Answers
Answer:
number 1: {0,-6) number 2: f(-2)=25 number 3: x=±10 number 4:B, or x=-2, x=3
number 5:36 i really hope this helps! have a good day!
Step-by-step explanation:
1: 2x^2+12x +0=0
this is how you set it up
next, you have to find the a,b,and c. This is my personal favorite way of doing this.
a=2 b=12, c=0
you plug it in to the quadratic formula which is
-b±√b^2-4ac/2a
(-12)±√(12)^2-4(2)(0)/2(2)
next you have to simplify
-12±√144-0/4
take the square root of 144
-12±12/4-
then, find the solutions of them
-12+12=0
0/4=0
x=0
we are not done yet
-12-12=-24
-24/4
x=-6
your solutions are 0,-6, which is C
2: it is giving us x, which is -2
plug in -2 to the right side of the equation.
2(-2)^2-4(-2)+9
2(4)-8+9
8-8+9
f(-2)=9
3: this one is fairly simple
x^2=100
take the square root of each side
x=±10
4: you have to replace y for 0 in this one
x^2-x-6=0
all you have to do is factor it out, and it turns into
(x+2)(x-3)
then turn these so they equal 0
x+2=0, x-3=0
x=-2 x=3
your answer would be B
5: this one is fairly simple too
the formula to completing the square is (b/2)^2
you plug in b, which is 12
12/2=6
6^2=36
you would add 36 to each side.
Answer:
7) {0, -6}
1) 25
2) x= ±10
3) x= 3, -2
4) 36
5) 225/4
6) x = -3±[tex]2\sqrt{3}[/tex]
Step-by-step explanation:
1) 2x^2 -4x + 9
2(-2)^2 - 4(-2) + 9
8+ 8 + 9
25
Related Questions
help pleaseeeeeeeeeee
Answers
Answer:
I don't help ppl who just takes points from ppl with out helping :) Look at the past answers from her.
Step-by-step explanation:
Answer:
4, 7, 9, 12, 18, 32
Step-by-step explanation:
The sign shows that any number that is equal to, or more than, 36 is a valid answer. It can't be 3 because 3 x 9 is 27, and 27 is less than 36, so that wouldn't be true. 4 x 9 is 36, and 36 = 36, so that would be true, and obvoiusly all the other numbers that are over 4, when multiplied by 9, will equal more than 36, so they are all correct, except for the 3 and none answers. I hope this helps you out :)
What is the value of 5^-2?
Answers
Answer:
the answer is-25 according to me
Please mark as brainliest
[52 + (48 divided by 8)] + 17
Answers
Answer:
75
Step-by-step explanation:
48/8 = 6
6 + 52 = 58
58 + 17 = 75!
The solution to the expression [52 + (48 divided by 8)] + 17 is 75.
To solve the expression [52 + (48 divided by 8)] + 17, follow the order of operations, which is commonly remembered as PEMDAS (Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction).
Step 1: Evaluate the division inside the parentheses.
48 divided by 8 equals 6.
Therefore, the expression becomes:
[52 + 6] + 17
Step 2: Perform the addition inside the brackets.
52 + 6 equals 58. The expression simplifies to:
58 + 17
Step 3: Evaluate the final addition.
58 + 17 equals 75.
Therefore, the solution to the expression [52 + (48 divided by 8)] + 17 is 75.
Learn more about expression click;
https://brainly.com/question/28170201
#SPJ6
Find an nth-degree polynomial function with real coefficients satisfying the given conditions. If you are using a graphing utility, use it to graph the function and verify the real zeros and the given function value.
n=3
4 and 4i are zeros;
f(-1)=85
F(x) = ________
Answers
Givem that at n = 3: 4 and 4i are zero;
Then;
[tex](x - 4)(x - 4i)(x + 4i) \: (x - 4)( {x}^{2} - ( {4i)}^{2} \\ (x - 4)(x - 4i)(x + 4i) \: (x - 4)( {x}^{2} + 16) \\ (x - 4)(x - 4i)(x + 4i) \: {x}^{3} + 16x - {4x}^{2} - 64 \\ (x - 4)(x - 4i)(x + 4i) \: {x}^{3} - {4x}^{2} + 16x - 64[/tex]
Hence the function is:
[tex]f = {x}^{3} - {4x}^{2} + 16x - 64[/tex]
y = (x2 - 2x + 1)
y = (x - 1)(x - 1)
Prove that the following functions are equivalent through algebraic and numerical proof
Answers
Answer:
see below
Step-by-step explanation:
y = (x² - 2x + 1)
y = (x - 1)(x - 1)
First, recognize that the first equation is fully simplified/expanded already.
Now, we should solve for the second equation.
FOIL the expressions: first–outer–inner–last
(x - 1)(x - 1)
F: x²
O: -x
I: -x
L: 1
Combine these terms.
x² - x - x + 1
x² - 2x + 1
Notice that this equation is identical to our first equation. Therefore, the functions are equivalent.
Hope this helps!
y = (x^2 - 2x + 1)
y = (x - 1)(x - 1)
Algebraic Proof
FOIL y = (x - 1)(x - 1)
y = (x - 1) (x -1 ) = x^2 -2x + 1
Done.
Numeric Proof
Let x = 1
y = x^2 - 2x + 1
y = (1)^2 - 2(1) + 1
y = 1 - 2 + 1
y = 2 + 2
y = 0
Let x be 1 again.
y = (x - 1)(x - 1)
y = (1 - 1)(1 - 1)
y = 0
There you have it. Both equations are the same.
Nathan and his children went into a grocery store and he bought $12 worth of apples and bananas. Each apple costs $1.50 and each banana costs $0.60. He bought a total of 11 apples and bananas altogether. By following the steps below, determine the number of apples, x,x, and the number of bananas, y,y, that Nathan bought.
Determine three ways to have a total of 11 apples and bananas:
Answers
Step-by-step explanation:
X= apple y=banana 1 apple cost $1.50 and a1 banana cost $0.60 nathan buy 11banana and apple 1.50×11 = 16.5 0.60×11= 6.6. 16.5 +6.6 =23.1
write all the natural numbers from 1 to 20 what fraction of them are multiples of 3 (someone answer fast pls)
Answers
which graph represents a function? HELP ITS TIMED
Answers
Answer:
A
Step-by-step explanation:
Answer:
THE FIRST ONE
Step-by-step explanation:
NONE OF THE X REPEATS
Identify the solution set 2(-x -9) = -2x + 8
A) infinitely many solutions
B) Only one solution
C) No solution
D) impossible
Answers
Answer:
D) impossible
Step-by-step explanation:
En las elecciones locales celebradas en una ciudad, 9/25 de los votos fueron para el partido A, 3/5 de los votos para el partido B, y hubo 2000 votos más que no fueron para ninguno de estos dos partidos. Calcule el número de votantes y el número de abstenciones sabiendo que este último es 1/40 del número de personas que podían votar.
Answers
11) The difference of two numbers is 3. Their sum is 23. What are the numbers?
Answers
Answer:
Step-by-step explanation:
ill try this one in a few minutes for you.
Anthony got a shipment of various box sets of albums, but
he doesn't have enough room on his shelves for all of
them. The box sets measure 1 inch, 0.5 inch,
1 inch, 0.5 inch, ž inch, 1
inch, and 1.5 inches. He can only display box sets that
are less than Şinch.
Answers
Answer:
ccccccc
Step-by-step explanation:
X-2y3 how do u simplify that
Answers
Answer:
[tex] \frac{ {y}^{3} }{ {x}^{2} } [/tex]
Step- by- step explanations:
1) Remove parentheses.
[tex] {x}^{ - 2} {y}^{3} [/tex]
2) Use Nagative power rule.
[tex] \frac{1}{ {x}^{2} } {y}^{3} [/tex]
3) Simplify.
[tex] \frac{ {y}^{3} }{ {x}^{2} } [/tex]
Therefor, the answer is Option H.
Answer:
[tex]\frac{y^{3} }{x^{2} }[/tex]
Step-by-step explanation:
Have a great day
Ummmmmmmm I need help
Answers
Answer:
2
Step-by-step explanation:
The interquartile range is (the middle of the upper half) - (the middle of the lower half). To find this list out all of the values and find the median, then find the center of the upper half and the lower half.
1 2 2 3 3 3 4 4 5 6 Here I have made a small diagram of how you were to find the middle of each half with the underline being each half, the bold being the sides for each half, and the italicized being the value. For this question the middle of the upper half is 4 and the middle of the lower half is 2, so 4-2 = 2.
The diameter of a circle is 8 feet. What is the radius?
Answers
what is the exterior angle of #9 ?
Answers
Answer:
55
Step-by-step explanation:
3x-12=2x
+12
3x=2x +12
-2x
x=12
4(12)+ 9
48+9
=55
The ratio of the measures of the angles in a triangle is 11:2:5 find the measures of the largest angle
Answers
9514 1404 393
Answer:
110°
Step-by-step explanation:
The total of the ratio units is 11 +2 +5 = 18. These stand for the total of angles, 180°, so each ratio unit stands for 180°/18 = 10°.
The largest angle is 11 ratio units, or 11×10° = 110°.
Graph the linear equation. Can someone give me a helping hand I’m not sure how to answer this? I will mark as Brainliest
Answers
Answer:
Step-by-step explanation:
[tex]y = \frac{1}{3}x+6\\\\[/tex]
When x = 0 , y = 0 + 6 = 6
(0 , 6)
When x = 3,
[tex]y = \frac{1}{3}*3 + 6 = 1 + 6 = 7[/tex]
(3, 7)
When x = -3
[tex]y =\frac{1}{3}*(-3)+6=-1 + 6 = 5[/tex]
(-3, 5)
Plot (0,6) ; (3, 7) and (-3, 5) in the graph and join the points.
1. a circle has a circumfrance 88cm find its radius
2.a sector with angle 45 degrees has ab arc length 44cm find it radius and perimeter speratly
pls answer asap i will give u the brainliest
Answers
Step-by-step explanation:
Number 1
Circumference = 88cm
Circumference = 2πr
2πr = 88
πr = 88/2
πr = 44
22r/7 = 44
22r = (44 × 7)
r = (44 × 7)/22
r = 2 × 7
r = 14cm
Number 2
Length of arc = 44cm
Angle = 45°
L = ∅/360 × 2πr
44 = 45/360 × 2πr
44 = ⅛ × 2πr
44 = ¼ × πr
πr = 44 × 4
22r/7 = (44 × 4)
22r = (44 × 4 × 7)
r = (44 × 4 × 7)/22
r = 2 × 4 × 7
r = 2 × 28
r = 56cm
Perimeter = L + 2r
P = 44cm + 2(56cm)
P = 44cm + 112cm
P = 156cm
pamela and donna flew to arizona and bought a t-shirt for $12, scarf for $6.50, and belt for $16.75. In arizona, the sales tax rate is 8.25%. what is the total sales tax on the items?
Answers
Answer:
$38.16
Step-by-step explanation:
$12 + $6.50 + $16.75 =
35.25 US$
Sale Tax: 8.25% or $2.91
After Tax Price: $38.16
ill mark brainlist pllsss helpp
Answers
Answer:
54mi.
Step-by-step explanation:
multiply 84 x 9 = 756
divide 756/14 = 54
Answer:
It is the second option
Step-by-step explanation:
Click on the photo for explanation
For number 2:
If the figures below are similar, give the scale factor to Figure B to A.
PLEASE HELP!!!!!!!!
Answers
Answer:
3is the scale factor and it is similar
Step-by-step explanation:
Which answer is correct?
9= 4 + 5 and 9 = 2 +7
9 = 5 + 5 and 9 = 6 + 4
9=6+3 and 9 = 7+1
9 = 5 + 3 and 9 = 6 +2
Answers
Answer:
9=4+5, 9=7+2, 9=6+3 are correct
Step-by-step explanation:
Use the distributive property to simplify the expression 6(9+x)
Answers
Answer:
54+6x
Step-by-step explanation:
6(9+x)
Distribute the 6 to each term inside the parentheses
6*9 + 6*x
54+6x
Answer:
54(6x)
Step-by-step explanation:
6 times 9
6 times x
the two lines above multiplied by each other
Can someone help me with this thank you
Answers
Answer:
Step-by-step explanation:
Area of square = side * side
= 4 * 4
= 16 sq.ft
Area of triangle = [tex]\frac{1}{2}*base*height\\[/tex]
[tex]= \frac{1}{2}*4*2\\\\= 4 sq.ft[/tex]
Area of the figure = area of square + area of triangle
= 16 + 4
= 20 sq.ft
need help on this picture
Answers
Answer:
The slope is -1/2
Answer:
-(1/2) or -0.5
Step-by-step explanation:
select two coordinates. for example, (2,2) and (4,1).
do (y2 - y1) ÷ (x2 - x1).
in this case, (1 - 2) ÷ (4 - 2). you should end up with -(1/2), or -0.5
The amount y (in dollars) that you earn by working x hours is represented by the equation y = 9x. A) What is the slope? B) What does the slope mean? Interpret! C) How much money would you make if you worked 40 hours?
Answers
Answer:
360 dollars
Step-by-step explanation:
Equation;
y = 9x
A) What is the slope?
The slope in an equation is the coefficient of the x variable. In this question, the slope is 9.
B) What does the slope mean? Interpret!
The slope shows the relationship between the x and y values.
This means that for every single unit change of x, y changes by 9 times.
C) How much money would you make if you worked 40 hours?
x = working hours
y = Amount
y = 9 (40) = 360 dollars
what is the square root of 87 (round to the tenths place)
Answers
Answer:
I think it is 9.33 because the full answer is 9.327 so rounded it would be 9.33??
The wholesale price for a dozen pairs of socks is $4.30. The retail price for the same dozen pairs of socks is $9.25. What is the mark-up the retailer used? Write your answer as a complete sentence.
Answers
Answer:
the mark up used by the retailer is 115.12% of the wholesale price
Step-by-step explanation:
Mark-up is the percentage increase of the retail price over the wholesale price
Mark-up = (difference between retail and whole sale price / retail price ) x 100
difference between retail and whole sale price = $9.25 - $4.30 = $4.95
(4.95 / 4.3) x 100 = 115.12%.
Jonah has a piece of string that is 70 inches long. He cuts the string into 6 equal pleces. How many Inches long is each piece of string?