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
lina2011 [118]
2 years ago
8

Someone please help me answer this

Mathematics
2 answers:
Brrunno [24]2 years ago
8 0
B= 30
a2+b2=c2
72^2+b^2 = 78^2
5184+b^2 = 6084
b2 = 900
b = 30
S_A_V [24]2 years ago
6 0

Answer:

b = 30 km is the answer

Step-by-step explanation:

a = 72 km

b = ?

c = 78 km

According to the Pythagoras theorem,

a² + b² = c²

72² + b² = 78²

5184 + b² = 6084

b² = 6084 - 5184

b² = 900

b = 30 km

∴ b = 30 km is the length of the missing leg

You might be interested in
Add. (Reduce fractie<br> (21)<br> -5<br> + 4
jeka57 [31]
You have A picture or something of what you mean?
7 0
3 years ago
Find the value of x ​
babunello [35]

Answer:

70

Step-by-step explanation:

6 0
2 years ago
Erin was completing the square of the quadratic function in order to find the extreme value. What is the next step in the proces
Lady bird [3.3K]

Step-by-step explanation:

ax^2+bx+c=0

a=leading term

ok so if the leading term is positive then opens up and has a <u>min</u>

if leading term is negative then opens down and has a <u>max</u>

leading term is positive

1x^2+8x

it has a min

to complete the square, move c aside take 1/2 of b and square it

b=8

8/2=4

4^2=16

now add that to both sides

x^2+8x+16+6=0+16

factor perfect square

(x+4)^2+6=16

subtract 6

(x+4)^2=10

subtract 10

(x+4)^2-10=0

vertex aka min or max is (h,k) when ou have

y=a(x-h)+k

h=-4

k=-10

7 0
3 years ago
Two times the quantity of seven less than one fourth of a number is equal to four more than one third of the number what is the
Evgen [1.6K]

Answer:

60?

Step-by-step explanation:

5 0
3 years ago
4. Find the solution of y = 2x + 5 for x = 1.<br> A (1, 7)<br> B (3, 1)<br> C (1, 12)<br> D (1, -2)
Sati [7]

Answer:

A

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • How do you do 18+2x=-8x+6(7+3x)
    8·1 answer
  • What do I put in the missing number box?
    9·2 answers
  • What is the value of x?<br> ASAP
    6·2 answers
  • Which of the following are the correct properties of slope?<br>Check all that apply.​
    5·2 answers
  • The are of a rectangle is 50m^2 , the length is 100m . Calculate the width
    9·2 answers
  • A linear correlation scatterplot is also a direct proportionality. True or False
    15·1 answer
  • Please help me please help please help!!!!!!!!!!!
    8·2 answers
  • Somebody help meeee!
    9·2 answers
  • Find the area of the square
    5·1 answer
  • I am very confused. the textbook didn't say anything about this....
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!