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masya89 [10]
2 years ago
6

Three tenths of a number is 2.1 . Determine the number

Mathematics
2 answers:
Shkiper50 [21]2 years ago
7 0

3/10 N = 2.1

MULTIPLY  by 10/3 to each side

10/3 * 3/10  n = 2.1 * 10 /3

n = 2.1 * 10/3

n = 21/3

n =7

Ronch [10]2 years ago
3 0

Answer:

The number is 7.

Step-by-step explanation:

Let the number be x.

Three tenths of a number is 2.1 .

Mathematically we can denote this as:

\frac{3}{10}\times x=2.1

Now solving for x, we have ;

3x=2.1\times10

3x=21

Dividing both sides by 3;

x = 7

Hence, the number is 7.

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Given rectangular prism ABCD. Choose all of the terms that best describe each of the sets of lines or points. Points D, G and J
Yuki888 [10]

Answer:

Two points are collinear when they lie on the same line. Points are collinear but not lines. Rather when two lines lie on the same plane we say they are coplanar.

Hence, line AB and CD are NOT collinear, so they are noncollinear and they are coplanar.

Two or more lines are said to be intersecting, when the lines meet at some point, when lines are not intersecting they are said to be parallel.

Recall that one of the properties of a rectangle is that opposite sides are parallel.

Notice that line AB and CB are the opposite sides of the rectangle ABCD.

Thus, line AB and CD are not intersecting but are parallel.

Therefore, the terms that best describe lines AB and CD are  

parallel  

noncollinear  

coplanar

Step-by-step explanation:

3 0
2 years ago
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Mr. Washington is putting his DVDs on a shelf that is 10 2⁄3 inches long. If each DVD is 11⁄20 inches wide, how many DVDs can he
omeli [17]
(10 2/3)/(11/20)

(32/3)/(11/20)

(32/3)*(20/11)

640/33

19 13/33  since DVDs are integer units Mr. Washington can only have 19 DVD's side-by-side.


4 0
2 years ago
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Enrique is making a party mix that contains raisins and nuts. For each ounce of nuts, he uses twice the amount of raisins. How m
pantera1 [17]

Answer:

16

Step-by-step explanation:

x+2x=24

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6 0
2 years ago
Quadrilateral WXYZ is on a coordinate plane. Segment XY is on the line x − 3y = −12, and segment WZ is on the x − 3y = −6. Which
Nostrana [21]

Answer:

Equation shown

Step-by-step explanation:

Eq(1): x-3y=-12

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4 0
2 years ago
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For the sequence an = 2n + 1, identify the values of a0 = _____, a1 = _____, a2 = _____, and a3 = _____.
Tresset [83]

Answer:

Option A -  a_0= 2,a_1= 3,a_2= 5,a_3= 9

Step-by-step explanation:

Given : For the sequence a_n= 2^n + 1

To find : Identify the values of following?

Solution :

The nth term of the sequence is a_n= 2^n + 1

Substitute n=0,1,2 and 3

When n=0,

a_0= 2^0+ 1

a_0= 1+1

a_0=2

When n=1,

a_1= 2^1+ 1

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When n=2,

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When n=3,

a_3= 2^3+ 1

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Therefore, The value is a_0= 2,a_1= 3,a_2= 5,a_3= 9

So, Option A is correct.

4 0
2 years ago
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