MATHEMATICS MIDDLE SCHOOL

How many triangles can be made if two sides are 4 inches and the angle between them is 90°?

Answers

Answer 1
Answer: 2 triangles can be made

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What number is 70% of 200

Answers

70% = 0.7
0.7 of 200 = 0.7*200
                 = 140
So, 70% of 200 is 140
it's 140

200/x=100/70
(200/x)*x=(100/70)*x       - we multiply both sides of the equation by x
200=1.42857142857*x       - we divide both sides of the equation by (1.42857142857) to get x
200/1.42857142857=x 
140=x 
x=140

Which method of solving quadratic equations would be the easiest to use to find the solution for x2 – 13x + 12 = 0?

Answers

Factoring would be the easiest.

What is the LCM of 2 and 5

Answers

To find the LCM of 2 and 5. We have to find the numbers in between them
2: 1,2
5: 1,5
By looking at the LCM of 2 and 5, we know that 1 is the LCM of 2 and 5.
I think the answer is 10

Find the sum of the arithmetic sequence. 3, 5, 7, 9, ..., 21

Answers

The answer is:

120

Given the arithmetic sequence

3, 5, 7, 9, ..., 21

The first term a = 3 & a common difference d = 5 - 3 = 7 - 5 = ... = 2

If there are n number of terms in the above A.P. then last term l = 21 will be the nth term given as:

l = a + (n - 1)d

21 = 3 +(n − 1)2

n = 10

Hence the sum of given arithmetic progression (A. P.) up to 10 terms is given general formula.

Sn = n/2(a + l)

S10 = 10/2(3 + 21)

= 120

Given: CB bisects ∠ACD and m∠ACB is 30°. Find m∠BCD.

Answers

Answer:

30

Step-by-step explanation:

Answer:

My Answer is 30°. Hopefully this helps.

Step-by-step explanation:

Now This is just a Theory, but if CB Truely is a bisector of ∠ACD. Then shouldn't ∠ACB ≅ ∠BCD?

If you know this answer can you help lol

Answers

24 is all four of the definitions.
It’s A B C and D

Hope this help
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