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Vaselesa [24]
3 years ago
15

 9

Mathematics
1 answer:
wlad13 [49]3 years ago
4 0
First one;
Every 20th person who passes the student centre.
The people passing the student centre are very likely to be students and you're very likely to get a mix of lots of different students producing reliable results.
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434 round to the nearest ten
stealth61 [152]
434 rounded to the nearest ten is 430. 
Hope this helps 
7 0
3 years ago
Read 2 more answers
Chanel found a used bookstore that sells pre-owned DVDs and CDs. DVDs cost $9 each, and CDs cost $6 each. Chanel can spend no mo
Vadim26 [7]

The question is incomplete. Kindly see the correct question below

Chanel found a used bookstore that sells pre-owned DVDs and CDs. DVDs cost $9 each, and CDs cost $6 each. Chanel can spend no more than $108 Write an inequality that represents this

Answer:

9D +6C < 108

Step-by-step explanation:

Let the price of Dvd be D

Let the price of CDs be C

Hence the inequality can be represented as follows

9D + 6C < 108

5 0
3 years ago
Please hurry find the measure of P
Inessa [10]

Answer:

m∠P  = 65°

Step-by-step explanation:

An Isosceles triangle has two sides of equal length and two interior angles of equal measure.

Sum of interior angles of a triangle = 180°

If QO ≅ PQ and the enclosed m∠Q = 50° then m∠P ≅ m∠O

⇒ m∠Q + m∠P + m∠O = 180

⇒ 50 + m∠P + m∠O = 180

⇒ m∠P + m∠O = 130

As m∠P ≅ m∠O:

⇒ m∠P  = 130 ÷ 2 = 65°

7 0
2 years ago
Read 2 more answers
Lm (51 + m) + 21² (m - 3) + 6L (m² +L) ​
Fofino [41]

Answer:

Step-by-step explanation:

Given :

l + m + n = 9

l²+ m² + n²= 31

l + m + n = 9

On squaring both sides

(l + m + n)²= 9²

(l²+m²+n²+2(lm+mn+nl) = 81

31 +2(lm+mn+nl) = 81

2(lm+mn+nl) = 81 - 31

2(lm+mn+nl) = 50

(lm+mn+nl) = 50/2

(lm+mn+nl) = 25

Hence, the value of (lm+mn+nl) = 25

4 0
4 years ago
Read 2 more answers
Which statement about rigid transformations is true?. . A rigid transformation preserves only the side lengths of a polygon.. .
Vladimir [108]
A rigid transformation <span>is a transformation of the plane that preserves length. In a rigid transformation the initial shape and the image shape are congruent.
</span>
Main properties: 
<span>1. distance (lengths of segments remain the same)
</span><span>2. angle measures (remain the same)</span><span>
</span><span> 3. parallelism (parallel lines remain parallel)</span><span>
</span><span> 4. collinearity (points remain on the same lines)</span><span>
</span><span> 5. orientation (lettering order remains the same)
</span><span>
</span><span>Taking these properties into account, the correct choice is C.</span>

8 0
3 years ago
Read 2 more answers
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