how many x intercepts are in y = x 2+ 4x + 5
Answers
Answer:
0 x-intercepts
Step-by-step explanation:
In order to find the x-intercepts ,you need to solve this equation
x² + 4x + 5 = 0 for x and see how many solutions you get:
x² + 4x + 5 = 0
∆ = 4² - 4×1×5 = 16 - 20 = -4
since ∆ < 0 Then the equation has no solution then our Function has none x-intercepts.
check the graph of the function f(x) = x² + 4x + 5 (below)
Related Questions
The box plots show the weights, in pounds, of the dogs in two different animal shelters.
Weights of Dogs in Shelter A
2 box plots. The number line goes from 6 to 30. For the weights of dogs in shelter A, the whiskers range from 8 to 30, and the box ranges from 17 to 28. A line divides the box at 21. For shelter B, the whiskers range from 10 to 28, and the box ranges from 16 to 20. A line divides the box at 18.
Weights of Dogs in Shelter B
Which describes the spread of the data in the two box plots?
The data in shelter A show more spread than the data in shelter B.
The data in shelter B show more spread than the data in shelter A.
The data in shelter A range from about 17 to 28, while the data in shelter B range from about 16 to 20.
The data in shelter A range from about 21 to 28, while the data in shelter B range from about 18 to 20.
Answers
Answer:
The data in shelter A shows more spread than the data in shelter B
-And-
The data in shelter A range from about 17 to 28, while the data in shelter B range from about 16 to 20
For the range/span you look at where the actual box lies and for the spread use the whisker span.
Andrea invites some of her relatives to a party.
She invites: 12 cousins
6 aunts
4 brothers
2 sisters
what fraction are aunts and sisters
Answers
Answer:
Aunts = 6/24 => 3/12 => 1/4
Sisters = 2/24 => 1/12
hope that helps uh..☺
Answer:
1/2 is the answer
Pls help me with this problem
Answers
Answer: 5
Step-by-step explanation: x means 5
1: greater than 1
2: less than -1
3: neither
4: greater than 1
5: less than -1
Carlos is buying movie tickets for a group. He wants to have at least 20 tickets and spend no more than $300.
Adult tickets cost $15 and child tickets cost $8. Write a system of inequalities that can be used to find the number of each type of ticket Carlos could buy?
Answers
Answer: hope this helps ♡
13 Adults = $210
11 Children = $88
Step-by-step explanation:
x = Adults
y = Children
x + y ≥ 20
$15x + $8 ≤ $300
let's take 13 adults and 11 children
14 + 11 ≥ 20 $15*14 + $8*11 ≤ $300
= 25 ≥ 20 ✓ = $210 + $88 ≤ $300
= $298 ≤ $300 ✓
Which two factors would give a product of 8.34?
Answers
Answer: 0.06 and 1.39 B 0.06 and 13.9 C 0.6 and 1.39 D 0.6 and 13.9.
Step-by-step explanation: Which two factors would give a product of 8.34? 0.06 and 1.39 B 0.06 and 13.9 C 0.6 and 1.39 D 0.6 and 13.9.
0.6 and 13.9
WHY?:
Multiply the pairs of numbers and match them with their products. Tiles (-5)(4.2) (-7)(-3) (4) (5) (2.5)(-9) Pairs 22.5 21 -22.5 -21 111
Answers
Here are the pairs matched with their products:
- (-5)(4.2) matches with -21
- (-7)(-3) matches with 21
- (2.5)(-9) matches with -22.5
Pairs (4) and (5) do not have corresponding products in the given options.
(-5)(4.2) = -21
(-7)(-3) = 21
(4)(5) = 20
(2.5)(-9) = -22.5
So, the pairs of numbers and their products are as follows:
(-5)(4.2) = -21 matches with -21.
(-7)(-3) = 21 matches with 21.
(4)(5) = 20 matches with 20.
(2.5)(-9) = -22.5 matches with -22.5.
I hope this helps!
HELP ASAP!!!!!!!!
Consider the 720 permutations of the numbers 1, 2, 3, 4, 5, 6. In how many of these permutations does 1 appear next to 2 or 3 appear next to 4 or 5 appear next to 6?
Answers
Answer:
Step-by-step explanation:
The set {1,2,3,4,5,6} has a total of 6! permutations
a. Of those 6! permutations, 5!=120 begin with 1. So first 120 numbers would contain 1 as the unit digit.
b. The next 120, including the 124th, would begin with '2'
c. Then of the 5! numbers beginning with 2, there are 4!=24 including the 124th number, which have the second digit =1
d. Of these 4! permutations beginning with 21, there are 3!=6 including the 124th permutation which have third digit 3
e. Among these 3! permutations beginning with 213, there are 2 numbers with the fourth digit =4 (121th & 122th), 2 with fourth digit 5 (numbers 123 & 124) and 2 with fourth digit 6 (numbers 125 and 126).
Lastly, of the 2! permutations beginning with 2135, there is one with 5th digit 4 (number 123) and one with 5 digit 6 (number 124).
∴ The 124th number is 213564
Similarly reversing the above procedure we can determine the position of 321546 to be 267th on the list.
A group of seventh graders and a group of teachers at a local middle school were asked how many siblings they each have. The dot plots below show the results. Students A dot plot titled Students. A number line going from 0 to 9 labeled number of siblings. There are 2 dots above 0, 4 above 1, 7 above 2, 5 above 3, 2 above 4, and 0 above 5, 6, 7, 8, and 9. Teachers A dot plot titled Teachers. A number line going from 0 to 9 labeled Number of siblings. There is 1 dot above 0, 3 dots above 1, 2 above 2, 4 above 3, 5 above 4, 3 above 5, 1 above 6, 0 above 7, 1 above 8, and 0 above 9. When comparing the shape of the two sets of data, what conclusion can someone draw? The students tend to have fewer siblings than the teachers. The teachers tend to have fewer siblings than the students. Both the students and the teachers have a wide range of siblings. Both sets of data have the same shape. the answer is- a. The students tend to have fewer siblings than the teachers.
Answers
Answer:
A. The students tend to have fewer siblings than the teachers.
Step-by-step explanation:
First we need to draw the dot plots correctly. If you count both sides they have 20 each.
Now, clearly none have fewer nobody here yet has more or less but going on to the next step.
Multiply exactly the number of siblings times how many people chose that many siblings. Ex: 2 (siblings) times 7 (people who has 2 siblings) = 14. And so on.
On the Student A, we get a total of 41 people having sibling, if you count the 0's then there were a total of 43 people. But now on the Teacher's A Dot Plot, we have a total of 68 people, if you include the 0 then we have a total of 69.
So the answer is A. The students tend to have fewer siblings than the teachers.
Answer:
The sum is A
Step-by-step explanation:
Just ma duty to help the community
Help ASAP pls -screenshot-
Answers
Number 2 is 40% because 8/20=0.4
I’m almost 100% sure this is right but i could be wrong
1. 0.6
2. 40%
Create an equation that could be used to model the following scenario:
Alana spent half of her monthly income to pay for her cell phone bill. She then had to spend $38 to put gas in her car. She now has $17 left. How much money did she start the month with?
Answers
Answer: ( 38+17)x2=N
the answer in this equation is 110
Step-by-step explanation:
The table below shows the federal income tax rate for wages earned for married couples.
Annual Income (Wages) Income Tax Rate
$0 to $18,150 10%
$18,151 to $73,000 15%
$73,001 to $148,850 25%
$148,851 to $226,850 28%
$226,851 to $405,100 33%
$405,101 to $457,600 35%
Over $457,600 39.6%
The Rodriguez Family earned $115,500 last year. How much did they pay in income taxes?
A. $28,875
B. $38,775
C. $25,726
D. $29,225
Answers
Answer:
A
Step-by-step explanation:
25% of 115,000 is 28,875
Hope this helps!
Rewrite each equation without absolute value for the given conditions: \(y=|x-5|+|x+5|\) if x<-5
Answers
Answer:
y = 10, if x < -5
Step-by-step explanation:
![Rewrite each equation without absolute value for the given conditions: [tex]y=|x-5|+|x+5|[/tex] if x<-5](https://i5t5.c14.e2-1.dev/h-images-qa/answers/attachments/1k4RlvqG02HMkUuWFWFIqpNc0juBSdzY.jpeg)
7/9 multiplied by 4/7 in simplest form
Answers
4/9 or it would be 0.444444 and so on but the answer is 4/9
Hope this helped you
so basically you can just tell me where the boxes go and bam you get 20 points
Answers
Step-by-step explanation:
(2/3)(-4)(9) = -24
(5/16)(-2)(-4)(-4/5)= -2
(-3/4)(7/8)=-21/32
(2 3/5) (7/9)=91/45
(5/6) x (-2)(-4) x (-4/5) -> -2
(-3/4) x (7/8) -> -21/32
(2 3/5) x (7/9) -> 91/45
Pls help! Will give brainliest!!
Answers
Considering area (A) of garden as 30 square feet:
30 = x(2x+7)
Now we need to expand it:
x(2x+7) = 2x^2 + 7x
2x^2 + 7x = 30
Adding this into an Algebra calculator gives us 5/2 or 2.5
So x = 2.5
To prove this:
2(2.5) + 7 = 12
14 * 2.5 = 30
(2x+7) x = 30
you can distribute to make this easier
2x^2 + 7x = 30
you can plug this into quadratic formula by setting the equation =0, so:
2x^2 +7x -30 = 0
where 2x^2 = a
7x = b
and -30 = c
you can plug this into your calculator and get an answer of
X = 2.5
plls 20 poinsts will mark brainlest
Answers
Answer:
My answer is in the attached image.
help please help help
Answers
Answer:
Question 1: 3
Question 2: 6
Question 2: 6
(ANswer quickly please!) giving brainliest !!!
Last summer, a sports club had 380 members. This summer, due to some renovations, it has 30% more members. How many members are there now?
Answers
Answer:
494
Step-by-step explanation:
380 * 1.3 = 494
Every day, Ed's orange juice stand uses 2/3 of a bag of oranges. How many days will 2 2/3 bags of oranges last?
Answers
4days
Step by step solved:
If 2/3 of a bag of oranges is used every day, then in one day Ed's orange juice stand uses:
2/3 * 1 = 2/3
of a bag of oranges.
To find out how many days 2 2/3 bags of oranges will last, we can divide the total amount of oranges by the amount used each day:
2 2/3 = 8/3
8/3 ÷ 2/3 = 8/3 × 3/2 = 12/3 = 4
Therefore, 2 2/3 bags of oranges will last Ed's orange juice stand for 4 days.
Answer:
4 days
Step-by-step explanation:
2 2/3 ÷ 2/3
2 2/3 = \(\frac{3}{3}\) + \(\frac{3}{3}\) + \(\frac{2}{3}\) = \(\frac{8}{3}\) (\(\frac{3}{3}\) is another name for 1)
\(\frac{8}{3}\) ÷ \(\frac{2}{3}\) = \(\frac{4}{1}\) = 4
Helping in the name of Jesus.
There are 12 inches for every 1 foot. How many inches are equivalent to 4 feet?
A 2-column table with 4 rows. Column 1 is labeled Feet with entries 1, 2, 3, 4. Column 2 is labeled inches with entries 12, 24, 36, question mark.
The equivalent ratio is
.
Answers
Answer:
for the first on it's 48 inches
second one is also 48 inches
Answer:48 inches
Step-by-step explanation:4x12=48
consider the table of input and output values shown.drag a number to each box to complete the table of values to represent a function
Answers
Answer:
1, 3, 5
Step-by-step explanation:
11 is 1, 15 is 3, 9 is 5
Shaun is painting a fence. After finishing three-eighths of the length of the fence he finds that
he has painted 15 feet. Let f be the total length of the fence, set up an equation like one of
those in 4(b) and solve to find f. Use either of the two methods.
Answers
Answer: F = 40
Step-by-step explanation:
*Important: I do not know what the methods mentioned in 4b are, nor do I know its equation. Please take this into account.
What we know:
3/8 is equal to 15 ftF is the total amount of fence paintedWe need to set up and solve the equationHow we do this:
Using basic division, this equation is solveable.
Process:
Divide to find 1/8 15/3 = 5 (1/8f = 5)Multiply to find total 5 x 8 = 40(1/8 x 8 = 8/8)
Solution:
F = 40
8(5) = F
Answer: x = 40
Step-by-step explanation:
let f be the total length of the fence:
(3/8)f = 15
divide both sides by 3/8
f = 15 x 8/3
f = 120/3
f = 40
Find the volume of this cylinder
volume
3140cm^
785cm^
157cm^
314cm^ witch answer is it out of A B C and D thank you I will give brainiest
Answers
Answer:
Volume of the cylinder :---
\(Volume = \pi \times{(radius)}^{2} \times height \\ = \frac{22}{7} \times 5 \times 5 \times 10 \\ = \boxed{785.4 \: c {m}^{3}} \)
B. 785 cm^3 is the right answer.pls answer I will mark brainliest
Answers
Answer:
1372 cubic ft.
Step-by-step explanation:
\(V=\frac{4}{3} \pi 7^3\)
\(V=\frac{4}{3} \pi 343\)
\(V=457\frac{1}{3} \pi\)
Since pi is 3 to find the approximate answer, do:
\(V=457\frac{1}{3} (3)\)
\(V=1372\)
Hence, the volume of the sphere is approximately 1372 cubic ft.
Answer:
V = 1,372 ft³
Step-by-step explanation:
You have been given the equation necessary for calculating the volume of a sphere:
\(V = \frac{4}{3} \pi r^{3}\)
In this formula, "V" represents the volume, "π" is the given value (3), and "r" is the radius. While you have not been given the radius, you have been given the diameter (14 ft). The radius is half of the diameter.
radius = diameter / 2
radius = 14 ft / 2
radius = 7 ft
Now, you can plug this value into the formula and simplify to find the volume.
\(V = \frac{4}{3}\pi r^{3}\) <----- Volume formula
\(V = \frac{4}{3} * (3) *r^{3}\) <----- Plug 3 in for "π"
\(V = \frac{4}{3} * (3) * 7^{3}\) <----- Plug 7 in for "r"
\(V = \frac{4}{3} * (3) * (343)\) <----- Solve 7³
\(V = 1,372 ft^{3}\) <----- Multiply all the terms together
Suppose you borrow money for a year at a simple interest rate of 7.2%. You pay $86.40 in interest. How much have you borrowed?
Answers
Answer:
$1200
Step-by-step explanation:
You want to know the amount borrowed at 7.2% if the simple interest for one year is $86.40.
InterestThe interest formula is ...
I = Prt
where P is the amount borrowed, r is the interest rate, and t is the number of years.
ApplicationUsing the given values, we have ...
86.40 = P·0.072·1
P = 86.40/0.072 . . . . . . divide by the coefficient of P
P = 1200
You have borrowed $1200.
Answer: 1200
Step-by-step explanation: Linear equation. 7.2x = 100(86.40). then divide by 7.2 on each side. x=1200
pls help me with these problems?
Answers
Answer:
Step-by-step explanation:
2. D=21 F=33 E=126
3. G=64 I=52 H=64
4. J=28 K=115 L=37
Help!!! On the train the ratio of children to adults 7:4. If there are 63 children on the train,how may adults are on the train?
Answers
There should be around 43 adults
Help me pls it is very confusing
Answers
please help mark brainliest
Answers
Answer:
x.x.x.x.x.x=4
Step-by-step explanation:
the x means how many times to multiply 4 in this case your multiplying 4, 6 times to get 24
Can Someone Help Me Please? I am offering 100 points!
Geraldine is graphing the inequality x less-than 6. Which statements below describe steps she may take to graph the inequality correctly? Check all that apply.
Draw an open circle at 6.
Draw a closed circle at 6.
Shade all numbers less than 6.
Shade all numbers greater than 6.
Shade all numbers to the right of 6.
Shade all numbers to the left of 6.
Answers
Answer:
shade all numbers less than 6
shade all numbers to the left of 6
Step-by-step explanation:
i believe this is the answer because if you graph x<6, you can see that the shaded area is to the left of 6 (numbers less than 6).
Desmos graphing calculator helps
Answer:
3, & 6
Step-by-step explanation: