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ruslelena [56]
3 years ago
15

In the middle school debate club, 30% of the members are in sixth grade. If there are 12 graders in the club, how many total mem

bers are there?
A) 30
B) 36
C) 38
D) 40
Mathematics
2 answers:
Yanka [14]3 years ago
7 0

Answer:

C

Step-by-step explanation:

brian ashely nick austin parker chase gabe liah  eathen jazzmin rorger matt THESE ARE ALL THE SIXTH GRADERS

Slav-nsk [51]3 years ago
6 0
The answer is D because you just multiply the percent times 40 to get 12.
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Deepak wrote out the steps to his solution of the equation StartFraction 5 Over 2 minus 3 x minus 5 plus 4 x equals negative Sta
Anna35 [415]

Answer:

Step 1 is incorrect.

Step-by-step explanation:

The given expression is :

\dfrac{5}{2}-3x-5+4x=\dfrac{-7}{4}

In step 1, Deepak rearranged the terms in order to simplify like terms together that is followed in step 2.

o, rearranging of the terms of an expression is commutative property and not distributive property.  The distributive property is generally applicable to multiplication and is given as:

x(y+z)=xy+yz

The commutative property is given as:

x+y = y +a

Therefore, adding terms by changing their order is commutative property of addition and not distributive property. Step 1 instruction is wrong.

6 0
3 years ago
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15. The container shown in the figure is filled with a liquid that weighs 50 g. Find its density.
3241004551 [841]

Answer:

  C.  0.006 g/cm³

Step-by-step explanation:

As the units tell you, density is the ratio of mass to volume. The volume of the container is found from ...

  V = πr²h = π(10 cm)²(25 cm) = 2500π cm³

Then the density is ...

  ρ = (50 g)/(2500π cm³) = 1/(50π) g/cm³

  ρ ≈ 0.006 g/cm³

_____

<em>Comment on the problem</em>

The "liquid" has about the same density as air pressurized to 75 psi.

5 0
2 years ago
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A restaurant wants to test a new in-store marketing scheme in a small number of stores before rolling it out nationwide. The new
spin [16.1K]

Answer:

2 or 4

Step-by-step explanation:

4 0
3 years ago
A rectangle with length 16cm and width 12cm is inscribed in a circle.What is the area of the region inside the circle and outsid
mario62 [17]
The area of circle is πr2.
22/7×10×10
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3 0
3 years ago
Proving the Parallelogram Diagonal Theorem
lora16 [44]

Answer:

The proof is given below.

Step-by-step explanation:

Given a parallelogram ABCD. Diagonals AC and BD intersect at E. We have to prove that AE is congruent to CE and BE is congruent to DE i.e diagonals of parallelogram bisect each other.

In ΔACD and ΔBEC

AD=BC              (∵Opposite sides of parallelogram are equal)

∠DAC=∠BCE       (∵Alternate angles)

∠ADC=∠CBE        (∵Alternate angles)

By ASA rule, ΔACD≅ΔBEC

By CPCT(Corresponding Parts of Congruent triangles)

AE=EC and DE=EB

Hence, AE is conruent to CE and BE is congruent to DE


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3 years ago
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