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nadezda [96]
3 years ago
15

Twice a number subtracted from four times a number, added to 15.

Mathematics
1 answer:
galina1969 [7]3 years ago
3 0
For twice a number we can use the variable x
For four times a number we can use the variable c

4c - 2x + 15

I believe this is correct although I'm not 100% sure
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Help me again pls :D sorry for the bother
matrenka [14]

Answer:

A

Step-by-step explanation:

2x2.5x3= 15

2x2.5x4.5=22.5

2.5x3x4=30

2.5x2x4=20

6 0
3 years ago
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Quick help: Explain how to solve the following system of equations. What is the solution to the system?
romanna [79]
-3x - 4y - 2z = 0
x + 3y + 2z = 1

-2x - y = 1

-4x - 4y - 2z = 10
3x + 4y +2z= 0

-x = 10. x = -10

-2(-10) - y = 1
20 - y = 1
-y = -19
y = 19

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47 + 2z = 1
2z = -46
z= -23

check: 2(-10)+2(19)-23=-5
-20+38-23=-5
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7 0
3 years ago
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You pick one card from a standard deck of 52 cards. What is the probability that the card will be a two?
Natali [406]

Answer:

4 out of 52 or simplified 2 out of 26

Step-by-step explanation:

There are 4 suites of cards, spades, hearts, clubs, diamonds and there is one card for two in each suite, so we therefore know that the probability of picking a two out of a 52 card deck will be four out of 52 or the simplified answer would be 2 out of 26. Hope this helps, have a great day!

3 0
3 years ago
The graph shown matches which quadratic equation?
Tatiana [17]
I think it's D but I'm not %100 sure
4 0
3 years ago
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mr_godi [17]
For this unit conversion problem, you'll need to know:

1 m = 100 cm

Now let's convert with this conversion ratio!

0.03 \frac{W}{m C} \times \frac{1 m}{100 cm} = 0.003 \frac{W}{cm C}
6 0
3 years ago
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