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iragen [17]
3 years ago
8

PLEASEEE HELP ME I NEED THIS ASAP

Mathematics
2 answers:
Pavel [41]3 years ago
6 0

Answer:

The fourth option is the correct answer

Step-by-step explanation:

The given expression is

-2n(5+n-8-3n)

Given that n=3,We substitute the value of n into the expression and simplify.

This implies that,

-2n(5+n-8-3n)=-2(3)[5+3-8-3(3)]

=-6(5+3-8-9)

=-6(-9)

=54

Hence the answer is 54

mina [271]3 years ago
3 0
The correct answer is 54
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Table of inches and centimeters
TEA [102]

If you compare table values to answer choices, you can see right away that several don't work. The number of centimeters is greater than the number of inches, so adding to or multiplying the number of centimeters by some number more than 1 will not give you the smalller number that is inches.

While it may work for the first number (5 inches) to add 7.7 to get the first number of centimeters (12.7), you have to know that you can only add like to like. You can only add inches to inches (getting a result of inches), or centimeters to centimeters (getting a result of centimeters). From the point of view of the units involved, it is <em>nonsensical</em> to add a pure number to a number of inches and expect to get a number of centimeters.

So, we're down to the second choice:

- The number of inches is multiplied by 2.54 to find the number of centimeters.

_____

To find the pattern in the table, you can ...

  • observe that the inch values differ by 1
  • observe that the centimeter values differ by 2.54
  • realize that the constant differences mean the relation between inches and centimeters is linear, and that a change in an inch value of 1 inch is multiplied by 2.54 to find the corresponding change in centimeter value.

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I don't know what the first step in your problem solving process is supposed to be. In my problem solving process, the first step is always to <em>look at what you are given</em>. The next step is <em>look at what you are being asked for</em>.

8 0
3 years ago
Read 2 more answers
Can some one please help me on my home work please i just need some one to show me how they solved this equation answers and wor
nignag [31]

Step-by-step explanation:

well first of all you have to expand the brackets. so 5(y+2)=4(x-3)

5y+10=4x-12

then you subtract 10

5y=4x-12-10=4x-22

then divide by 5 to get the value of y

y=(4x-22)/5

3 0
2 years ago
Julissa is running a 10-kilometer race at a constant pace. After running for 18 minutes, she completes 2 kilometers. After runni
vodomira [7]
First, we need her speed as it will serve as the slope of the equation.
Distance = 2 km
time = 18 min
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Where k is the distance in km and t is the time in minutes.
6 0
3 years ago
In a batch of 440 water purifiers, 8 were found to be defective. What is the probability that a water purifier chosen at random
LiRa [457]

Answer:

1.8% or 1.818181%

Step-by-step explanation:

If in a batch of 440 water purifiers, we find 8 to be defective.

Then the probability of the next purifier being defective is 8/440

In percentage = 8/440 * 100

=> 8/44 * 10

=> 8/22 * 5

=> 40/22

=> 20 / 11

20/11 is roughly 1.8181818

Rounding it to the nearest tenth, we get 1.8%

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