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ololo11 [35]
3 years ago
11

How to evaluate the expression

Mathematics
1 answer:
jasenka [17]3 years ago
4 0

Answer:

1

Step-by-step explanation:

4^{5} can be expressed as 2^{(2)(5)} = 2^{10}

Similarly 4^{8} can be expressed as 2^{(2)(8)} = 2^{16}

Numerator becomes:

2^{10} · -2^{9} = -2^{19}

Denominator becomes:

2^{16} · -2^{3} = -2^{19}

Since numerator = Denominator,

Answer = 1

Edit reason: typo

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3 x 10^8/3.4 x 10^2 solved
storchak [24]

Answer: See explanation

Step-by-step explanation:

3 × 10⁸ ÷ 3.4 × 10²

(3 × 100000000) ÷ (3.4 × 100)

300000000 ÷ 340

882352.94117

Round to the nearest hundredth

882352.94117 ≈ 882352.94

Round to the nearest tenth

882352.94117 ≈ 882352.9

Round to the nearest whole number

882352.94117 ≈ 882353

Hope I helped!

6 0
3 years ago
Sally and Karl work at different jobs. Sally earns $7 per hour and Karl earns $5 per hour. They each earn the same amount per we
Lisa [10]

Answer:

Karl works 7 hours a week

Step-by-step explanation:

Step 1: Determine total amount that Sally earns

Total amount Sally earns=rate per hour×number of hours worked(h)

where;

Rate per hour=$7 per hour

Number of hours worked=h

Replacing;

Total amount Sally earns=(7×h)=7 h

Step 2: Determine total amount Karl earns

Total amount Karl earns=rate per hour×number of hours worked

where;

rate per hour=$5

number of hours worked=2 more than Sally=h+2

replacing;

Total amount Karl earns=5(h+2)

Step 3: Equate Sally's total earnings to Karl's total earnings and solve for h

7 h=5(h+2)

7 h=5 h+10

7 h-5 h=10

2 h=10

h=10/2

h=5

Karl works (h+2) hours=(5+2)= 7 hours

Karl works 7 hours a week

7 0
3 years ago
Please help it’s due today
alexandr402 [8]

Answer:

Angle <u>A</u><u> </u>= 15°

use angle properties of triangle to solve this.

7 0
3 years ago
Read 2 more answers
NEED HELP ASAP PLEASE
olga nikolaevna [1]

Answers:

  • interest = $75
  • balance at maturity = $3075

=============================================================

Explanation:

The simple interest formula is

i = p*r*t

where in this case,

  • p = 3000 = principal (amount deposited)
  • r = 0.10 = annual interest rate in decimal form
  • t = 3/12 = 0.25 = number of years

So,

i = p*r*t

i = 3000*0.10*0.25

i = 75 is the amount of interest earned

This adds onto the initial deposit to get the final balance when the CD matures (ie when you're able to withdraw the money without penalties)

The balance at maturity is p+i = 3000+75 = 3075 dollars

---------------

In short, you deposit $3000 into the CD and have to wait 3 months for the amount to update to $3075.

7 0
3 years ago
Hi can u pls help am trying to figure this out
LekaFEV [45]

Answer:

.

Step-by-step explanation:

3 0
3 years ago
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