All categories

2 years ago

Please I need help it’s an emergency

Mathematics

1 answer:

aev [14]2 years ago

8 0

Answer:

A. Cos θ = 16/42

Step-by-step explanation:

The angle the ladder makes with the floor = θ

Hypotenuse = length of the ladder = 42 m

Adjacent = Distance from the bottom of the ladder to the wall = 16 m

Therefore to find θ, we would apply the trigonometric function, CAH:

Cos θ = adj/hyp

Which is:

Cos θ = 16/42

You might be interested in

Factor 16x4 - 4y2<br><br> A) (x + 4y)(x - 4y)<br> B) 4(2x2 + y)(2x2 - y)

Alex73 [517]

Step-by-step explanation:

$16 {x}^{4} - 4 {y}^{2} \\ {4}^{2} {x}^{4} - {2}^{2} {y}^{2} \\ {4}^{2} {x}^{2} \times {x}^{2} - {2}^{2} {y}^{2} \\ (4 {x}^{2} - 2y)(4 {x}^{2} - 2y)$

6 0

2 years ago

Read 2 more answers

What is 2 ^ 4 in standard form?

spin [16.1K]

6x=10^= (*=0) is the answer

3 0

3 years ago

Help me plz? trapezoids are confusing

elena55 [62]

The area is 28cm.
Hope this answer helps!!!

4 0

3 years ago

Someone help me with this question!

Oksi-84 [34.3K]

The “1/2” caused the parabola to be vertically compressed meaning it got wider.

and the “-2” caused the parabola to move 2 units to the right

Therefore the correct answer should be C.

8 0

2 years ago

A survey was conducted that asked 1004 people how many books they had read in the past year. Results indicated that x overbarequ

melisa1 [442]

Answer:

Step-by-step explanation:

Given that a survey was conducted that asked 1004 people how many books they had read in the past year.

Results are:

x bar =12.5

s = 16.6

n = 1004

Std error of sample = $\frac{s}{\sqrt{n-1} } =\frac{16.6}{\sqrt{1003} }\\=0.524152\\=0.524$

Since population std dev is not known t critical value can be used for confidence interval.

df = 1004-1 =1003

t critical = 1.96

Margin of error $= 1.96(std error) =1.027$

Confidence interval lower bound $= 12.5-1.027 = 11.473$

Upper bound $= 12.5+1.027 = 13.527$

6 0

2 years ago