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soldi70 [24.7K]
3 years ago
9

Order of Operations! Studying for finals

Mathematics
2 answers:
tatiyna3 years ago
6 0
12 - 2³ -4

1) 2³ =2*2*2=8

2) 12- 8 -4= 4 - 4 =0

12 - 2³ -4=0
andrew11 [14]3 years ago
4 0
PEMDAS 
(parenthesis, exponents, multiplication, division, addition, and subtraction).

So, the first thing you'd do is evaluate the exponent, since there's no parenthesis. So, it would turn to

12-8-4                     (2^3 = 2 * 2 * 2)

The next would be subtraction, since there's no multiplication, division, nor addition. Since there's only multiplication, it doesn't matter which one you do fist. So, it turns to 

12-8-4
4-4
0

So, the answer would be 0.

P.S. Remember PEMDAS, it's awesome ;)
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HELP<br> 15.Solve the equation, then choose the correct answer: <br> –4(x – 3) = –8
Dmitry_Shevchenko [17]

Answer:

x = 5

Step-by-step explanation:

-4 ( x - 3) = -8

-4x +12 = -8

-4x = -20

x = 5

8 0
3 years ago
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Given the equation 2 Square root of x minus 5 = 2, solve for x and identify if it is an extraneous solution.
Luba_88 [7]
Given: 2<span>√(x - 5) = 2

Taking the square of both sides:

 [</span>2√(x - 5) = 2]^2

4(x - 5) = 4
x - 5 = 1
x = 6

Among the choices, the correct answer is A. <span>x = 6, solution is not extraneous .</span>
3 0
4 years ago
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On August 2nd, 1988, a US District Court judge imposed a fine on the city of Yonkers, New York, for defying a federal court orde
Minchanka [31]

Answer:

a)

A(t) = 1,000,000 + 10,000,000t

B(t)= 0.01 +0.02t

b) No.

Step-by-step explanation:

a)<u> Penalty A:</u> 1 million dollars on August 2 and the fine increases by 10 million dollars each day thereafter.

If t represents the number of days after August 2,

A(t) = 1,000,000 + 10,000,000t

<u>Penalty B</u>: 1 cent on August 2 and the fine doubles each day thereafter.

A(t) = 0.01 + 2t(0.01) = 0.01 + 0.02t

b) Assuming your formulas in part (a) hold for t≥0, is there a time such that the fines incurred under both penalties are equal?

To solve this, we would have to equal both formulas and solve for t.

1,000,000 + 10,000,000t=0.01+0.02t\\9,999,999.98t=-999,999.99

By taking a look at this equation, we see that when we solve for t, t will be a negative number. Since the formulas are valid for t≥0, we can conclude that there won't be a time such that the fines are equal.

4 0
3 years ago
Solve for x in the equation<br> 7x+3=2x+13
Eddi Din [679]

Answer:

2

Step-by-step explanation:

subtract 2x from both sides then 3 from both. this gives you 5x = 10. divide by 5 and you get 2.

3 0
3 years ago
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Pam has monthly mortgage payment of $750. Her annual property taxes are $1200,her PMI is $55/month, and her homeowners insurance
Alenkinab [10]

Answer:

$100 + $66.67 + $55 = $221.67/month, which is the amount that must be deposited into Pam's escrow account each month....

Step-by-step explanation:

Pam's annual taxes are $1200 per year. It means her escrow each month needs to have 1/12 of that amount. 1200/12 = $100 per month

Her homeowner's insurance is $800 per year, that's 1/12 of that needs to be in her escrow account each month:

$800 / 12, or $66.67/month.

And PMI is $55/month

Add these three together:

$100 + $66.67 + $55 = $221.67/month, which is the amount that must be deposited into Pam's escrow account each month....

7 0
3 years ago
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