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Alexxx [7]
3 years ago
11

Please help ,,

Mathematics
1 answer:
Zinaida [17]3 years ago
4 0

Answer:

h

Step-by-step explanation:

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Solve the inequality please- 21 ≥ 3(a- 7) +9 Thank you so much
Alexeev081 [22]

Answer:

<h2>         a ∈ (-∞, -3></h2>

Step-by-step explanation:

<h3>- 21 ≥ 3(a - 7) + 9</h3><h3>- 21 ≥ 3a - 21 + 9</h3>

  +21         +21

<h3>    0 ≥ 3a + 9 </h3><h3>3a + 9 ≤ 0</h3>

      -9      -9

<h3>3a ≤ - 9</h3>

 ÷3    ÷3

<h3>  a ≤ -3 </h3><h3>a ∈ (-∞, -3></h3>
8 0
3 years ago
Which relationships hold true for the sum of the magnitudes of vectors u and v, which are perpendicular?
HACTEHA [7]

check the picture below.


notice, the sum of u+v yields the red vector, and its magnitude is smaller than the sum of the other two green ones.

5 0
3 years ago
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salma is 1.45 meters tall. at 3p.m she measures the length of a tree's shadow to 29.35 meters. she stands 24.3 meters away from
Sophie [7]

Answer:

23.67

Step-by-step explanation:

7 0
3 years ago
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What is the ratio of hexagons to rectangles?
Butoxors [25]

Answer:

4:6

Step-by-step explanation:

um there is no picture to count from so i will created a random one which was 4:6

7 0
3 years ago
This is homework. please help with the answer for both 11a and 11b :))
RideAnS [48]
11a:
3x+5=5x-57
3x-5x=-57-5
-2x=-62
x=31
11b:
2x+2x+4x+150+4x+150=360
12x+300=360
12x=360-300
12x=60
x=5

hope this helped !!
3 0
3 years ago
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