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2 years ago

PLEASE HELP!!!

Mathematics

1 answer:

zloy xaker [14]2 years ago

8 0

Answer:

Step-by-step explanation:

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2.5 QUIZ ALGEBRA 2

LUCKY_DIMON [66]

Answer:

Step-by-step explanation:

x²+24x+60=0

x²+24x+(24/2)²=-60+(24/2)²

(x+12)²=-60+144

(x+12)²=84

3 0

3 years ago

4x+5=45 (Show work to get brainliest) A) 5 B) 10 C) 15 D) 20

jasenka [17]

Answer:

B) 10

Step-by-step explanation:

4x+5=45

-5 -5

4x=40

/4 /4

x=10

3 0

3 years ago

Read 2 more answers

Evaluate 7(-4) - |-6| + |4| A. 13 B.-18 C. -30

tester [92]

Hello there!

Answer: ⇒ C. -30

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Step-by-step explanation:

First you had to remove parenthesis.

$-7*4-|-6|+|4|$

Then you multiply by the number.

$=-28-|-6|+|4|$

Apply absolute value.

$|-6|=6$

$=-28-6+|4|$

Again apply absolute value.

$|4|=4$

$=-28-6+4$

Simplify it's should be the correct answer.

$=-30$

________________________________________________________________

Hope this helps!

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-Charlie

_____________________________________________________

8 0

3 years ago

Evaluate (18)^2-(15)^2 Please show working.

dexar [7]

Answer:

Step-by-step explanation:

You can solve it by Squaring/multiply 18 by itself and 15 by itself then subtract them both:

(18 × 18) - (15 × 15)

324 - 225

You could also do difference of two squares:

(x² - y²)

= (x + y) (x - y)

= (18 + 15) (18 - 15)

= (33) (3)

= 99

8 0

2 years ago

Read 2 more answers

How much money should be invested at 5% interest, compounded quarterly, so that 7 years later the investment will be worth $5000

vampirchik [111]

$\bf \qquad \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+\frac{r}{n}\right)^{nt}
\quad 
\begin{cases}
A=\textit{accumulated amount}\to &\$5000\\
P=\textit{original amount deposited}\\
r=rate\to 5\%\to \frac{5}{100}\to &0.05\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{quarterly, four times}
\end{array}\to &4\\
t=years\to &7
\end{cases}
\\\\\\
5000=P\left(1+\frac{0.05}{4}\right)^{4\cdot 7}\implies 5000=P(1.0125)^{28}\\\\\\ \cfrac{5000}{(1.0125)^{28}}=P$

8 0

2 years ago