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
Mekhanik [1.2K]
3 years ago
10

Hey i need help solving these and not just the answer i really would like to know how

Mathematics
1 answer:
Mars2501 [29]3 years ago
3 0
Hello,

1)
Let's put some name of vertex:
A with angle A=45°
B with angle B=90°
C The 3 vertex of the triangle of left.
AC=9 , y=AB=BC
With Pythagore, we can say: y²+y²=9²==>2y²=81===>y=9/√2=9√2/2

The other triangle is BDC: cos(60°)=x/y==>x=y*1/2=9√2/4

2)
Let's give some names:

A with angle A=60°
B with angle B=90
C the 3th vertex of the  left triangle.
AB=10, BC=y
tan 60°=y/10=sin(60°)/cos(60°)=(√3/2)/(1/2)=√3==>y=10√3

D is the 3 th vertex of the  right  triangle.
We use Pythagore: y²+y²=x²
x²=2*(10√3)²===>x=10*√6

You might be interested in
Elise has a budget of thirty dollars to spend on back-to-school clothes. she finds some shirts she likes that cost fifteen dolla
Alexandra [31]
X is equal to 2 because thirty divide fifteen is two
5 0
3 years ago
Is a theater there are 28 rows in each row there are 32 seats, each ticket coasts £19.75
DedPeter [7]

Answer:

£17696

Step-by-step explanation:

28*32= 896

896*19.75= 17696

7 0
3 years ago
Read 2 more answers
Lacie wants to paint her bedroom walls. She gas to cover 1,165.5 square feet. About how many gallons of paint will she need? Gal
DanielleElmas [232]

Answer:

1. 4.66 gallons 2. 2.33 gallons 3. 1.55 gallons

Step-by-step explanation:

1. If her gallons cover is 250 square feet, the number of gallons of paint Lacie would need to cover 1,165.5 square feet of bedroom walls is

1,165.5/250 = 4.66 gallons

2. If her gallons cover is 500 square feet, the number of gallons of paint Lacie would need to cover 1,165.5 square feet of bedroom walls is

1,165.5/500 = 2.33 gallons

3. If her gallons cover is 750 square feet, the number of gallons of paint Lacie would need to cover 1,165.5 square feet of bedroom walls is

1,165.5/750 = 1.55 gallons

4 0
3 years ago
A girl 1.54m girl, is 30m away from tower whose height is 53.5m. determine the angel of angle of elevation from her eye to the t
steposvetlana [31]

Answer:

reference attached

Step-by-step explanation:

<h2><em><u>hope </u></em><em><u>it</u></em><em><u> helps</u></em><em><u> you</u></em><em><u><</u></em><em><u>3</u></em></h2>

8 0
2 years ago
Read 2 more answers
Can someone help me with this f(g(x))=2(3x-4)^2+5?
Greeley [361]

Answer:

f(x)=349525

Step-by-step explanation:

f(x)=2(3x-4)^2+5

f(x)= 6x - 8^7

f(x)= 6x - 2,097,152

f(-6x)= - 2,097,152

/-6x       /-6x

f(x)=349525


I hope I am not terribly wrong but I probably am good luck

7 0
3 years ago
Other questions:
  • What is 5/7 minus 1/4
    5·2 answers
  • ben wants to build a fence he has 22 yards of material his garden is 6 3\4 by 4 2\3 does he have enough material
    11·1 answer
  • 11089 divided by 13​
    13·2 answers
  • 8(2z-6) <br> Distributive property
    7·2 answers
  • Inverse function of exponential function
    11·1 answer
  • Write an expression to describe a rule for the sequence. Then find the 100th term in the sequence. 5, 13, 21, 29, 37, 45, … (1 p
    7·1 answer
  • A toy rocket was launched from the ground. The function f(x) = -16x2 + 128x shows the height of the rocket f(x), in feet, from t
    10·2 answers
  • Thanks in advance for your help ​
    10·1 answer
  • Which values are solutions to the inequality below?<br> Check all that apply.
    8·1 answer
  • Help me out here I’m lost
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!