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4 years ago

8

Come up with a scenario that explains why hours (hours for what?) goes down with time. It can be short, just a couple sentences

or so.

1 answer:

frozen [14]4 years ago

8 0

For example Sarah may be taking a test she has 2 hours to take the test.As more time passes the amount of hours go down

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Solve each system by elimination. substitution by multiplication

umka2103 [35]

M = 135/19 and n = -5/19

You have to give them like terms so that when you eliminate they cancel out and you can solve. The easiest way to do so is by multiplying the top equation by -4 and the bottom by 3.

4 0

3 years ago

A man is paid $1500 salary. He spends 20% of the salary for his kids education, 35% for food, 15% for miscellaneous and he saves

Alexxandr [17]

<h3>G I V E N : </h3>

A man is paid $1500 salary. He spends 20% of the salary for his kids education, 35% for food, 15% for miscellaneous and he saves the rest. How much money does he save?

<h3>S O L U T I O N : </h3>

Total Income = $ 1500

According to the question,

He spends 20% to his kids education

He spends 35% for food

He spends 15% for miscellaneous

Out of total income he spends 20% on kids education

So, amount spent on kids education = 20% of $1500

Amount = 20/100 × $1500

Amount = $300

Hence, money spent on his kids education is $300

35% is spent on food

Money spent on food = 35% of $1500

Money spent = 35/100 × $1500

Money spent = $525

Hence, money spent on food is $525

15% is spent on miscellaneous

Money spent on miscellaneous = 15% of $1500

Money spent = 15/100 × $1500

Money spent = $225

Hence, money spent on miscellaneous is $225

Now, adding all the three we get

$300 + $525 + $225

$825 + $225

$1050

Total money spent = $1050

Remaining money = $1500 - $1050 = $450

<u>Remaining amount left with him is $450</u>

3 0

3 years ago

Read 2 more answers

Which equation can be simplified to find the inverse of y = 5x² + 10?

notsponge [240]

Answer:

See below

Step-by-step explanation:

Here is how to start....you didn't include the equations in question, so I do not know what the answer may be

solve for x

y-10 = 5 x^2 divide thru by 5

(y-10)/5 = x^2 'sqrt' both sides

± sqrt( (y-10) / 5 = x change x's and y's

± sqrt ((x-10)/5) = y

6 0

2 years ago

If p is true and ~ q is false, then p ~ q is _____ false.

ozzi

Vas happenin
Hope you having a good day
I think it’s A
Hope this help *smiles*

3 0

3 years ago

From a full 50-liter container of a 40% concentration of acid, x liters are removed and replaced with 100% acid. (A) Write the a

padilas [110]

Answer:

See explanation

Step-by-step explanation:

Given:

50 liter container

40% concentration of acid

x liters are removed and replaced with 100% acid

(A)

Acid in 50-liter container = 40% of 50 liters

= (40/100) * 50

= 0.4 * 50

= 20

So there are 20 liters amount of acid in 50 liter container.

Now x liters are removed and replaced with 100% acid

The acid in x-liter

40% of x liters = (40/100) * x = 0.4 * x

When x liters are removed then amount of acid that remained in container:

20 - 40% of x liters = 20 - (40/100) * x = 20 - 0.4 * x

This can also be written as:

(50-x) (40/100) = (40*50/100) - (40*x/100) = 2000/100 - 40x/100 = 20 - 2x/5

Since x liters replaced with 100% acid so this becomes:

20 - 40% of x liters + 100% of x liters

= 20 - (40/100) * x + 100/100 * x

= 20 - (40/100) x + (100/100)x

= 20 + (100-40/100)x

= 20 + (60/100)x

= 20 + 0.6 x

This can also be written as:

20 - 2x/5 + x = 20 + 3x/5 = 20 + 0.6 x

Hence the amount of acid in the final mixture as a function of x:

f(x) = 20 + 0.6 x

(B)

The value of x can not be greater than 50 liters and can not be lesser than 0 liters.

so, range is [0, 50] where both 0 and 50 are inclusive.

(C)

Since final mixture is 50% acid So

Acid = 50% of 50 litres =

= (50/100) * 50

= 1/2 * 50

= 50/2

= 25

Put 25 in the computed function of x

20 + 0.6 x = 25

0.6x = 25 - 20

0.6x = 5

x = 5/0.6

x = 8.333333

x = 8.3 liters

3 0

3 years ago