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1 year ago

$4,700 is invested in an account earning 6.2% interest (APR), compounded

Mathematics

1 answer:

pickupchik [31]1 year ago

4 0

Answer:

(5 x (-20)) * (100 x (0.7))

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It is known that the amount of time needed to change the oil on a car is normally distributed with a standard deviation of 5 min

Dmitrij [34]

Answer:

(11.605 ; 22.195)

Step-by-step explanation:

11 10 16 15 18 12 25 20 18 24

Sample mean, xbar = Σx / n = 169 / 10 = 16.9

Standard deviation = 5.152 ( using calculator)

Confidence interval :

Xbar ± Margin of error

Margin of Error = Tcritical * s/√n

Df = n - 1 = 10 - 1 = 9

Tcritical at 99%, df =9 = 3.2498

Margin of Error = 3.2498 * 5.152/√10 = 5.2946

Lower boundary :

16.9 - 5.2946 = 11.6054

Upper boundary :

16.9 + 5.2946 = 22.1946

(11.605 ; 22.195)

4 0

1 year ago

I don't get this can u please show me step by step

Murljashka [212]

$\bf \begin{array}{llllll}
\textit{something}&&\textit{varies inversely to}&\textit{something else}\\ \quad \\
\textit{something}&=&\cfrac{{{\textit{some value}}}}{}&\cfrac{}{\textit{something else}}\\ \quad \\
y&=&\cfrac{{{\textit{k}}}}{}&\cfrac{}{x}
\\\\
&&y=\cfrac{{{ k}}}{x}&\impliedby 
\begin{array}{llll}
k=\textit{constant}\\
\qquad \textit{of variation}
\end{array}
\end{array}\\\\
-----------------------------\\\\
$

$\bf y=\cfrac{k}{x}\qquad 
\begin{cases}
y=0.2\\
x=0.3
\end{cases}\implies 0.2=\cfrac{k}{0.3}\implies 0.2\cdot 0.3=k
\\\\\\
\textit{thus, the equation will be}\quad y=\cfrac{0.06}{x}$

8 0

2 years ago

A chord in a circle is 18 cm long and is 5 cm from the center of the circle. How long is the radius of the circle

Veseljchak [2.6K]

2, just use pemdas.

5 0

2 years ago

The bottom of a ladder must be placed 5 feet from a building. the ladder is 14 feet long. how far above the ground does the ladd

Kryger [21]

Check the picture below.

6 0

3 years ago

Based on its degree, what kind of polynomial is this?<br> h(x) = 4x^4 + 2x - 5

cestrela7 [59]

Answer:

Quartic

Step-by-step explanation:

Given

$h(x) = 4x^4 + 2x - 5$

Required

Name the polynomial

The question required that the polynomial be named based on its degree.

This implies that, we name the polynomial based on the highest power of x

Highest power of x = 4

When the highest power of x in a polynomial is 4, such polynomial is a quartic polynomial.

Hence, by degree; the polynomial is quartic

5 0

2 years ago