For #3, graph the inequality.
3.
y > x2 + 2x -8
Answers
Answer:
Please find attached the required graph of the inequality, y created using Microsoft Excel
Step-by-step explanation:
The inequality is presented as follows;
y > x² + 2·x - 8
We can graph the inequality using Microsoft Excel by generating the data points as follows;
x [tex]{}[/tex] y
-9 [tex]{}[/tex] 55
-8 [tex]{}[/tex] 40
-7 [tex]{}[/tex] 27
-6 [tex]{}[/tex] 16
-5 [tex]{}[/tex] 7
-4 [tex]{}[/tex] 0
-3 [tex]{}[/tex] -5
-2 [tex]{}[/tex] -8
-1 [tex]{}[/tex] -9
0 [tex]{}[/tex] -8
1 [tex]{}[/tex] -5
2 [tex]{}[/tex] 0
3 [tex]{}[/tex] 7
4 [tex]{}[/tex] 16
5 [tex]{}[/tex] 27
6 [tex]{}[/tex] 40
7 [tex]{}[/tex] 55
8 [tex]{}[/tex] 72
9 [tex]{}[/tex] 91
The points are plotted and a dashed line is used to join the points to represent the > inequality symbol. The region above the graph of the inequality is then shaded.
Related Questions
Given the vectors a and b, with lengths 21 and 44 respectively, and cosine of the angle between them equal to StartFraction 7 Over 12 EndFraction, find the scalar projection of a onto b and a · b.
ab =
a · b =
Answers
Answer:
First = 49/4
Second = 539
Step-by-step explanation:
The dot product is 539, and the scalar projection of a onto b is 49/4
What is a Vector?Vector is a quantity that has both magnitude and direction.
The scalar projection of a onto b is given by
[tex]\dfrac {a.b}{|b|}[/tex]
a.b = |a| |b| cos[tex]\rm \theta[/tex]
a.b = 21 *44 *(7/12)
a.b = 539
The dot product of a and b is 539.
The scalar projection is
= 539 / 44
= 49/4
Therefore, the dot product is 539, and the scalar projection of a onto b is 49/4.
To know more about Vector
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find 3 consecutive numbers such that twice the greatest added to three times the least amount of 34.
Answers
Answer:
6
Step-by-step explanation:
2(x+2) + 3x
2x + 4 + 3x = 34
5x + 4 = 34
5x = 34–4
5x = 30
x = 30/5
x = 6
what is the answer what is q
Answers
Answer:
q= - [tex]\frac{2}{3}[/tex]
Step-by-step explanation:
Simplify from 3 (q+4/3) = 2 to 3q+3(4/3)=2
Cancel the common factor 3
3q+4=2
3q=2-4
3q=-2
q=-2/3
Anna and daniel are playing fraction capture. Anna is trying to find sectiones that add up to 3/4 she knows that 1/4 + 1/4 + 1/4 = 3/4 but she wants to earn an extra point for using a frction with a diffrent denominator. Write another number sentence Anna could use to show a sum of 3/4
Answers
Answer: [tex]\frac{1}{4} +\frac{1}{2}[/tex]
Step-by-step explanation:
given data:
fraction = [tex]\frac{3}{4}[/tex]
Solution:
se can make use of the fraction [tex]\frac{1}{4} + \frac{1}{2}[/tex] to get same answer as shown bellow.
[tex]=\frac{1}{4} + \frac{1}{2}[/tex]
first we look for the lcm of the denominators.
[tex]= \frac{2+1}{4}[/tex]
[tex]=\frac{3}{4}[/tex]
.
Elsa took out a 2-year loan to buy a car at a 6% simple interest rate. If she has to pay $264 in interest, how much principal did she borrow? ***REMEMBER - you must find out how much interest she will pay in 1 year!!!
Answers
Step-by-step explanation:
Given as :
The time period for the car loan = t = 2 years
The rate of interest applied = r = 6% at simple interest
The interest amount = S.I = $264
Let The principal amount which Elsa borrowed = $p
Now, From simple interest method
Simple Interest = 
Or, S.I = 
Or, $264 = 
Or, $264 × 100 = 12 × p
Or, p = 
∴ p = $2200
So, The principal she borrowed = p = $2200
Hence,The Principal amount that Elsa borrowed for the car loan is $2200 . Answer
help me I will give brainiest
Answers
which of the following functions
best describes the graph
Answers
Hi ! Does the question include an image?
Answer:
This one
Step-by-step explanation:
Help me
Point A is one vertex of triangle ABC. Point B is the x-intercept of 6x-4y=-12 and point C is the y-intercept. What are points B and C? Sketch the triangle in the coordinate plane.
Answers
Answer: point b=(-2,0) point c=(0.3)
triangle graph= c at the top b on the left side bottom and a on the right side botton
Step-by-step explanation:
What is the measure of anglez in this figure?
Enter your answer in the box
430
z=
Answers
180 - 43 = 137
13. Usain Bolt is able to run 300 meters in 51 seconds. How fast is Usain's
running per second? *
1 second/6.2 meters
about 6.2 meters/second
about 7.1 meters/second
about 5.9 meters/second
Other:
Answers
Answer:
about 5.9 meters/second
Step-by-step explanation:
300 meters / 51 seconds
= 5.88
≈ 5.9
Janet's has X dollars Henny has $8 less than Janet which expression shows how to find how many dollars Hanley has
Answers
Answer:
Henny = (x-8) dollars
Step-by-step explanation:
Janet's has x dollars.
Henny has $8 less than Janet. It means, the difference between the dollars own by Janet's and Henny is 8.
Henny has = (x-8) dollars
Hence, the expression that shows dollars Hanley has is (x-8).
A train in France can travel at a speed of 217.4 miles per hour. A train in China can travel 1.23 times this speed. How fast can the train in China travel in miles per hour?
Answers
Answer:
36.1
Step-by-step explanation:
The speed of the train in china is 267.4 miles per hour.
What is a unitary method?A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.
Given, A train in France can travel at a speed of 217.4 miles per hour.
A train in China can travel 1.23 times this speed to obtain the speed of the train in china we have to multiply how many times it is faster by the speed of the train in France which is,
= (217.4× 1.23) miles per hour.
= 267.4 miles per hour.
learn more about the unitary method here :
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What is the perimeter of the triangle in units of the triangle formed by the points (-3,1), (-3,5), and (4,1)?
Answers
let's say
A(-3,1) B(-3,5) C(4,1)
we need to find the perimeter of ABC for that we find each of the sides
AB BC and AC
there is a formula to find the distance between 2 poins
let's say that a point has the structure A(x1,y1) where x=-3 and y=1 and B(x2,y2) where x2=-3 and y2=5
AB=[tex]\sqrt{(x2-x1)^2+(y2-y1)^2}[/tex]
AB=[tex]\sqrt{(-3+3)^2+(5-1)^2}[/tex]
AB=[tex]\sqrt{0^2+4^2}[/tex]
AB=4
we do the same thing for AC and BC
AC=[tex]\sqrt{(4+3)^2+(1-1)^2}[/tex]
AC=[tex]\sqrt{7^2+0^2}[/tex]
AC=7
BC=[tex]\sqrt{(4+3)^2+(1-5)^2}[/tex]
BC=[tex]\sqrt{7^2+(-4)^2}[/tex]
BC=[tex]\sqrt{49+16}[/tex]
BC=[tex]\sqrt{65}[/tex]
The perimeter is equal to the sum of the sides
P=AB+AC+BC=4+7+[tex]\sqrt{65}[/tex]=11+[tex]\sqrt{65}[/tex]
Options are:
a. 1/2
b. 2
c. -2
d. -1/2
I’ll give brainlest if you answer this correctly:)
Answers
Answer:
Step-by-step explanation:
Apply the slope formula to be sure. The slope formula is
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Filling in with our coordinates gives us:
[tex]m=\frac{-2-10}{-2-4}=\frac{-12}{-6}=2[/tex]
The slope is 2. If you don't want to use the slope formula you could just look at the line and pick 2 points the line goes through and use a slope triangle, but that's a bit more difficult to explain without the benefit of being there to point out the idiosyncrasies of it.
The population of a certain bacteria doubles every 24 hours. How many times as great is the population after 5 days as the start
Answers
Answer:
256
Step-by-step explanation:
Rudgolf goes to a store looking to buy comic books and CDs. Comic books cost 15 each and cds cost 10
Answers
Answer:
what to find the sum of Rs or
Answer:
If Rodgolf buys 3 comic books and 4 CDS, he payed a total of 85 dollars
Step-by-step explanation:
(wait but where is the question) Also 15 dollars or cents?
3*15= 45
4* 10= 40
45+40= 85
How far is a million inches in miles
(There are 5,280 feet in 1 mile)
Answers
Answer: 15.7828283 miles
Step-by-step explanation: 5280*12 = 63360. There are 63360 inches in 1 mile. 1000000/63360=15.7828283
What is the sign of 3 x y 3xy3, x, y when x > 0 x>0x, is greater than, 0 and y < 0 y<0
Answers
Answer:
The sign is negative
Step-by-step explanation:
Given
[tex]Expression = 3xy[/tex]
[tex]x > 0[/tex]
[tex]y<0[/tex]
Required
Determine the sign
The expression can be split into 3 factors
[tex](3) (x) (y)[/tex]
If x > 0 then x is positive and If y < 0 then y is negative
So, the expression becomes:
[tex](+3) (+x) (-y)[/tex]
Leave only signs
[tex](+) (+) (-)[/tex]
[tex]+ * + = -[/tex]
So, we have:
[tex](+*+) (-)[/tex]
[tex](+) (-)[/tex]
[tex]+ * - = -[/tex]
So, we have:
[tex](+) (-) = -[/tex]
Hence, the sign of the expression is negative
Take for instance;
[tex]x = 2[/tex]
[tex]y = -4[/tex]
The expression would be:
[tex]3 *2 * - 4 =-24[/tex] -- negative
Are these triangles similar?
Known angles in Triangle 1: 40º, 60º
Known angles in triangle 2: 80º, 40º
Answers
PLEASE HELP me with this <3
Answers
Answer:
Step-by-step explanation:
410 ft i think
Answer: 75.6
rounded= 76 ft
Step-by-step explanation:
Tan60= x/400 = 692.8
tan62.5= 4/400 = 768.4
x= 75.6ft
River collects old coins. He has four
less than twice as many rare nickels as
he does rare quarters. I the face value
of the coins is $3.65, Which system of
equations can be used to find n, the
number of nickels, and ç, the number of
quarters that he has?
a) 25n +59 = 365
29-4=n
b) 5n +59 = 3.65
49 +2=n
c) 5n + 256 = 365
29-4=
d) 5n + 259 = 365
49-2=n
e) 25n +59 = 365
49-2=n
Answers
9514 1404 393
Answer:
c) 5n +25q = 365
2q -4 = n
Step-by-step explanation:
The number of nickels (n) is 4 less than twice the number of quarters (q), so one of the equations is ...
2q -4 = n
The face value is 365 cents, so another equation is ...
5n +25q = 365
These equations seem to match choice C.
Find the slope of the line that passes through the points (4, 3) and (2, -7).
Answers
Answer:
slope is 5
Step-by-step explanation:
Answer: 5
Step-by-step explanation:
(4,3) (2,-7)
Put it in the equation of y2 - y1 over x2 - x1
-7-3 = -10 and 2 - 4 = -2 that will give you the fraction of -10/-2
Reduce the fraction and that will give you the answer of 5, slope = 5
In slope-intercept form it would be y - 3 = 5 (x - 4)
Hope this helps! ^^
Samantha wants to use her savings of $1,150 to buy shirts and watches for her family. The total price of the shirts she bought was $84. The watches cost $99 each. Choose the inequality that would be used to solve for the maximum number of watches Samantha can buy with her savings.
99 + 84x ≤ 1,150
99x + 84 ≥ 1,150
99x + 84 ≤ 1,150
99 + 84x ≥ 1,150
Answers
Answer: is 99x + 84 < 1,150
Step-by-step explanation:
Complete the chart below for this word problem.
Canadian Tire is selling coffee mugs. A coffee mug costs $5 and each day the price increases by $2. (The algebraic equation for this: 5+2x)
Fill out the variable chart below for graphing. The days are on the x-axis and the cost is on the y-axis.
Answers
Answer:
The y-values from top to bottom are;
3, 5 , 7, 9, 11, 13, 15
Step-by-step explanation:
Here, we want to fill out the given table
Let us have an equation linking x and y
From the question, we can have this as;
y = 5 + 2x
When x = -1
y = 5 + 2(-1) = 3
when x = 0
y = 5 + 2(0) = 5
when x = 1
we simply add 2 to the previous
= 5 + 2 = 7
when x = 2
= 7 + 2 = 9
when x = 3
= 9 + 2 = 11
when x = 4
= 11 + 2 = 13
when x = 5
y = 13 + 2 = 15
How do you solve this system by elimination? 2x + 4y =8
Answers
Answer:
The answer is x=−2y+4
Step-by-step explanation:
1) Add -4y to both sides.
2x+4y+−4y=8+−4y
2x=−4y+8
Step 2: Divide both sides by 2.
2x/2=−4y+8/2
x=−2y+4
Hope this helps
Answer this please!!!
During what times is Ann stopped? Give a reason to support your answer
Answers
whenever the line drops to the bottom of the graph the reason is because her speed drops to 0
Find the y-intercept:
-14 - 7y = -7x
Answers
Answer:
yo, its
y=x−2
Step-by-step explanation:
Answer:
it is y = x-2
Step-by-step explanation:
At the school store of magic, a wand costs 2.31$ Mr. WIzard wants to get a new wand for each of his 22 students. He has a $50 dollar bill. Does Mr.Wizard have enough money? if yes, how much money will he have left? If no, how much more money will he need
Answers
He needs 82 cents
A college cafeteria pays student cashiers $540 per hour. Cashiers earn an additional
$110 per hour for each hour worked over 35 hours per week. A cashier worked 39
hours one week and 37 hours the second week. Show and explain to the cashier how her salary calculated in this two-week period?
Answers
Given :
A college cafeteria pays student cashiers $540 per hour. Cashiers earn an additional $110 per hour for each hour worked over 35 hours per week.
To Find :
A cashier worked 39 hours one week and 37 hours the second week.
Show and explain to the cashier how her salary calculated in this two-week period.
Solution :
Week 1 :
For first 35 hours he will get fixed amount i.e $540.
Now, for next four hours he will get $110 per hour.
So, total salary, T = 540 + (110×(39 - 35)
T = $980
Week 2 :
Total salary, T = 540 + ( 110×( 37 - 35 ))
T = $760
Therefore, salary of two week period is $( 980 + 760 ) = $1740.
A triangle has the lengths of (10a+9) centimeter,(8a—3) centimeters and (10b+7). Which expression represents the perimeter in centimeters of the triangle
Answers
Answer:
P = (18a+10b+13) cm
Step-by-step explanation:
Given that,
A triangle has the lengths of (10a+9) cm, (8a—3) cm and (10b+7) cm.
We need to find an expression that represents the perimeter of the triangle.
Perimeter = sum of all sides
P = (10a+9) + (8a-3) + (10b+7)
Taking like terms together,
P = (10a+8a)+10b+(9-3+7)
= 18a+10b+13
Hence, the epresssion for the perimeter is (18a+10b+13) cm.