Evaluate the equation y=2x2 - 2x + 7 for x=-3
Answers
Answer:
31
Step-by-step explanation:
y=2x^2 - 2x + 7
Let x= -3
y=2(-3)^2 - 2(-3) + 7
=2 (9) +6 +7
= 18 +6+7
= 31
[tex]\tt{y = 2 {x}^{2} } - 2x + 7 \: ,when \: x \: = \: - 3[/tex]
Let's try![tex]\quad \quad \quad \quad \tt{y = 2 {x}^{2} } - 2x + 7[/tex]
[tex]\quad \quad \quad \quad \tt{y = 2 {( - 3)}^{2} } - 2( - 3)+ 7[/tex]
[tex]\quad \quad \quad \quad \tt{y = 2(9) +6 + 7}[/tex]
[tex]\quad \quad \quad \quad \tt{y = 18 +6 + 7}[/tex]
[tex]\quad \quad \quad \quad \tt{y = 24 + 7}[/tex]
[tex]\quad \quad \quad \quad \tt{y = 31}[/tex]
Hence, the answer is:[tex]\quad \quad \quad \quad \boxed{\tt{\color{green}y = 31}}[/tex]
_______
#LetsStudy
Related Questions
Liz flips a coin 60 times. The coin lands heads up 36 times and tails up 24 times. The EXPERIMENTAL probability of the coin landing TAILS up is ___%.
Answers
Answer:
60% because... it is correct
The area of a rectangle is represented by x2 + 2x - 3. The width of the rectangle is x - 1. What is the length of the rectangle?
A. X+3
B. x-3
c. x+4
D.X-2
Answers
Answer:
Option A. x + 3
Step-by-step explanation:
From the question given above, the following data were obtained:
Area (A) = x² + 2x – 3
Width (W) = x – 1
Lenght (L) =?
The area of a rectangle is given by:
Area (A) = length (L) × Width (W)
A = L × W
With the above formula, we can obtain the lenght of the rectangle as follow:
Area (A) = x² + 2x – 3
Width (W) = x – 1
Lenght (L) =?
A = L × W
(x² + 2x – 3) = L(x – 1)
Divide both side by (x – 1)
L = (x² + 2x – 3) / (x – 1)
Please see attached photo for explanation
L = x + 3
Thus, the length of the rectangle is x + 3
Frereise !
Calculate the coordinates of the intersection point of the two lines (4.) and ((,)
1) (d): y = 4x-2 and (d): y = 8v+6 2)(a); y .-2x + 7 and (d): y = 3x - 3
3)(y *d
4) (4): y
and (d): y -
1
1
1
3
4
5
Exercise 2
1) The straight line (d): y = 5x + 2 cuts (x'x) and (y'y) at two points E and F respectively,
Calculate the coordinates of E and F
2) The straight line (d): y = cuts (x'x) and (y'y) at two points E and F respectively,
Calculate the coordinates of E and F
3
5
.
: y
2
Answers
Answer:
Mastong by skoger넞호오ㅗ노아ㅗ너너엉
Find the greatest common factor of 6n2 and 10m.
Answers
Answer:
2
Step-by-step explanation:
Which of the following is the measure of ZCBA?
C
39
B
A
A. 39°
B. 45°
C. 90°
D. 78°
Answers
Answer:
78
Step-by-step explanation:
answer is in above photo
If f(x) = 3x + 2, what is f(5)?
Answers
Answer:
17
Step-by-step explanation:
f(x) = 3x + 2
Let x=5
f(5) = 3*5 + 2
Multiply first
= 15+2
Then add
= 17
Find the distance from the person to the tower, given that the nested triangles are similar.
PLEASE HELP ASAP!!!!! due in 5 minutes
Answers
Step-by-step explanation:
DE/CE=AB/CB
6/10=100/(CE+BE)
6/10=100/(10+BE)
reducing fraction
3/5=100/(10+BE)
3(10+BE)/5 =100
3(10+BE)=500
BE=(500/3)-10
BE=470/3
BE=156.67ft
The pattern 96, 92, 88, 84, ________ follows the "subtract 4" rule. Study the pattern to find traits that are not obvious in the rule. Explain.
HELP ASAP
Answers
Answer:
80
Step-by-step explanation:
add from bottom to the top
Identify the slope of the line graphed below?
Answers
In circle P, BC=24 ft.
What is the length of arc AC?
Answers
AC = 360
what is x
−9.2= 2.5 − 3.9 x
Answers
Answer:
3.08 = x
Step-by-step explanation:
-9.2 = 2.5 - 3.9x
-9.2 + (-2.5) = -3.9x
-12 = -3.9x
-12/-3.9 = x
3.08 = x
Hope this helps!
categorize the following graph is linear increasing, linear decreasing, exponential growth, or exponential decay.
Answers
Answer:
Exponential Decay is the answer
When the fifth term of an arithmetic sequence whose  common difference is D=six and whose first term is a1 =four
Answers
Answer:
28 is the answer
Step-by-step explanation:
in an arithmetic sequence nth term An is given by the equation
[tex]an \: = a1 + (n - 1) \times d[/tex]
where A1 is first term and d is common difference. thus from the question we have
[tex]a5 = 4 + ((5 - 1) \times 6) \\ = 4 + (4 \times 6) \\ = 4 + 24 \\ = 28[/tex]
PLEASE HELP FAST!!!!!!!!!
Answers
Answer:
First: [tex]y = \frac{4}{7} x + 2[/tex]
Second: [tex]y = -\frac{1}{7} x + 2[/tex]
Third: [tex]y = x + 2[/tex]
Fourth: [tex]y = \frac{1}{7} x + 2[/tex]
Pls help I need this
Answers
Answer:
what you need help in we see nothing
1.) Any measure representing the center of a set of data arranged in a decreasing or increasing order of magnitude.
2.) Commonly referred to as the average of all values.
3.) Middle value in the set of data arranged in increasing or decreasing order.
4.) Contains two modes.
5.) Most frequently occurring score.
pls answer what are these things called
I'll give you brainiest
Answers
A family that is known to have two children is selected at random
from amongst all families with two children. Find the probability that
both children are boys, given that there is a boy in this family. Please help me solve this problem.
Answers
Answer: one outta a mil
Step-by-step explanation:
Help plz assap with these 4 questions :(:)))
Answers
Answer: -The diameter: 2m
-The radius: 0.5m
-"name":SG
-The radius:12m
Answer:
5,D,2,24
Step-by-step explanation:
qn1=5
qn2=D
qn3=2
qn4=24
EXERCISE 6
Factorise the following expressions:
Answers
Answer:
the answer is the color 76
which recursive formula can be used to represent the sequence 2,4,6,8,10.... ?
a
b
c
or d
Answers
Step-by-step explanation:
the (A) formula is preferable to use and is the correct one
36) In the diagram, the coordinates of endpoints A and B are (-3, 9) and (9,5). Find the length from A to E?
Answers
Step-by-step explanation:
the length of AB = √(9+3)²+(5-9)²
= √144+16=√180 = 6√5
the length from A to E = ⅜× 6√5
= 2.25 √5 or 5.03
Length of AB,
→ √(9+3)² + (5-9)²
→ √144+16
→ √180
→ 6√5
Length from A to E,
→ ⅜ × 6√5
→ 2.25 √5
→ 5.03
write 2x+5/x + 3/x+3 as a single fraction to it's simplest form
Answers
oky oky oky oky oky oky
sana makatulonh
In 24 games, Jamie has 48 scoring attempts. Which unit rate describes Jamie's scoring attempts? A) 1/2 of a scoring attempt per game. B) 2 scoring attempts per game. C) 24 scoring attempts per game. D) 72 scoring attempts per game
Answers
Answer:
The answer is B) 2 scoring attempts per game.
what is the difference of the polynomials?
{m^2n^2-7}-(mn+4)
Answers
Answer:
[tex]m^{2} n^{2} - mn-11[/tex]
Step-by-step explanation:
Simplify the expression.
The four factors of 91
Answers
Answer:
1,7,13,91
Step-by-step explanation:
thats the four factors if 91
Find the value of x in The parallelogram.
Answers
Answer:
48 degrees
Step-by-step explanation:
x+132 should be equal to 180, property of a parallelogram (and same side interior angles)
180-132=48
Answer:
x = 48
Step-by-step explanation:
Consecutive angles in a parallelogram sum to 180° , so
x + 132 = 180 ( subtract 132 from both sides )
x = 48
plzzzzz help______________
Answers
Answer:
iii
y=70
x=110
is that what you needed help with?
3x-4=4 What is the value of X
Answers
Answer:
3x-4=4
3x=8
x=8/3
hope this helps
have a good day :)
Step-by-step explanation:
alicia is a nurse in 2016 she earned a monthly salary of £1750
Answers
Answer:
Step-by-step explanation:
Given :
Salary in 2016 = 1750
Pay rise in 2017 = 2%
Monthly salary = (1 + 2%) of 175= 1.02 * 1750 = 1785
Hours worked per week = 45 hours
Number of weeks = 48 weeks
The total hours worked for the year :
(48 * 45) = 2160 hours
Average pay per hour for the year ;
(Average Salary earned over 12 months) /total number of hours worked for the year
(1785 * 12) / 2160
= 21420 / 2160
= 9.9166 per hour
= $9.92 per hoj
AHHHHHHHHH PLEASE HELP T-T
I'LL MARK BRAINLIEST FOR THE BEST ANSWER!!