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OverLord2011 [107]
4 years ago
13

What is the guess and check method

Mathematics
1 answer:
STatiana [176]4 years ago
8 0
Where you plug in any random number into your equation and see if they equal each other ex: 2=2 
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ABCD is a parallelogram. If AB =3x+4, and CD =4x-1, find the length of AB
RSB [31]
If AB = CD, then 3x+4 is equal to 4x-1

3x + 4 = 4x - 1
Add one to both sides to cancel out.
3x + 5 = 4x
Subtract 3x from both sides to cancel out.
5 = x

Now, substitute the 5 in place of the x in the equation for AB (3x+4)

3(5) + 4
15 + 4
19

Final Answer: B) 19
7 0
4 years ago
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A printing company charges $5.00 for the first 400 pages printed. For each page printed over 400, the customer is charged an add
Vadim26 [7]

Answer:

D

Step-by-step explanation:

Up to 400 pages, the cost is fixed at 5.00 dollars

After 400 pages the cost is 0.01 cents/page

  • It's not A. 400 is the number of pages. It is not a cost.
  • It's not B either. B means that no matter how many pages you print, it's going to cost 5 dollars + the number of pages times 1 cent.
  • C is not the answer. It is really just an answer put it. You pay 1 cent for each page between 400 and what you printed.
  • I think D is the answer, but if you get a negative number, then the cost is 5 dollars
5 0
3 years ago
What is (-7)^2 × (-7)?<br><br> I will mark the Brainliest, thank, and comment!<br><br> Thank you!
belka [17]

Answer:

The answer is -343.

Step-by-step explanation:

If a term doesn't have an exponent, it's considered that the exponent is 1 (so basically, (-7)² x (-7)^1.

Multiply the terms with the same base (by adding the exponents - (-7)²+1<- (as the exponential value) (couldn't find the sign so sorry.)

Add the numbers: (-7)³

A negative base raised to an odd power equals a negative: -7³

Write the problem out: -(7 x 7 x 7).

Multiply: -343

3 0
3 years ago
HAPPY EARTH DAY GUYS! :)
Alecsey [184]

Answer:

THANK YOU! YOU TOO! :)

Step-by-step explanation:

Have a nice dayyyyyy <3

6 0
3 years ago
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Starting at 1:00 pm, the temperature changes -4 degrees Fahrenheit per hour. Write and solve an equation to find how many hours
vesna_86 [32]

Answer:

im guessing it will take 3 hours to get to -1 F

Step-by-step explanation:

4 0
3 years ago
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