Answer:
95.7%
Step-by-step explanation:
i think im not too sure im sorry if you get it wrong
I do not get this question
Answer:
D
is the answer
If f(x) = 5x – 7 and g(x) = VX – 8,
what is (fºg)(9)?
Enter the correct answer.
?
Answer:
a
Step-by-step explanation:
A parabola has its minimum point at (3,-5) and the y coordinate of the y-intercept is -2.
What is the equation of the parabola?
Answer:
y = [tex]\frac{1}{3}[/tex] x² - 2x - 2
Step-by-step explanation:
x-coordinate of the vertex of a parabola is ( [tex]- \frac{b}{2a}[/tex] )
y = f(x) = ax² + bx + c
(x, y) ∈ f(x)
~~~~~~~~~
{ (0, - 2), (3, - 5) } ⊂ { (x, y): y = ax² + bx + c }
a(0)² + b(0) + c = - 2 ⇒ c = - 2
a(3)² + b(3) + ( - 2) = - 5
9a + 3b - 2 = - 5 ⇒ 3a + b = - 1
[tex]- \frac{b}{2a}[/tex] = 3 ⇒ b = - 6a
[tex]\left \{ {{3a+b=-1} \atop {b=-6a}} \right.[/tex]
3a + ( - 6a) = - 1
a = [tex]\frac{1}{3}[/tex]
b = - 2
y = [tex]\frac{1}{3}[/tex] x² - 2x - 2
The equation of the parabola for the given values is y = x²/3 - 2x - 2.
What is a parabola?A parabola is the part of the conic section of which the points are equidistant from a fixed line called as directrix and a fixed point known as focus.
The general equation for the parabola is given as,
y = ax² + bx + c
Where c is the y-intercept.
Substitute c = -2 as per the question to obtain,
y = ax² + bx - 2
At (3,-5) the parabola has minimum value which implies y' = 0 as below,
y' = 2ax + b = 0
Substitute x = 3 to obtain,
2a × 3 + b = 0
=> -6a = b
And, y = -5 at x = 3 which gives,
-5 = 3²a + 3b - 2
=> 9a + 3b = -3
Substitute b = -6a to get,
9a - 18a = -3
=> a = 1/3
Which implies b = -6 × 1/3 = -2
Now, the equation for the parabola becomes as below,
y = x²/3 - 2x - 2
Hence, the required equation of the parabola is obtained as y = x²/3 - 2x - 2.
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which of the following correctly gives the center and radius of the circle defined by the equation (z-7)^2 = 10?
Hi there!
[tex]\large\boxed{\text{Center: (7,2); radius =} \sqrt{10}}}[/tex]
We know that the standard form of the graph of a circle is:
(x - h)² + (y - k)² = r²
Where:
h = x-coordinate of center
k = y-coordinate of center
r = radius
We can identify the following from the given equation:
(x - 7)² ⇒ h = 7
(y - 2)² ⇒ k = 2
r² = 10 ⇒ r = √10
Thus, the correct answer is C.
Answer:
its the third one C
Step-by-step explanation:
just did it
Which system of equations could be represented by the graph?
Steve earned $7.40 per hour working his paper route. The first week, he worked 16 hours. After getting paid, he put $105 in the bank and spent the rest on rides at the carnival. Each ride cost $0.75. How many rides did Steve ride at the carnival?
Answer:17
Step-by-step explanation: Multiply Steve’s hourly wage ($7.40) by the hours he worked in a week (16 Hours) that would give you your weekly earnings which would be (7.40x16=$118.40) Then subtract what he saved in the bank from your total (118.40-105=$13.40) then you would divide $13.40 (his leftover money) by $0.75 to find the total number of carnival rides he could ride (13.40/0.75=17.86 rides and because he cannot ride 17 and 86 hundredths of a ride he would be able to ride 17 carnival rides.
PLEASE CLICK THE INAGE I NEED HELP PLEEEAAASSSE!!!
Answer:
Question 3: There are 12 boys in the class.
Question 4: 120 cookies were not oatmeal raisin.
Question 5: Target offers the best deal.
Step-by-step explanation:
If the ratio of girls to boys is 3:2, and there are 18 girls, that means there will be [tex]\frac{18}{3}[/tex] * 2 = 6 * 2 = 12 boys.
Because there are 200 cookies total, and [tex]\frac{2}{5}[/tex] of them are oatmeal raisin, that means that [tex]\frac{3}{5}[/tex] of the cookies aren't oatmeal raisin. 200 * [tex]\frac{3}{5}[/tex] = 40 * 3 = 120 cookies that aren't oatmeal raisin.
The cookies at Kroger have a unit rate of $0.45 per cookie, the cookies at Meijer have a unit rate of $0.50 per cookie, the cookies at Walmart have a unit rate of $0.38 per cookie, and the cookies at Target have a unit rate of $0.20 per cookie. So Target has the better buy.
A family had 1/3 of pizza left over. Later 3 people shared the remaining 1/3 equally. What fractional part of the whole pizza did each get
Answer: 1/9 pizza portions
Step-by-step explanation:
The pizza was left with only 1/3 of it and 3 people shared this.
The fractional part of the whole pizza that each of the three people ate is therefore:
= Percentage of who pizza left / Number of people
= 1/3 ÷ 3
= 1/3 * 1/3
= 1/9 pizza portions
I need help guys. I don't understand this. I tried to work this out but what i got didn't have an option for it. Can you leave all the notes. Anybody????????????
Answer:
7.5 i belive
Step-by-step explanation:
area= lenghthx width thats the formula 3mm converted is 3 cm 3cmx2.5=7.5
PLEASE HELP ME ITS MY LAST QUESTION
Answer:
30 degrees
Step-by-step explanation:
yes
ASAP question in the picture
Answer:
try answer C 33ft
Step-by-step explanation:
What is the domain of the function Y = 3 In * graphed below?
Answer:
(0, infinity)
Step-by-step explanation:
Keep in mind that the input to the ln function can never be 0 or below. The coefficient 3 has no effect on the domain. The domain of the function shown is (0, infinity).
The domain of the function y = 3 log x is x > 0.
Option A is the correct answer.
What is a function?A function is a relationship between inputs where each input is related to exactly one output.
Example:
f(x) = 2x + 1
f(1) = 2 + 1 = 3
f(2) = 2 x 2 + 1 = 4 + 1 = 5
The outputs of the functions are 3 and 5
The inputs of the function are 1 and 2.
We have,
y = 3 log x
The domain of the function y = 3 log x can never be less than zero.
So,
The domain is from 0 to ∞.
Thus,
The domain is (0, ∞).
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Erica has three times as many pieces of candy as Nellie. Together they have 248 pieces of candy. Write and solve and equation to find out howl much candy Nellie has.
Nellie has 62 pieces of candy,
62x3=186
186+62=248
If you if you take away 25% of the radius of the suspension how much raise would you have left over of the hundred percent you took away from 100
Answer:
75
Step-by-step explanation:
25% of 100 is 25
100 - 25 = 75
Give me brainllest
I need help solving this system
Answer:
x=3 and y=-7
Step-by-step explanation:
just cause lol
Answer:
(x, y) = (3, -7)
Step-by-step explanation:
[tex]\left \{ {{x - 3y = 24} \atop {5x + 3y = -6}} \right.[/tex]
[tex]\left \{ {{x-3y=24} \atop {3y=-6-5x}} \right.[/tex]
[tex]x-(-6-5x)=24[/tex]
[tex]x=3[/tex]
[tex]3y=-6-5(3)[/tex]
[tex]y=-7[/tex]
[tex](x,y)=(3,-7)[/tex]
CHECKING IF ANSWER IS CORRECT:
[tex]\left \{ {{3-3(-7)=24} \atop {5(3)+3(-7)=-6}} \right.\\\left \{ {{24=24} \atop {-6=-6}} \right. \\(x,y)=(3,-7)[/tex]
There is your answer with steps :)
David had $30 to spend on three gifts.He spent 10 ¼ dollars on gifts A and 5 ⅘ dollars on gifts B.How much money did he have left for gifts C.
Answer: $13.95
Step-by-step explanation:
1/4 of a Dollar is 25 cents
4/5 of a Dollar is 80 cents
30 - 10.25 = 19.75
19.75 - 5.80 = 13.95
David has $13.95 to spend of Gift C
could the table of x y pairs be generated by a linear function. yes or no
Question: Could the table of x y pairs be generated by a linear function?
Answer: Yes
hope it helps...
have a great day.
Question 1
1. Which expression is equivalent to 4(2x + 3)?
A. 4 + 2x + 4 +3
B. 8x + 12
C. 8x + 3
D. 4 + 2x + 12
СА
OB
oc
CD
Answer:
B.) 8x + 12
Step-by-step explanation:
Using the Distributive Property the 4 is multiplied by each number inside the parentheses
4*2x = 8x
4*3 = 12
8x+12
Answer: it’s B
Step-by-step explanation: lol I didn’t want to do the math
hi i need to know if i did this correctly, thanks.
Step-by-step explanation:
Hi,
Store A: y = 9p
Store B: y = 9p + 5
Store C: y = p + 5
Store D: y = p + f
Second Part:
Store A: T = 9n
Store B: T = 9n + 5
Store C: T = n + 5
Store D: T = p + f
I hope this helps :)
In a race a cyclist travels 3/8 of the distance in the first hour and 1/3 of the distance in the second hour. What fraction of the total distance has he travelled? What fraction of the total distance does he need to travel in the third hour to complete the race.
Answer:
7/24
Step-by-step explanation:
Answer:
Distance traveled:
3/8 + 1/3 = 9/24 + 8/24 =17/24Remaining distance:
1 - 17/24 = 24/24 - 17/24 =7/244 people are going to a dinner party. Each person at
the party will eat pound of cake. If you can only buy
whole pounds of cake, how many pounds should you
buy?
Answer:
92 pounds
Step-by-step explanation:
Here is the complete question ;
4 people are going to a dinner party. Each person at the party will eat 23 pound of cake. If you can only buy whole pounds of cake, how many pounds should you buy?
total pounds to be bought = number of people at the party x total pounds they would eat
4 x 23 = 92 pounds
PLANTS The table shows the heights of
sixteen corn stalks.
3. What were the heights of the shortest
and tallest stalks?
Answer: blue, to love me, to nice, to i love you, to be a good boy and suck.
Step-by-step explanation:
hi I am girl
At noon, the temperature was 0° Fahrenheit. The temperature changed by −1.2°F every hour for 8 hours. What was the temperature in degrees Fahrenheit at the end of the 8-hour period?
Enter your answer in the box.
Answer:
the tempature after eight hors would -9.6
On a mathematics test, Michael received a score of 75%. If each problem counted equally, and Michael had 9 problems correct, then how many problems were on the test?
Answer:
There were 12 problems.
Step-by-step explanation:
75/100=9/x
75x=900
x=12
A history teacher is writing a test worth 100 points. She uses multiple-choice questions worth 6 points
each and true/false questions worth 2 points each. She wants the test to have three times as many
multiple-choice questions as true/false questions. Let m represent the number of multiple-choice
questions on the test, and let t represent the number of true/talse questions. Which system of
equations can be used to find how many each type of question she should write?
6m + 2t = 100
m=t+3
6m + 2t = 100
m = 3t
3m+t=100
m=31
6m + 2t = 100
t = 3m
Answer:6m + 2t= 100
t=3m
Step-by-step explanation:
who ever answer this get a brainliest and a thank you i need it answered asap
Answer:
a = 9
Step-by-step explanation:
For solve the problem we can use the Pythagorean theorem in this way
a^2 + (3√3)^2 = (6√3)^2
If we solve the equation we have
a^2 + 27 = 108
a^2 = 81
a = +/-9
we take only the the positive value because a length can’t be negative
a = 9
Has one of your eyelash wishes ever came true?
Answer:
Nope
Step-by-step explanation:
If they did, school wouldn't be a thing and I would be living in the Marvel universe lol
Find the missing measure of the arc formed by the endpoints of a central angle.
Answer:
The missing measure of the arc is 125°.
Step-by-step explanation:
Since the circle is 360°, you would first subtract 360 by the degrees given: 360-115-35-85 and the sum is 125. Then, you would set 125 equal to -32x-3 to solve for x.
[tex]125=-32x-3[/tex]
[tex]+3[/tex] [tex]+3[/tex]
-----------------------
[tex]\frac{128}{-32} =\frac{-32x}{-32}[/tex]
[tex]x=-4[/tex]
The missing measure of the arc is 125°.
does the graph below represent y as alinear function of x. yes or no
9514 1404 393
Answer:
No
Step-by-step explanation:
The graph is not a straight line with define slope, so does not represent a linear function.
__
The graph has segments that are straight lines. It is what we call "piecewise linear."
What is the slope? Please help..
Answer:
its 3, bae
Step-by-step explanation:
trust me on this one
