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frozen [14]
3 years ago
14

Which of these four sets of side lengths will form a right triangle?

Mathematics
1 answer:
N76 [4]3 years ago
3 0
They must conform with  Pythagoras theorem

It is set 4 because

(sqrt 2)^2 + (sqrt 7)^2  = 3^2
     2 + 7 = 9
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Anyone know I’m having a hard time!
Rudiy27

Answer:

x = \sqrt{30}

Step-by-step explanation:

Applying altitude- on - hypotenuse theorem.

(leg of large Δ )² = ( part of hypotenuse below it ) × ( whole hypotenuse )

x² = 3 × (3 + 7) = 3 × 10 = 30 ( take square root of both sides )

x = \sqrt{30}

5 0
3 years ago
Find the length of AC to the nearest tenth of a meter. 6pts
joja [24]
Ac is 7 because it is a right angle

4 0
3 years ago
I WILL MAKE YOU BRAINIST
nekit [7.7K]

Answer:

234

Step-by-step explanation:

We want to find the summation from n = 2 to n = 10 of the equation -4 + 5n.

We can use the summation formula:

S=\frac{(a_1+a_n)*n}{2}, where a1 is the first term, a_n is the last term, and n is the number of terms

Here, we can say the first term occurs when n = 2:

-4 + 5n

-4 + 5 * 2 = -4 + 10 = 6

The last term will be when n = 10:

-4 + 5n

-4 + 5 * 10 = -4 + 50 = 46

The number of terms is just 10 - 2 + 1 = 9 terms.

Substitute these in:

S=\frac{(a_1+a_n)*n}{2}

S=\frac{(6+46)*9}{2}=\frac{468}{2} =234

Thus, the answer is 234.

8 0
3 years ago
Solve for X<br> 121 +7&lt; -11<br> OR 5x- 8 &gt; 40
Trava [24]

Answer:

x > 48/5 the first one is false

3 0
2 years ago
Consider triangle DEF. The legs have a length of 36 units each. Triangle D E F is shown. Angle D F E is 90 degrees and angles F
devlian [24]

Answer:

16

Step-by-step explanation:

it just is

4 1
3 years ago
Read 2 more answers
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