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adell [148]
3 years ago
6

The teacher kept track of how long it took students to finish a test. After 20 minutes, 3 students had finished the test.

Mathematics
1 answer:
spin [16.1K]3 years ago
5 0
Well I would say 11 kids after 70 minutes
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20 POINTS~<br><br> 2/5 |5x+10| -14 &gt; -6<br> Please explain both answers
Pavlova-9 [17]

Answer:

x2

Step-by-step explanation:

We have the inequality:

\frac{2}{5}|5x+10|-14>-6

First, we can factor out a 5 from our absolute value. This yields:

\frac{2}{5}(5|x+2|)-14>-6

Simplify:

2|x+2|-14>-6

Add 14 to both sides:

2|x+2|>8

Divide both sides by 2:

|x+2|>4

Definition of Absolute Value:

x+2>4\text{ or } -(x+2)>4

Solve each case individually:

Case 1:

x+2>4

Subtract 2 from both sides:

x>2

Case 2:

-(x+2)>4

Divide both sides by -1. Flip the sign:

x+2

Subtract 2 from both sides:

x

So, our answers are:

x2

Since our inequality is a <em>greater than</em>, we will have an "or" inequality.

So, our answer is all values left to the first solution and all values to the right of the second solution:

x2

And we're done!

5 0
3 years ago
If set A has 4 elements and B has 3 elements then set n(AXB) is a) 12 b) 14 c) 24 d) 7
Karo-lina-s [1.5K]

Answer:

The correct option is a.

Step-by-step explanation:

Given information:

Number of elements in set A = 4

Number of elements in set B = 3

We need to find n(A × B). It means we have to find the number of elements in set A × B.

If P and Q are two sets with elements m and n respectively, then the number of element in the set P × Q is m × n.

n(A\times B)=n(A)\times n(B)

n(A\times B)=4\times 3

n(A\times B)=12

The value of n(A × B) is 12. Therefore the correct option is a.

8 0
3 years ago
Name the slope of the equation y= 2/3x + 1
umka21 [38]

Answer:

Step-by-step explanation:

y=mx+b where m is the slope of the line so the slope of this line is 2/3

3 0
3 years ago
Read 2 more answers
Why is this statement false?<br> If a number has 2 and 4 as factors, then it has 8 as a factor.
Andrew [12]

Answer:

It is false

Step-by-step explanation:

It is false because 12 has the factors of 2 and 4 but 8 is not a factor of 12.

6 0
3 years ago
90units needed 8 units per case what's the #of cases &amp; # of additional units
Kobotan [32]

Answer:

# of cases: 11

Additional units: 2

Step-by-step explanation:

If each case can hold 8 units, and we want to find the total # number of cases, we have to divide the # of units (8) for one case by the total # units (90).

As you can see, after dividing by 8, we have a total of 11 cases and a remainder of 2 units. The remainder will be the # of additional units because we cannot have another case filled with 8 units.

3 0
2 years ago
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