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
Debora [2.8K]
3 years ago
15

I need help! This is Geometry lesson 8-3 ! Please help me asap!!!!

Mathematics
1 answer:
gulaghasi [49]3 years ago
8 0
If you learned about the 45-45-90 triangle (which is isosceles), then the faster way is to know that the hypotenuse (side opposite of right angle) is √2 times either one of the sides.
3√2 = (√2)x
x = 3

But if you didn't learn the 45-45-90 triangle yet, that's ok.
Recall the trigonometric ratios for right triangles: sine (sin), cosine (cos), tangent (tan).

If your angle is x, then
sin(x) = opposite side / hypotenuse
cos(x) = adjacent side / hypotenuse
tan(x) = opposite side / adjacent side

Remember the hypotenuse is the side opposite and across from the right angle (3√2 in this case).
An acronym to remember this is SohCahToa.

In this problem, the angle given is 45°, and you need to find the length of the adjacent side x. The hypotenuse is also given as 3√2.

Because we have the adjacent side and the hypotenuse, we use cosine to relate those two sides
cos(45°) = x / (3√2)
x = (3√2)cos45°
If you plug this into your calculator (in degree mode), then
x = 3

You might be interested in
If i have $2.69 how much more money do i need to have $7.99 show work
polet [3.4K]

Answer:

you will need $5.50 more to have $7.99

Step-by-step explanation:

7.99-2.69=5.50

4 0
3 years ago
Read 2 more answers
Help Pls and Fast. correct answer gets brainliest<br> −8⋅f(0)+4⋅g(−8)
masha68 [24]

Answer:

-32

Step-by-step explanation:

Khanacademy

5 0
2 years ago
Help FAST PLEASE GIVING 20 points to the right answer !!!
Korolek [52]
A bc to find the ratio u have to divide them for how much 1 would be
6 0
3 years ago
Read 2 more answers
In response to the increasing weight of airline passengers, the Federal Aviation Administration in 2003 told airlines to assume
schepotkina [342]

Answer: 0.0016

Step-by-step explanation:

Given the following :

Population mean(m) = 196

Population Standard deviation (sd) = 32

Number of sample (n) = 18

Sample mean (x) = Total weight of sample / number of samples = 3928 / 18 = 218.2

Obtaining the test statistic (z) :

Z = [(x - m) / (sd/√n)]

Z = [(218.2 - 196) / (32/√18)]

Z = [(22.2 / 7.5424723)]

Z = 2.943

Hence,

P(Z > 2.94) = 1 - P(Z < 2.94)

= 1 - 0.9984

= 0.0016

4 0
3 years ago
75 POINTS HELP PLEASE
Lady bird [3.3K]
The correct answer is C) (5×10⁴)(1×10²)

Explanation:
The number of trees can be calculated by the formula:
trees = density × area

Consider that the problem says that the researcher makes an approximation, and the answers have numbers written in scientific notation.

The density is 86 trees/km², 
which can be rounded to 100 trees/km² 
and written as <span>1×10².
Therefore, density = </span>1×10² trees/km²

The area of a square can be calculated by the formula:
A = s²
   = 220² 
   = 48400 km²
which can be roundend to 50000
and written as <span>5×10⁴
Therefore, area = </span>5×10⁴ km²

Now, we can substitute in the original formula:
trees = (1×10²)(5×10⁴)
3 0
3 years ago
Read 2 more answers
Other questions:
  • Page's front door measures 84 inches by 54 inches. What is the area of the door? (ONLY IF YOU KNOW)
    6·1 answer
  • In the expression 4×(2+6), how does having the 4× in front of the parentheses affect the overall value of the expresssion
    7·2 answers
  • What is the integers from 25 to 41
    7·2 answers
  • P(x) with rational coefficients has the given roots (i and 7 + 8i) Find two additional roots?
    8·1 answer
  • Which shows 9.635 written in expanded form, using powers of ten
    15·1 answer
  • Enlarge Image
    13·1 answer
  • Help and i will give brainiest if you answer them all if random will report
    6·2 answers
  • 59-(2c+3)=4(c+7)+c.
    5·2 answers
  • What is the place value of the 6 in the number 34,260,1597
    13·2 answers
  • Please help! I'll give anyone who helps 10 points.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!