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r-ruslan [8.4K]
2 years ago
14

I need help I really don’t understand it

Mathematics
2 answers:
FinnZ [79.3K]2 years ago
5 0

Answer:

A B and D

Step-by-step explanation:

Stells [14]2 years ago
4 0

Answer:

basically your looking at which ones are like idk how to explain it but so far i see A and E look correct  maybe E and C

Step-by-step explanation:

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Identify the variation as direct, inverse, joint or combined. l=cmn
konstantin123 [22]
The answer is joint i could be wrong but hope this helps

3 0
3 years ago
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A rhombus ABCD has AB = 10 and m∠A = 60°. Find the lengths of the diagonals of ABCD.
melisa1 [442]
Three important properties of the diagonals of a rhombus that we need for this problem are:
1. the diagonals of a rhombus bisect each other
2. the diagonals form two perpendicular lines
3. the diagonals bisect the angles of the rhombus

First, we can let O be the point where the two diagonals intersect (as shown in the attached image). Using the properties listed above, we can conclude that ∠AOB is equal to 90° and ∠BAO = 60/2 = 30°. 

Since a triangle's interior angles have a sum of 180°, then we have ∠ABO = 180 - 90 - 30 = 60°. This shows that the ΔAOB is a 30-60-90 triangle.

For a 30-60-90 triangle, the ratio of the sides facing the corresponding anges is 1:√3:2. So, since we know that AB = 10, we can compute for the rest of the sides.

\overline{OB}:\overline{AB} = 1:2
\overline {OB}:10 = 1:2
\overline{OB} = \frac{1}{2}(10) = 5

Similarly, we have

\overline{AO}:\overline{AB} = \sqrt{3}:2
\overline {AO}:10 = \sqrt{3}:2
\overline{AO} = \frac{\sqrt{3}}{2}(10) = 5\sqrt{3}

Now, to find the lengths of the diagonals, 

\overline{AD} = 2(\overline{AO}) = 10\sqrt{3}
\overline{BC} = 2(\overline{OB}) = 10

So, the lengths of the diagonals are 10 and 10√3.

Answer: 10 and 10√3 units

8 0
3 years ago
can sumone just do number 17 for me thats it, ill give brainlist if correct and plz dont spam me or perposly answer knowing you
rusak2 [61]

Answer: For 17 is x=24

Step-by-step explanation:

5 0
2 years ago
Solve the equation<br> -18 + 24 = -2(x+6)
anzhelika [568]

Answer:

x = -9

Step-by-step explanation:

-18+24 = -2(x+6) Distribute and simplify

6 = -2x-12 Add 12 to both sides

18 = -2x Divide by -2 on both sides

-9 = x Here's your answer

Hope this helps! :D

3 0
1 year ago
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What is the value of the expression 18-2×(4+3)
Vika [28.1K]
The value would be 4.

First, you have to do 4 + 3 because it's in parenteces. This equals 7
Secondly, you have to do 2 x 7, which is 14.
Last you have to do 18 - 14 which is 4.
3 0
3 years ago
Read 2 more answers
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