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3 years ago

Fifteen is increased to 27. What is the percent of change? 55.6% 37% 44.4% 80%

Mathematics

1 answer:

Y_Kistochka [10]3 years ago

7 0

27-15 = 12

12/15 = 0.8 = 80%

Answer is 80%

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Please helppp !!! Urgent !!

madam [21]

Answer:

oooh, tough one...

Step-by-step explanation:

but, all in all, your life doesn't depend on it! Take a break and have a nice day!

3 0

3 years ago

Solve for x in the equation x2 + 14x+17--96

Veseljchak [2.6K]

Answer:

Option B.

Step-by-step explanation:

If a quadratic equation is defined as $ax^2+bx+c=0$ , the by quadratic formula

$x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

Consider the given equation is

$x^2+14x+17=-96$

We need to find the value of x.

Add 96 on both sides.

$x^2+14x+17+96=-96+96$

$x^2+14x+113=0$

Here, a=1, b=14 and c=113. Using quadratic formula we get

$x=\dfrac{-14\pm \sqrt{14^2-4(1)(113)}}{2(1)}$

$x=\dfrac{-14\pm \sqrt{-256}}{2(1)}$

$x=\dfrac{-14\pm \sqrt{256}\sqrt{-1}}{2}$ $(\sqrt{-1}=i)$

$x=\dfrac{-14\pm 16i}{2}$

$x=-7\pm 8i$

The value of x are x=-7 + 8i and x=-7 - 8i.

Therefore, the correct option is B.

8 0

3 years ago

Select the indicated real n th root(s) of a. n=5 a=243

Anastaziya [24]

Answer:

Ask your teacher because i don't know how to do it or i would help sorry

Step-by-step explanation:

6 0

3 years ago

What is the answer or question hurry it’s due tomorrow

Gala2k [10]

4,400 + 17,600 = 22,000.

4,400 / 22,000 = 0.2

0.2 = 20%

The answer is A.

Hope this helped☺☺

7 0

3 years ago

Read 2 more answers

A principal of $3900 is invested at 7.5% interest compounded annually how much will the investment be worth after 9 years

Paha777 [63]

$~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$3900\\ r=rate\to 7.5\%\to \frac{7.5}{100}\dotfill &0.075\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\dotfill &1\\ t=years\dotfill &9 \end{cases} \\\\\\ A=3900\left(1+\frac{0.075}{1}\right)^{1\cdot 9}\implies A=3900(1.075)^9\implies A\approx 7477.23$

7 0

2 years ago