1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anna [14]
4 years ago
9

Sally has Christmas lights the roof is 16 feet high the ladder is 20 ft long how far away is letter from wall

Mathematics
1 answer:
lesantik [10]4 years ago
4 0
It should be 12 ft away from the wall. Not 4 ft. You do not just subtract the difference because as you pull it away from the wall, the ladder is mostly moving horizontally with only a small vertical change.

You can use Pythagorean Theorem to find the answer. Think of the ladder as the hypotenuse of a right triangle with the wall and the ground as the legs.

a^2 + b^2 = c^2

16^2 + b^2 = 20^2

b^2 = 20^2 - 16^2

b^2 = 144

b = 12 ft






You might be interested in
Juanita Domingo's parents want to establish a college trust for her. They want to make 16 quarterly withdrawals of $2000, with t
kotegsom [21]

Answer:

The amount to be deposited now to provide for this trust is $119,392.16.

Step-by-step explanation:

This problem is based on ordinary annuity.

An ordinary annuity is a sequence of fixed payments made, every consecutive period, over a fixed interval.

The formula to compute ordinary annuity is:

OA=P[\frac{q^{n}-1}{q^{n}(q-1)}]

Here <em>qⁿ </em>is:

q^{n}=1+\frac{r}{Number\ of\ periods}=1+\frac{0.067}{4}=1.01675

Compute the ordinary annuity as follows:

OA=P[\frac{q^{n}-1}{q^{n}(q-1)}]=2000\times\frac{(1.01675)^{16}-1}{(1.01675)^{16}[1.01675-1]}=2000\times\frac{0.30445}{0.0051}=119392.16

Thus, the amount to be deposited now to provide for this trust is $119,392.16.

4 0
3 years ago
Help with picture ??
9966 [12]

Answer:

b,f is right

Step-by-step explanation:

4 0
3 years ago
Why the following triangles are congruent!
dimaraw [331]

Answer:

Because the sides BO and MA are marked with one line through the middle, which means those sides are congruent, angle A and Angle O are marked with one line, the angles are congruent, and angles W and N are marked with two lines, which means they are congruent. Therefore the triangles are congruent

7 0
3 years ago
Which constants can be multiplied by the equations so one variable will be eliminated when the systems are added together?
nordsb [41]
The first to solve x, because it eliminates y. Third one to solve y, because it eliminates x.
4 0
3 years ago
Two factors of 30 add up to 9
Alinara [238K]
 6x5=30
3x10=30
6+3=9
Hope it helps
6 0
4 years ago
Read 2 more answers
Other questions:
  • Help please with b. and d.
    14·1 answer
  • PLEASE HELPPP<br> what is the measure of angle 3 ?<br> A.25<br> B.35<br> C.70<br> D.85
    8·1 answer
  • a person who weighs 120 lb on Earth would weigh 45 1/5 pounds on Mars set up a proportion to determine how much a 90 pound perso
    7·1 answer
  • Answers pls..i wanna learn this urgently.. plz. tnxs alot
    10·1 answer
  • Someone answer this please
    13·2 answers
  • What are the respective values of x, y, and z for parallelogram ABCD?
    12·2 answers
  • At a camp, kids can choose swimming, art, or music.
    11·1 answer
  • PLEASE HELP MEEEEEEEEEEEEEEEEEEEEEE
    9·2 answers
  • LO bisects &amp;NLM, LM= 22, NO = 6, and LN= 14. What is the approximate value of x?
    10·1 answer
  • Point Q with coordinates (4, –7) is rotated 270° clockwise about (5, 1) . What are the coordinates of its image?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!