Ask question

Ask question

All categories

1 year ago

9

A 10-foot ladder is leaning against a wall, making a 65' with the ground.To the nearest whole foot, how far up the wall will the

ladder reach?feetsin AoppositehypotenuseCOS A =adjacenthypotenusetan Aoppositeadjacent56789

1 answer:

Andreas93 [3]1 year ago

6 0

sin = opposite/hypotenuse

sin 65° = x/10 ==> x = 10 * sin 65° = 10 * 0.90631 = 9.06 ft

Answer:

9.06 ft

You might be interested in

Use the elimination method to solve the system of equations. Choose the correct ordered pair.

ki77a [65]

You answer is A. You have to substitute the values of x and y into the equation.

(3*1)= 4-1

4-(2*1)=2

(4,1)
(x,y)

8 0

3 years ago

A chestnut falls out of a tree 45 feet above the ground. Use the vertical motion model, H=-16t^2+vt+s s to find how long it take

valentinak56 [21]

Answer:

1.7 seconds

Step-by-step explanation:

we have

$H=-16t^2+vt+s$

where

v is the initial velocity (in feet per second)

s represents the initial height (in feet)

In this problem we have

$v=0$ ---> because the object is dropped

$s=45\ ft$

substitute

$H=-16t^2+45$

Remember that

When the chestnut hit the ground the value of H is equal to zero

so

For H=0

$-16t^2+45=0$

solve for t

$16t^2=45\\t^2=2.8125\\t=\pm1.7\ sec$

therefore

The solution is t=1.7 sec

7 0

2 years ago

Gala2k [10]

Answer:

(- 2, 4 )

Step-by-step explanation:

Given endpoints (x₁, y₁ ) and (x₂, y₂ ) , then the midpoint is

( $\frac{x_{1}+x_{2} }{2}$ , $\frac{y_{1}+y_{2} }{2}$ )

Here (x₁, y₁ ) = A (4, 6 ) and (x₂, y₂ ) = B (- 8, 2 )

midpoint = ( $\frac{4-8}{2}$ , $\frac{6+2}{2}$ ) = ( $\frac{-4}{2}$ , $\frac{8}{2}$ ) = (- 2, 4 )

6 0

2 years ago

Read 2 more answers

PLEASE HELP!!!! 25 POINTS!!!!

Andrei [34K]

Answer:

0.9562

Step-by-step explanation:

Binomial probability is mathematically expressed as:

$P(X=x)={n\choose x}p^x(1-p)^{n-x}$

Given that p=0.18, n=5 , is calculated as:

$P(X\leq 2)=P(0)+P(1)+P(2)\\\\={5\choose 0}0.18^0(1-0.18)^5+{5\choose 1}0.18^1(1-0.18)^4+{5\choose 2}0.18^2(1-0.18)^3\\\\=0.3707+0.4069+0.1786\\\\=0.9562$

Hence, the probability of no more than 2 successes in 5 trials is 0.9562

4 0

2 years ago

1/2 of 3 + 3/4 of 3 +1/2 of 2=

Vedmedyk [2.9K]

=3/2+ 9/4+ 2/2
=1.5+ 2.25+ 1
=4.75

6 0

3 years ago