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3 years ago

Evaluate the following: −3 − (−2). (5 points) Question 1 options: 1) −5 2) −1 3) 1 4) −6

Mathematics

1 answer:

Ganezh [65]3 years ago

7 0

Answer:

2) -1

Step-by-step explanation:

it is easy

we have to first open the brackets, as it is ' - ' we have to change the sign to opposite of that of the number in the bracket and then solve it.

so the number 2 is having negative sign, we make it positive. this rule is applied only when there is a negative sign and a bracket is there.

-3-(-2)

-3+2

=-1

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Marie saved $3,000 dollars last year. She saved $600 in the month of January. What percent of the money she saved last year was

Archy [21]

Answer:

20% of the money was saved from January.

Here is the way to find percentage.

First: work out the difference (increase) between the two numbers you are comparing.

Increase = New Number - Original Number

Then: divide the increase by the original number and multiply the answer by 100.

% increase = Increase ÷ Original Number × 100.

Step-by-step explanation:

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3 years ago

Read 2 more answers

14a²b 7a²b = Simplify

lidiya [134]

Step-by-step explanation:

if14a^2b/7a^2b answer is 2

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3 years ago

Which logarithmic graph can be used to approximate the value of y in the equation 4^y = 5?

Sloan [31]

$4^{y} = 5

log_{4}(4)^{y} = log_{4}(5)

y=log_{4}(5)

So, the graph of the function should be y=log_{4}(x), or f(x)= log_{4}(x)

Correct answer is the last one.$

3 0

3 years ago

Which equation is equivalent to the equation x^2+y^2= 25?

satela [25.4K]

9514 1404 393

Answer:

D. y = ±√(25 -x²)

Step-by-step explanation:

Subtract x² and take the square root to solve for y.

x² +y² = 25 . . . . . . . given

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3 0

2 years ago

You just purchased two coins at a price of $670 each. Because one of the coins is more collectible, you believe that its value w

DerKrebs [107]

Answer:

The value of first coin will be $151.51 more than second coin in 15 years.

Step-by-step explanation:

You have just purchased two coins at a price of $670 each.

You believe that first coin's value will increase at a rate of 7.1% and second coin's value 6.5% per year.

We have to calculate the first coin's value after 15 years by using the formula

$A=P(1+\frac{r}{100})^{n}$

Where A = Future value

P = Present value

r = rate of interest

n = time in years

Now we put the values

$A=670(1+\frac{7.1}{100})^{15}$

$A=670(1+0.071)^{15}$

$A=670(1.071)^{15}$

A = (670)(2.797964)

A = 1874.635622 ≈ $1874.64

Now we will calculate the value of second coin.

$A=670(1+\frac{6.5}{100})^{15}$

$A=670(1+0.6.5)^{15}$

$A=670(1.065)^{15}$

A = 670 × 2.571841

A = $1723.13

The difference of the value after 15 years = 1874.64 - 1723.13 = $151.51

The value of first coin will be $151.51 more than second coin in 15 years.

8 0

3 years ago