2 years ago

The Ages of mark and Adam add up to 28 years total mark is 20 years older than Adam how old is adam

Mathematics

1 answer:

aleksandrvk [35]2 years ago

6 0

Answer:

Adam is 8.

Step-by-step explanation:

28-20=8

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Evaluate the expression. P(9, 3) · P(5, 4)

boyakko [2]

Answer:

$P(9,3) *P(5,4)$

And if we use the permutation formula given by:

$nPx = \frac{n!}{(n-x)!}$

And replacing we got:

$\frac{9!}{6!} \frac{5!}{4!}= 504*5 = 2520$

Step-by-step explanation:

For this problem we want to find the following expressionÑ

$P(9,3) *P(5,4)$

And if we use the permutation formula given by:

$nPx = \frac{n!}{(n-x)!}$

And replacing we got:

$\frac{9!}{6!} \frac{5!}{4!}= 504*5 = 2520$

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2 years ago

How many two-digit primes have both their digits non-prime?

Nuetrik [128]

Answer:

{ 11 , 19 , 41 , 61 , 89 } is only the two digits number having both their non-prime.

Step-by-step explanation:

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2 years ago

Use the prefix multipliers to express each measurement without any exponents. (Enter the number in the first blank and the units

mash [69]

Use different conversion factor to accomplish the task given above,
a. (78.9x10^-13 g) x (1 x 10^12 picogram/ 1 gram) = 7.89 pg
b. (6.41x10^-10 L) x (1 x 10^9 nanoliter / 1 L) = 0.641 nL
c. (3.15x10^11 m) x ( 1 x 10^-12 terameter / 1 meter) = Tm
d. (80 x10^-19) x (1 x10^18 atto / 1) = 8 atto

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2 years ago

A career placement test eliminates a profession when a person receives a score of 18 or less. If the score is calculated

Volgvan

Answer:

See the figure attached

Step-by-step explanation:

Let's call :

x: positive response

y: negative response

then the score is:

2x - 3y

A career placement test eliminates a profession when a person receives a score of 18 or less, that's represented by the following inequality:

2x - 3y ≤ 18

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2 years ago

Read 2 more answers

The perimeter of a triangle is 105 cm. If each of the two legs is exactly twice the length of the

Reptile [31]

<em>Greetings from Brasil...</em>

According to the question of the statement, we can conclude that

PQ = 2B

QR = 2B

PR = base = B

Perimeter = P = 105

P = PQ + QR + PR

105 = 2B + 2B + B

B = 21

4 0

2 years ago