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dedylja [7]
4 years ago
7

Evaluate this exponential expression. 7 • (6 + 2)2 – 32 =

Mathematics
2 answers:
KIM [24]4 years ago
6 0

The answer to this exponential expression is 439.

To solve this expression, we need to use pemdas (parenthesis, exponents, multiplication, division, addition, subtraction). That measn that we first have to do the parenthesis.

7 * (8)² - 3²

Now we have to do exponents.

7 * 64 - 9

Now we have to do the multiplication (because of the order of pemdas)

448 - 9

Finally, we do the subtraction

439. That means that the answer to this exponential expression is 439.

Elodia [21]4 years ago
5 0

Hello!

To solve this , we will use PEMDAS (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction). We will do so below.

First we solve the parentheses.

7·(8^2)-3^2

7(64)-3^2

Next, we solve the exponent.

7·(64)-9

The next thing we have is multiplication. We multiply the numbers right next to each other, going left to right, as shown below.

448-9

Now, we subtract.

439

Therefore, our answer is 439.

I hope this helps!

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Vlad1618 [11]

Answer:

  1. A.  $23
  2. B.  0.997359

Step-by-step explanation:

1. The policy rates in the table are for $25000 of insurance. Lydia wants $100,000 of insurance, which is 4 times the amount quoted in the table. Hence her premium will be 4 times the quoted premium. Her spot in the table is in the age 24–30 row and the Female Non-Smoker column. Lydia's premium will be 4×$3.50, or $14 per month.

She wants 2 times the amount quoted in the table ($50,000) of insurance for her spouse, so the premium will be 2 times that quoted in the table. His spot in the table is in the age Under 24 row and the Male Smoker column. The premium for his insurance will be 2×$4.50, or $9 per month.

The total of the two premiums will be $14 = 9 = $23 per month.

___

2. The probability of living another year is the complement of the probability of dying. For a 35–44 year-old male, the probability of dying is 264.1/100,000, about 2.641×10^-3. The complement of that is ...

  1 - 0.002641 = 0.997359

6 0
4 years ago
Help me, please?<br> trust me I need it.
mr_godi [17]

Answer: ∠MON = 15°

Step-by-step explanation:

∠LON = ∠LOM + ∠MON

(9x + 44) + (6x+3) = 77

9x + 6x + 44 + 3 = 77

15x + 47 = 77

15x = 30

x = 2

∠MON = 6(2) + 3 = 15

6 0
4 years ago
A railroad track rises 30 feet for every 400 feet of track. What is the measure of the angle of elevation of the track?
gtnhenbr [62]

Answer:

Step-by-step explanation:

Rising 30 feet for every 400 feet of track is not a very large angle of elevation.  We set this up as a right triangle to use right triangle trig to solve for the missing angle.  The height is 30 and the hypotenuse is 400.  The height is the side opposite the angle in question, and the hypotenuse is the hypotenuse! This is the sin ratio.  Setting up the ratio using our info:

sin\theta=\frac{30}{400}

When you are looking for a missing angle measure, as we are here, use the 2nd-->sin buttons to find the inverse of sin, which looks like this:

sin^{-1}(

Enter in the fraction 30/400 after the parenthesis and then hit enter to get the angle measure of 4.3 degrees.

3 0
4 years ago
Can someone please help
Law Incorporation [45]

Answer:

B

Step-by-step explanation:

-4+4=0

If the temperature starts at -4 four and increases by 4, the temperature will be 0.

4 0
3 years ago
Chris Johnson ran the 40- yard dash in 4.24 seconds. What is the rate of speed? Round any answer to the nearest hundredth
sineoko [7]
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3 years ago
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