Which point is an x-intercept of the quadratic function
f(x) = (x – 3)(x + 2)?
A(3, 0)
B(0, 2)
C(0, -2)
D(-3, 0)
Answers
Answer:
A
Step-by-step explanation:
The x-intercepts are the roots of a parabola. Specifically, when a parabola is in the form [tex]f(x)=(x-h)(x-k)[/tex], where h and k are real numbers, the roots are [tex](h, 0)[/tex] and [tex](k, 0)[/tex].
Our parabola has a plus, though. That's a problem, right?
No! [tex]x+2=x-(-2)[/tex], so there's no problem. So, our roots are [tex](3, 0)[/tex] and [tex](-2, 0)[/tex].
So, the answer is A and we're done!
Related Questions
Please help asap! Correct answer gets brainliest
Answers
Answer:
C, 35 yellow books
Step-by-step explanation:
There are 10 books in total
if 3 of them is equal to 21, then one book in the picture is worth 7 books
5 yellow books can be seen thus 7x5=35
Answer:
C. 35 yellow books
Step-by-step explanation:
Let u be 1 unit.
3u = 21
u = 21÷3
=7
5u = 7×5
= 35
identify the slope and the y-intercept. Show your complete solution.
7x - 2y = 13
Answers
Solving Steps:
The equation must be put in slope-intercept form to easily identify the slope and y-intercept.
Slope-intercept form: y = mx + b
7x - 2y = 13
-2y = -7x + 13
y = 3.5x - 6.5
Improper fraction form: y = 7/2x - 13/2
Use the distributive property to simplify the expression -8(5 + 9). Show your work.
Answers
-8(5+9)
-40-72=112
Answer:
-112
Step-by-step explanation:
Plz help it’s due tonight!!!
Answers
The picture below shows how to solve for the missing values and what each variable is equal to.
b)Using the formula from part a, calculate the retail price for each quantity range.
( Hope this helps guys )
ANSWER:
$45.00
$41.40
$37.80
$34.20
$30.60
EXPLANATION:
Ok so the first box is 25.00 your going to multiply .80 whatever your awnser is for that which is 20 then you take that and add the 25 from the box and get 45 and that’s your awnser and just repeat the process for the other boxes .
Answers
Answer:
man, thanks alot really helped me I was struggling with this one. Couldnt find any answers
Step-by-step explanation:
I need help I’m going to fail
Answers
Answer:b
Step-by-step explanation:
The temperature T of a refrigerator is at least 35°F and at most 41°F. Write a compound
inequality and an absolute value inequality for the temperature of the refrigerator.
Answers
The compound inequality for the temperature T of a refrigerator that is at least 35°F and at most 41°F is 35 ≤ T ≤ 41
A compound inequality has two inequality statements joined together
The the temperature of the inequality is represented by T
The temperature T of a refrigerator is at least 35°F and at most 41°F
This means that the temperature falls between 35°F and 41°F
Since the temperature, T, is at most 41°F
This can be mathematically interpreted as
T ≤ 41
The temperature, T, is at least 35°F
35 ≤ T
Combining the two inequality statements 35 ≤ T and T ≤ 41, the compound statement formed is:
35 ≤ T ≤ 41
The compound inequality for the temperature T of a refrigerator that is at least 35°F and at most 41°F is 35 ≤ T ≤ 41
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You and a friend get food you have $100 the food 60.85 and the tax is $8 and you wanna leave a 20 tip how much money will you have left
over?
Answers
Answer:
11.15$
Step-by-step explanation:
60.85+8+20= 88.85
100-88.85=11.15
Please <3 my Answer B )
How does the perimeter and area change
if each dimension is doubled? Explain!
Answers
Answer:
By doubling the dimension R, we'll actually change the area by a factor of 4 (it will become four times as large). Notice that this same change to the radius would only change the original circle's perimeter (2πR) by a factor of 2.
Step-by-step explanation:
Evaluate 3|-3|.
O 6
O -9
O -6
O 9
Answers
Answer:
[tex]D) \:9[/tex]
Step-by-step explanation:
[tex]3\left|-3\right|[/tex]
Apply absolute rule: [tex]\left|-a\right|=a[/tex]
[tex]\left|-3\right|=3[/tex]
Multiply:
[tex]3\times3[/tex]
[tex]=9[/tex]
______________________
The money used in Jordan is called the dinar. The exchange rate is $3 to 2 dinars. Find how many dollars you would recieve if you exchanged 22 dinars
Answers
Answer:
He would have received $33 if he exchanged 22 dinars
Step-by-step explanation:
Use the equation to complete an algebraic proof that proves the answer is x = 7/6. Write your proof in your journal and upload your answer. You will be awarded 5 points for the statements and 5 points for the reasons.
2x+65=4x−3
Answers
Answer:
Step-by-step explanation:
Show that if 3x – 7 = 5, then x = 4.
Here, our given statement is 3x – 7 = 5, and we're asked to prove x = 4.
x=4
Statements Reasons
1. 3x – 7 = 5 Given
2. 3x – 7 + 7 = 5 + 7 Addition of 7 to equation (1)
3. 3x + 0 = 5 + 7 Substitution of –7 + 7 = 0 into (2)
4. 3x = 5 + 7 Substitution of 3x + 0 = 3x into (3)
5. 3x = 12 Substitution of 5 + 7 = 12 into (4)
6. 3x⁄3 = 12⁄3 Dividing equation (5) by 3
7. x = 12⁄3 Substitution of 3x⁄3 = x into (6)
8. x = 4 Substitution of 12⁄3 = 4 into (7)
Is there such a thing as being too descriptive? Yep, and that was it, since over half the proof was devoted to telling the reader how to do arithmetic. We'll typically take numerical computation for granted, and write proofs like this:
Please solve the problem and show all steps, thank you.a-c=d+r, for a
Answers
Answer:
a = d + r + c
Step-by-step explanation:
a - c + c = d + r + c
a = d + r + c
K(–5, –9); rotation 180° about the origin, translation 3 units left
Answers
Answer:
Step-by-step explanation:
Rotate 180 degrees about the origin
X(x,y) ====> X'(-x,-y)
K(-5 , - 9) = K ' (- -5, - - 9)
K' (5,9)
3 Units Left.
y is unchanged.
x becomes x - 3
K'(5,9) ===>k" (5 - 3,9)
k"(2,9)
The leftward motion does not look done the same way as moving a parabola left. But you are just changing the x value to move a point left. You are not imposing other rules on the figure.
PLS HELP WILL MARK BRAINLIEST NO FAKE ANSWERS
What is the degree of 17a⁵ ym²
Answers
Answer:
Polynomial Degree: 8 I hope this helps! : )
please help me solve for X
Answers
Answer:
-7
Step-by-step explanation:
x= 180-90-70-27
x= -7
Consider the matrices
Show that multiplication of matrices is not commutative be determining the product matrices ST and TS. Enter your answer by filling in the boxes.
Answers
Answer:
Answer attached
Step-by-step explanation:
ST
3*-2 + 4*-4 = -22 3*0 + 4*5 = 20
-1*-2 + -2*-4 = 10 -1*0 + -2*5 = -10
try TS by yourself
the product of two given matrices is [tex]ST=\left[\begin{array}{cc}-22&20\\10&-10\end{array}\right][/tex] and [tex]TS=\left[\begin{array}{cc}-6&-8\\-17&-26\end{array}\right][/tex].
Given that,
[tex]S=\left[\begin{array}{cc}3&4\\-1&-2\end{array}\right][/tex] and [tex]T=\left[\begin{array}{cc}-2&0\\-4&5\end{array}\right][/tex]
What is the product of two matrix?The product of two matrices A and B is defined if the number of columns of A is equal to the number of rows of B. If both A and B are square matrices of the same order, then both AB and BA are defined. If AB and BA are both defined, it is not necessary that AB = BA.
Now, [tex]ST=\left[\begin{array}{cc}3&4\\-1&-2\end{array}\right] \times \left[\begin{array}{cc}-2&0\\-4&5\end{array}\right][/tex]
[tex]ST=\left[\begin{array}{cc}(-6-16)&(0+20)\\(2+8)&(0-10)\end{array}\right][/tex]
[tex]ST=\left[\begin{array}{cc}-22&20\\10&-10\end{array}\right][/tex]
[tex]TS= \left[\begin{array}{cc}-2&0\\-4&5\end{array}\right]\times \left[\begin{array}{cc}3&4\\-1&-2\end{array}\right][/tex]
[tex]TS=\left[\begin{array}{cc}(-6-0)&(-8-0)\\(-12-5)&(-16-10)\end{array}\right][/tex]
[tex]TS=\left[\begin{array}{cc}-6&-8\\-17&-26\end{array}\right][/tex]
Therefore, the product of two given matrices is [tex]ST=\left[\begin{array}{cc}-22&20\\10&-10\end{array}\right][/tex] and [tex]TS=\left[\begin{array}{cc}-6&-8\\-17&-26\end{array}\right][/tex].
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plz help i’ll give brainliest
Answers
Answer:
is equivalent
Step-by-step explanation:
Answer:
the first one
Step-by-step explanation:
Steven collected $5.40 from 3 people for a train ride. How much was the train ride per person?
A. $2
B. $1.80
Answers
all you have to do is divide $5.40 and 3 and that will give you $1.80
Forty-five people volunteered, but 200% of that number are needed. How
many people are needed?
Answers
That’s the answer
Pls explain
Pls and thank
Answers
Step-by-step explanation:
A=l×w
A=3 3/4×1 1/2
A=5.625
The value of (√5 + √2)2
(A) 7+ 2√5 (B) 1+ 5√2 (C) 7+2√10 (D) 7-2√10
Answers
[tex]▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ { \huge \mathfrak{Answer}}▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ [/tex]
Using identity :
[tex] {(a + b)}^{2} = {a}^{2} + b {}^{2} + 2ab[/tex][tex]( \sqrt{5 }{+ \sqrt{2{}^{} } } ) {}^{2} [/tex][tex]( \sqrt{5} ) {}^{2} + ( \sqrt{2} ) {}^{2} + 2( \sqrt{5} )( \sqrt{2} )[/tex][tex]5 + 2 + 2 \sqrt{10} [/tex][tex]7 + 2 \sqrt{10} [/tex]therefore, the correct choice is :
[tex] \mathrm{C.) \: \: 7 + 2 \sqrt{10} }[/tex][tex]( \sqrt{5} + \sqrt{2} {)}^{2} \\ [/tex]
[tex]by \: \: \: using \: \: \: the \: \: \: formula \: \: (a + b) ^{2} = {a}^{2} + 2ab \: + {b}^{2} \: \: we \: \: \: get \\ ( \sqrt{5} {)}^{2} + 2( \sqrt{5}) \: (\sqrt{{2)}} + ( \sqrt{2) }^{2} \\ = \sqrt{5} \times \sqrt{5} + 2 \sqrt{5 \times 2} + \sqrt{2} \times \sqrt{2} \\ = 5 + 2 \sqrt{10} + 2 \\ = 7 + 2 \sqrt{10} [/tex][/tex]
Answer:(C) 7+2√10
Someone pls help me I will make you as brain
Answers
work out the value 4^2 x2^4
Answers
Answer
The answer to this equation would be 64. '^' just means multiplied by. It has the same mathematical definition as the multiplication sign.
Step-by-step explanation:
USING PEMDAS (NO PARENTHESES)
4 x 2 x 2 x 4
8 x 2 x 4
16 x 4
64
USING PEMDAS (WITH PARENTHESES)
(4 x 2) x (2 x 4)
(8) x (2 x 4)
(8) x (8)
64
Is this relation a function
Answers
Answer:
true......................
Answer:
True. Hope it helps.
Please mark as brainliest.
Solve the rational equation x divided by 2 equals x squared divided by quantity x minus 2 end quantity, and check for extraneous solutions.
No solution
x = 0 and x = −2
x = −2; x = 0 is an extraneous solution
x = 0; x = −2 is an extraneous solution
Answers
The value of x in the equation [tex]\frac{x}{2} = \frac{x^2}{x - 2}[/tex] are x = 0 and x = -2
How to solve the rational expression?The expression is given as:
[tex]\frac{x}{2} = \frac{x^2}{x - 2}[/tex]
Cross multiply
[tex]x(x - 2) =2 * x^2[/tex]
Open the bracket
[tex]x^2 - 2x =2x^2[/tex]
Collect like terms
[tex]- 2x =2x^2 - x^2[/tex]
Evaluate the like terms
[tex]- 2x =x^2[/tex]
Rewrite as:
[tex]x^2 + 2x =0[/tex]
Factor out x
x(x + 2) =0
Expand
x = 0 or x + 2 = 0
Solve for x
x = 0 or x = -2
Hence, the value of x are x = 0 and x = -2
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you have 120 cows and 90% of them are female how many female cows do you have
Answers
Answer: 108
Step-by-step explanation:
If 90% are female, that means that female = 90% of 120, or 90/100 x 120
90/100 x 120 = 108, meaning that there are 108 female cows.
Lucy wants to try and get a hole-in-one on this hole. She knows that she could just the shot in two strokes by going straight down the green 220 yards and then 165 yards. How many yards is it from the tee area to the hole?
Answers
Answer:
385 yards
Step-by-step explanation:
220+165=385
simplify the expression 6(a-4+2b)
Answers
Answer:
6a + 12b - 24
Step-by-step explanation:
PLEASE HELP WITH PART B!!
can you also explain y and x, I dont understand part B >
Answers
A. I would suggest including all units in your answer. Both answers are correct but the unit is also important.
average rate of change:
($750 - $350) / (2014 - 2010) = $400 / (4 years) = $100 per year
initial value:
$350
B. Take 2010 to be year 0. Then for year x = 0, the fee is y = $350.
If the fee increases at a rate of $100 per year, this means that when x = 1, y = $350 + $100 = $450. So the graph of the function that models the dog-walking fee is a line that passes through the points (0, 350) and (1, 450), adn the slope of this line is
(450 - 350) / (1 - 0) = 100/1 = 100
which is the same as the average rate of change.
Using the point-slope formula for a line, the equation you want is then
y - 350 = 100 (x - 0)
y - 350 = 100x
y = 100x + 350