to. If the number is greater than or equal to 5, round the digit in the place value to round to up one. If it is less than 5, do not. Let's look at some examples.

EXAMPLE 1:

23.123 round to the nearest tenth.

23.<u>1</u>23 tenths place is underlined

Digit after tenths is bold. If greater than or equal to 5, round underlined digit up. If less than 5, don't change underlined digit.

The bold number is a 2, which is less than 5, so the underlined number doesn't change.

ANSWER TO EXAMPLE 1: 23.1

EXAMPLE 2:

57.54 round to the nearest whole number

5<u>7</u>.54 Nearest whole place value is underlined

Digit after underlined digit is bold. If greater than or equal to 5, round underlined digit up one. If bold digit is less than 5, don't change the underlined digit.

The bold number is a 5, which equals 5, so the underlined number increases by 1.

ANSWER TO EXAMPLE 2: 58

Now, let's examine yours, now that we know how to round

17.46 round to the nearest tenth

17.<u>4</u>6 tenths place is underlined

Digit after tenths is bold. If greater than or equal to 5, round underlined digit up by one. If bold digit is less than 5, don't change the underlined digit.

The bold number is a 6, which is greater than 5, so the underlined number increases by 1.

ANSWER TO QUESTION: 17.5

Hope this helped :)

<em>PLEASE MARK BRAINLIEST</em>

8 0
3 years ago
2(10−x)−14=<br> plz help me &lt;3
BartSMP [9]

How to get answer:

\mathrm{Apply\:the\:distributive\:law}:\quad \:a\left(b-c\right)=ab-ac\\a=2,\:b=10,\:c=x\\=2\cdot \:10-2x\\\mathrm{Multiply\:the\:numbers:}\:2\cdot \:10=20\\=20-2x\\=20-2x-14\\Group\:like\:terms\\=-2x+20-14\\\mathrm{Add/Subtract\:the\:numbers:}\:20-14=6\\Answer: =-2x+6

4 0
3 years ago
Read 2 more answers
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