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3 years ago

PLEASE HELP FOR BRAINLIEST! :)

Mathematics

1 answer:

elena-s [515]3 years ago

8 0

Give that man a brainliest

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Please help I keep getting this Wrong

Airida [17]

Answer:

Step-by-step explanation:

if EF(part) = 18 and DF(the whole line) = 61

61-18 is 43. 43=DE

Please give brainliest thanks

4 0

3 years ago

Bosco stands on a level ground 100m away from the foot of a vertical pole.He observes the amngle of elevation of the top of the

guapka [62]

Answer:

286.87m (not sure)

Step-by-step explanation:

since we are looking for the hypotenuse we are to use SIN

sin 20.4=100/x

sin 20.4= 0.3486

so 0.3486x =100

divide both sides by 0.3486

so 100/0.3486

= 286.87m approximately

6 0

3 years ago

In the expression -5g12 which part is the base?

Montano1993 [528]

-5 is the base of -5g in this expression

5 0

3 years ago

Find the inverse of the matrix <img src="https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D9%26-2%5C%5C-10%269%5C%5C

valentinak56 [21]

Answer:

The answer is (b)

Step-by-step explanation:

* Lets check how to find the inverse of the matrix,

its dimensions is 2 × 2

* To know if the inverse of the matrix exist find the determinant

- If its not equal 0, then it exist

* How to find the determinant

- It is the difference between the multiplication of

the diagonals of the matrix

Ex: If the matrix is $\left[\begin{array}{ccc}a&b\\c&d\end{array}\right]$

its determinant = ad - bc

- After that lets swap the positions of a and d, put negatives

in front of b and c, and divide everything by the determinant

- The inverse will be $\left[\begin{array}{ccc}\frac{d}{ad-bc} &\frac{-b}{ad-bc}\\\frac{-c}{ad-bc} &\frac{a}{ad-bc}\end{array}\right]$

* Lets do that with our problem

∵ The determinant = (9 × 9) - (-2 × -10) = 81 - 20 = 61

- The determinant ≠ 0, then the inverse is exist

∴ The inverse is $\frac{1}{61}\left[\begin{array}{ccc}9&2\\10&9\end{array}\right]$ =

$\left[\begin{array}{ccc}\frac{9}{61}&\frac{2}{61}\\\frac{10}{61} &\frac{9}{61}\end{array}\right]$

* The answer is (b)

7 0

3 years ago

What is the difference (how far apart on a number line are the solutions) between the sum of roots versus the product of the roo

pychu [463]

Answer:

Step-by-step explanation:

(x - 5)(x + 2) = 0

x = 5 & -2

Now,

given

r > s

r = 5, s = -2

Now,

=> r - s

=> 5 - (-2)

=> 5 + 2

=> 7

4 0

2 years ago

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