Answer:
7 + 5i
Step-by-step explanation:
What is the square root of 25? Start by thinking about that.
Well, it's 5.
But because the 25 isn't positive, it's negative.
The square is 5i.
Then, you get 7 + 5i.
That can't be simplified any more, so that's your final equation.
True or false. The solution to an equation in two variables such as y = 3x - 9 is the value of x that makes the equation true.
ok wait i think you are in my math class lol... this is on my quiz i just took
Please answer this i have 3 minutes left before its due
Answer:
Step-by-step explanation:
Y=-1/7x-30/7
-2/3y-3/4=5
What is the answer i need to show my work please
Answer:
y= -69/8 (negative 69 over 8)
Step-by-step explanation:
First, you have to simplify both sides of the equation:
[tex]-2/3y+ -3/4 =5[/tex]
Second, add 3/4 to both sides:
-2/3y +-3/4 + 3/4=5 +3/4
-2/3y= 23/4
Next, multiply both sides by 3/(-2) (3 over -2)
(3/-2)*(-2/3y)= (3/-2) * (23/4)
y= -69/8
A company that makes hair-care products had 5,000 people try a new shampoo. Of the 5,000 people, 20 had a mild allergic reaction. What percent of the people had a mild allergic reaction?
Answer:
0.4%
Step-by-step explanation:
(20/5000)x100
2/5=.4%
The associative property works with expressions that use
А
division and subtraction.
B
addition and subtraction.
C
multiplication and division.
D
multiplication and addition.
HURRY!! THIS ASSIGNMENT IS DUE IN 5MIN!!! THANK YOU!!!!!!
Paula leaves home driving 40 miles per hour. One hour
later, her brother Dan leaves home, driving in the same direction at a speed of 50 miles per hour. How long will it take Dan to catch up to Paula?
i need help with this geometry
Answer:
c
Step-by-step explanation:
use point slope form y-y1 = m(x-x1)
m = -1/2 because that would be perpendicular
then you plug in the numbers y-6= -1/2(x-4)
then solve for y so i will be in y=mx+b
A train travels 540 miles in 12 hours.
Complete the table to represent the situation.
given the equation y=23x,whats the value of x if y=100
Answer: 4.3478 or 100/23
Step-by-step explanation:
Set the y values equal to each other since they are the same unknown (x). You end up with 100=23x, solve for x. Move the 23 over to the other side by using division. x=100/23. If you need it in decimal form, 100÷23=4.347826087
Answer:
4.3=x
Step-by-step explanation: y=23x
substitute the variable y to 100. Now the equation looks like this 100=23x. Your next step is to get get x by itself, so you would divide 23 on both sides. That would cancel out the 23 x. The only thing you have to do now is 100 divided by 23 and that would be 4.3 and a whole bunch of number so you just round it to the nearest tenth. You answer would be 4.3.
Which of the following conjectures is false?
a
The sum of two even numbers is even.
b
The product of two even numbers is even.
c
The sum of two odd numbers is odd.
d
The product of two odd numbers is odd.
Is the relationship proportional? Explain.
Answer:
What relationship??
Step-by-step explanation:
Steve stayed after school for extra activities 55% of the 180 school days this year. How many days did Steve stay after school?
Answer:
11/20 or 99/180 days
Step-by-step explanation:
55/100 converted to ?/180
180/100=1.8
so you would do the same on the numerator which is 55*1.8=99
99/180= 33/60=11/20
Answer:
125
Step-by-step explanation:
In Akutan, Alaska, men are 77% of the population. It is also known 11.3% of
Akutan males smoke cigars while 2.1% of Akutan females smoke cigars. One
member of the population is selected at random for a survey involving cell
phone carriers
Express the cigar smoking data as conditional probabilities.
Find the
probability that the selected subject does not smoke cigars given that the
subject is male
Answer:
Kindly check explanation
Step-by-step explanation:
Given the following :
Proportion of males, P(M) = 77% = 0.77
Proportion of females = ( 1 - proportion of males) = (1 - 0.77) = 0.23
Percentage of males who smoke cigar = 11.3% = 0.113
Percentage of female who smoke cigar = 2.1% = 0.021
Expressing cigar smoking Data as conditional probability :
P(male and smoking) = P(M n C) = 0.113
P(Female and smoking) = P(F n C) = 0.021
Probability of smoking cigar Given the person is a male :
P(C | M) = P(M n C) / P(M)
Probability of smoking cigar Given person is a female :
P(C | F) = P(F n C) / P(F)
Find the probability that the selected subject does not smoke cigars given that the subject is male?
No smoking Given Male = 1 - P(C | M)
P(C | M) = P(M n C) / P(M)
P(C | M) = 0.113 / 0.77
P(C | M) = 0.1467
1 - P(C | M)
1 - 0.1467
= 0.8533
#30 Tickets to a school play cost $2 if bought in advance and $3 at the door. By selling all 400 tickets, $1,030 was
collected. Let x represent the number of tickets sold at the door.
In terms of x. how many tickets were sold in advance?
Answer:
170 tickets were sold in advance
Step-by-step explanation:
Let x represent the = number of tickets sold at the door.
Let y represent the = number of tickets sold in advance
Tickets to a school play cost $2 if bought in advance and $3 at the door. By selling all 400 tickets, $1,030 was
collected.
Hence, we have two equations
x + y = 400 tickets
$3 × x + $2 × y = $1,030
x + y = 400.... Equation 1
x = 400 - y
3x + 2y = 1030........ Equation 2
Substitute 400 - y for x in Equation 2
3(400 - y) + 2y = 1030
1200 - 3y + 2y = 1030
Collect like terms
-y = 1030 -1200
-y = -170
y = 170
Since y represent the number of tickets sold in advance, therefore, 170 tickets were sold in advance.
Which number is not in scientific notation?
A. 7.8 • 10^6
B. 1.45 • 10^-7
C. 0.33 • 10^-15
D. 9• 10^19
Answer:
C is not in scientific notation
Step-by-step explanation:
Answer:
c's not
Step-by-step explanation:
Struggling with geometry
Answer:
43 degrees. b and the other angle being compared too are vertical angles- vertical angles are AND have to be identical to each other.
What is the solution to the equation –5w + 3 = 4w – 6?
Answer:
-2=2
Step-by-step explanation:
Answer:
w = 3
Step-by-step explanation:
-5w + 3 = 4w - 6
were going to get the variable and the numbers on different sides
-5w + 3 - 3 = -5w
4w - 6 - 4w = -6
-5w + 4w = -1w or -w
-6 + 3 = -3
-w = -3
and since there're both negatives you can just take that away and you get
w = 3
The midpoint of AB is M(0, -3). If the coordinates of A are (2, 1), what are the
coordinates of B?
Answer:
(-2,-7)
Step-by-step explanation:
Write rational number -3/8 as the quotient of two integers in two different ways I think the answer is
3/-8 and -3/8
Answer:
sor
Step-by-step explanation:
Solve each quadratic equation by completing the square.
6x2 – 28x = - 16
Answer:
There is no real solutionStep-by-step explanation:
[tex]6x^2-28x = - 16\\\\6x^2-28x + 16=0\\\\3x^2-7x+8=0\\\\9x^2-21x+24=0\\\\(3x)^2-2\cdot3x\cdot\frac72+(\frac72)^2-(\frac72)^2+24=0\\\\(3x-\frac72)^2-\frac{49}4+24=0\\\\(3x-\frac72)^2-12\frac{1}4+24=0\\\\(3x-\frac72)^2+12\frac{3}4=0\\\\(3x-\frac72)^2=-12\frac{3}4[/tex]
A train travels 250 miles in 5 hours. At this rate, how many hours would it take for the train to
travel 750 miles?
Answer:
15 hours
Step-by-step explanation:
What value of x will make the equation true? 1/4x - 5 = 2
Answer:
28
Step-by-step explanation:
Step 1:
1/4x - 5 = 2 Equation
Step 2:
1/4x = 7 Add 7 on both sides
Step 3:
x = 7 ÷ 1/4 Divide
Answer:
x = 28
Hope This Helps :)
Answer:
28
Step-by-step explanation:
Add 5 to each side, so it now looks like this: 1/4x = 7Divide each side by 1/4 to cancel out the 1/4 next to x. It should now look like this: x = 28I hope this helps!
help please please please please please please please please
Question 1= $7,620
Question 2 (a) $3,211
Question 2 (b) $9,828
When an article is sold at a discount of 10 %, a profit of Rs 8 is earned. If the same
article is sold without allowing a discount, there will be a profit of Rs 20. Find the cost price of the article.
Answer:
Market Price = MP
Cost Price = CP
P1 = (MP - 10%) - CP = Rs8
- CP = Rs8 - 0.90% MP
CP = 0.90 MP - Rs8
P2 = MP - CP = Rs20
- CP = Rs20 -MP
CP = MP - Rs20
0.90 MP - Rs8 = MP - Rs20
- 0.10% MP = - Rs12
0.10% MP = Rs 12
MP = Rs120p
CP = MP - Rs20 = Rs120 - Rs20 = Rs100.
The cost price of the item is Rs100.
Step-by-step explanation:
Hope this helps u
Crown me as brainliest:)
In the given figure AB is parallel to CD then value of x is?
Solve each equation.
7(1 +4n) - 5=-38 + 8n
Answer:
B) n=-2
Step-by-step explanation:
First, distribute.
7(1+4n)-5=-38+8n
7+28n-5=-38+8n
Combine like terms.
2+28n=-38+8n
To make solving the equation easier, subtract 8n first, so there isn't a negative variable.
2+28n=-38+8n
-8n -8n
2+20n=-38
Subtract 2 on both sides.
2+20n=-38
-2 -2
20n=-40
Divide by 20 on both sides.
20n=-40
/20 /20
n=-2
Hope this helps!! Have a wonderful day :3
Solve the equation f(x)= g(x) algebraically.
f (x)= In e2x+2
g(x)= 3x - 3
A parent pushes a single child on a swing. Suppose two children now sit on the same swing, and the parent pushes with the same force.
According to Newton's Second Law of Motion, what is the result?
A. mass decreases, acceleration increases
B. mass decreases, acceleration decreases
C. mass increases, acceleration increases
D. mass increases, acceleration decreases
the answer will be D.
Answer:
D
Step-by-step explanation:
According to Newton's second law of motion, mass is inversely proportional to acceleration. As mass increases, acceleration decreases and the opposite.
-6a - 4(a - 3) = -6a + 15
Step-by-step explanation:
-6a - 4(a - 3) = -6a + 15
=> -6a - 4a + 12 + 6a - 15 = 0
=> -4a - 3 = 0
=> -4a = 3
=> a = -3/4
FRESHMEN MATH PLEASE HELP
Answer:
see below
Step-by-step explanation:
[tex]\sqrt{2}\approx 1.41\\\\\sqrt{3}\approx1.73\\\\\sqrt{4}=2\\\\\sqrt{5}\approx2.23\\\\\sqrt{6}\approx2.44\\\\[/tex]
so we can say
[tex]1.36<\sqrt{2}<2.45\\\\1.65<\sqrt{3}<2.34\\\\1.65<\sqrt{4}<2.34\\\\2.16<\sqrt{5}<3.45\\\\2.41<\sqrt{6}<3.56[/tex]
that's the smalles possible intervals I could find, i don't know if those are the smalles, but those are what I found
