State the value of the discriminant of 5x2 + 9x = 3.
please answer quick!
Answers
Answer:
141
Step-by-step explanation:
convert to standard form then use D= B squared -4ac
Related Questions
Which of the following represents a positive integer?
9º below zero
A deposit of $50
A weight loss of 10 pounds
Answers
Answer: A deposit of 50$
Step-by-step explanation:
First, 9 Degrees below 0. 0-9 is -9 so this is a negative integer.
Second, deposit of 50$ so pretend your bank amount is x so x+ 50$ would be x + 50! Which is a positive integer
Finally, A weight loss of 10 pounds, x- 10 is probably a negative integer.
Hope this helps!
Please help me. Mark me the branliest.
Topic: Percentage
Q1) 80% of a dog's mass is equal to 24% of the mass of a lion. If the mass of the lion is 105 kg more than the mass of the dog, find the total mass of the dog and the lion.
Answers
We are given that 80% of the dog's mass is equal to 24% of the lion's mass. Mathematically, this can be expressed as:
0.80D = 0.24L
We are also given that the mass of the lion is 105 kg more than the mass of the dog:
L = D + 105
We can use these two equations to find the values of D and L.
Substituting the value of L from the second equation into the first equation:
0.80D = 0.24(D + 105)
Now, let's solve for D:
0.80D = 0.24D + 0.24(105)
0.80D - 0.24D = 25.2
0.56D = 25.2
D = 25.2 / 0.56
D ≈ 45
Now that we have the value of D, we can find the value of L by substituting it back into the second equation:
L = 45 + 105
L = 150
Therefore, the total mass of the dog and the lion is:
D + L = 45 + 150 = 195 kg
So, the total mass of the dog and the lion is 195 kg.
Nine pounds of rice was divided evenly into 5 separate bags to be sold separately. How many pound of rice was in EACH of the bags?
Answers
Explanation:
This is just simple division its dividing 9 pound bag into 5 equal bags.
9÷5=1.8
PLS HELP
A street that is 263m long is covered in snow. City workers are using a snowplow to clear the street. The snowplow has tires that are 2.1m in diameter. How many times does a tire have to turn in traveling the length of the street? Use the value 3.14 for π. Round your answer to the nearest tenth. Do not round any intermediate steps.
Answers
Answer:
Find the circumference of the tire: 264%2F44 = 6 meters
Find the diameter: 6%2F3.14 = 1.9 meters
Step-by-step explanation:
The sum of twice a number and 13 is 47. Find the number.
Answers
Answer: 17
Step-by-step explanation:
In this problem, the phrase "a number" can be interpreted as a variable. In this case, let the variable be "x."
Thus, "twice a number" = "2x"
"and 13" = "+ 13"
"is 47" = "= 47"
Thus, the problem is simply 2x + 13 = 47.
Then, simply subtract 13 from both sides to get 2x = 34.
Then, simply divide both sides by 2 to get x = 17.
Because "the number" is "x," the number is 17.
Hope it helps :) <3 and lmk if you need more help
17
Step-by-step explanation:
you represent the unknown by a variable
for example X
2x +13=47
A plumber has a 2-meter length of pipe. He needs to cut it into sections that are 10 centimeters long. How many sections will he be able to cut? (I will give brainliest if you answer first)
Answers
Answer:
20 pieces.
Step-by-step explanation:
2 meters is equivalent to 200 centimeters and if you divide 200 by 10 you get 20 pieces.
I AM SO DAM DUM. PLEASE HELP
Answers
Answer: The length of the base of the triangle is, 9.1 inches
Step-by-step explanation: The area of the triangle below is 23.66 square inches.
And, The height = 5.2 inches
We know that;
Area of triangle = 1/2 × Base × Height
Substitute all the values we get;
⇒ 23.66 = 1/2 × Base × 5.2
⇒ 23.66 = Base × 2.6
⇒ Base = 23.66 / 2.6
⇒ Base = 9.1 inches
Explanation: 23.66 times 2 is 47.32 divided by 5.2 is 9.1 and 9.1 times 5.2 is 47.32 divided by 2 is 23.66
please help me with this! i’ll give you brainlist or whatever it’s called just help
Answers
The function is linear
Answer:
-2, -1, 0, 1, 2
Step-by-step explanation:
-4/2=-2
-2/2=-1
0/2=0
2/2=1
4/2=2
If the diameter of the circle above is 18 in, what is the circumference of the circle?
Answers
Circumference = 2 x pi x 9
= 56.55
Answer:
18π in
Step-by-step explanation:
The formula for the circumference of a circle whose diameter, d, is given is
C = πd.
In this case the diameter is 18 inches. Thus, the circumference is
C = π(18 in) = 18π in
GIVING BRAINLIEST
(question is in the image)
Answers
Answer:
D. 2,574 cubes
Step-by-step explanation:
L = 2.25
W = 3.25
H = 5.5
This makes the volume (L x W x H) = 40.21875
Now for the 1/4 cubes, each of those has a volume of 0.015625
Now we divide the volume of the box by the volume of the cubes to see how many cubes can fit
40.21875 / 0.015625 = 2,574
This data set shows the daily number of visitors who used the yoga center at the park. The numbers in blue show the numbers for weekends. Daily Number of Visitors 13 15 12 18 9 18 20 15 22 26 24 12 29 12 18 8 16 17 21 19 38 24 37 27 32 34 28 31 15 Select the correct answer. For how many days were the numbers of visitors recorded? A. 27 B. 28 C. 29 D. 30 E. 31
Answers
C. 29
We know this by counting the amount of numbers given for the data set
Simplify the algebraic expression:
5(x + 2) + 2(x - 3)
Answers
Answer:
7x+4
Step-by-step explanation:
Which number sentence is true?
Answers
Answer: D for Q 1. A for Q 2.
Step-by-step explanation:
Answer:
Step-by-step explanation:
-7 2/6>-13
is true because when u calculate the denominator by the numerator its the only real number
The cafeteria at Midtown Middle School surveyed 575 students about their favorite food. Find the number of students that responded for each of the following. Show your work.
chicken: 8%
salad: 20%
burgers: 16%
fruit:24%
Answers
Answer:
chicken:46
salad: 115
burgers: 92
fruit:138
Step-by-step explanation:
chicken: 575*8%=46
salad: 575*20%=115
burgers: 575* 16% =92
fruit:575*24%=138
Therefore when
575 —> 100%
X—> 8%
Then you cross multiply, 100x= 575x8
X= (575x8)/100.
That’s the mount of students for chicken :) continue this system to get the other values, hope this helped <3
one of my savvas questions
Answers
Which of the following quantities are directly proportional?
the length of a right triangle's leg and its area if the other leg is 5 inches.
Answers
Answer:
25 inches squared
Step-by-step explanation:
Division Rule: Evaluate the expression.
10^4÷10^4=
Answers
A bakery can make 4 cheesecakes for every 5 blocks of cream cheese. Which table represents the relationship between the number of cheesecakes the bakery makes and the number of blocks of cream cheese the bakery uses?
A
\text{\footnotesize Cheesecakes}Cheesecakes \text{\footnotesize Cream Cheese} \newline \text{\footnotesize (blocks)}Cream Cheese
(blocks)
88 1010
1616 2020
2020 2525
B
\text{\footnotesize Cheesecakes}Cheesecakes \text{\footnotesize Cream Cheese} \newline \text{\footnotesize (blocks)}Cream Cheese
(blocks)
44 55
88 1515
1616 2525
C
\text{\footnotesize Cheesecakes}Cheesecakes \text{\footnotesize Cream Cheese} \newline \text{\footnotesize (blocks)}Cream Cheese
(blocks)
44 55
88 99
1616 1717
D
\text{\footnotesize Cheesecakes}Cheesecakes \text{\footnotesize Cream Cheese} \newline \text{\footnotesize (blocks)}Cream Cheese
(blocks)
88 1010
1010 1212
1212 1414
Answers
I need help ASP!!! LAST QUESTION!!!
Answers
Explanation: 4/8 + 3/8 = 7/16
HELP PLEASE- i attached the pic
Answers
Step-by-step explanation:
ℎ 8 2 16 ℎ . 81 8 16-8 ℎ ℎ “ “
-
The stem-and-leaf plot displays data collected on the size of 15 classes at two different schools.
Mountain View School Seaside School
0 5, 8
9, 8, 2, 0 1 0, 1, 2, 5, 6, 8
8, 7, 6, 5, 5, 4, 4, 3, 1, 0 2 5, 5, 7, 7, 8
0 3 0, 6
Key: 2 | 1 | 0 means 12 for Mountain View and 10 for Seaside
Part A: Calculate the measures of center. Show all work. (2 points)
Part B: Calculate the measures of variability. Show all work. (1 point)
Part C: If you are interested in a smaller class size, which school is a better choice for you? Explain your reasoning. (1 point)
Answers
For Mountain View School:
Data: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 0 + 1 + 2 + 3 + 4 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 8 + 8 + 8 + 9) / 19
= 100 / 19
≈ 5.26
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
For Seaside School:
Data: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 1 + 1 + 2 + 2 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 7 + 8 + 8 + 8 + 9) / 19
= 80 / 19
≈ 4.21
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
Now let's calculate the measures of variability, specifically the range and interquartile range (IQR).
Range: The range is the difference between the largest and smallest values in the dataset.
For Mountain View School:
Range: 9 - 0 = 9
For Seaside School:
Range: 9 - 0 = 9
Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1) and measures the spread of the middle 50% of the data.
For Mountain View School:
Q1 = 3
Q3 = 7
IQR = Q3 - Q1 = 7 - 3 = 4
For Seaside School:
Q1 = 2
Q3 = 7
IQR = Q3 - Q1 = 7 - 2 = 5
To determine which school is a better choice for a smaller class size, we can consider both the mean and the median.
Both the mean and median for Mountain View School are higher than those for Seaside School. This suggests that, on average, the class sizes at Mountain View School are larger than those at Seaside School. Therefore, if you are interested in a smaller class size, Seaside School would be a better choice
For Mountain View School:
- Median: The median class size is the middle value, which is 25.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (29 + 28 + 28 + 27 + 25 + 24 + 24 + 23 + 21 + 20 + 19 + 18 + 15 + 13 + 10) / 15 = 21.27.
For Seaside School:
- Median: The median class size is the middle value, which is 20.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (25 + 25 + 27 + 27 + 28 + 28 + 28 + 30 + 31 + 35 + 36 + 38 + 40 + 43 + 45) / 15 = 31.13.
Part B:
For Mountain View School:
- Range: The range is the difference between the largest and smallest values, which is 29 - 10 = 19.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 20 and Q3 is 28. Therefore, the IQR is 28 - 20 = 8.
For Seaside School:
- Range: The range is the difference between the largest and smallest values, which is 45 - 25 = 20.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 27 and Q3 is 38. Therefore, the IQR is 38 - 27 = 11.
Part C:
If you are interested in a smaller class size, Mountain View School is a better choice for you because it has a lower mean and median class size than Seaside School.
I need help i dont understand thisss
Answers
HAPPY NEW YEARS I NEED HELP THO
Answers
i need help ;-; pls i need answer ;-; will give brainliest
Answers
Answer:
15x because the air ballon drops 15 meters each time the elevation decreases
Step-by-step explanation: Im not sure if this is what youre looking for but it drops 15 meters each time, 5 times so the change would be 15x and the x is used as how mant different times the elevation drops
Answer:
15. x
Step-by-step explanation:
Each time she goes down, she lowers by 15 meters. The integer is 15 and the integer that represents the elevation is x since it isn't explained, and you'd never know the value. I hope this helps.
Need answer asap please and thank you :)
Answers
Answer:
1
Step-by-step explanation:
anything divided by itself is 1
also when dividing exponets with the same base we subtract the exponet
7-7
0
and 8^0 is 1 because anything raised to the power of zero is 1
hopes this helps
Answer:
1
Step-by-step explanation:
8^7=8^7
A number divided by itself = 1
8^7=2097152
2097152/2097152=1
Above are two different diagrams of the same backyard. If the length of the diagram on the left is 4 in, what is the length of the diagram on the right?
A. 1.33 in
B. 7 in
C. 17 in
D. 12 in
Answers
Answer:
A
Step-by-step explanation:
Davian is traveling at a constant speed of 85 kilometres per hour. If he is half way through his 510 kilometre trip, how much longer will the trip take?
a.1.5 hours
b.3 hours
c.425 hours
d.12 hours
e.5 hours
Answers
All you have to do is subtract 85 from 510 till you have 0
hope this helps you out .
Math question someone pls explain how to answer it I am stuck pt.6
Answers
Answer:
1/5 or 20%
Step-by-step explanation:
Probability = favorable outcomes
total num. of outcomes
Probability = 2
10
Find the GCF, 2.
2 ÷ 2 = 1
10 ÷ 2 = 5
1/5
sorry if it's wrong
Answer:
The probability of choosing a green shirt is 20%=1/5=.2
Step-by-step explanation:
find the total amount = 10
Find the total of question (probability of choosing green) = 2
set as a fraction:
Numerator = amount needed (2)
Denominator = all things/objects involved (10)
PS*
With probability there is a good chance the answer is going to be less than 1 or 100%, knowing that can help to tell which number goes in what place of the fraction
ex:
10/2=5=500% (this can't be the answer)
So Flip it 2/10=.2=20% (This seems more of a reasonable answer)
Need answer real quick due today
Answers
Answer:
+7 or -7
Step-by-step explanation:
25^2 - 24^2 = b^2
625 - 576 = b^2
49 = b^2
+7 or -7 = b
Answer:
b =-7 , b=7
Step-by-step explanation:
X Y
-7 0
0 1
What is the slope of the linear function represented in
the table?
*-7
07/1
01/1
07
Answers
the formula for slope is rise over run, or y1-y2 divided by x1-x2. we can choose either number as y1 or y2 but it needs to stay consistent with x
so let’s plug in from your table.
0-1 divided by -7 -0
(you could also do 1-0 divided by 0-(-7))
-1/-7 which equals 1/7
so, your slope is 1/7
I hope this helps! :)