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
kykrilka [37]
3 years ago
15

Cos(A) = ? 13/5 12/5 12/13 5/13

Mathematics
1 answer:
ollegr [7]3 years ago
6 0

Answer:

cosA = \frac{5}{13}

Step-by-step explanation:

cosA = \frac{adjacent}{hypotenuse} = \frac{AC}{AB} = \frac{5}{13}

You might be interested in
Solving Linear Equations - Quiz-Level H
olga2289 [7]

Answer:

all real numbers are solutions

Step-by-step explanation:

4 0
3 years ago
A bank assigns random 4-digit numbers for atm access codes. in each code, no digit is repeated. use combinations to find the num
kirill [66]
The number of ways to select 4 digits from 10  digits is
₁₀C₄ = 10!/(4!*6!) 
       = (10*9*8*7*6!)/(4*3*2*1*6!)
       = (10*9*8*7)/(4*3*2)
       = 210 

If order is not important, the number of arrangements of 6,7,8,9 in any order is
4! = 4*3*2*1
    = 24
The probability that these 4 digits are assigned is
24/210 = 0.1143

7 0
4 years ago
Colin and Dan win some money and share it in the ratio 4:5. Colin gets £52. How much did they win in total?
andrey2020 [161]

Answer:

$65

Step-by-step explanation:

Collin gets 4x dollars which equals 52, so 4x = 52

Dan gets 5x dollars which equals y (the answer). solve for x = 13. 5 • 13 = 65.

8 0
4 years ago
Solve the formula for m.<br> e = MC^2<br> M=
azamat

Answer:

M  = \frac{e}{C^2 }

Step-by-step explanation:

e=MC^2  \\  \frac{e}{C^2 }  = M \\ \huge \red{ \boxed{M  = \frac{e}{C^2 } }}

8 0
3 years ago
Consider the half of the sphere of radius 2 centered at the origin which lies above the xy-plane (a hemisphere). Suppose the den
Harlamova29_29 [7]

Answer:

25.133 units

Step-by-step explanation:

Since the density ρ = r, our mass is

m =  ∫∫∫r³sinθdΦdrdθ. We integrate from θ = 0 to π (since it is a hemisphere), Φ = 0 to 2π and r = 0 to 2  and  the maximum values of r = 2 in those directions. So

m =∫∫[∫r³sinθdΦ]drdθ      

m = ∫[∫2πr³sinθdθ]dr     ∫dФ = 2π

m = ∫2πr³∫sinθdθ]dr

m = 2π∫r³dr    ∫sinθdθ = 1

m = 2π × 4     ∫r³dr = 4

m = 8π units

m = 25.133 units

5 0
3 years ago
Other questions:
  • What effect does increasing the sample size have on a distribution of sample means?
    7·1 answer
  • Last year's litter consisted of 12 kittens, and this year's litter is 3/4 as large. If 2/3 of this new litter's cats are brown,
    10·1 answer
  • Bonnie is four years older than Clyde.
    15·1 answer
  • Please help please<br> A.68<br> B.39<br> C.73<br> D.107
    6·1 answer
  • Given the figure below, prove that it is a parallelogram.
    10·1 answer
  • At the school carnival, Jade has a game booth with a spinner. The banner at her booth reads "20% chance of spinning red and winn
    11·2 answers
  • What are the zeros of the quadratic expression 3x2 - 6x - 24?
    9·1 answer
  • Robin works as a customer service representative. She knows that the
    8·1 answer
  • You estimate that a baby pig weighs 20 pounds. The actual weight of the baby pig is 16 pounds. Find the percent error.
    8·1 answer
  • Find the median of the following data set.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!