Answers
Answer:
A) x = 3 or -1
B) x = -7
C)x = -7
Step-by-step explanation:
A) x² + 2x + 1 = 2x² - 2
Rearranging, we have;
2x² - x² - 2x - 2 - 1 = 0
x² - 2x - 3 = 0
Using quadratic formula, we have;
x = [-(-2) ± √((-2)² - 4(1 × -3))]/(2 × 1)
x = (2 ± √16)/2
x = (2 + 4)/2 or (2 - 4)/2
x = 6/2 or -2/2
x = 3 or -1
B) ((x + 2)/3) - 2/15 = (x - 2)/5
Multiply through by 15 to get;
5(x + 2) - 2 = 3(x - 2)
5x + 10 - 2 = 3x - 6
5x - 3x = -6 - 10 + 2
2x = -14
x = -14/2
x = -7
C) log(2x + 3) = 2log x
From log derivations, 2 log x is same as log x²
Thus;
log(2x + 3) = logx²
Log will cancel out to give;
2x + 3 = x²
x² - 2x - 3 = 0
Using quadratic formula, we have;
x = [-(-2) ± √((-2)² - 4(1 × -3))]/(2 × 1)
x = (2 ± √16)/2
x = (2 + 4)/2 or (2 - 4)/2
x = 6/2 or -2/2
x = 3 or -1
Related Questions
Find the value of x in the following diagram.
Answers
Answer:
x = 3.5
Step-by-step explanation:
By definition, congruent chords are equidistant from the center of a circle. We are given two congruent chords and their distances(the lines perpendicular), meaning those distances must be equal. We set set up an equation to model the situation:
x + 8 = 3x + 1
8 = 2x + 1
2x = 7
x = 3.5
В.
Julie is making a banner shaped like a
parallelogram with a base of 8. feet and
a height of 6 feet. How many square feet
of material will Julie need for the banner?
Answers
please help me out with this problem. will give thanks!
Answers
Answer:
It is an isosceles triangle.
Step-by-step explanation:
sum of angles of triangle = 180
since it is isosceles two angles will be same. let it be x.
x + x + 22 = 180
2x = 180 - 22
2x = 158
x = 79°
Find y!!
(Secant tangent angles )
Helpppp
Answers
Answer:
Probably 95*
Step-by-step explanation:
If you look at the lines, the angle with Y looks equal to the bottom 95* angle.
Find the value of x.l
Answers
Answer:
The value of x is 28°
Step-by-step explanation:
2x + 1 and 33° together forms 90° angle.
So, we need to find the angle at the 2x + 1.
--> 90° - 33°
= 57°
So, 2x + 1 gives 57°.
So, to find x :-
2x + 1 = 57°
2x = 57 - 1
2x = 56
x = [tex]\frac{56}{2}[/tex]
x = 28
Can you help me how to do it
Tell me the answer in the equation
Answers
Which of the following poems have to rhyme?
Sonnet
Limerick
Haiku
Cinquain
Answers
Answer:
a
Step-by-step explanation:
2 - x = x - 8
ayudaaa
porfavor
Answers
Answer:
x=5
Step-by-step explanation:
2 - x = x - 8
- x = x - 8 - 2 (subtract 2 from both sides)
- x = x - 10 (combine like terms)
- 2x = - 10 (subtract x from both sides)
x = 5 (divide each side by -2).
Answer:
x = 5
Step-by-step explanation:
2 - x = x - 8
- x + 2 = x - 8
- x + 2 - 2 = x - 8 - 2
- x = x - 10
- x - x = x - x - 10
- 2x = - 10
- 2x ÷ - 2 = - 10 ÷ - 2
x = 5
what is the lcm of 5,3 and 5
Answers
Answer:
the LCM of those would be 15.
how to find area of a square room if it's length is 5cm
Answers
Answer:
150 cm²
Step-by-step explanation:
Since the room is square, assuming that it is a cube, the area will be 6s², where s is the side length.
Given a side length of 5cm, the area is
6(5)² = 6cm × 25cm = 150cm²
i’ve asked so many times plz hell
Answers
Step-by-step explanation:
Yes, Junior
5/(5+9)
5/14
0.36
Yes, Senior
9/(5+9)
9/14
0.64
No, Junior
4/(4+7)
4/11
0.36
No, Senior
7/(7+4)
7/11
0.64
Help me pls pls pls pls
Answers
10
2 of 10
Find the area of a circle with radius,
r
= 5.59m.
Give your answer rounded to 2 DP.
Answers
Answer:
area = 98.12 m²
Step-by-step explanation:
area = πr² = (3.14)(5.59²) = 98.12 m²
What is the temperature increase in degrees Fahrenheit that is equivalent to a temperature increase of 10°C?
Answers
Answer: [tex]50^{\circ}F[/tex]
Step-by-step explanation:
Given
Temperature increase is [tex]10^{\circ}C[/tex]
We know, conversion scale of Celcius to Fahrenheit is
[tex]0^{\circ}C\times \dfrac{9}{5}+32=32^{\circ}F[/tex]
for [tex]10^{\circ}C[/tex], it is
[tex]\Rightarrow 10\times \dfrac{9}{5}+32\\\\\Rightarrow 18+32=50^{\circ}F[/tex]
It is equivalent to [tex]50^{\circ}F[/tex]
How many different meal combinations can she make in all
Answers
Rewrite the function by completing the square.
f(x) = x2 – 2x – 95
Answers
solving by completing the square: f(x) = ( x - 1 ) ^2 - 96,
find the quotient:
1 divided by 13/7
Answers
Answer:
7/13
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
we have to multiply 1 by the reciprocal of 13/7
1 x 7/13 = 7/13
becuase a number multiply by 1 gives as result the number itself
PLEASE HELP ME IT' S FOR TODAY!!!
Answers
Answer:
x=55
Step-by-step explanation:
125+125=250
250+2x=360
2x=110
x=55
Answer:
55
Step-by-step explanation:
There are many ways to solve this problem; however, I used the one I believe to be the fastest and easiest, but you can still use a different way.
I solved this by using the fact that the green angle (m<125) and the red angle (x) make a straight line. All straight lines equal 180 degrees; therefore, this line must equal 125+x=180. Then, you can subtract 125 from both sides of the equation. That leaves x=55.
A sphere with a radius of 6 pi.What is the surface area of the sphere 36Pi3 square units 114Pi2 square units 144Pi3 square units 576Pi4 square units
Answers
Answer:
6×36=216.I hope the answer is correct. I will be happy when I get 5 pointsAnswer:
Step-by-step explanation:
HELP WILL GIVE BRAINLIEST
Which is equivalent to the expression -8i^2 + 3
A. -5
B. 11
C. 3 - 8i
D. 3 + 8i
Answers
Answer:
ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
Step-by-step explanation:ccccccccccccccccccccccccccccccccccccc
ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
ILL MARK BRAINIEST IF YOU CAN DO THIS RIGHT!!!
Answers
Answer: Slope: -1/2
Step-by-step explanation: To find slope take 2 points that lie on the line and use this formula to solve: I will use (0, -2) and (2, -3) to solve
↑ ↑ ↑ ↑
y2 - y1 x1 y1 x2 y2
-----------
x2 - x1
So, for this question, substitute the x and y values from the points above to solve.
-3 - (-2)
----------- = - 1/2
2 - 0
Hope this helped. :)
Which alternative is the NEGATIVE reciprocal of -4?*
A. - 4
B. -1/4
C. 1/4
D.4
Answers
I NEED THE ANSWER IN THE NEXT MINUTE
Answers
Step-by-step explanation:
the area of a circle: pi r^2
area of a rectangle: L x W
so youd write and solve 12 x 12 - pi (12/2)^2
Solve for an angle in right triangles
Answers
Answer:
26°
Step-by-step explanation:
use the inverse trig functions (in this case, sin^-1)
sin^-1(4/9)
Answer:
26.39
Step-by-step explanation:
khan
How far will a ball roll if it travels 12m/s
for 3 seconds?
Answers
The ball will roll 36 meters for 3 seconds
I need help plz this is hard
Answers
Answer:
(1,3)(5,-5)(3,-1)
Step-by-step explanation:
find the value of X need help soonnn
Answers
12^2 + 8^2 = C^2
144 + 64 = C^2
208= C^2
Then,
208 = 2 × 2 × 2 × 2 × 13.
√208 = √( 2 × 2 × 2 × 2 × 13)
√208 = √(4 × 4 × 13)
√208 = 4√13.
PLS HELP I WILL GIVE OUT BRAINILEST!!!!!
Answers
Which expression is equivalent to (1.009 1/12) 12t?
A. 1.000712t
B. 1.007512t C.1.009012t
D 1.113512t
Answers
Answer:
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Step-by-step explanation:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
Let A = 2x + 5 and B = x2 - 4x – 1
Find A - B
PLEASE HELP
Answers
First, combine your like terms, 2x, 2x, and -4x, which equals to 0x or x. Then, you add the regular numbers together, +5 and -1, which equals to 4. Now that we have our numbers, our full answer will be x-4.