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Serga [27]
3 years ago
12

What is 9+(-3)=?? Someone please help me

Mathematics
2 answers:
Vitek1552 [10]3 years ago
4 0

Answer is 6.

Get this by:

9+(-3)= ?

When you have the # + -# you will subtract. Hence 9 PLUS a negative 3 you get 6.

pentagon [3]3 years ago
3 0

The answer to 9+(-3)=6

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(1,-2) y=2x+1 what is the perpendicular line
Nookie1986 [14]

Answer: (1,-2), (1, 3)


Step-by-step explanation:y=2x+1

Y=2(1)+1

Y=2+1

Y=3


3=2x+1

-1 -1

2=2x

_ _

2 2


X= 1 new you got your perpendicular line


So answer is (1, -2), (1, 3)


4 0
3 years ago
Solve the following system of equations algebraically<br> 3x-y=0<br> 5x+2y=22
Lyrx [107]

3x  -  y  = 0     ⇒   2(3x  -  y  = 0 )   ⇒   6x - 2y = 0

5x + 2y = 22  ⇒   1(5x + 2y = 22)   ⇒   <u>5x + 2y</u> = <u>22 </u>

                                                              11x         = 22

                                                                x          = 2

3x  -  y  = 0   ⇒   3(2) - y = 0   ⇒   6 - y = 0   ⇒   6 = y

Answer: x=2, y=6

3 0
3 years ago
Which is the slope of the line y= -3x + 2?​
zavuch27 [327]

Answer:

slope is m

y = mx + b is your standard formula

slope = -3

Step-by-step explanation:

7 0
3 years ago
14.  
Tpy6a [65]
Its C. 113 ft because the height and the perimider of the trinagle
5 0
3 years ago
Gabrielle's age is two times Mikhail's age. The sum of their ages is 81. What is Mikhail's age?
Darya [45]

Answer:

27

Step-by-step explanation:

       Let <em>g </em>be Gabrielle's age and <em>m </em>be Mikhail's age.

       We can turn the statements the problem gives us into mathematical expressions to help us solve.

       Gabrielle's age is two times Mikhail's age:

                      <em>g </em>= 2<em>m</em>

       The sum of their ages is 81:

                      <em>g </em>+ <em>m </em>= 81

       This gives us a system of equations that will allow us to solve for Gabrielle's age.

<em>g </em>+ <em>m </em>= 81

(2<em>m</em>)<em> </em>+ <em>m </em>= 81

3<em>m </em>= 81

<em>m</em> = \frac{81}{3}

<em>m </em>= 27

       If we need to solve for Gabrielle's age, we can do the following.

<em>g </em>= 2<em>m</em>

2(27)<em> </em>= <em>g</em>

54 = <em>g</em>

g = 54

Mikhail's age is 27.

Gabrielle's age is 54.

8 0
2 years ago
Read 2 more answers
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