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3 years ago

I need help on math:(

Mathematics

1 answer:

Nadusha1986 [10]3 years ago

4 0

Answer:

A. 10

Step-by-step explanation:

The perimeter is the sum of all the outside lengths

Therefore, to find the value of x, you must do:

x + x + 5 + x + 7 = 42

3x + 12 = 42

3x = 30

x =10

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HELP PLEASE!!!

anyanavicka [17]

Answer:

$lnf(t)=0.4t$

Step-by-step explanation:

the logarithmic expression for an expression with e is called natural logaritm which is

$log_{e}(f(t))$

this is written in the natural logarithm or ln bye removing the base e and replacing log by ln, as given in the above answer

6 0

3 years ago

Simplify: 3gh^2 x 4g^3h^3

katrin [286]

$\bf 3gh^2\times 4g^3h^3\implies 3\cdot 4\cdot g^1g^3h^2h^3\implies 12\cdot g^{1+3}h^{2+3}\implies 12g^4h^5$

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3 years ago

Diana put $8000 in a 10-year CDpaying 5% interest compoundedmonthly. After 2 years, shewithdrew all her money, and as anearly wi

Svet_ta [14]

Answer:

$8,430.23

Explanation:

From the statement of the problem:

• The principal amount = $8,000

• Interest Rate = 5%

• Compounding Period = 12 (Monthly)

The compound interest formula is given as:

$A(n)=P\left(1+\frac{r}{k}\right)^{nk}$

Using the compound period formula, we first, calculate the amount in her account at the end of 1 year.

$\begin{gathered} A(1)=8000\left(1+\frac{0.05}{12}\right)^{12\times1} \\ A(1)=\$8409.30 \end{gathered}$

This means that the interest she made during the first year is:

$\text{ Interest during the first year}=8409.30-8000=\$409.30$

Next, calculate the amount in her account at the end of the second year.

$\begin{gathered} A(2)=8000\left(1+\frac{0.05}{12}\right)^{12\times2} \\ A(2)=\$8839.53 \end{gathered}$

Since she paid back all the interest she made during the first year, the amount Diana was left with is:

$\begin{gathered} 8839.53-409.30 \\ =8,430.23 \end{gathered}$

Diana was left with $8,430.23.

6 0

1 year ago

The base are of a cylinder is the quotient of its volume and its height true or false

Andrej [43]

Answer:

True.

Step-by-step explanation:

Volume of a cylinder = π r^2 h where h = height and π r^2 = the base area.

Volume / height = π r^2 h / h = π r^2 = base area.

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3 years ago

A proportional relationship is represented by the equation 2x=18y. If y= kx, where k is the constant of proportionality, then wh

Alik [6]

2x/2=18y/2
x=9y
x=9kx
k=1/9

3 0

3 years ago