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2 years ago

Calculate the value of the expression. 47 - (2 x4)

Mathematics

2 answers:

Arlecino [84]2 years ago

8 0

Answer:

Step-by-step explanation:

do 2 × 4 first to get 8 then subtract 8 from 47 to get 39

skelet666 [1.2K]2 years ago

3 0

Answer:

Step-by-step explanation:

47- (2 x 4) first multiply what's in the parentheses

47 - 8 next subtract

39 then you have your answer

47 = 39 after you get your answer you check your work

47 = 39 + 8 you just add the number you subtracted

47 = 47 if the numbers match you know you got it right

Hope this helps

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the sum of the reversed number and the original number is 154. Find the original number, if the ones digit in it is 2 less than

Usimov [2.4K]

Answer:

Step-by-step explanation:

Let the number be 10x + y. So, the reversed number is 10y + x.

The sum is 154.

So, (10x + y) + (10y + x) = 154

⇒ 11x + 11y = 154

⇒ x + y = 14 ..... (1)

Again, given that ones digit in the original number is 2 less than the tens digit.

So, y = x - 2 ...... (2)

Now, solving (1) and (2) we get,

x + x -2 = 14

⇒ 2x = 16

⇒ x = 8

So, from equation (2), y = x - 2 = 8 - 2 = 6

Therefore, the original number is 10x + y = 10 × 8 + 6 = 86 (Answer)

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2 years ago

What is 1/2 divided by 4

Y_Kistochka [10]

It is 1 over 8 aka 1/8. hope it helped.

3 0

2 years ago

Read 2 more answers

In a box 25 cards are there and 1 to 25 numbers are written on them. one card is drawn randomly. what is the probability that it

tensa zangetsu [6.8K]

Explanation :

Given that:

In a box 25 cards are there and 1 to 25 numbers are written on them.

• One card is drawn randomly.

To Find:

• What is the probability that it is multiple of 5.

We know that:

P(E)= F/T

Where,

P(E)= Probability of an event

• F= Favourable outcomes . T = Total outcomes

We have:

F = Number of cards which are multiple of 5

Cards having the number 5, 10, 15, 20, 25 are the multiples of 5.

So, F = 5

T = Total number of cards

• T = 25

P(F) The probabilityP(E) = The probability that it is multiple of 5

Finding the probability that it is multiple of 5:

P(E)= 5/25

P(E)=1/5

Hence,

The probability that it is multiple of 5 is ⅕

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2 years ago

What is 2.4(1.8) as w in algebraic form.

julsineya [31]

Answer:

2.4*1.8W= 4.32

Step-by-step explanation:

3 0

2 years ago

The average grain of salt is 0.0003 meters wide. Rhinovirus, which causes the common cold, is 0.00000003 meters wide. How many t

algol [13]

Answer:

$1\times 10^4\ times$

Step-by-step explanation:

Given:

Width of average grain of salt is, $w=0.0003\ m$

Width of Rhinovirus is, $W=0.00000003\ m$

Now, expressing each width in scientific notation form, we get:

$w=0.0003\ m = 3\times 10^{-4}\ m\\\\W=0.00000003\ m = 3\times 10^{-8}\ m$

Now, in order to get how many times 'W' is wider than 'w', we divide the two widths. This gives,

$\frac{W}{w}=\frac{3\times 10^{-4}\ m}{3\times 10^{-8}\ m}\\\\\frac{W}{w}=1\times 10^{-4-(-8)}=1\times 10^{-4+8}=1\times 10^4\\\\\therefore W=1\times 10^4\times w$

Therefore, the grain of salt is $1\times 10^4\ times$ wider than Rhinovirus.

5 0

2 years ago