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zalisa [80]
3 years ago
13

One half Of a number added to two thirds Of The number Is 21 . Find The number.

Mathematics
2 answers:
creativ13 [48]3 years ago
7 0


18. 1/2 of 18 is 9. 1/3 is 6. 6+6+9 = 21


elena-s [515]3 years ago
4 0
The number would be 18.
Half of 18 = 9
Two thirds of 18 = 12
9 + 12 = 21
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juin [17]

Answer:

{ \tt{ \frac{1}{24} m -  \frac{2}{3}  =  \frac{3}{4} }} \\  \\ { \tt{ \frac{1}{24} m =  \frac{17}{12} }} \\ m = 34

4 0
3 years ago
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Ludmilka [50]

Answer:

2.5 teaspoon.

Step-by-step explanation:

4 serve recipe need cinnamon = 1 tsp

1 serve recipe need cinnamon = 1/4 tsp

10 serve recipe need cinnamon = 1/4 * 10

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7 0
3 years ago
David rolls a fair dice 240 times. <br> How many times would David expect to roll a three?
jolli1 [7]

Answer:

40

Step-by-step explanation:

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4 0
3 years ago
Solve for x:<br><br> 2(3x - 9) = 18x<br><br> x = -3/2<br><br> x = 3/2<br><br> x = 0<br><br> x = 6
Mila [183]
Remember yo can do anything to an equation as long as you do it to both sides

so
remember distributive property
a(b+c)=ab+ac

so first distribute
2(3x)+2(-9)=18x
6x-18=18x
minus 6x both sides
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divide both sides by 12
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-9/6=x
-3/2=x

easier way is to first divide both sides by 2


x=-3/2
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Step-by-step explanation:

prove me wrong

8 0
2 years ago
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