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Julli [10]
3 years ago
7

Who knows how to do this

Mathematics
1 answer:
Ivan3 years ago
3 0
Area by Heron's formula:
semiperimeter = (15 + 20 + 25)/2 = 60/2 = 30 cm

Area = \sqrt{30(30-15)(30-20)(30-25)}= \sqrt{30 \cdot5\cdot10\cdot15}= \\\\ {} \ \ \ \ \ \ =\sqrt{22500} =150 \ cm^2

The formula of the area of a triangle: Area = 1/2 * base * height
1/2 * 25 * height = 150
12.5 * height = 150
height = 150/12.5
height = 12 cm
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What is the factored form of 5x+x^2=0
Colt1911 [192]
5x+x^2=0\\ \\x(5+x)=0\\ \\x=0 \ \vee \ 5+x=0 \\\\ x=0 \ \vee \ x=-5


3 0
3 years ago
Which BEST describes the construction of a triangle if given one side length of 10 cm and one right angle?
Colt1911 [192]
Statements that best describe the triangle are the following:
1. It is a right triangle, therefore one angle is equivalent to 90°.
2. We can solve for the measurement of the other leg using the Pythagorean theorem c²=a²+b².
3. We can use SOH CAH TOA theorem in solving the other unknowns.
4 0
3 years ago
At a soccer match, for every goal team A scored, team B scored 3 goals. The ratio of the number of goals scored by team A to the
anastassius [24]

Answer:

1 to 3

Step-by-step explanation:

For every goal team A scored, team B scored 3 goals.

So when team A scores 1 goal,

Team B scores 3 goals.

1 goal, 3 goals

1:3, or 1 to 3

4 0
3 years ago
Read 2 more answers
Classify the object with the given side lengths as acute, obtuse, right, or not a triangle.
iren [92.7K]

Answer:

We have to first see that the given lengths makes a triangle or not by using a+b > c in which a,b and c are

length of sides of a triangle lets check out

16 + 21 = 37 > 28

21 + 28 = 49 > 16

16+ 28 = 44 > 21

As because the statement fits correct in the lengths given so its a triangle

So we can say that the triangle is scalene by means of measurements

but cant be a right angle as by taking the pythagorean triplet

= a^2 + b ^ 2 = c^2

lets see if a=16, b = 21 and c = 28

So a^2 + b^2

= 256 + 441

= 697

but c^2

= 28^2 = 784

As 441 =/= 784

So The triangle lengths cant be a right angled triangle

So 1/2 of possibility is the traingle acute and 1/2 of the possibilty that the triangle is obtuse

Now you can find the correct triangle on the basis of acute or obtuse angle by drawing with given length of sides of triangle

Hope it helps

7 0
3 years ago
Are these two expressions equivalent?<br> 6 + 3 and 3 + 6
labwork [276]

Answer: Yes its equivalent

Step-by-step explanation:

6 + 3 =9 and 3 + 6= 9

9 = 9

You should know this smh

6 0
3 years ago
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