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3 years ago

LOTS OF POINTS!!! Please show your work to answer 1 and 2.

Mathematics

1 answer:

maw [93]3 years ago

4 0

1. BXADC ( cuz BXC>DXC) Im not sure how to explain it because it just popped out in my head

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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

3 years ago

Round 7.224 is to the nearest hundredth.

VMariaS [17]

Answer:

7.22 because the number 4 is not larger than 5 5 so it does not go up.

7 0

3 years ago

Read 2 more answers

Need help with this problem

bearhunter [10]

Answer:

C. -1/2

Step-by-step explanation:

well the formula for slope is m=(y2-y1/x2-x1). y2 = -5 y1= 3 x2 = 2 x1 = -14. put that all together to get -5-3/2-(-14). well -5 - 3 = -8. the second one is like a multiplication problem so a negative minus a negative is a positive. which give u 2 + 14 = 16. so you get the fraction -8/16 both are divisible by 8 so divide the equation by 8 and you get -1/2.

4 0

3 years ago

A circular jogging track forms the edge of a circular lake that has a diameter of 2 miles. Johanna walked once around the track

Anna [14]

Answer:

C. 2.0 < t < 2.5

Step-by-step explanation:

Diameter of track (D) = 2 miles, Average rate (A) = 3 miles per hour

A = distance/ time

time (t) = distance/A

distance around the track (circumference) = πD = 3.142 × 2 miles = 6.284 miles

t = 6.284miles/3miles/hour = 2.1 hour

Therefore, 2.0 < t < 2.5

8 0

3 years ago

12, Is this a discrete?

a_sh-v [17]

Yes it is a discrete

3 0

4 years ago