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2 years ago

2

Mathematics

1 answer:

pentagon [3]2 years ago

3 0

Answer:

7xy^2 - 2xy^2

Step-by-step explanation:

Subtracting 3xy² from 8xy² is 8xy² - 3xy² = 5xy²

And 7xy^2 - 2xy^2= 5xy²

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How many cm are in 6.9km 6.9cm 690,000cm 6,900cm

lisabon 2012 [21]

Answer:

690,000 thanks for asking

6 0

3 years ago

9. A ladder of length 23 feet leans against the side of a building. The angle of elevation of the ladder is 76. Find the distanc

irakobra [83]

<h3>Answer:</h3>

B) 22.32 feet

$\quad\rule{300pt}{1pt}$

<h3>Solution:</h3>

we are given that , a ladder is placed against a side of building , which forms a right angled triangle . We wre given one side of a right angled triangle ( hypotenuse ) as 23 feet and the angle of elevation as 76 ° . We can find the Perpendicular distance from the top of the ladder go to the ground by using the trigonometric identity:

$\qquad\quad\bull ~{\boxed{\bf{ Sin\theta =\dfrac{Perpendicular}{Hypotenuse}}} }~\bull$

Here,

hypotenuse = 23 feet
$\theta$ = 76°
Value of Sin $\theta$ = 0.97
Perpendicular = ?

$\quad\dashrightarrow\quad \sf { sin\theta =\dfrac{P}{H}}$

$\quad\dashrightarrow\quad \sf { sin76° =\dfrac{P}{23}}$

$\quad\dashrightarrow\quad \sf { 0.97=\dfrac{P}{23}}$

$\quad\dashrightarrow\quad \sf {P = 0.97 \times 23 }$

$\quad\dashrightarrow\quad \sf { P = 22.32}$

‎ㅤ‎ㅤ‎ㅤ~Hence, the distance from the top of the ladder to the ground is 22.32 feet !

$\rule{300pt}{2pt}$

4 0

2 years ago

What expressions are equivalent to 4x-8x+12y

kotykmax [81]

I belive it would be 12x + 12y

7 0

3 years ago

Read 2 more answers

I Need Help with my Summer Packet!

yulyashka [42]

Answer:

The angles on the top form 180 degrees, a line. So, 180 = 4x + 72 which gives you x = 27 Angle BFC is 66 degrees, angle CFD is 54 degrees, and angle BFA is 29 degrees. Therefore, C. 27 degrees is not a measure of an angle in the figure

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Decide if the following is a true or false statement - explain how you know

Sophie [7]

Answer:

False

Step-by-step explanation:

The equation equals -1/2 - 4.25 which is -4.75, which is negative.

Hope that helps!

5 0

3 years ago