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
natulia [17]
2 years ago
8

What number must be added to -9 to equal +4?

Mathematics
1 answer:
Vlad1618 [11]2 years ago
8 0

Answer:

13

Step-by-step explanation:

let the unknown number be <em>x</em>

<em>x + ( - 9) = 4 \\ x - 9 = 4 \\ x = 4 + 9 \\ x = 13</em>

<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em> </em><em>you</em><em>.</em>

<em>Can</em><em> </em><em>I</em><em> </em><em>have</em><em> </em><em>the</em><em> </em><em>brainliest</em><em> </em><em>please</em><em>?</em>

<em>Have</em><em> </em><em>a</em><em> </em><em>nice</em><em> </em><em>day</em><em>!</em><em> </em>

You might be interested in
What is the diameter of a circle with a 5 inch circumference?
Veseljchak [2.6K]
Circumference = 2πr = 5
Diameter = 2r
2r = 5/π

In short, Your Answer would be 5/π

Hope this helps!
8 0
3 years ago
A coin is tossed 40 times and shows heads 23 times. Calculate the experimental probability of the coin showing heads.
Over [174]

Answer:

0.575

Step-by-step explanation:

There are two types of probabilities:

1. Theoretical Probability

2. Experimental Probability

The probability based on mathematical theories is called theoretical probability. It is not always true. i.e. the probability of getting a head in a toss of coin is 1/2 or 0.5 or 50%

Experimental probability is based on experiments. Experimental probability is always going to change whenever the experiment is performed.

The theoretical probability of getting a head while tossing a coin will always be 50% while experimental probability might be different the next time, experiment is performed.

In this case, the experimental probability will be 23/40 or 0.575 ..

8 0
3 years ago
Help with 10 please!
Alexus [3.1K]
Gabrielle is x years old.
Felicia is 6 years older.....so Felicia is x + 6
the mom is twice as old as felicia...so the mom is 2(x + 6)
the aunt is x years older then mom....so the aunt (tanya) is 2(x + 6) + x

so Tanya/s age is :
2(x + 6) + x =
2x + 12 + x =
13x + 12 <===
8 0
3 years ago
The area of a rectangle is 0.8 square units. The length is 3.2 units and the width is x units.
Naddika [18.5K]
Area= l*b
0.8=3.2*x
0.8/3.2=x
x=0.25 units
3 0
3 years ago
Read 2 more answers
Use the given information to solve for x and y
Anuta_ua [19.1K]

Answer:

x = 10 and y = 7

Step-by-step explanation:

Equalateral triangle means all sides are equal.

x = 10,  easy

make y + 3 = 10

y = 7

Easy, no real math needed. lol

4 0
3 years ago
Other questions:
  • I have my geometry midterm on Friday and I don't know how to do this problem. Someone help?
    11·1 answer
  • A certain truck weighs 2 metric tons. A person weighing 60 kilograms gets in the truck, followed by a 70 kilogram person. How ma
    13·1 answer
  • Which expressions are equivalent?
    8·1 answer
  • Explain how to value of the 7 in 327,902 will change if you move it to the tens place
    5·2 answers
  • GONZALEZ
    7·1 answer
  • In a competitive exam 84% of candidate passed and 780 failed find the number of candidates appeared for the examination
    6·1 answer
  • The length, width and height of a rectangular box are represented by 2x, 4x+1 and 5x-6 respectively. When the volume is expresse
    10·1 answer
  • BRAINLIESTTT ASAP!
    7·1 answer
  • What is the highest you can count to in pi
    8·1 answer
  • Quadratic Equations<br> How to find x and y-intercepts from vertex form (not standard).
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!