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slavikrds [6]
4 years ago
12

Twice a number plus 5 is -3. I don’t understand it help please

Mathematics
1 answer:
VMariaS [17]4 years ago
5 0

Answer:

2n+5 =3

n=-1

The number is -1

Step-by-step explanation:

Let n be the number

Twice the number

2n

Plus 5

2n+5

is means equals

2n+5 =3

Now we want to solve

Subtract 5 from each side

2n+5-5 = 3-5

2n = -2

Divide each side by 2

2n/2 = -2/2

n = -1

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Let h be the function that assigns each student ID number to a grade level.
denis-greek [22]

Answer:

It is a function Jonny!

Step-by-step explanation:

Hello! I would say to Jonny:

Jonny! A function is a relation between two sets, in which every element of the first set (domain) is assigned only one element of the second set (codomain).

If you have serveral elements of the first set with the same corresponding element of the second set it is correct to call that relation a function.

However, if you have an element of the first set for which your relation can relate to more than one element of the second set, then Jonny, that is not a function.

In the present case, every student ID number can only be realted to a number of the set {9, 10, 11, 12}, a student cannot have more than one current grade level. Therefore, that relation is in fact a function

5 0
3 years ago
A) 172<br><br> b) 192<br><br> C) 212<br><br> D) 232
tigry1 [53]

Answer:

212

Step-by-step explanation:

volume of new figure = sum of the two individual figures

volume of one cuboid=l*b*h

volume of first cuboid=92

volume of second  cuboid=120

sum of two figures=212

hope this helps

plzz mark me brainliest

8 0
3 years ago
Read 2 more answers
Two numbers that are the same distance from zero on a number line are called what?
tamaranim1 [39]
Those are called opposites
7 0
3 years ago
Read 2 more answers
Nineteen more than a number is less than 42
Lelechka [254]
We are trying to find the number that when added to 19, gives us less than 42. We can set up this simple inequality:

19 + x < 42

Now, subtract 19 from both sides:

x < 23

Our number can be anything less than 23.
4 0
3 years ago
Read 2 more answers
What is total 14.56 plus tip 15% plus tax7%.
Alexandra [31]
Hi,
The total amount is 17.91608
How I got my answer:
100 + tip%/100 * 14.56 = amount with tips
100 + 15/100 * 14.56
115/100 * 14.56
1.15 * 14.56 = 16.744
100 + tax%/100 * amount with tips = total amount
100 + 7/100 * 16.744 = total amount
107/100 * 16.744 
1.07 * 16.744
17.91608 = total amount
Hope this Helps you.

5 0
3 years ago
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