Answer: A is the answer
Step-by-step explanation:
I just took the test!!
It has one real solution if the discriminant of an equation is zero, option (A) is correct.
What is a quadratic equation ?Any equation of the form [tex]\rm ax^2+bx+c=0[/tex] where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.
As we know, the formula for the roots of the quadratic equation is given by:
[tex]\rm x = \dfrac{-b \pm\sqrt{b^2-4ac}}{2a}[/tex]
Here:
Discriminant D:
[tex]\rm D =\sqrt{b^2-4ac}[/tex]
D = 0
[tex]\rm x = \dfrac{-b \pm0}{2a}[/tex]
x = -b/2a (one real solution)
Thus, it has one real solution if the discriminant of an equation is zero, option (A) is correct.
Learn more about quadratic equations here:
brainly.com/question/2263981
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A rectangle has length 8x 104 mm and width 4 x 104 mm. The rectangle's length is how many times
its width?
The rectangle's length is times its width.
(Type a whole number.)
Answer:
Step-by-step explanation:
It would be 2.
8/4=2
10^(4-4)=10^0 or 1
2*1=2
4. Parker has saved $1,200 for him and his
wife to go to an all-inclusive island resort.
He decides to take out a $1,000 simple
annual interest loan at 4.5% for 1 year
and stay in a suite. Is Parker being
financially responsible or financially
irresponsible? What is the monetary value
of his benefit or cost?
Answer:
To be honest i dont even know
Step-by-step explanation:
ummmm
find the slope of the graphs
Michael is using a number line to evaluate the expression –8 – 3.
A number line going from negative 12 to positive 12. A point is at negative 8.
After locating –8 on the number line, which step could Michael complete to evaluate the expression?
Michael could rewrite the expression as Negative 8 + 3 and move 3 spaces to the right.
Michael could rewrite the expression as Negative 8 + negative 3 and move 3 spaces to the right.
Michael could rewrite the expression as Negative 8 + 3 and move 3 spaces to the left.
Michael could rewrite the expression as Negative 8 + negative 3 and move 3 spaces to the left.
Answer:
Michael could rewrite the expression as Negative 8 + negative 3 and move 3 spaces to the leftStep-by-step explanation:
Given
Expression
-8 - 3Solving
-8 - 3 = (-8) + (-3) = - 11-11 is smaller than -8 and therefore is on the left from -11 by 3 spaces
Correct choice is:
Michael could rewrite the expression as Negative 8 + negative 3 and move 3 spaces to the leftAnswer:
Answer is D.
Step-by-step explanation: If you see all the answers, C. has no negative sign included into it, so its not C, and its not A or B because they move to the RIGHT side. Therefore, D is your answer.
Find the value of x. Then find the measure of each angle.
Answer:
1)103
2)103
3)77
Step-by-step explanation:
(first, look at the photo)
x + (x - 26) = 180
2x - 26 = 180
2x = 206
x = 103
2.angle= 103
3.angle = 103 - 26 = 77
hope this helps ^-^
what is y if x is 12 for this slope intercept form equation y=-1/3x-2
Answer:
-6
Step-by-step explanation:
y=-1/3(12)-2
=(-1/3x12/1)-2
=-4-2
y=-6
Name two pairs of supplementary angels in the figure below please help ASAP
Answer:
AEC and DEB are two pairs of supplementary angles.
What is the sum of the first five prime numbers?
18
26
28
39
Answer:
The answer is 28
Step-by-step explanation:
the 1st 5 prime no. s are ----- 2,3,5,7,11. now the sum is --- 2+3+5+7+11=28............
Answer: A or 28
Step-by-step explanation:
The first five prime numbers are 2,3,5,7,and 11
If you add all of these up then you will get 28.
HOPE THIS HELPS!!!
How much time will Alex need to walk to his school, which is 2 1/ 4 miles away from his house, if he would walk with the speed of …
3 mph
Please help!!!!
Answer:
Alex needs to walk for 45 minutes.
Step-by-step explanation:
2.25 / 3 = 0.75 hours
0.75 hours = 45 minutes
John is on vacation and forgot his video camera. He found a camera shop that rents the cameras. They charge a one-time cleaning fee of $45 and the per day rental charge is $23. If his final bill is $229, how many days did John rent the video camera? Write and solve an equation for John's camera rental.
Given:
One-time cleaning fee = $45
Per day rental charge = $23
Final bill = $229
To find:
The number of days for which John takes video camera on rent.
Solution:
Let the number of days be d.
Rental charge for one day = $23
Rental charge for d days = $23d
Total charges = One-time cleaning fee + Rental charge for d days
[tex]Total=45+23d[/tex]
Final bill is $229. So,
[tex]45+23d=229[/tex]
Subtract 45 from both sides.
[tex]45+23d-45=229-45[/tex]
[tex]23d=184[/tex]
Divide both sides by 23.
[tex]d=\dfrac{184}{23}[/tex]
[tex]d=8[/tex]
Therefore, the required number of days is 8.
Help me with the bottom ones please
Answer:
13 = A
14 = C
15 = B
16 = D
Step-by-step explanation:
Answer:
13. a 14. c 15. b 16. d
Step-by-step explanation:
The table shows that there were 2,000 bacteria at the beginning of the experiment. What was the size of population of bacteria after 1 hour? After 2, 3 and 4 hours?
Answer:
they will usually double because of the process of mitosis.
Step-by-step explanation:
Here are several recipes for sparkling lemonade. For each recipe
describe how many tablespoons of lemonade mix it takes per cup
of sparkling water,
Recipe 1: 4 tablespoons lemonade mix and 12 cups of sparkling
water
Recipe 2: 4 tablespoons of lemonade mix and 6 cups of sparkling
water
Recipe 3: 3 tablespoons of lemonade mix and 5 cups of sparkling
water
Recipe 4: 1 tablespoon os lemonade mix and 3 cups of sparkling
water
Answer:
Recipe 1: 1/2tbs of lemonade mix per cup of sparkling water
Recipe 2: 2/3tbs per cup
Recipe 3: 3/5tbs per cup
Recipe 4: 1/3tbs per cup
Step-by-step explanation:
To find the amount of lemonade mix per cup of sparkling water, we just need to divide the amount of lemonade mix in each recipe by its respective amount of sparkling water as this will give us the average amount per cup.
Recipe 1: 4 tbs lemonade mix, 12c sparkling water.
4/12 = 1/3, Recipe 1 requires 1/3 tablespoon per cup of sparkling water.
Recipe 2: 4tbs Lemonade, 6c water
4/6 = 2/3, Recipe 2 requires 2/3 tablespoon per cup of sparkling water.
Recipe 3: 3 tbs lemon, 5c water
Recipe 3 requires 3/5 tablespoon per cup of sparkling water.
Recipe 4: 1 tbs, 3c water
Recipe 4 requires 1/3 tablespoon per cup of sparkling water.
Hope this helped!
A car travels 30.5 miles in of an hour. What is the average speed, în miles per hour
of the car?
Answer:
rounded to the nearest hundredth its 46.21
Step-by-step explanation:
trust im smart
I'm too lazy to do my math homework
Answer:
Hello!!! Princess Sakura here ^^
Step-by-step explanation:
So since you are too lazy I assume that you already know what to do and you just don't want to do it so I don't think you'll need any explaining right?
X: -5 -1 0 1
_______________________________
Y: -32 -8 -2 4
What should i do if i like my best friend ? How do u know if they like u back
Answer: If you like your best friend, you should explain to him/her that you like him/her. If you don’t want to do this, then keep a close eye on them and detect whether they like you back like if they treat you with more kindness than you usually receive.
Step-by-step explanation: Activity: Give them different topics and see if they answer in a way that is different from how they would answer someone else.
is the perimeter 70?
Answer:
Step-by-step explanation:
AC = 8 + 15 = 23
C to the tangent point of BC = 15 (tangents are equal when they come from the same point.
B to the tangent point of BC = 12 (same reason).
BC = 15 + 12 = 27
By a similar argument BA = 12 + 8 = 20
So add them together. 20 + 27 + 23 = 70 I think.
You are absolutely right. Or we both are wrong.
Divide the product of 6 and 5 by the quotient of 12 and 4
pls help! what is the expression??
Answer:
Let variable y be the unknown number. So triple a number means 3y. The difference (use minus symbol) of triple a number and 5 should be written as 3y −5.
Answer:
the product of 6 and 5 is 30. the quotient of 12 and 4 is 3. so, divide 30 by 3. your answer is 10!
Step-by-step explanation:
Have a great day!
Question 5 of 10 If f(x) = 4x - 12, what is f(2)? h O A. -20 O B. 8 O c. -4 O D. 4 SUE
Answer:
-4
Step-by-step explanation:
Meg is a veterinarian. I. Given week , 50% of the 16 dogs she saw were boxers . Steve is also a veterinarian. In the same week , 7 of the 35 dogs he saw this week were boxers. Each wants to know the record the part , the whole and the percent. Does meg need to find the part the whole or the percent
In this situation, Meg will need to find the whole because she already has the part and the percentage.
What is a whole?In mathematics, a whole represents the total number of items that are analyzed, in this case, the total number of dogs.
What is the part?The part refers to a number that is usually lower than the whole and describes specific characteristics. For example, in a classroom of 30 kids, 20 like to play basketball. Then 20 is the part.
What is the percentage?The percentage is the number followed by the symbol % and represents the relationship between the part and the whole. In this case, the percentage of boxers is related to the number of total dogs.
Based on this, Meg already has the percentage (50%), and the part (16), therefore, she needs to find the whole or the total number of dogs, in this case, 32.
Learn more about percentage in: https://brainly.com/question/7624715
She needs the find the whole
Of the 1200 responded to a survey, 456 claimed to be worried about money. What is the likelihood that a person selected at random will not be worried about money?
What is the solution to the linear equation?
2/5+p=4/5+3/5p
Answer:
P = 1
Step-by-step explanation:
Because (2)/(5)+p=(4)/(5)+(3)/(5)p
Put in order from least to greatest 12, 8, -9, -12, 10, 16 *
Answer:
− 12 , − 9 , 8, 10 , 12 , 16
Step-by-step explanation:
Put the numbers in an ascending order.
Which of the following statements is correct based on the number line below?
Answer:
c
Step-by-step explanation:
because 4 times 4 is more than 12 and c says in between because..yeah
i suck at math and i really need help asap!
Answer:
2
Step-by-step explanation:
2^{4-3}
=2
You only have nickels and dimes in your piggy account. The total comes to 595 cents. What are the three combinations of nickels and dimes you could have?
Answer:
59 dimes and 1 nickel
54 dimes and 11 nickels
1 dime and 117 nickels
Step-by-step explanation:
i know this from using the equation [tex]5n+10d=595[/tex] the n is nickels and the d is dimes
Find the Distance between points A and B: A (8, 12) B: (2, 4)
Please help me out!
Answer:
7
Step-by-step explanation:
7+3=10
7. We learned that in a plane, two lines perpendicular to the same line are parallel. Use the rectangular solid below to explain why the words "in a plane" are needed.
Answer:
"In a plane" imposes the condition that these 3 lines exist in ONLY 2 dimensions, otherwise, the statement, "Two lines perpendicular to the same line are parallel" is false.
Example 1: lines CE & DF are // & perpendicular to CD. TRUE
Example 2: lines CE & BD are // & perpendicular to CD. FALSE
Step-by-step explanation:
hope this helped :P
dtermine the slope of the line (9,-8) (3,4)
Answer:
The answer is -2
Step-by-step explanation:
