B + 7.5 = 4.8
-7.5 -7.5
-----------------------
b = -2.7
Hope this helps!!!!!
You can also check your answer by doing replacing the number with the variable ( don't just write the anwser just because you know it, since its pre algebra you have to do it algebraically like above)
-2.7 + 7.5 = 4.8
Hope it helps!
Answer: #20, x = 3
#21, x = 1/2
Step-by-step explanation:
#20) x + 4 + x + 2+ x + 5 = x + 3 +x+3+x+1+x+1
3x + 11 = 4x + 8
<u>-3x -3x</u>
11= x + 8
<u> - 8 - 8</u>
3 = x
#21) 12x(5) = 6x + 9 + x + 10 + x + 7
60x =8x + 26
<u> -8x -8x</u>
52x = 26
divide both sides by 52
x = 1/2
Step-by-step explanation:
k = √(49 - 12√5)
= √(45 + 4 - 2 √180)
= √45 - √4
= 3 √5 - 2.
<em>So, k + 2 = 3 √5 - 2 + 2 = 3 √5.</em>
Answer:
Assuming you want the answer in slope-intercept form, it’s <u>y = -5x + 11</u>
Step-by-step explanation:
So we have to first use point-slope form, y - y1 = m (x - x1)
If we plug the numbers in we get...
y + 4 = -5 (x - 3) (take out parenthesis)
y + 4 = -5x + 15 (now subtract 4 from 15)
<u>y = -5x + 11</u>
I think this is right
Answer:
The answer is True. Hope this helps. :)
Step-by-step explanation:
( 4 x 3 ) 3 + 5 - 10 = 4 x 3 + 5 - 10
- (4x3) = 12
- 3 + 5 = 8
- 4 x 3 = 12
- 3 + 5 = 8
This is basically an example of PEMDAS.
Perimeter
Equation
Multiplication
Division
Addition
Subtraction
(Multiplication is ahead of Addition, you multiply first)