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2 years ago

I need help hah lol " It's too short. Write at least 20 characters to get a great answer. " there.

Mathematics

2 answers:

marishachu [46]2 years ago

7 0

Answer:

54.872

Step-by-step explanation:

volume of a cube = s³

where s = side length

side length given here is 3.8

so volume = 3.8³ = 54.872

Firdavs [7]2 years ago

7 0

Answer:

54.872

Step-by-step explanation:

3.8 * 3.8 *3.8

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How many solutions does the system of equations have?

statuscvo [17]

5x - 20y = 60...reduce by dividing by 5
x - 4y = 12
this is the same as the other equation....therefore, it is the same line...meaning infinite solutions
=============
y - 7x = -14
y = 7x - 14.....slope = 7, y int = -14

7y - 49x = -2
7y = 49x - 2
y = 7x - 2/7.....slope is 7, y int is -2/7

if the slopes are the same, but the y int are different, then u have a parallel lines with no solutions

5 0

3 years ago

X²+y²=25 xy=12 find the value of (3x+3y)²

Papessa [141]

Answer:

Step-by-step explanation:

(a + b)²=a²+2ab+b²

(3x+3y)²= (3x)²+2*3x*3y+(3y)²

=9x² + 18xy + 9y²

=9x² + 9y² + 18xy

= 9*(x²+y²) +18xy

=9*25 + 18*12

=225 + 216

=441

7 0

3 years ago

Create an exponential to describe $100 at 2% interest, compounded annually, for x years. y=100(.98)^x y=100(.8)^x y=100(1.2)^x y

zysi [14]

The exponential to describe $100 at 2% interest, compounded annually, for x years is $y=100(1.02)^{x}$

<h3><u>Solution:</u></h3>

Given that $ 100 at 2 % interest , compounded annually for "x" years

<em><u>The formula for compound interest, including principal sum, is:</u></em>

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

A = the future value of the investment/loan, including interest

P = the principal investment amount (the initial deposit or loan amount)

r = the annual interest rate (decimal)

n = the number of times that interest is compounded per unit t

t = the time the money is invested or borrowed for

Here in this sum,

P = $ 100

$r = 2 \% = \frac{2}{100} = 0.02$

number of years = x

Here given that compounded annually , so n = 1

Let "y" be the amount after "x" years

Substituting the values in formula we get,

$\begin{aligned}&y=100\left(1+\frac{0.02}{1}\right)^{1 \times x}\\\\&y=100(1+0.02)^{x}\\\\&y=100(1.02)^{x}\end{aligned}$

Thus the exponential to describe is $y=100(1.02)^{x}$

5 0

3 years ago

When a number is increased by 9.5%, the result is 58. What is the original number to the nearest tenth?

Sergeu [11.5K]

Answer:

Step-by-step explanation:

58÷1.095= 53 is the answer

8 0

3 years ago

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Suppose the diameter of a circle is 4 units. what is the circumference

yawa3891 [41]

Answer:

4pi

Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

Well, if the diameter is 4 u, the radius is 2 u.

The formula for finding the circumference of a circle is 2*pi*r

In this case, we'd just plug in 2 for r.

2*pi*2

4pi

(っ◔◡◔)っ ♥ Hope this helped, have a great day! ♥

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5 0

3 years ago

Read 2 more answers