All categories

2 years ago

What is the answer to -3 + (-12)=

Mathematics

2 answers:

BabaBlast [244]2 years ago

5 0

Answer:

-15

Step-by-step explanation:

iragen [17]2 years ago

4 0

Answer:

-15

Step-by-step explanation:

when adding two negative numbers, just add like normal and put a negative sign.

You might be interested in

Can someone solve this for me?

Sav [38]

Answer:

Step-by-step explanation:

9 is 3/4*12.

3 0

3 years ago

5^(2x-1)+5^(x+1)=250 how do you solve? thank you

zepelin [54]

Answer:

x = 2

Step-by-step explanation:

Exponential Equations

Solve:

$5^{2x-1}+5^{x+1}=250$

Separate each exponential:

$5^{2x}5^{-1}+5^{x}5^{1}=250$

Operating:

$\displaystyle \frac{5^{2x}}{5}+5^{x}5=250$

Multiplying by 5:

$5^{2x}+25\cdot5^x=1250$

Rearranging:

$5^{2x}+25\cdot5^x-1250=0$

Recall that:

$5^{2x}=(5^{x})^2$

$(5^{x})^2+25\cdot5^x-1250=0$

Calling

$y=5^{x}:$

$y^2+25y-1250=0$

Factoring:

$(y-25)(y+50)=0$

There are two possible solutions:

y=25

y=-50

Since

$y=5^{x}$

y cannot be negative, thus:

$5^{x}=25=5^2$

The solution is:

x = 2

8 0

3 years ago

I understand how to find out slope but I need help finding out what to do after that

barxatty [35]

Just look at the line and see how many times it goes up it is just like rise over run it is simple

8 0

3 years ago

5x−6=3x+10 PLSPLS HELP

vichka [17]

Answer:

x = 8

Step-by-step explanation:

Let's solve your equation step-by-step.

5x−6=3x+10

Step 1: Subtract 3x from both sides.

5x−6−3x=3x+10−3x

2x−6=10

Step 2: Add 6 to both sides.

2x−6+6=10+6

2x=16

Step 3: Divide both sides by 2.

2x /2 = 16/ 2

x=8

3 0

3 years ago

Read 2 more answers

For which function is the following always true?

Ainat [17]

Answer:

i think ur right or letter b butu not c

Step-by-step explanation:

4 0

2 years ago