Answers
Answer:I believe the answer is C
Step-by-step explanation:
The y-intercept is 2
Related Questions
How many real solutions are there?
Answers
The discriminant is:
[tex]D=4^2-4(1)(2)=8[/tex]
So [tex]D>0[/tex] which means there are two distinct real solutions.
Hope this helps.
Answer:
2 real solutions
Step-by-step explanation:
x^2 +4x+2 =0
This is in the form ax^2 + bx +c
The discriminant is
b^2 -4ac
4^2 - 4*1*2
16 - 8
8
Since this is greater than 0, we have 2 real solutions
Solve the following System of Three Equations:
x−3y+z=−15
2x+y−z=−2
x+y+2z=1
Answers
Answer:
x = -3 , y = 4 , z = 0
Step-by-step explanation:
Solve the following system:
{x - 3 y + z = -15
2 x + y - z = -2
x + y + 2 z = 1
Hint: | Choose an equation and a variable to solve for.
In the first equation, look to solve for z:
{x - 3 y + z = -15
2 x + y - z = -2
x + y + 2 z = 1
Hint: | Solve for z.
Subtract x - 3 y from both sides:
{z = 3 y + (-x - 15)
2 x + y - z = -2
x + y + 2 z = 1
Hint: | Perform a substitution.
Substitute z = -15 - x + 3 y into the second and third equations:
{z = -15 - x + 3 y
15 + 3 x - 2 y = -2
x + y + 2 (-15 - x + 3 y) = 1
Hint: | Expand the left hand side of the equation x + y + 2 (-15 - x + 3 y) = 1.
x + y + 2 (-15 - x + 3 y) = x + y + (-30 - 2 x + 6 y) = -30 - x + 7 y:
{z = -15 - x + 3 y
15 + 3 x - 2 y = -2
-30 - x + 7 y = 1
Hint: | Choose an equation and a variable to solve for.
In the second equation, look to solve for x:
{z = -15 - x + 3 y
15 + 3 x - 2 y = -2
-30 - x + 7 y = 1
Hint: | Isolate terms with x to the left hand side.
Subtract 15 - 2 y from both sides:
{z = -15 - x + 3 y
3 x = 2 y - 17
-30 - x + 7 y = 1
Hint: | Solve for x.
Divide both sides by 3:
{z = -15 - x + 3 y
x = (2 y)/3 - 17/3
-30 - x + 7 y = 1
Hint: | Perform a substitution.
Substitute x = (2 y)/3 - 17/3 into the third equation:
{z = -15 - x + 3 y
x = (2 y)/3 - 17/3
(19 y)/3 - 73/3 = 1
Hint: | Choose an equation and a variable to solve for.
In the third equation, look to solve for y:
{z = -15 - x + 3 y
x = (2 y)/3 - 17/3
(19 y)/3 - 73/3 = 1
Hint: | Isolate terms with y to the left hand side.
Add 73/3 to both sides:
{z = -15 - x + 3 y
x = (2 y)/3 - 17/3
(19 y)/3 = 76/3
Hint: | Solve for y.
Multiply both sides by 3/19:
{z = -15 - x + 3 y
x = (2 y)/3 - 17/3
y = 4
Hint: | Perform a back substitution.
Substitute y = 4 into the first and second equations:
{z = -x - 3
x = -3
y = 4
Hint: | Perform a back substitution.
Substitute x = -3 into the first equation:
{z = 0
x = -3
y = 4
Hint: | Sort results.
Collect results in alphabetical order:
Answer: {x = -3 , y = 4 , z = 0
Students raised $88 for charities. Their principal gave $35 to charity A and
the rest to charity B. What is the ratio of money given to charity A to the
money given to charity B?
35:53
35: 88
53:35
88:35
The gym has 15 basketballs and 40 footballs. what is the simplified ratio of basketballs to footballs?
15:40
10:40
3:8
8:3
Answers
Answer:
35:53
3:8
Step-by-step explanation:
3=7-2(3z+2)
How to solve
Answers
Answer: z = 0 | Equation is not solvable
Step-by-step explanation:
We have 3 = 7 - 2(3z + 2)
When we distribute the 2, we get: -6z - 4 + 7 = 3
Combine like terms: -6z + 3 = 3
Subtract the left hand side 3 from the right hand side 3: -6z = 0
We can not divide by zero thus the equation is not solvable.
If 3a/b -6= 21, what is the value of a/b?
Answers
Answer:
[tex]\Huge \boxed{9}[/tex]
Step-by-step explanation:
[tex]\displaystyle \frac{3a}{b} -6= 21[/tex]
Add 6 to both sides.
[tex]\displaystyle \frac{3a}{b} =27[/tex]
Dividing both sides by 3.
[tex]\displaystyle \frac{a}{b} = 9[/tex]
What is the cost of x students paying tuition of $2800 each?
Answers
Answer:
$2800[tex]x[/tex]
Step-by-step explanation:
Tuition fee per student = $2800/student
if there are [tex]x[/tex] amount of students, then the total costs of tuition that will be generated will be
([tex]x[/tex] students) x ($2800/student) = $2800[tex]x[/tex]
If for example, there are 200 students in this school, then in this case, [tex]x[/tex] = 200 students.
Total cost = (200 students) x ($2800/student) = $560000.
In simple terms, the cost of [tex]x[/tex] students paying tuition of $2800, is [tex]x[/tex] multiplied by the $2800 tuition for each student which is $2800[tex]x[/tex]
How to solve 14x + 2 = 6 (x - 0)
Answers
Answer:
Has not solution.
Step-by-step explanation:
14x÷2 = 6(x - 0)
14x÷2 = 6*x + 6*-0
14x÷2 = 6x - 0
14x = 2*6x
14x ≠ 12x
then:
This equation has not solution.
Each statement describes a transformation of the graph of F(x) = x. Which statement correctly describes the graph of g(x) if g(x) = f(x) - 3?
Answers
Answer: B) Shift 3 units down
Recall that y = f(x) as both describe outputs of a function. The same applies for g(x) as well. Saying f(x)-3 means y-3. So we're subtracting 3 from the y coordinate of each point. A point like (1,5) moves to (1,2). Doing this to all points on f(x) will move the entire curve down 3 units.
X = 1/7y - 9
X + 9 = 1/7
7x + 63 = y
Y = 7x + 63
Answers
Answer:
9x
Step-by-step explanation:
X=1/7y-9
X+9=1/7
7x + 63 = y
Y=7x+63
Y-7x=63
Y=63/7x
Y=9x
the sum of two numbers is 87. One of the numbers is 6 more than twice the other. what are the two numbers?
Answers
Answer:
27 and 60
Step-by-step explanation:
lets say the first number 'a' and the second number 'b'
1) The question says the sum of two number is 87 which means a + b = 87........given 1
2) we have another given which says one of the number is 6 morethan twice the other which means a = 2b + 6.......... given 2
a + b = 87
2b + 6 + b = 87 (we substitute 'a' with the given 2b + 6)
3b + 6 = 87
3b = 87 - 6
3b = 81
3b = 81
3 3
b = 27 ..... the first number
a = 2b + 6
a = 2 × 27 + 6
a = 54 + 6
a = 60..... the second number
hope u like it ❤️❤️❤️
For any question comment me
What kind of lines are the edges of the length and the width of a piece of printer paper? A. parallel lines B. perpendicular lines C. neither
Answers
Answer:
[tex]\huge\boxed{B. \ Perpendicular \ Lines}[/tex]
Step-by-step explanation:
The edges of length and width of a piece of printer paper perpendicularly intersect each other.
=> Perpendicular Lines are those making an angle of 90 degrees with each other.
Answer:
Perpendicular lines
Step-by-step explanation:
H.
Between 9 AM and 10 AM one hundred airplanes departed from Newark Airport. Ten of the airplanes were delayed by an hour each. Of the remaining airplanes, half left on time and half were delayed by an average of 20 minutes. To the nearest whole minute, how long was the average flight delay
Answers
Answer:
27 minutes
Step-by-step explanation:
Given that :
Total number of planes = 100
10 planes were delayed by an hour each= 60 minutes;
Total delay time for the 10 planes = (60 * 10) = 600 minutes
Of the 90 remaining :
Half (45) left on time = no delay
(Delay2) : Half (45) experieced a average delay of 20 minutes.
Total delay time for the 45 planes = (45 * 20) = 900
Hence,
Overall delay time = (600 + 900) = 1500 minutes
Number of planes delayed = (10 +45) = 55 planes
Average flight delay :
(Overall delay time / number of planes delayed)
(1500 / 55) = 27.27
= 27 minutes ( to the nearest minute)
Answer:
27
Step-by-step explanation:
Given an isosceles right triangle with side 6 m, what is the length of the hypotenuse?
Show work please
Answers
Answer: 6√2m or 8.49.
Step-by-step explanation:
Drawing the right angled triangle and label the sides, AC, which is the hypotenuse and the longest, AB , one if the sides, and BC the third sides. Since it is an isosceles right angle triangle with the right angle at B, based on my own diagram here, two of the sides are equal.
AB = BC = 6m
Now to find the hypotenuse, we apply the Pythagoras theorem which states that the square of the sum of the two sides equal the square of the hypotenuse side.That is
AC² = AB² + BC²
AC² = 6² + 6²
= 36. + 36
= 72
AC² = 72, Therefore, AC which is the hypotenuse
AC = √72
= √36 × √2
= 6√2m. or 8.49m
A number is 9 more than another number. Twice the sum of the two numbers is 10. Find the two numbers.
Answers
Answer:
7, -2
Step-by-step explanation:
we call the first number "X" and the second one "Y"
X is 9 more than Y! which means we need to add 9 to Y so it'll be equal to X. so: Y+9=X
also 2×(X+Y)=10
you can also write this down as: 2X+2Y=10
now we have:
X=Y+9
2X+2Y=10
you can now put what equals to X in the second Equation:
2(Y+9)+2Y=10 => 2Y+18+2Y=10 => 4Y=10-18 =>Y= -2
the only thing left to do is to put Y= -2 in the first equation:
X= -2+9 => X=7
An algebraic equation is an equation with unknown variables which can be represented using any number of the alphabet.
The two numbers are 7 and -2
Let's represent the unknown numbers which are the unknown variables with the letters
Let the first number = m
The second number = n
A number is 9 more than another number. This statement is represented by the algebraic equation:
m = 9 + n .......... Equation 1
Twice the sum of the two numbers is 10. This statement is represented by the algebraic equation:
2 (m + n) = 10
2m + 2n = 10...................Equation 2
We substitute 9 + n for "m" in Equation 2
2(9 + n) + 2n = 10
18 + 2n + 2n = 10
Subtract 18 from both sides
18 - 18 + 2n + 2n = 10 - 18
4n = -8
Divide both sides by 4
4n/4 = -8/4
n = -2
We solve for m using Equation 1
m = 9 + n
m = 9 + (-2)
m = 9 - 2
m = 7
Therefore, the two numbers are 7 and -2
To learn more, visit the link below:
https://brainly.com/question/22299566
The ratio of men to women working for a company is 5 to 6. If there are 156 women working for the company, what is the total number of employees? employees
Answers
Abigail is putting juice into cone-shaped containers to make frozen treats. She has approximately one quarter of a gallon, or 58 cubic inches, of juice to make the treats with. Each
container has a height of 3 inches.
Use the information to complete the table indicating the maximum number of treats that Abigail could make with 58 cubic inches of juice.
Answers
Answer/Step-by-step explanation:
Maximum number of treats = amount of juice (58 in³) ÷ volume of cone-shaped container to be used
We are given different containers with the same height of 3 in, but different radius. Volume of a cone is given as ⅓*πr²h
Complete the table as follows:
Maximum no. of treats to be made with container of radius (r) 0.5 in, height 3 in:
Take π as 3.14
Volume = ⅓*3.14*0.5²*3 = 0.79 in³
Max no. of treats = 58 ÷ 0.79 = 73.4
73 containers can be filled completely. Therefore, maximum number of treats she could make is 73
Maximum no. of treats to be made with container of radius (r) 1 in, height 3 in:
Take π as 3.14
Volume = ⅓*3.14*1²*3 = 3.14 in³
Max no. of treats = 58 ÷ 3.14 = 18.5
18 containers can be filled completely, therefore, maximum number of treats to be made with this cone is 18 treats.
Maximum no. of treats to be made with container of radius (r) 1.5 in, height 3 in:
Take π as 3.14
Volume = ⅓*3.14*1.5²*3 = 7.07 in³
Max no. of treats = 58 ÷ 7.07 = 8.2
Max no of treats to be made is 8.
What is the greatest common factor of 25 and 80?
Answers
Answer:
GCF of 25 and 80 = 5
Answer:
GCF of 25 and 80 is 5
Step-by-step explanation:
Six friends want to play enough games of chess to be sure every one plays everyone else. How many games will they have to play
Answers
Answer: 15 games
Step-by-step explanation:
BD bisects ∠ABC. Find m∠ABD and m∠CBD
Answers
Answer:
Since BD bisects angle ABC, the resultant angles, angles ABD and CBD will be equal in magnitude. Since we are not given either the value of ABC nor are we given the figure, the answer we can get to from the given question is
angle ABD = angle CBD
Please help me out! :)
Answers
Answer:
[tex]\frac{1}{6}[/tex]
Step-by-step explanation:
the third option
Consider the relationship 7r+4t=14. a. Write the relationship as a function r=f(t).
Answers
Answer:
7r + 4t = 14
<=> 7r = 14 - 4t
<=> r = (14 - 4t) / 7
Answer: r = f(t)
[tex]r = 2 - \frac{4}{7} t[/tex]
The relationship 7r+4t=14 in terms of t or as a subject r is r = (14 - 4t)/7.
What is a function?It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
We have:
7r+4t=14
Write the relationship as a function r=f(t).
Make subject as r
7r = 14 - 4t
r = (14 - 4t)/7 = f(t)
Thus, the relationship 7r+4t=14 in terms of t or as a subject r is r = (14 - 4t)/7.
Learn more about the function here:
brainly.com/question/5245372
#SPJ2
Isabella decides to sell handmade stationery. She decides to sell 2 cards for $9. Which table below show the possible values of c, the number of cards Isabella sells, and d, the number of dollars she charges?
Answers
Answer:
G.
Step-by-step explanation:
cards = 2
dollars = 9
to check that the number of cards with the correct amount d;
use the ratio and proportion.
(3 x 18)/9 = 4
(4 x 31.5)/18 = 7
(7 x 45)/31.5 = 10
therefore, option G. table G. is the correct answer
try doing the ratio and proportion on the other table and the number of cards DO NOT match with the amount. (see attached)
Given the word "Nutrition", what is the probability of picking a "t" when randomly
selecting a letter? (decimal rounded to hundredth)
Answers
Answer:
0.2 repeating
Step-by-step explanation:
Divide. 19,432 and 56 pls help me
Answers
Answer:
347
Step-by-step explanation:
347
How many tens and ones equals 4 tens. And 6 ones
Answers
Answer: 46
Step-by-step explanation:
The Distribution of Sample Means expresses the way in which sample means taken from a population and of a given sample size are distributed around the population mean.
a. True
b. False
Answers
Answer:
This is true
Step-by-step explanation:
Because a distribution of sample means is as the set of means from all the possible random samples of a specific size, selected from a specific given population.
If f(x)= x and g(x) = x + 6, find g(f(o)).
Answers
Answer:
6
Step-by-step explanation:
f(x)= x
g(x) = x + 6,
g(f(o))
Let x = 0
f(0) = 0
g(f(0) = g(0) = 0+6 = 6
Complete the equation for the horizontal line that passes through (5, –7).
Answers
Answer:
y = -7.
Step-by-step explanation:
It is horizontal so it will pass through the y axis where y = -7. It is parallel to the x axis so will never pass through it.
What are geologists able to tell archaeologists about fossils?
A. the beliefs of early people
B.how early people lived
C. how old they are
D. what they were used for
Answers
Answer:
C. . how old they are
Step-by-step explanation:
Geologist are people that deal with the internal structure of the earth.
They study Rocks, and it's deposit accumulated millions of years back.
They can also give account of what happened in the past and the types of organisms that existed in the past.
Fossils are traces of event, remains of dead animals and decomposed object.
So geologist can give account of how many years a particular fossil has lived in that particular environment.
Which shape best describes the distribution of the following data? 1, 15, 36, 6 67,68, 68, 68, 69, 69, 69, 69, 70, 70, 70, 70, 70, 71, 71, 72 a. normal b.bimodal c.positively skewed d.negatively skewed
Answers
Answer: d.negatively skewed
Step-by-step explanation:
1
15
36
6
67
68
68
68
69
69
69
69
70
70
70
70
70
71
71
72
The distribution with the data above is negativey skewed. This was inferred from the histogram plot generated from the data.The output shows a distribution which has a long tail to the left and peaks to the right. This characteristics describes a distribution which is negatively skewed. Diagram of the obtained histogram for the distribution can be found in the attachment below.