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Gelneren [198K]
3 years ago
7

Diego has 200 students in his grade which is 2 times as many as Lin. Lin’s grade has x students. Write this equation.

Mathematics
2 answers:
Gnoma [55]3 years ago
6 0
200 divided by 2 = x

Hope this helps!
Lubov Fominskaja [6]3 years ago
5 0

Answer:

200 ÷ 2 = x

Step-by-step explanation:

Diego has 2 times as many a Lin. That means to find Lin's student number, we would  have to split 200 in half.

Hope this helps!

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2. CHEMISTRY How many liters of 15% acid and
Wewaii [24]

Answer:  

<h3>         26²/₃ liters of 15% acid and 13¹/₃ liters of 33% acid</h3>

Step-by-step explanation:

Concentration            Amount of             Amount

of Solution                   Solution (L)             of Acid

    15%                                x                         0.15x

    33%                               y                         0.33y

    21%                              40                      0.21•40      

       

x + y = 40    ⇒  x = 40 - y

0.15x + 0.33y = 0.21•40

0.15(40 - y) + 0.33y = 0.21•40

6 - 0.15y + 0.33y = 8.4

  0.18y = 2.4

        y = 13¹/₃

x = 40 -  13¹/₃ = 26²/₃

8 0
2 years ago
HELP ME PLEASE!!! A Kite flying in the air has a 12 feet line attached to it. It's line is pulled and cast an 11 feet shadow. Fi
ZanzabumX [31]

Step-by-step explanation:

By Pythagoras' theorem,

12^2 = 11^2 + height^2

height = ±√12^2 - 11^2 (rej -ve value since height > 0)

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Topic: Pythagoras theorem

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5 0
3 years ago
N + 4 &gt; -9
Sav [38]

Answer:

n>-13

Step-by-step explanation:

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3 0
2 years ago
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Blizzard [7]

Answer:

\sqrt{27}

Step-by-step explanation:

Using Pythagoras' identity in the right triangle

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let h represent the hypotenuse, then

h² = 5² + (\sqrt{2} )² = 25 + 2 = 27 ( take the square root of both sides )

h = \sqrt{27} ← exact value

6 0
3 years ago
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A surveyor holds a laser range finder 3 feet above the ground and determines that the range finder is 89 feet from a building an
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.. h = d+3 = 75.8 ft
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3 years ago
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