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ddd [48]
2 years ago
11

If i was asked to think of number and multiply it by 2 i could write this algebraically as 2x write the following algebraically

using x as your unknown
i think of a number multiply it by 3 and add 1 to the result
Mathematics
2 answers:
dlinn [17]2 years ago
8 0

Answer:

3x + 1

Step-by-step explanation:

sergiy2304 [10]2 years ago
4 0

Answer:

3x+1

Step-by-step explanation:

Since taking a number and multiplying it by 2 is the same as 2x, then taking a number, multiplying by 3, and adding 1 to the result would be 3x+1.

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X^2 -11x +30 in factored form
AlladinOne [14]

Answer:

(x-5)(x-6)

Step-by-step explanation:

It would be the answer above. Hope this helps!

5 0
3 years ago
Isabel found 54 coins at the bottom of her backpack. when she looked, she noticed they were only nickels and dimes. Isabel count
goblinko [34]

She had 23 nickles and 31 dimes

Step-by-step explanation:

The given is:

  • Isabel found 54 coins at the bottom of her backpack
  • She noticed they were only nickels and dimes
  • Isabel counted the coins and they totaled $4.25

We need to find how many nickels and dimes she had

Assume that the number of nickels is x and the number of dimes is y

∵ Isabel had 54 coins

∵ The number of nickels is x

∵ The number of dimes is y

∴ x + y = 54 ⇒ (1)

∵ 1 nickle = 5 cents

∵ 1 dime = 10 cents

∵ The coins totaled $4.25

- Change the dollars to cents

∵ 1 dollar = 100 cents

∴ $4.25 = 4.25 × 100 = 425 cents

- Multiply the number of nickles by 5 and the number of dimes

  by 10, add the two products and equate the sum by 425

∴ 5x + 10y = 425 ⇒ (2)

Now we have a system of equations to solve it

Multiply equation (1) by -10 to eliminate y

∵ -10x - 10y = -540 ⇒ (3)

- Add equations (2) and (3)

∴ -5x = -155

- Divide both sides by -5

∴ x = 23

Substitute the value of x in equation (1) to find y

∵ 23 + y = 54

- Subtract 23 from both sides

∴ y = 31

She had 23 nickles and 31 dimes

Learn more:

You can learn more about the system of equations in brainly.com/question/6075514

#LearnwithBrainly

6 0
3 years ago
6 of 8
jekas [21]

Answer:

1.7x25=42.5

70-4.5=27.5

her loss will be£27.5

3 0
3 years ago
The tree diagram represents an experiment consisting of two trials. ​
Afina-wow [57]

Answer:

.26

P(C) = .6*.3   + .4 *.2

      = .18+.08

     = .26

Step-by-step explanation:

4 0
2 years ago
Which equation represents a nonlinear function?
Grace [21]

Answer:

B and C

Step-by-step explanation:

Linear functions are written in the format y=mx+b

If a function has an exponent it is nonlinear

6 0
3 years ago
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