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fomenos
3 years ago
12

Plz help!!!! Number 23

Mathematics
1 answer:
Minchanka [31]3 years ago
7 0

Answer:

 (0 + m)/2, (0 + n)/2.

Step-by-step explanation:

The  x coordinate of the  midpoint must be halfway  between the x coordinates of  A and B, and the y coordinate must be  found in the same way.

So the midpoint is  (0 + m)/2, (0 + n)/2.

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The city council is planning a long, narrow park with a playground at one end and a fountain at the other. They want the playgro
ipn [44]

Answer:

The following are some inequalities that represent the possible position of the playground.

2x ≥ -2 and x < -3

x + 3 ≤ 1 and –x > -3

x + 4 ≤ 2 and x + 4 > 7

2x – 1 ≥ -5 and 3x < 9

The city council planning for playground, that is more than 5 blocks from fountain and at least 2 blocks from center of park.

A solid dot on negative two points less than -2 and a circle dot on positive three points in the direction indicating greater than 3. So the right inequality is x + 3 ≤ 1 and –x > -3. That represents the possible position of ground.

Hence, the inequality x + 3 ≤ 1 and –x > -3 is the playground's possible position.

8 0
3 years ago
I want to be a math tutor but i'm only in 8th grade. Let me know if you need my help! ^-^
frozen [14]
Meeeee I have a question that I need help on please check it out and try to help me
8 0
3 years ago
Read 2 more answers
Solve for x. Show each step of the solution. 4.5(4 − x ) + 36 = 202 − 2.5(3x + 28)
Xelga [282]

Answer:

drdh

Step-by-step explanation:


7 0
4 years ago
Evaluate AB whenA 13 -2 6 and B4O A)233 2 6O B) 12 8 246 4-123 2 -6O C) 128 246 4 12O D) No solution
kiruha [24]
The answer is A) -23

A is a 1x3 Matrix while B is 3x1 Matrix. Since A has the same number of rows as that of the number of columns of B, they can be multiplied. A has 1 row and B has 1 column. So, their products is a 1x1 Matrix. 
Simply, the operation is:
(3)(-1) + (-2)(4) +(6)(-2) = -23
7 0
3 years ago
In triangle ABC, the measure of angle BCA is 90, segment AC is 12 units, and segment BC is 9 units. If D is a point on hypotenus
Lubov Fominskaja [6]

Answer:

CD = 6 units

Step-by-step explanation:

In triangle ABC , AB is the hypotenuse then    AB =√(BC)² + (AC)²  = √(12)² + (9)²   =  15

AB = 15

sin ∠ABC  12/15   = 0,8   Then   arcsin (0.8)  =  53,1°

∠ABC  = 53,1°      and   ∠BAC  =  36,9°

Now the hypotenuse is 15 units and we need to find the lenght of segment

CD. If we divide the hypotenuse in three equal segment (of lenght 5 each) we at the same time are dividing the ∠ACB ( 90°),  in three equals angles of

30°.

If we now apply sin law

sin 30°/ 5    = sin 36,9°/CD

Then    CD  = 5 * sin 36.9° / sin 30°   ⇒  CD =[ 5* (9/15) ] / 1/2

CD = 6 units

3 0
4 years ago
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