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UNO [17]
3 years ago
14

Find the are and perimeter of the triangle (6cm, 3cm, and 9cm)

Mathematics
1 answer:
Gennadij [26K]3 years ago
8 0

9+3+6=18.00000000000000000

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What is an algebraic equation for four times a number y is sixteen
Len [333]

4y=16

y is the variable. If you were to solve the equation you would write the equation as 4(4)=16.

3 0
4 years ago
I need the answer so please help it is worth 88 points
yulyashka [42]

Answer:

24

Step-by-step explanation:

If she did all 3of them today then you subtract a day from each one then it would look like this

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4 0
3 years ago
Determine the solution set of (2x - 5)2 = 11.
zhenek [66]
I think what you meant was

(2x - 5)² = 11 -- (1)

Square root both sides of (1), i.e.

√(2x - 5)² = ± √11 -- (2)

From (2), we have

2x - 5 = ± √11 -- (3)

By adding 5 to both sides in (3), we have

2x = 5 ± √11 -- (4)

Divide both sides of (4) by 2, and we obtain

x = (5 ± √11)/2 -- (5)

From (5), the solution set of (1) is

x = (5 + √11)/2, (5 - √11)/2 ...Ans.
8 0
3 years ago
Read 2 more answers
3 over 4 + 1 over 8
Dmitry [639]

Answer:

7/8

Step-by-step explanation:

Start by finding a common denominator. In this case you can turn the 4 into an 8 by multiplying by 2 but you have to do the same to the 3

2(3/4)= 6/8

Step 2: Add 6/8 + 1/8

6/8+1/8= 7/8

3 0
3 years ago
The teacher kept track of how long it took students to finish a test. After 20 minutes, 3 students had finished the test.
spin [16.1K]
Well I would say 11 kids after 70 minutes
5 0
3 years ago
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