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3 years ago

Evaluate. write in simplest form. for 6 -b/3a a = 10, b = –9

Mathematics

1 answer:

mr Goodwill [35]3 years ago

3 0

(6+9)/30=15/30=1/2

The answer is 1/2

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How would I solve n/5-3n/10=1/5 pls help me I am literally failing math.

otez555 [7]

Answer:

53/5

Step-by-step explanation:

since 10 is the denominator of the denominator we can move it to the numerator, giving us 10n/5-3n = 1/5

multiply all sides by 5-3n, giving us 10n = (5-3n)/5

now multiply by 5 to get rid of the final denomintor, 50n = 5-3n

move 3n to the other side 53n = 5, n = 53/5

8 0

3 years ago

1 and 3 quarter million in words

lakkis [162]

Answer:

one million seven hundred and fifty thousand

Step-by-step explanation:

the 3 quarter million is 750,000 (seven hundred and fifty thousand)

and the one million is a million

3 0

3 years ago

Read 2 more answers

I really don’t understand what the questions asking? How do I solve this

Eddi Din [679]

Answer:

$17.85

Step-by-step explanation:

Let the dollar amount per shirt be represented by s.

Let the dollar amount per pants be represented by p.

You have the following system:

3s+2p=104.81

2s+1p=61.33

If I multiply the bottom equation by -2, I can set the system up for elimination since the equations are already and the same form and I will have 2p and -2p in the same column there. 2p+(-2p)=0

Multiplying equation 2 by -2:

3s+2p=104.81

-4s-2p=-122.66

-----------------------Add the equations:

-1s =-17.85

Multiply both sides by -1:

s=17.85

So one shirt cost $17.85

5 0

3 years ago

The solution set of an inequality is shown below.

DENIUS [597]

B is the correct answer because it shows the solution set of an inequality

3 0

2 years ago

Sam invests a sum of money in a retirement account with a fixed annual interest rate of 7%

Zolol [24]

Answer:

The initial amount of investment was $7,822

Step-by-step explanation:

The formula for compound interest, including principal sum is:

$A=P(1+\frac{r}{n})^{nt}$ , where

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

P is the principal investment amount

r is the annual interest rate (decimal)

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

t is the time the money is invested or borrowed for

Let us use this rule to solve the question

∵ Sam invests a sum of money in a retirement account with a fixed

annual interest rate of 7% compounded quarterly

∴ r = 7% = $\frac{7}{100}$ = 0.07

∴ n = 4 ⇒ compounded quarterly

∵ After 13 years, the balance reaches $19,280.02

∴ A = 19,280.02

∴ t = 13

Substitute these values in the rule above to find P

∵ $19,280.02=P(1+\frac{0.07}{4})^{4(13)}$

∴ $19,280.02=P(1.0175)^{52}$

→ Divide both sides by $(1.0175)^{52}$

∴ 7,821.99888 = P

→ Round it to the nearest dollar

∴ 7,822 = P

∴ P = $7,822

∴ The initial amount of investment was $7,822.

8 0

3 years ago