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
laila [671]
3 years ago
15

I need help with this question ​

Mathematics
1 answer:
Sophie [7]3 years ago
7 0

Answer:

C

Step-by-step explanation:

using the pythagorean theorem,

a²+b²=c²

8²+7²=c²

64+49=c²

113=c²

\sqrt{113 =  \sqrt{c}² }

10.63=c

You might be interested in
Solve the inequality -2z-3<5. what is the value of z?
agasfer [191]

Hey there!

The answer to your question is z > -4

We can solve this like it is an equation, with one exception. When you divide or multiply by a negative number, in an inequality, you have to flip the inequality sign.

-2z - 3 < 5           add 3 to both sides

     -2z < 8          divide both sides by -2, and flip the inequality sign

         z > -4      

Good luck! Hope it helps, and have a great day!

8 0
2 years ago
Read 2 more answers
Which equations are true for x = –2 and x = 2? Select two options
fomenos

Answer:

Number 1 and Number 4

Step-by-step explanation:

By factoring, you can figure out the roots (x = -2 or x = 2)...

1. x^2 - 4 = 0

--> (x + 2)(x - 2) = 0

--> x = -2, x = 2

2. x^2 + 4 = 0

--> factors weirdly, so I won't write it. You'd have to use the quadratic formula.

3. 3x^2 + 12 = 0

--> 3 (x^2 + 4) = 0

--> factors weirdly (same as above)

4. 4x^2 - 16 = 0

--> 4 (x^2 - 4) = 0

--> 4 (x+2) (x-2) = 0

--> x = -2, x = 2

5. 2 (x-2) 2 = 0

--> x = 2

7 0
2 years ago
17 = a - 3 - За<br> Answer pleassse
Shkiper50 [21]

Answer:

-10 = a

Step-by-step explanation:

17 = a - 3 - За

Combine like terms

17 = -3 -2a

Add 3 to each side

17+3 = -3-2a+3

20 = -2a

Divide by -2

20/-2 = -2a/-2

-10 = a

4 0
3 years ago
Read 2 more answers
Solve using elimination PLEASE I NEED HELP!!! IT WOULD REALLY MEAN A LOT IF ANYONE CAN ANSWER THIS! 16 POINTS!!!
Marysya12 [62]

Answer:

  (x, y) = (2, -3/4)

Step-by-step explanation:

The point of the "elimination" technique is to combine the equations in a way that eliminates one of the variables. Sometimes this involves multiplying one or both of the equations by constants before you add those results together. In any event, the first step is to look at the coefficients of the variable terms to see if there is a simple combination of them that will result in zero.

The y terms have coefficients that are opposites of each other (4, -4), so you can simply add the two equations to eliminate y as a variable.

  (2x +4y) +(x -4y) = (1) +(5)

  3x = 6 . . . . . simplify

  x = 2 . . . . . . divide by 3

Now, you find y by substituting this value into one of the equations. I would choose the equation with the positive y-coefficient:

  2(2) +4y = 1

  4y = -3 . . . . . . subtract 4

  y = -3/4

Then the solution is ...

  (x, y) = (2, -3/4)

_____

A graphing calculator confirms this solution.

4 0
3 years ago
What is the value of the expression |x| + |y + z| when x = –6, y = –3, and z = –5?
mart [117]
|-6| + |-3 + (-5)|

6 + |-8|

6 + 8

14
8 0
3 years ago
Other questions:
  • What is the formula of a radius circle ?
    7·2 answers
  • Given the equation 4x − 26 = 2x − 4, which order of operations completely solves for x?
    15·1 answer
  • What is y+2=⅞(x-3) in standard form?
    10·1 answer
  • -1/5t-2=4 please help asap
    6·2 answers
  • Write your solution as an inequality: If 3
    5·1 answer
  • Solve for x: 18 over 10= x over 12 Prove your answer in the show your work box.<br> Pls hurry
    14·1 answer
  • Which of the following combinations of side lengths will form a triangle with vertices X, Y, and Z?
    11·1 answer
  • Cindy baked 6 cakes to raise money for her track team. The total cost for all of the ingredients for her cakes is $30.00. She wi
    11·1 answer
  • Please help i'll mark you the brainlyest
    7·1 answer
  • What goes up and down without moving?<br> Whoever answers first gets brainliest.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!