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otez555 [7]
2 years ago
6

A triangle is enlarged by a factor of 3. The perimeter of the new triangle is 36 feet. What could be the lengths of the sides of

the original triangle?
3 feet, 4 feet, and 5 feet
1.5 feet, 1.25 foot, and 1.25 foot
2 feet, 0.5 feet, and 1.8 feet
4 feet, 4 feet, and 3 feet
Mathematics
1 answer:
Burka [1]2 years ago
4 0
3 feet 4 feet 5 feet is the answer. 3(3 + 4 + 5)=36
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Solve for the brainlist
Sergio039 [100]

Answer:

x = 10.0

Step-by-step explanation:

Using the geometric mean formula:

       x                projection

-----------------  =  ---------------

entire base              x

Here, the projection is 5 and the entire base is (20 + 5). So:

       x                5

------------  =  ------------

      25              x

Cross multiply:

x² = 25 (5)

x² = 100

√x² = √100

x = 10

3 0
3 years ago
7. A triangle has sides with lengths of 10 metres,
Kay [80]

Answer:

It is not a right triangle.

Step-by-step explanation:

We can prove this by Pythagorean theorem because it represents to a right triangle.

Pythagorean theorem:

a² + b² = c²

Now substitute the values.

Note: the longest side will represent c

So,

a = 10 m

b = 16 m

c = 20 m

10² + 16² = 20²

The objective here is to make them equal.

100 + 256 = 400

356 ≠ 400

They are not equal so it is not considered a right triangle.

7 0
3 years ago
A hiker walks at a speed of 3 2/5 km per hour. how many km will he walk in 3/4 of an hour
Art [367]

Answer:

2.55

Step-by-step explanation:

6 0
3 years ago
$600 invested with compound interest at a rate of 4% per year for 10 years <br> formula:M= P(1+i)^n
makkiz [27]
Answer: M = 2100$

Explanation:

M = P(1 + I)^n

P = 600$, I = 4% = 0.04, n = 10

=> M = 600(1 + 0.04)^10
M = 600(1.04)^10
M = 600(3.5)
M = 2100$
8 0
2 years ago
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xxMikexx [17]

Answer:

$13.12 per hour

Step-by-step explanation:

Take the total pay and divide by the number of hours

$282.08/21.5 hours

$13.12 per hour

8 0
2 years ago
Read 2 more answers
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