I NEED HELP FAST. DUE TOMORROW
Answers
so 8x^2+3x=-7
add 7 to both sides
8x^2+3x+7=0
put into the quadratic formula
8x^2+3x+7=0
ax^2+bx+c=0
x=((-b+-√(b^2-4ac))/(2a))
x=((-3+-√(3^2-4(8)(7)))/(2(8)))
solve inside of square root first
3^2-4(8)(7)=pemdas 9-4(8)(7)=9-224=-215
so -3+-√-215
we know that square root of negative is not real and is immaginary so i must be involved
√-1=i so
-215=i√215
so the answer is A
CONTINUATION
i√215=i(15)=15i
-3+-15i means -3+ or minus 15i
then solve for botom part
2(8)=16
(-3+-15i)/16
so the answers are (-3+15i)/16 and (-3-15i)/16
Related Questions
The area of a square is found by squaring one of its sides, (A = s2). A certain square has an area of z2 + 18z + 81. Factor the trinomial to find a side of the square.a. side = z + 27 b. side = z + 18 c. side = z + 9
What number is 20% of 700
What is 165,023,912 rounded to the nearest 100 million
3. The surface area of the sphere is 30 m2. Find the radius of the sphere.
Answers
Answer:
m=4
Step-by-step explanation:
−9(m+3)+14=−49
Step 1: Simplify both sides of the equation.
−9(m+3)+14=−49
(−9)(m)+(−9)(3)+14=−49(Distribute)
−9m+−27+14=−49
(−9m)+(−27+14)=−49(Combine Like Terms)
−9m+−13=−49
−9m−13=−49
Step 2: Add 13 to both sides.
−9m−13+13=−49+13
−9m=−36
Step 3: Divide both sides by -9.
−9m
−9
=
−36
−9
m=4
Answers
(-3, y ) , x = -3
y = 3 · ( -3 )
y = - 9
Thank you.
Answer:
The value of y=-9
Step-by-step explanation:
If (-3, y) lies on the graph of y = 3x
If any point satisfy the equation or graph. We get true for that point.
Now, we substitute the point into equation and left side is equivalent to right side.
Put x=-3 and to solve for y
y=3(-3)
y=-9
If x=-3 then y=-9
Hence, The value of y=-9
Answers
Answers
Answer:
45 kilogram = 99.208 pound.
Step-by-step explanation:
Given : If an item weighs 45 kilograms,
To find : what is its weight in pounds.
Solution : We have given that
Weighs = 45 kilograms.
1 kilogram = 2.20462 pound .
45 kilogram = 2.20462 * 45.
45 kilogram = 99.208 pound .
Therefore, 45 kilogram = 99.208 pound.
The weight of 45 kg is equal to 99.21 pounds.
To convert 45 kilograms to pounds,
We have to use a conversion factor.
The conversion factor is 2.20462 pounds per kilogram.
Therefore,
To find the weight of an item in pounds,
We have to multiply its weight in kilograms by 2.20462.
So,
Multiplying 45 kilograms by 2.20462 pounds per kilogram
We get a weight of approximately 99.21 pounds.
It's important to note that kilograms and pounds are both units of mass, but they are used in different parts of the world.
Kilograms are the standard unit of mass in the metric system,
while pounds are commonly used in the United States and the United Kingdom.
Hence,
An item that weighs 45 kilograms has a weight of approximately 99.21 pounds.
To learn more about the measurement unit visit:
#SPJ6
Answers
(7-5)= 2
if is times 2 is 32
if is plus 2 is 15
if is minus 2 is 11
and if is divided by 2 is 6.5
(I'm saying all that because you didn't put any symbol beside the number 2)
45
50
62
69
Answers
The formula to calculate a minimum sample size is as follows:
n = [z*s/E]^2
Where n is the sample size, z is the z value for the level of confidence chosen, s is the estimated standard deviation and E is the allowable error.
I hope my answer has come to your help. God bless and have a nice day ahead!