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3 years ago

Subtract and simplify.

Mathematics

2 answers:

goldfiish [28.3K]3 years ago

6 0

Step-by-step explanation:

( - y² - 3y - 5 ) - ( - 3y² - 7y + 4)

= - y² - 3y - 5 + 3y² + 7y - 4

= 2y² + 4y - 9 

Anton [14]3 years ago

4 0

Look at the attached picture⤴

Hope this will help u...

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Reflect Rodrigo drew this diagram

12345 [234]

Ugh I hate math so much are you in 8th grade too?? I’m doing the same thing

7 0

2 years ago

Solve: In 2x + In 2 = 0 DONE

pychu [463]

Answer:

$x=\frac{1}{4}$

Step-by-step explanation:

We can use some logarithmic rules to solve this easily.

Note: Ln means $Log_e$

Now, lets start with the equation:

$ln(2x) + ln(2) = 0\\ln(2x) = -ln(2)$

Writing left side with logarithmic base e, we have:

$Log_{e}(2x) = -ln(2)$

We can now use the property shown below to make this into exponential form:

$Log_{a}b=x\\means\\a^x=b$

So, we write:

$Log_{e}(2x) = -ln(2)\\e^{-ln(2)}=2x$

We recognize another property of exponentials:

$a^{bc}=(a^{b})^{c}$

So, we write:

$e^{-ln(2)}=2x\\(e^{ln(2)})^{-1}=2x$

Also, another property of natural logarithms is:

$e^{(ln(a))}=a$

Now, we simplify:

$(e^{ln(2)})^{-1}=2x\\(2)^{-1}=2x\\\frac{1}{2}=2x\\x=\frac{\frac{1}{2}}{2}\\x=\frac{1}{4}$

This is the answer.

7 0

2 years ago

Solve The Equation Below

Flura [38]

Answer:

Step-by-step explanation:

10 + sqrt(y) = 14

Subtract 10 from each side

10 -10+ sqrt(y) = 14-10

sqrt(y) = 4

Square each side

(sqrt(y)) ^2 = 4^2

y = 16

4 0

2 years ago

Read 2 more answers

True or false Question in picture?

Sunny_sXe [5.5K]

False. b is the y-intercept.

⭐ Please consider brainliest! ⭐

✉️ If any further questions, inbox me! ✉️

6 0

3 years ago

Read 2 more answers

Hiii can someone pls pls pls help asap

AlekseyPX

Answer:

k = 3.5

Step-by-step explanation:

You need to divide all the numbers.

21/6 = 3.5

24.5/7 = 3.5

28/8 = 3.5

31.5/9 = 3.5

So, the answer is 3.5.

8 0

2 years ago

Subtract and simplify.​

Subtract and simplify.