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
insens350 [35]
2 years ago
11

What is the length of ef in the right triangle below?

Mathematics
1 answer:
KonstantinChe [14]2 years ago
8 0

Answer:

24

Step-by-step explanation:

You're given a side and a hypotenuse in a right triangle, so you're able to use the Pythagorean Theorem.

a^{2} + b^{2} = c^{2}\\\\a^{2} + (7)^{2} = (25)^{2}\\

Now isolate a on one side and solve for a.

\\a^{2} = (25)^{2} - (7)^{2}\\\\a = \sqrt{(25)^{2} - (7)^{2}} \\\\a = 24

You might be interested in
Eileen picks up 5 movies at a movie store and calculates that it will cost her $32.50 before tax. A customer in front of Eileen
Svetradugi [14.3K]

Answer:

$34.125

Step-by-step explanation:

5% of 32.50 is 1.625

1.625+32.50=34.125

$34.125

6 0
3 years ago
Read 2 more answers
1. Write the equation of the line parallel to y = 7x – 5 and going through the point (4,31).
densk [106]

Answer:

y=7x+3

Step-by-step explanation:

Hi there!

We are given the equation y=7x-5 and we want to find the equation of the line that is parallel to it, and contains the point (4,31)

First, let's find the slope of y=7x-5, since parallel lines have the same slopes

The line y=7x-5 is written slope-intercept form, which is y=mx+b, where m is the slope and b is the y intercept

Since 7 is in the place of where m is, the slope of the line is 7

It's also the slope of the line parallel to it.

We can substitute 7 as m into the formula y=mx+b for our new line:

y=7x+b

Now we need to find b

Since the equation will pass through the point (4, 31), we can use it to solve for b; substitute 31 as y and 4 as x

31=7(4)+b

Multiply

31=28+b

Subtract 28 from both sides

3=b

Substitute 3 as b

y=7x+3

Hope this helps!

6 0
2 years ago
(3a2 + 2ab + 2b) + (5a2 − 3ab + 9)
ivann1987 [24]

Step-by-step explanation:

\tt{(3 {a}^{2}  + 2ab + 2b) + (5 {a}^{2}  - 3ab + 9})

~While adding , the sign of each term of second expression remains same. So, Remove the unnecessary parentheses :

⤑ \tt{3 {a}^{2}  + 2ab + 2b + 5 {a}^{2}  - 3ab + 9}

~Like terms are those which have the same base. Combine the like terms :

⤑ \tt{3 {a}^{2}  + 5 {a}^{2}  + 2ab - 3ab + 2b + 9}

⤑ \sf{8 {a}^{2}  - ab + 2b + 9}

\red{ \boxed{ \boxed{ \tt{ ⟿ Our \: final \: answer : 8 {a}^{2}  - ab + 2b + 9}}}}

Hope I helped ! ツ

Have a wonderful day / night ♡

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

6 0
3 years ago
Read 2 more answers
Janet types 584 words in 8 minutes. How fast can she type per minute?
wel

Answer:

73

Step-by-step explanation:

584/8

4 0
2 years ago
Read 2 more answers
Consider the net of a triangular prism where each unit on the coordinate plane represents five feet. If a can of spray paint cov
Lera25 [3.4K]

Answer:

B) 7 cans

Step-by-step explanation:

First task is to determine how many square units we have.

With the rectangle spanning 2 units on the X-axis and 3 unites on the Y-axis, we know that it has an area of 6 square units.

The two triangle shapes sum up to one unit total, since a triangle's area is (base * height) / 2.  Both have a base of 1 unit, and a height of 1 unit... so  (1 * 1) / 2  = 1/2 for each triangle.  Together, they occupy 1 unit.

So, total is 7 square units. Let's imagine it as a 7-unit by 1-unit rectangle, it will be easier to calculate.  Each unit is 5 feet.  So, this rectangle measures 35 (7 * 5) feet long, by 5 (1 * 5) feet wide... for a total of 175 (35 * 5) sq feet.

Since a can of paint can cover 25 sq feet, he'll need 7 cans (175 / 25).

7 0
3 years ago
Other questions:
  • joan counted that 2/10 of her jelly beans were red. Dean counted that 6/10 of his jelly beans were red. Hiw much greater a fract
    14·1 answer
  • If b equals 8 and h equals 6, what does bh/2 equal?
    5·2 answers
  • How do you write 47300 in scientific notation
    13·1 answer
  • 12+3 (4f-4) can you show your work and simple simplify
    12·2 answers
  • WILL GIVE BRAINLIEST PLEASE ANSWER
    7·2 answers
  • I need help ASAP plz
    12·2 answers
  • 1.) The check number on a check:
    8·1 answer
  • Keisha is reading a 310 page book at a rate of 23 pages per day.Use a point-slope equation to determine how many pages she will
    13·1 answer
  • Javier is considering two options for college.
    6·2 answers
  • What type of triangle is this triangle?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!