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bearhunter [10]
3 years ago
6

Please answer! I need help

Mathematics
1 answer:
Nikitich [7]3 years ago
7 0

Answer:

1. a. 25 in²

2. NO. The side lengths don't form a triangle, so cannot form a right triangle.

3. 17

4. 9

Step-by-step explanation:

These are exercises in the application of the Pythagorean theorem, which tells you that for a right triangle, the square of the hypotenuse is the sum of the squares of the other two sides.

In every case, you are given two sides and asked to find the third. Based on the given sides, you need to determine whether you're finding a sum (the hypotenuse) or a difference (one leg).

Since the theorem gives the relation between the squares, you need to find the square root of the sum or difference in order to find the actual length.

_____

In the first problem, the squares are shown as actual squares, the area of which is equal to the square of the side length. The Pythagorean theorem tells you the larger square has an area that is the sum of the areas of the smaller squares.

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Solve the system using any method.<br> x= - 4y+7<br> -2y+3x=9
Arte-miy333 [17]

The solution to the given system of equation is (25/7, 6/7)

<h3>System of equation</h3>

Given the system of equation expressed as:

x= - 4y+7 ........... 1

-2y+3x=9 ...........2

Substitute the equation 1 into 2 into have:

-2y + 3(-4y+7) = 9

-2y + 3(-4y) + 3(7) = 9

-2y - 12y + 21 = 9

Collect the like terms

-14y = 9- 21

-14y = -12

y = 6/7

Substitute y = 6/7 into equation 1;

x =-4y + 7

x = -4(6/7) + 7

x= -24/7 + 7

x = -24+49/7

x = 25/7

Hence the solution to the given system of equation is (25/7, 6/7)

Learn more on system of equation here; brainly.com/question/14323743

#SPJ1

6 0
2 years ago
In ΔABC, m∠ACB = 90°, CD ⊥ AB and m∠ACD = 45°. Find: CD, if BC = 3 in
IRISSAK [1]
We can find m∠BCD like follows: m∠BCD=90°-45°=45<span>°
Now, m</span><span>∠DBC= 180°-(90°+45°)=45°

Remember that </span>sin \alpha = \frac{opposite leg}{hypotenuse}, so oppositeleg=(hypotenuse)(sin \alpha )

We know that hypotenuse= BC= 3in and \alpha=∠DBC)=45°, so replacing the values we get:
CD=3sin(45)=2.12

We can conclude that the segment CD is 2.12 in
4 0
3 years ago
Read 2 more answers
The angles below are supplementary. What is the value of X?
zubka84 [21]
So you make your equation 4x+20+40=180.
Add like terms and get 4x+60=180.
Subtract 60 from both sides, get 4x=120.
Divide boths sides by 4, get your answer of x=30.
Hope this helps
7 0
3 years ago
Read 2 more answers
An arithmetic sequence a starts 2, 5, . .
Whitepunk [10]

Answer:

Tn = 3n-1

T6 = 17

Step-by-step explanation:

Given the arithmetic sequence;

2, 5...

first term a = 2

Common difference d = 5-2 = 3

nth term of an AP is expressed as Tn = a + (n-1)d

Tn = 2 + (n-1)(3)

Tn = 2 + 3n-3

Tn = 3n-1

Get the 6th term

T6 = 3(6)-1

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T6 = 17

Hence the 6th term of the sequence is 17

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Which expression represents the series ?
Bas_tet [7]
Is this for a quiz? It looks familiar
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