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baherus [9]
3 years ago
11

HELP ME PLEASE, I NEED THIS BY TONIGHT

Mathematics
1 answer:
saul85 [17]3 years ago
7 0
The first option and the third option are correct.

(Although, it's probably way too late now...)
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What is the answer to, (4-1) . n = n . _
NikAS [45]

Answer:

(4-1)•n=n•(4-1)

Step-by-step explanation:

It should equal each other so no matter what n equals it will equal each other :3

4 0
3 years ago
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How to solve 421 divided by 2.54
irina [24]
Your answer should be 168.40 
7 0
3 years ago
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Jaimie ran 3 1/2 miles on Monday she ran half as far on Tuesday as she did on Monday how far did Jaimie run in all on Monday and
chubhunter [2.5K]
Half of 3.5 is 1.75 so 3.5 which is Monday plus Tuesday, 1.75 is 5.25 miles in all
4 0
3 years ago
The smiths have two children. The sum of their ages is 23. The produce of their ages is 132. How old are the children?
kolezko [41]

For this case we propose a system of equations:

x: Let the variable representing the age of the first child of the Smiths

y: Let the variable representing the age of the second child of the Smiths

According to the data of the statement we have to:

x + y = 23\\x * y = 132

From the first equation we have to:

x = 23-y

We substitute in the second equation:

(23-y) * y = 132\\23y-y ^ 2 = 132\\y ^ 2-23y + 132 = 0

We find the solutions by factoring:

We look for two numbers that, when multiplied, result in 132 and when added, result in 23. These numbers are 11 and 12.

Thus, we have that the factorized equation is:

(y-11) (y-12) = 0

Thus, the solutions are:y_ {1} = 11\\y_ {2} = 12

So, we can take any of the solutions:

With y = 11

Thenx = 23-11 = 12

Therefore, the ages of the children are 11 and 12 respectively.

Answer:

 The ages of the children are 11 and 12 respectively.

6 0
3 years ago
Margaret is saving money for her summer vacation. She calculates that her starting amount is 0.4% of the total amount she wants
garri49 [273]

0.4% can be written as 0.004 in decimal.

Step-by-step explanation:

Let the total amount she wants to save be 'a'

Starting amount = 0.4% of the total amount

= 0.4% of a

= (0.4/100) a

0.4% = 0.4/100

= 0.004

0.4% can be written as 0.004 in decimal.

5 0
3 years ago
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