If 2x - 1 = 6, what is the value of 4x^2 - 1
Answers
Answer: 48
Step-by-step explanation:
2x - 1 = 6
Add 1 to both sides of the equation , we have:
2x = 7
divide through by 2
x = 7/2
The value of - 1 will be calculated by substituting in the value of x , that is
- 1 = 4(
- 1
= 4() - 1
= 49 - 1
= 48
Answer:
48
Step-by-step explanation:
2x-1=6
2x=6+1
2x=7
x=7/2
------------
4x^2-1
4(7/2)^2-1
4(49/4)-1
49-1
48
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O
x could be – 3
0x could be - 1
x cannot be - 3
x cannot be - 5
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Answers
Based on the inequality that is represented by the number line, the true statement is: A. x could be -3.
What is a number line?
A number line can be defined as a type of graph with a graduated straight line which consists of numerical values (positive and negative numbers) that are placed at equal intervals along its length.
From the number line, x is less than or equal (≤) negative three (-3).
x ≤ -3
Therefore, we can deduce the following points:
- x could be negative three (-3).
- x could be negative five (-5).
- x cannot negative one (-1).
Read more on number line here: brainly.com/question/24644930
Answer:
Step-by-step explanation:
10 cups
2/8=10/x
2x=80
X=40cups
40 cups
2/8=40/x
2x=320
X=160
8 cups
2/8=8/x
2x=64
X=32
Answers
Answers
a. Okay, so you multiply the 4.7 and 2.9 together, and then add the exponents
13.63 * 10^10
But we are not done. There can only be one digit in front of the decimal point. So, you move the 13.63 back one place so 1.363. But we have to do this to both sides, so the answer is 1.363 * 10^11.
b. Now you divide the 5.8 and 2, and subtract the exponents.
2.9 * 10^-5
The negative exponent is fine in this case if you were wondering.
c. Expand the scientific notation to 1500, then add the 2491 and then put that in scientific notation is what I would do. You can also express 2491 in scientific notation and add them. Either way you will get 3.991 * 10^3
d. Same thing here except with subtraction. The answer is 6.5 * 10^-4.
This was a little long, sorry. Let me know if you need further explanation. I hope this helps.
Answers
Answers
Multiply.
20*x=190
But here is the thing.
It can only go in "9" times because if we did 20*9=180, we cant add 20 more or we go over.
Therefore 20 can only go in 190, 9 times.
Answers
Answer:
P = 4*a or P = a + a + a + a
Step-by-step explanation:
Given that each side has a length of units, assume the length is a.
The perimeter of a square (quadrilateral) is given by:
P = 4*a or P = a + a + a + a
Example 1: Find the area and perimeter of the square whose side length is 2 meters.
Solution:
Given that:
a = 4m
Perimeter of the square = 4 × 2 = 8 m
Hope it will find you well.
Answer:
i would come to guess it to be: 2+4=x divided by y (y) = each side
(x) = perimeter
Step-by-step explanation:
I hope thas enough for you to work off of.