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2 years ago

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 x

 $x + ( - 9) = 4 \\ x - 9 = 4 \\ x = 4 + 9 \\ x = 13$ 

hope this helps you.

Can I have the brainliest please?

Have a nice day! 

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MakcuM [25]

15 boxes in total I’m pretty sure

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2 years ago

Please help me out !!! *please answer asap*

lorasvet [3.4K]

Answer:

the answer is 12

Step-by-step explanation:

p(n)= 6-2(1+n)

so if p(2)

then n=2

therefore,

p(2)= 6-2(1+2)

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8 0

2 years ago

The sum of Eric’s and Bob’s weights is 9 times the difference of their weights. The positive difference of their weights is also

Pie

Answer:

150

Step-by-step explanation:

So I will shorten Eric, and Bob's names as E, and B.

So the equations are this

B-E = B+E - 240, E as Eric, and B as Bob, and this E+B=9(E-B)

Move the variables and you get

-2E =- 240

Just divide them both by -2

and E=120

So when we know the value of E we can just plug it into the 1st question

120+B=9B+1080

Moves the Variables and numbers to the other side

8B=1200

1200/8= 150

B=150

There is Bob's weight

6 0

2 years ago

8 points and brainliest answer if you get it right

MissTica

Y= 17 would be the answer.

For something to be a function, it needs an input (x) and an output (y).

There is no x is this answer.

I hope this helps!
~cupcake

6 0

3 years ago

How to find restrictions for x?? 3. F(x)=2 sqrt x-4

stealth61 [152]

Answer:

none
none
x ≥ 4

Step-by-step explanation:

The restrictions placed on the independent variable in a function are those necessary to ensure that the function is defined for all allowed values of that variable.

In the graphs of problems 1) and 2), we see that the functions are defined for all values of x, so there are no restrictions.

3. For the function ...

$f(x)=2\sqrt{x-4}$

the value under the radical cannot be negative. The square root function is not defined for negative values, so the restriction is ...

x -4 ≥ 0

x ≥ 4 . . . . . . . add 4 to both sides of the inequality

4 0

2 years ago