Answer:
+/- 8i
Step-by-step explanation:
x^2 = -64
square root (x^2) = square root of (-64)
x = +/- 8* the square root of (-1)
x = plus or minus 8i
The solution for the given quadratic equation are 8i and -8i.
The given quadratic equation is x²=-64.
What is the complex number?A complex number is the sum of a real number and an imaginary number. A complex number is of the form a + ib and is usually represented by z.
Here, square root on both the sides of an equation
That is, x=√(-64)
Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.
= ±8i
Therefore, the solution for the given quadratic equation are 8i and -8i.
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In(x - 2) – In(x + 2)
Answer:
i think it is in(x-2/2+2) the + on the bottom and the - on top as a fraction:) hope it helps
Step-by-step explanation:
3 yards 2 feet is how many inches
if a sample of 25 students is taken from a population of 179 students the population variance o^2, is the variance of how many students' heights
Answer: 179
Step-by-step explanation:
The population variance cannot be determined solely from a sample, but the sample variance can provide an estimate of it based on the data collected from the sample.
The population variance ) represents the variance of the entire population. In this case, the population consists of 179 students. However, if we take a sample of 25 students from this population, the variance of this sample is called the sample variance
The sample variance ) is used to estimate the population variance ). It is calculated using the following formula:
The population variance cannot be determined solely from a sample, but the sample variance () can provide an estimate of it based on the data collected from the sample.
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is 1,569 divisible by 9
Answer:
Yes the answer is 179 remainder 3
Answer:
no
Step-by-step explanation:
hope this helped!
p.s it would be cool if you gave me brainliest.
What is the side lengths in square feet
Step-by-step explanation:
Since each side of a square is the same, it can simply be the length of one side squared. If a square has one side of 4 inches, the area would be 4 inches times 4 inches, or 16 square inches.
These shapes below are mathematically
Answer:
x=30
Step-by-step explanation:
they are conqruent,
the proportion is 2.5 as we can find that by 20/8
2.5 times 12 is 30
A number is divisible by 10 if and only if it is divisible by 2
true or false? plz helppp
Answer:
false
Step-by-step explanation:
What is the sum?
5 +3 +4 =
Answer:
12
Step-by-step explanation:
5+4 is 9, and nine plus three is twelve
Answer:
12
Step-by-step explanation:
Simple meths
1.
Only one-fourth of Earth’s surface is land, but land constitutes over 99% of the Earth’s actual mass. Which sphere of the Earth does this statement describe?
biosphere
lithosphere
atmosphere
hydrosphere
Answer:
Lithosphere.
Step-by-step explanation:
Lithosphere is known for being the Earth's sphere ehre all rocks and types of land are included. Therefore, if land constitutes over 99% of the Earth's actual mass, then the statement is refering to the Lithosphere.
In this question, you are asked to specify the sphere of the earth described in the sentence
The sphere of the earth described in the sentence is lithosphere.
Lithosphere is the sphere of the earth which consists of land.Biosphere is the portion of the earth which constitutes lives. Living organisms live in this part of the earth.Atmosphere consist of the gaseous part of the earth. Hydrosphere is the portion of the earth that consist of water either fresh or salt waterRead more:
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Toss a thumbtack on a hard surface 50 times. How many times did it land with the point up? What is the approximate probability of landing up?
Answer:
25% because there is 4 side causing it to be 1/4 chance
Step-by-step explanation:
A television with a price of $300 is to be purchased
with an initial payment of $60 and weekly payments
of $30. Which of the following equations can be used
to find the number of weekly payments, w, required
to complete the purchase, assuming there are no
taxes or fees?
Answer:
8 weeks
Step-by-step explanation:
300-60= 240
240/30= 8
a line passes trough the point { 0, -3/2} and has a slope of 1/2. what is the equation of the line?
* awnsers in the picture *
Solutions: x=1.
Hope this helps!
Question 7 of 10
If h(x) = (fºg)(x) and h(x) = Vx+5, find g(x) if f(x) = (x+2.
Answer here
Answer:
g(x) = x + 3
Step-by-step explanation:
A composite function is a function that is written inside another function which means substituting one function into another function.
Ex: (fоg)(x) is a composite function, where x of f(x) is substituted by g(x)
∵ h(x) = (fоg)(x)
∵ [tex]h(x)=\sqrt{x+5}[/tex]
∵ [tex]f(x)=\sqrt{x+2}[/tex]
→ Substitute x of f(x) by g(x)
∴ (fоg)(x) = [tex]\sqrt{g(x)+2}[/tex]
→ Equate (fоg)(x) by h(x)
∴ [tex]\sqrt{g(x)+2}=\sqrt{x+5}[/tex]
→ Cancel the roots from the two sides
∴ g(x) + 2 = x + 5
→ Subtract 2 from both sides
∴ g(x) + 2 - 2 = x + 5 - 2
∴ g(x) = x + 3
What is the number of the parking space covered by the car?
Answer:
87
Step-by-step explanation:
flip the picture upside down.
what is the equivalent of 3-(-6)
Answer:
3-(-6) = 9
Step-by-step explanation:
3-(-6) simplifies to 3 + 6.
We would have to distribute the outside negative into the inside to get rid of the parenthesis. Then, we would add.
[tex]3-(-6)\\\\-1 * -6 = 6\\\\3-(-6)=\boxed{3+6}=9[/tex]
Hope this helps.
Fill in the blanks below.
Find the slope of the line passing through the points (7,-5) and (7, -1).
slope:
Find the slope of the line passing through the points (-7, 6) and (-7,-6).
slope:
Answer:
1. infinity
2. infinity
y and z are whole numbers.
y< 70
Z<_60
Work out the largest possible value of y + z
Answer:
1
Step-by-step explanation:
URRRRRGGGGEEENNNNTTTTT!!!!!!
Step-by-step explanation:
Well you have to find two points on the line like points (0,2) and (2,-2)
Then you do y2-y1/x2-x1
You should be able to know what answer it is now!
Hope this helps <3
This is due in a few hours I WILL MARK BRAINLIEST
Find two numbers if their ratio is 9:11 and their difference is 6.
Answer: 33,27 or __,__. Find out what __ equals.
ANSWER THIS THEN 25 POINTS WILL BE WAITING FOR YOU
Answer:
y=6+27 y=33. Its one of these.
Step-by-step explanation:
The quotient of a number and 2 increased by 8 is -15
pls help! i’ll mark brainlest :)
Answer:
3,1. .........................
Answer:
I believe it is (0,4) I'm not sure though
Step-by-step explanation:
Help PLSSSSSSSSSSSSSSSSS extra points
Answer:
85 messages
Step-by-step explanation:
The system of equations for this is
35 + .10x
18 + .3x
where x = the number of text messages
Usually, you would use substitution or elimination to solve this problem. However, because the answer choices were given, you can just plug in the values.
When you plug in 85, or x = 85, you get 43.5 for both equations because
35 + .10(85) = 43.5 18 + .3(85) = 43.5
Therefore, the answer would be 85 messages becuase both plans will cost the same when you send 85 text messages!
:)
Eight friends divide seven bags of apples equally between them. Enter the division represented by this situation as a fraction.
Answer:
THERE
Step-by-step explanation:
Answer:
Step-by-step explanation:
let's name the bag of apples "[tex]x[/tex]"
they have 7 bags of apples: 7[tex]x[/tex]
then they need to divide it among 8 people: so each person gets [tex]\frac{7x}{5}[/tex] or [tex]\frac{3}{5} x[/tex]
Simplify. .
-(2x – Зу) + 5х + 2 – 3х + Зу + 2
А. 4
В. 4х + 4
С. 6y + 4
D. 4х + бу + 4
Please select the best answer from the choices provided
A
B
ОООО
С
D
Answer:
6y+4
Step-by-step explanation:
-(2x-3y) +5x +2 -3x +3y +2
(-2x -3x +5x) (3y +3y) (2 +2)
0 +6y +4
6y +4
Please help
Write the equation of the line on the graph
Answer:
y = 3x
Step-by-step explanation:
There is a dot at (1,3)
The line also goes through (0,0)
The equation is of the form y = mx
b the y intercept is 0.
All we need to do is solve for m
when x = 1, y = 3
3 = m * 1
m = 3
Answer: y = 3x
Choose the comparison statement that is correct
Answer:
what r the options........
Question 4
In the number shown, one digit is underlined and one digit is circled.
20,000
Which statement about the circled digit is true?
F
Its value is 10 times greater than the value of the underlined digit.
G
Its value is the underlined digit - 10.
H
Its value is 70 times the value of the underlined digit.
J
Its value is the underlined digit = 70.
Answer:
Therefore, the correct option is: Its value is 1/10 the value of the underlined digit.
Note: The question is incomplete. The complete question is given below:
2. In the number shown, one digit is underlined and one digit is circled. Which statement about the circled digit is true?
Its value is 10 times greater than the value of the underlined digit.
Its value is 1/10 the value of the underlined digit.
Its value is 70 times the value of the underlined digit.
Its value is 1/70 the value of the underlined digit.
See attachment below for the number
Step-by-step explanation:
This problem is about the place value of whole numbers.
Step 1: Determining the place value of the numbers
The place value is the value of each digit in a number, be it a whole number or a decimal number.
The number shown is seventy seven thousand (77,000)
The place value of the underlined 7 is 7 ten thousands = 7 * 10000 = 70000
The place value of the circled 7 is 7 thousands = 7 * 1000 = 7000
Step 2: Comparing the numbers
Comparing the circled number and the underlined number:
7000/70000 = 1/10
Therefore, the correct option is: Its value is 1/10 the value of the underlined digit.
PLS HELP I CANT DO THIS
Answer:
The answer would be 5
Step-by-step explanation:
2x2x2=8
Lets use the other 5 since it is already given to us.
so 8x5=40
no we must get 200 with the 40
so 200/40=5
Thus the missing number will be 5
PLEASE MARK AS BRAINLIEST
Find the sum.
(-3.4k-7)+(3k+21)
Please and Thank You :)
Answer:
k=(n+3)/6
Step-by-step explanation:
algebra class but I think im wrong
Find the area under the standard normal curve that lies outside the interval between following two values. Round the answers to at least four decimal places. (a)Find the area under the standard normal curve that lies outside the interval between -1.43 and 1.34.
Answer:
A = 0,16644
Step-by-step explanation:
The area (A₁) under the bell shape curve, from the left tail up to the point ( z score) 1,34 is:
For z (score ) = 1,34 A₁ = 0,9099
The area A₂ from the left tail up to z = -1,43 is
A₂ = 0,07634
Area A₂ is inside area A₁, the area A₃ inside the points - 1,43 and 1,34 is
A₃ = A₁ - A₂
A₃ = 0,9099 - 0,07634
A₃ = 0,83356
Finally area outside the interval - 1, 43 and 1,34 is A ( the area we were looking for) is
A = 1 - A₃
A = 1 - 0,83356
A = 0,16644