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atroni [7]
3 years ago
8

The sum of two numbers is 8. If three times the first number is equal to the second number, find the numbers.

Mathematics
1 answer:
MissTica3 years ago
5 0

Step-by-step explanation:

Hi there,

The sum of two numbers is 8.

x + y = 8

If three times the first number

is equal to the second number.

3x = y

Replace the y in top equation with 3x

x + 3x = 8

4x = 8

x = 2

Substitute x = 2 in first equation

x + y = 8

2 + y = 8

y = 8 - 2

y = 6

{2,6}

Hope this helps :-)

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(3n-2)(4n+1)<br> how do i solve this by factoring?
Anni [7]

Answer:

12n^2-5n-2

The expression (3n-2)(4n+1) can be factored with the Distributive Property. It cannot be factored with a Least Common Multiple (LCM), for instance, because the terms within each set of parentheses are completely simplified.

Step-by-step explanation:

Part I

.1. (3n-2)(4n+1)\\2. F.O.I.L.: 12n^2+3n-8n-2\\3. Simplify: 12n^2-5n-2\\

Good luck to you!

8 0
2 years ago
Please help me, I don’t know how to solve for x on this one
Brums [2.3K]

Use trigonometry to solve for x.

The tangent function is defined to be opposite side divided by the adjacent side.

tan(78) = x/10

tan(78)(10) = x

47.0463010948 = x

We now round off to two decimal places. In other words, we round off to the nearest tenths.

47.05 = x

Done!

5 0
2 years ago
It’s only 10 points but it’s all i got (:
weqwewe [10]

Answer:

Thx a lot

Step-by-step explanation:

4 0
3 years ago
I am weighed on scales which have a 10% error, that is, the scales show me 10% heavier than my real weight. If I actually weigh
stiks02 [169]
Remember you said the scale shows you 10% heavier.

So that's an increase of 10%

So value = 10% + 100% = 110%

So scale would show  110% of 82

110% of 82

= (110/100)  * 82

= 1.1 * 82

= 90.2

OR

We can simply find 10% of 82 and add it to the original 82.

10% of 82

(10/100) * 82

0.1 * 82 = 8.2

8.2 + 82 = 90.2    Same answer as before.

So scale shows 90.2 kg. 
4 0
3 years ago
Read 2 more answers
Resultado de esta cuenta Explicada cuenta completa:<br><br>(6+3)²=​
Mumz [18]

81 is the correct answer

hope it helps you have a good day

7 0
3 years ago
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