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
geniusboy [140]
4 years ago
10

The photo is attached

Mathematics
1 answer:
aleksley [76]4 years ago
7 0

D

using the double - angle identity

cos (2A) = cos² A - sin² A = 2cos² A - 1 = 1 - 2sin² A

the right side = 1 - 2sin² (112.5° ) with A = 22.5°

hence 2A = 2 × 22.5° = 45°

thus cos 45° = 1 - 2sin² ( 22.5°)


You might be interested in
What is the area of the given compound shape?<br><br>a) 69.8cm^2<br>b) 39.8cm^2<br>c) 49.6cm^2​
faust18 [17]

Answer:

39.8 cm^2

Step-by-step explanation:

area of triangle

base = 5 cm

height = 12 cm

are of triangle = base *height / 2

=5*12/2

=60/2

30 cm^2

area of semi circle

diamtere = 5

radius = diameter/2

=5/2

=2.5

area of semi circle = πr^2/2

=3.14*2.5^2/2

=19.625/2

=9.8125 cm^2

are of the figure = are of triangle + area of semicircle

=30 + 9.8125 cm^2

=39.8125 cm^2

=39.8 cm^2   (after converting to the nearest tenth)

7 0
3 years ago
The parallelogram shown below has an area of 35 units^2 2 squared. Find the missing height. h =h=h, equals units
Anit [1.1K]

Answer:

h = 5 units

Step-by-step explanation:

Given that,

The area of the parallelogram, A = 35 unit²

In the attached figure, we can see that the base is 7 unit.

We know that,

Area of a parallelogram, A = b × h

So,

h=\dfrac{A}{b}\\\\h=\dfrac{35}{7}\\\\h=5\ units

So, the value of h is equal to 5 units.

4 0
3 years ago
Is my answer correct?
scZoUnD [109]

Answer:

yes $56 is correct

Step-by-step explanation:

The 3 part of the ratio relates to $42 , then

$42 ÷ 3 = $14 ← value of 1 part of the ratio , then

4 parts = 4 × $14 = $56

5 0
3 years ago
Find the missing angle *
madreJ [45]

Answer:

53°

Step-by-step explanation:

b+37°=90°(being sum of angles of right angle)

or,b=90°-37°

or,b=53°

7 0
4 years ago
Yesterday, Jack drove 44 miles. He used 1 1/3 gallons of gasoline. What is the unit rate for miles per​ gallon?
just olya [345]

Answer:

33 miles per gallon

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Part C
    14·1 answer
  • (t + 4)(t + 7) = 54<br> Find the answer using the zero property
    14·1 answer
  • Simplify: -3(m – 2) – 7m <br><br> A. -10m + 6 <br> B. -4m + 6 <br> C. 4m – 6 <br> D. 10m + 6
    5·2 answers
  • The model represents x2 – 9x + 14. Which is a factor of x2 – 9x + 14? x – 9 x – 2 x + 5 x + 7
    8·2 answers
  • Identify the rule for each pattern.
    5·1 answer
  • A shipping container in the shape of a rectangular prism is 60 feet long, 45 feet wide, and 14 feet tall. What is the volume of
    14·1 answer
  • A marching band has 169 members that will March in a square formation. How many band members should be in each row
    15·1 answer
  • Ms. Palmer is buying pencils and erasers. The pencils come in packs of 8. The erasers come in packs of 12. Ms. Palmer wants to h
    12·1 answer
  • How do I solve X+5=54
    12·2 answers
  • Brooke bought 6 bags of powdered sugar. She got a total of 4 2/3 cups of sugar. How many cups of sugar were in each bag
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!