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kirill115 [55]
3 years ago
5

The types of problems found on ancient papyri, books, and tablets focuses primarily on problems that relate to daily life. The s

olution methods for many ancient cultures are generally verbal, with mathematical statements written out in words. Why did most ancient cultures primarily write out their mathematical texts in words?
Mathematics
2 answers:
Maksim231197 [3]3 years ago
8 0

The <em><u>correct answer</u></em> is:

They had no placeholding zero.

Explanation:

Our numbering system is one of few known to have a numeral for zero. Mayans did; however, theirs never traveled the world. Babylonians were thought to have a mark for nothing, but it was more for punctuation than numerals. Neither the Romans nor the Egyptians had a number for 0 either.

Zero is key to our system of numbering, as it helps us hold place as well as representing nothing. Without it, it is easier to represent problems in words.

olga55 [171]3 years ago
8 0
Because they had not developed algebraic language, which is the use of letters and symbols to represent quantities and their relation.
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If sin θ = 2 over 7 and tan θ &gt; 0, what is the value of cos θ?
sergey [27]
Sin θ = 2 / 7
tan θ > 0
cos θ = ?

sin θ = opposite / hypotenuse
tan θ = opposite / adjacent
cos θ = adjacent / hypotenuse

short leg = opposite = 2
hypotenuse = 7
long leg = adjacent = ?

adjacent = √(7² - 2²)
adjacent = √(49 - 4)
adjacent = √45
adjacent = √9 * 5
adjacent = 3 √5

cos θ = adjacent / hypotenuse
cos θ = 3√5 / 7
6 0
3 years ago
What is the result of a dilation of scale factor 3 centered at the origin of the line 2y + 3x=10?? PLEASE HELP PLEASEEEEEEEEE
maks197457 [2]

Given:

The equation of a line is:

2y+3x=10

The line is dilated by factor 3.

To find:

The result of dilation.

Solution:

The equation of a line is:

2y+3x=10

For x=0,

2y+3(0)=10

2y+0=10

y=\dfrac{10}{2}

y=5

For x=2,

2y+3(2)=10

2y+6=10

2y=10-6

2y=4

Divide both sides by 2.

y=\dfrac{4}{2}

y=2

The given line passes through the two points A(0,5) and B(2,2).

If the line dilated by factor 3 with origin as center of dilation, then

(x,y)\to (3x,3y)

Using this rule, we get

A(0,5)\to A'(3(0),3(5))

A(0,5)\to A'(0,15)

Similarly,

B(2,2)\to B'(3(2),3(2))

B(2,2)\to B'(6,6)

The dilated line passes through the points A'(0,15) and B'(6,6). So, the equation of dilated line is:

y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)

y-15=\dfrac{6-15}{6-0}(x-0)

y-15=\dfrac{-9}{6}(x)

y-15=\dfrac{-3}{2}x

Multiply both sides by 2.

2(y-15)=-3x

2y-30=-3x

2y+3x=30

Therefore, the equation of the line after the dilation is 2y+3x=30.

3 0
3 years ago
Subtract integers<br><br> 9 - (10)
BartSMP [9]

Step-by-step explanation:

9-(10) = 9-10 = -1

Hope this helps

4 0
2 years ago
How do you solve this question?<br><br> -3x - 7 + 5x = 15
KatRina [158]

Answer:

x=11

Step-by-step explanation:

Add 7 to both sides

-3x+5x=22

combine like terms(-3x and 5x)

2x=22

divide by 2

x=11

5 0
3 years ago
If a shark can swim 27 miles in 9 hours, how many miles can it swim in 12 hours
777dan777 [17]

Answer:

36 miles

Step-by-step explanation:

given:

9 hours -------> 27 miles

1 hour ----------> 27 / 9 miles

12 hours -------> (27/9) x 12 = 36 miles

4 0
3 years ago
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