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damaskus [11]
3 years ago
12

The sum of two numbers is 18 and their difference is 8

Mathematics
2 answers:
Volgvan3 years ago
8 0

Answer:

13 and 5

Step-by-step explanation:

x+y=18

x-y=8

_____

2x=26

x=13

So the first number must be 13

13+y=18

y=5

And the second number must be 5

Diano4ka-milaya [45]3 years ago
7 0

Answer:

13 and 5

Step-by-step explanation:

13 and 5 because 13-5=8 and the difference is 8 so thats your answer

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8X +6Y+4<br> Y=-3X+9<br> using substitution what numbers are the variables X and Y
Svetach [21]

Answer:

(5,6)

Step-by-step explanation:

8X +6Y=4

Y=-3X+9

Substitute the second equation into the first.  Every place you see y put -3x+9)

8x +6(-3x+9)=4

Distribute

8x-18x +54 = 4

Combine like terms

-10x +54 = 5

Subtract 54 from each side

-10x +54-54=4-54

-10x = -50

Divide by -10

-10x/-10 = -50/-10

x= 5

Now we need to find y

y = -3x+9

y = -3(5) +9

y = -15+9

y= 6

(5,6)

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3 years ago
An atom has a charge of +1. If the atom's nucleus contains 23 protons, the atom must have
Ymorist [56]
If an atom has a let's say, +2 charge, it will mean that the atom has two more protons than electrons. Protons have +1 charges and electrons have -1 charges. So, said this, if you had one more proton than an electron, it would be a -1 charge. Because of this, if an atom had a +1 charge, it would have to have one more proton than electrons. So, the answer could be "the atom must have 22 electrons" but, the question is sort of vague? It could really be anything.
4 0
3 years ago
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I need to know the dimensions to solve

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2 years ago
The frequency table shows the scores from rolling a dice.
bulgar [2K]

Answer:

3, 8

Step-by-step explanation:

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Simplify and Show all of your work please!
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Answer:

\Huge \boxed{\mathrm{9}}

Step-by-step explanation:

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Dividing first.

\Rightarrow \displaystyle \frac{9 *  3}{5-2}

Multiplying and subtracting.

\Rightarrow \displaystyle \frac{27}{3}

Division.

\Rightarrow 9

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3 years ago
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