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den301095 [7]
3 years ago
7

Find the area of this triangle..

Mathematics
1 answer:
Phoenix [80]3 years ago
3 0

Answer:

Step-by-step explanation:

Use the Pythagorean theorem to find the altitude.

h^2 = 9^2 - 6.4^2

h^2 = 40.04

h = 6.328

area = base * height/2

area = (2 * 6.4) * 6.328/2

area = 40.5 square units

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A.16cm<br> b. 16 root 2cm<br> c. 8 root 2cm<br> d. 8cm
Stolb23 [73]

Answer:

C

Step-by-step explanation:

Mark as Brainliest :)

7 0
3 years ago
Find the solution to the system of equations. You can use the interactive graph below to find the solution. { y = x − 4 y = 4 x
kumpel [21]

ANSWER

x=-2,y=-6

EXPLANATION

First equation:

y = x - 4

Second equation:

y = 4x + 2

Let us equate the two equations and solve for x.

This implies that;

4x + 2 = x - 4

Group similar terms to obtain:

4x - x =  - 4 - 2

Simplify:

3x =  - 6

Divide both sides by 3

x =  - 2

Put x=-2 into any of the equations.

I will put x=-2 into the first equation:

y =  - 2 - 4

This implies that,

y =  - 6

7 0
3 years ago
Read 2 more answers
Which ordered pair is a solution of the equation 2x-3y=19
goldenfox [79]
D because 5 times 2 is 10 and - cuts off - so -3 times -3 would be 9 so 10+9 is 19 :)
7 0
2 years ago
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Find the lengths of the missing side . Simplify all radicals !!!<br> help mee!!!!!!
larisa86 [58]

Answer:

e = 13\sqrt{2}

f = 13\sqrt{2}

Step-by-step explanation:

The ∆ given is an isosceles ∆ with a right angle measuring 90°, and two congruent angles measuring 45° each.

Using trigonometric ratio formula, we can find the lengths of the missing side as shown below:

Finding e:

sin(\theta) = \frac{opp}{hyp}

sin(\theta) = sin(45) = \frac{\sqrt{2}}{2}

hyp = 26

opp = e = ?

Plug in the values into the formula

\frac{\sqrt{2}}{2} = \frac{e}{26}

Multiply both sides by 26

\frac{\sqrt{2}}{2}*26 = \frac{e}{26}*26

\frac{\sqrt{2}}{2}*26 = e

\frac{\sqrt{2}}{1}*13 = e

13\sqrt{2} = e

e = 13\sqrt{2}

Since side e is of the same length with side f, therefore, the length of side f = 13\sqrt{2}

3 0
3 years ago
Write the equation of the line that passes through (2,4) and has a slope of -1 in point-slope from
lisabon 2012 [21]
The answer is D 
Following the point - slope form : y - y1 = m ( x - x1 ) 
6 0
3 years ago
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