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valina [46]
3 years ago
10

There are 21 students  in Mr.Tentlers  class The students divided themselves evenly  into 3 groups.how many  students  are in ea

ch  groups?
Mathematics
2 answers:
iVinArrow [24]3 years ago
6 0
21:3=7 \ students \ are \ in \ each \ group
arsen [322]3 years ago
4 0
There are 7 in each grops because if 3x7 is 21 then 21 divide by 3 is 7
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Julia has 2 identical rooms in her house. If each room measures 8 feet on one side and 12 feet on another, what is the total are
levacccp [35]
L = 12 ft
W = 8 ft
One room has area:
A1 = L · W = 12 · 8 = 96 ft²
The total area of rooms:
A = 2 · 96 = 192 ft² 
6 0
3 years ago
Calculate the gradient of the straight line which joins A(2,-3) and B(6,9)<br>​
Pie

Answer:

Gradient: m = 3

Step-by-step explanation:

m = change in y/change in x

m = \frac{Y2-Y1}{X2-X1}

m = \frac{9-(-3)}{6-(2)}

m = 12/4

m = 3

5 0
3 years ago
Simplify the polynomial. Then find its value for the given value of the variable.
vekshin1

Answer:

Step-by-step explanation:

Simplified expression:

3x^3 -x^3 +5x^3-9x^3

2x^3 +5x^3-9x^3

7x^3 -9x^3

-2x^3

If x = -1, the value of the expression is:

-2x^3

-2(-1^3)

-2(-1)

2

Hope this helps!

3 0
2 years ago
I have a triangular shaped base. I am composed of 3 rectangular faces. I am a 3D figure. What am I?
Alisiya [41]

Answer:

<em>Triangular prism </em>

Step-by-step explanation:

4 0
2 years ago
On one side of the balance scale, Henry placed a 6-gram weight. On the other side of the scale, he placed a ballet slipper.
olchik [2.2K]

Answer:

  • <u><em>A. 6,000 miligrams</em></u>

Explanation:

A <em>balance scale</em> is balanced when the weights on both sides are equal. Then, since the image shows that both sides are equal, the weight of the <em>6-gram weight</em>, placed by Henry on one side of the balance scale is equal to the weight of the <em>ballet slipper </em>placed on the other side.

  • Weight of the balance slipper = weight of the 6-gram weight
  • Weight of the balance slipper = 6 grams

<u>Conversion of units: </u>

  • 6 grams × 1,000miligrams/1gram = 6,000 miligrams

  • Weight of the balance slipper = 6,000 miligrams

That is the option A.

7 0
3 years ago
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