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mina [271]
3 years ago
7

Determine whether each of the following triangles is a right-angled triangle

Mathematics
1 answer:
Fantom [35]3 years ago
4 0

Answer:

Yes

Step-by-step explanation:

To determine if this is a right triangle, use the pythagorean theorem and see if a^2 + b^2 is equal to c^2.

a^2 + b^2 = c^2

12^2 + 16^2 = 20^2

Evaluate the exponents.

144 + 256 = 400

Add them together.

400 = 400

Since a^2 and b^2 add up to equal c^2, this is a right triangle.

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Find the difference. 4/9-1/3
Iteru [2.4K]
1/9

Find the common denominator, 1/3 can be multiplied to get to ninths. 1/3 is equivalent to 3/9, and so 4/9 minus 3/9 is 1/9.
7 0
3 years ago
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Which place is the 7 in? 502.78 tens tenths ones hundredths
Marina CMI [18]

Answer:

tenths

Step-by-step explanation:

Suppose a number is given in the form ABC.ZYX

The place values would be:

C is ones

B is tens

A is hundreds

Z is tenths

Y is hundredths

X is thousandths

Looking at the number 502.78, we see that "7" is the first right place after decimal, which is same as "Z", which is tenths.

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4 0
3 years ago
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What is x-7; if x=23
Leona [35]
X = 23

x - 7

(23) - 7 = 16

16 is your answer

hope this helps
7 0
3 years ago
B. x + 5y = 8<br>-x + 2y = -1​
igomit [66]

Answer:

(3, 1)

Step-by-step explanation:

x+5y=8

-x+2y=-1

-------------

7y=7

y=7/7=1

x+5(1)=8

x+5=8

x=8-5=3

Answer: x=3, y=1.

8 0
3 years ago
Which set of numbers CANNOT represent the lengths of the sides of a triangle?
posledela

Answer:

C

Step-by-step explanation:

The general rule is that any 2 must exceed the third in order for a triangle to form. If any one is an exception, it won't work.

A will form a triangle. Any 2 exceeds the third.

B also forms a triangle. Same rule.

C  does not work. 7 + 11 = 18 which is the value of the third leg.

D words Any two exceeds the 3rd.

4 0
3 years ago
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