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
Pavlova-9 [17]
1 year ago
10

What is the value of a?

Mathematics
1 answer:
Anna007 [38]1 year ago
5 0

Answer:

15 units

Step-by-step explanation:

By using the Pythagoras Theorem,

C^2 = A^2 + B^2

Substitute in the given values,

25^2 = a^2 + 20^2

625 = a^2 + 400

625 - 400 = a^2 + 400 - 400

a^2 = 225

a =  \sqrt{225}

= 15

Hope this too helped! ^^

I'd recommend watching a video or two on the topic of Pythagoras Theorem, if this explanation isn't clear enough.

You might be interested in
How many units are -7 and its opposite from zero?
kenny6666 [7]

Answer:

-7 is -7 units away from zero. Its opposite is 7 from zero.

Step-by-step explanation: Count from 0 how many digits away it is

3 0
2 years ago
Please help I really need it​
masha68 [24]

Answer:

There's 2: I've attached an image.

Step-by-step explanation:

Lines of symmetry are found when you fold it, and it's exactly the same on both sides of the line that you folded it.

If your teachers ask, no, it cannot be diagonal. The triangles would not match up.

6 0
2 years ago
Read 2 more answers
Sofia is taking a multiple choice test with a total of 100 points available. Each question is worth exactly 5 points. What would
IceJOKER [234]
60 points! Because 8 questions wrong would be - 40 points and its out of 100 points so 60 points
4 0
1 year ago
Read 2 more answers
For 15 hours of work, a plumber charges $435. If he charges the same amount for each hour of work, which table shows the correct
Volgvan

Answer:

29

Step-by-step explanation:

$435 divided by 15 is 29

(I think this is the equation)

7 0
2 years ago
Read 2 more answers
Each marble bag sold by Rachel's Marble Company contains 3 purple marbles for every 2 green marbles. If a bag has 21 purple marb
kozerog [31]
The ratio is 3:2, purple :green
The bag has 21 purple so to get from 3 to 21 it is multiplied by 7; so we must also multiply the 2 by 7 to keep the ratio balanced.
21:14
6 0
3 years ago
Other questions:
  • For which of the following is the arc between the two hands of a clock greater than a semicircle?
    12·2 answers
  • If f(x) =1/4x+3, what is the equation for f^-1 (x)?
    14·1 answer
  • Mrs. Siebenaller bought a bus for 25,000 with a 7% interest rate mrs s gets a loan payoff of 60 months how much interest would s
    13·1 answer
  • The dot plot below shows how many chocolate chips were in each cookie Lauren brought to school.
    9·1 answer
  • the value of a car when purchased in 2008 was $21,500. It loses 12% of its value every year. What is the value of the car in 201
    5·1 answer
  • The product of 576 and 684 is irrational or rational
    8·2 answers
  • Will someone make me Two one-step equations plz..
    12·1 answer
  • కమలములు నేటీనీ విడిచి పేటీ బయటకి వస్తే ఎం జరుగుతుంది​
    9·2 answers
  • Mary has $15.00 in her bank account. Annabelle has -$3.00 in her bank account. How much money do the two girls have in their acc
    11·1 answer
  • I
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!