All categories

3 years ago

Please help me with maths. it's a standard form topic

Mathematics

1 answer:

dimulka [17.4K]3 years ago

7 0

Answer:

Bacteria A has diameter size of 1 micrometer = 1 × 10⁻⁶ m

a) <u>B is 1× 10⁻³ size of A:</u>

1 × 10⁻⁶ * 1 × 10⁻³ = 1 × 10⁻⁹ m

b) 1 nanometer = 1 × 10⁻⁹ m

And bacteria B diameter size is <u>equal</u> to 1 nanometer

You might be interested in

g A trial jury of 6 people is selected from 20 people: 8 women and 12 men. What is the probability that the jury will have an od

cricket20 [7]

Answer: P(odd) = 0.499

Step-by-step explanation:

Given:

Total number of people = 20

Number of men = 12

Number of women = 8

Number of jury to be selected = 6

For the jury to have an odd number of women. it must have either of the three.

1. 1 woman , 5 men

2. 3 women, 3 men

3. 5 women, 1 man

The total possible ways of selecting the 6 people jury is;

N = 20C6 = 20!/6!(20-6)!

N = 38760

The possible ways of selecting;

Case 1 : 1 woman, 5 men

N1 = 8C1 × 12C5

N1 = 8 × 792 = 6336

Case 2 : 3 women , 3 men

N2 = 8C3 × 12C3

N2 = 12320

Case 3 : 5 women, 1 man

N3 = 8C5 × 12C1

N3 = 672

P(Odd) = (N1+N2+N3)/N

P(odd) = (6336+12320+672)/38760

P(odd) = 19328/38760

P(odd) = 0.499

6 0

3 years ago

2. Jose is looking for a job while he takes part-time college classes. The

Leokris [45]

Answer: 51,440

Step-by-step explanation:

If a Veterinary tech earns 32,490 and a Barista earns 19,630

You're gonna create the equation ( 32,490 x 4 ) and get 129,960. Then your gonna subtract ( 19,630 x 4 ) from 129,960 and get around 51,440.

Also, you get the 4 from the number of years he works, which is 4.

5 0

3 years ago

Read 2 more answers

Which answer represents the series in sigma notation? −3+(−1)+1+3+5 A:∑j=15(2j−5)

insens350 [35]

Answer:

A:∑j=15(2j−5)

Step-by-step explanation:

a = -3

d = -1 - (-3) = -1 + 3 = 2

j-th term: a + (j-1)d

-3 + (j - 1)(2)

-3 + 2j - 2

2j - 5

8 0

4 years ago

Write as a decimal. If a repeating decimal, round to the nearest hundredth.

Mamont248 [21]

Given:

$\frac{475}{80}$

Let's evaluate and find the quotient.

We have:

$\frac{475}{80}=5.9375$

SInce it is not a repeating decimal, we are asked to leave to answer as it is.

A repeating decimal is a decimal with digits or group of digits that repeats endlessly.

The decimal 5.937

ANSWER:

5.9375

6 0

1 year ago

Suppose you invest $25,000 at simple interest rate r. If you receive $1,250 in total interest after four years, what is the inte

Misha Larkins [42]

$\text{Hello!}$

$\large\boxed{1.25\%}$

$\text{Use the simple interest formula I = P * r * t where:}\\\\\text{I = amount of interest}\\\text{P = principle (initial amount)}\\\text{r = interest rate}\\\text{t = time period}\\\\\text{Substitute the known values from the problem:}\\\\1250 = 25000 * r * 4\\\\1250 = 100000r\\\\r = 0.0125\\\\\text{Convert to a percentage:}\\\\0.0125 * 100 = 1.25\%$

3 0

3 years ago

Read 2 more answers