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artcher [175]
3 years ago
12

2/3 - 3/7 explain, please...

Mathematics
2 answers:
Artemon [7]3 years ago
7 0
Find a common denominator
the common denominator of 7 and 3 is 21
2/21 - 3/21
change the numerator
14/21 - 9/21 =5/21
Masteriza [31]3 years ago
3 0

Answer: <em>8/21</em>

Answer and work are in the picture!

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If anyone’s good with geometry, help me out please. I would really appreciate it.
lakkis [162]

Answer: X=2, PR=40

Step-by-step explanation:

given that the two triangles are equal/congruent

------------------------

solve for x

10x+5=25

10x=20

x=2

--------------------

solve for y

33=7y-2

35=7y

y=5

------------------

solve for PR

PR=8y

PR=8(5)

PR=40

Hope this helps!! :)

5 0
3 years ago
Can someone help me please??
dem82 [27]
Add all the sides together
10+15+7+8+8+2=50 ft
7 0
3 years ago
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How many terms are in the arithmetic sequence 9, 2, −5, . . . , −187?
Fantom [35]
9, 2, -5... so is going down by 7 each time, meaning the "common difference" is -7.

\bf n^{th}\textit{ term of an arithmetic sequence}\\\\&#10;a_n=a_1+(n-1)d\qquad &#10;\begin{cases}&#10;n=n^{th}\ term\\&#10;a_1=\textit{first term's value}\\&#10;d=\textit{common difference}\\&#10;----------\\&#10;a_1=9\\&#10;d=-7\\&#10;a_n=-187&#10;\end{cases}&#10;\\\\\\&#10;-187=9+(n-1)(-7)\implies -187=9-7n+7&#10;\\\\\\&#10;7n=9+7+187\implies 7n=203\implies n=\cfrac{203}{7}\implies \boxed{n=29}
4 0
3 years ago
HELP ME PLEASEEEE <br> HELPPPPPPPPPPPP
mario62 [17]

Answer:

  • y / cos x

Step-by-step explanation:

<u>Use trigonometry to help</u>

  • cos = adjacent side/hypotenuse
  • hypotenuse = adjacent side / cos

<u>Substitute values:</u>

  • Distance between the Sun and the Moon = y / cos x
7 0
3 years ago
Factor. 4x2−49y2 Enter your answer in the box.
Makovka662 [10]
4x² - 49y² = (2x)² - (7y)² = (2x - 7)(2x + 7)
4 0
3 years ago
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