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3 years ago

Marta simplified this expression.

Mathematics

1 answer:

adoni [48]3 years ago

8 0

Answer:

Step 1

Step-by-step explanation:

Marta made a mistake at step 1

4 log₅ x = log₅ 4x - wrong
4 log₅ x = log₅ x⁴ - correct

Property to be used

a log b = log aᵇ

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How long will it take for carbon 14 to decay to 10 % of it's original amount

Julli [10]

I believe that it will take one day

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3 years ago

Find the perimeter of the shape in the image A) 8cm B) 12cm C) 16cm D) 20cm

ivanzaharov [21]

Answer:

C. 16 cm

Step-by-step explanation:

Top side: 2 + 4 = 6

Right side: 1 + 1 = 2

Bottom: 2 + 4 = 6

Left side: 1 + 1 = 2

6+6+2+2 = 16 cm.

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3 years ago

How much smaller is the sum of the first 1000 natural numbers than the sum of the first 1001 natural numbers?

aleksandr82 [10.1K]

ANSWER

1001

EXPLANATION

The sum of the first n - natural numbers is

$S_n= \frac{n}{2} (2a + d(n - 1))$

The sum of the first 1000 terms is

$S_{1000}= \frac{1000}{2} (2(1) + 1(1000 - 1))$

$S_{1000}=500 (1001)$

$S_{1000}=500500$

The sum of the first 1001 terms is

$S_{1001}= \frac{1001}{2} (2(1) + 1(1001 - 1))$

$S_{1001}= 1001 \times (501)$

$= 501501$

The difference is

$501501 - 500500= 1001$

5 0

3 years ago

Read 2 more answers

Put these numbers in order from smallest to largest: 10, -10, 0, 1, -5

Svet_ta [14]

1. -5,-10,0,1,5,10

2. -3,-5,0,1,5,10

3. -10

4. -7

5. -30

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3 years ago

Roman55 [17]

Part A:What percentage of the total students surveyed like both watching television and reading?

The total amount of student is 230
The amount of students that like to read and watch television is 80

As a fraction it is 80/230
Turn that to a percentage
It is:34.7826%

Part A=34.7826%

Part B:What is the probability that a student does not like watching television also does not like reading?

On the table it shows 20

So the probability is 20/230

Part B=20/230

6 0

2 years ago