Answer: 24 questions
Step-by-step explanation:
Let the number of questions on the quiz be represented by x. This means that 75% of x equals 18. We need to calculate x. This will be:
75% × x = 18
75/100 × x = 18
0.75 × x = 18
0.75x = 18
x = 18/0.75
x = 24
The quiz has 24 questions.
Write the difference of the given functions (f - g)(x):
f(x) = x² + 2x - 6 and g(x) = x + 5.
Answer:
(f - g)(x) = x² + x - 11
General Formulas and Concepts:
Pre-Algebra
PropertiesAlgebra I
Combining like termsStep-by-step explanation:
Step 1: Define
f(x) = x² + 2x - 6
g(x) = x + 5
(f - g)(x) is f(x) - g(x)
Step 2: Find
Substitute: (f - g)(x) = x² + 2x - 6 - (x + 5)Distribute -1: (f - g)(x) = x² + 2x - 6 - x - 5Combine like terms: (f - g)(x) = x² + x - 11A roller coaster travels at a constant rate. If the roller coaster travels a total of 2,070 meters in 30 seconds, how many meters does the roller coaster travel in 1 second?
Answer:
I am pretty sure it is 69 meters per 1 second
Step-by-step explanation:
Because you divide 2070 with 30 and you get 69.
Answer:
69
Step-by-step explanation:
To do this question, you have to do 2,070 divided by 30 so your answer would be 69
Is y = -3x^2+10 a function?
Why or why not?
Answer:
yes because it passes the verticle line test.
Evaluate the expression for x = 1.7. Enter your answer in the box.
x2 + 3x
Answer:
7.99
General Formulas and Concepts:
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition SubtractionStep-by-step explanation:
Step 1: Define
x² + 3x
x = 1.7
Step 2: Solve
Substitute: 1.7² + 3(1.7)Exponents: 2.89 + 3(1.7)Multiply: 2.89 + 5.1Add: 7.99ron wants to buy a video game with a selling price of $60, on sale for 50% off. The sales tax in 4.5% state is . How much will he have to pay in all? If has $34, can he afford to purchase the game?
Answer:
Yes, he can.
Step-by-step explanation:
To find the sale, you need to times the sale percentage by the original price so
60 x 0.50 = 30
Then you subtract the original price by the sale price so
60 - 30 = 30
So the with the sale, the price is $30.
Now the tax
Do the same
30 x 0.045 = 1.35
Now instead of subtracting you add so
30 + 1.35 = $31.35
Yes, he can afford it.
(19 -16), (-7 -15) find the slope
(3x-4)(x+7)-1/4x^2 as a trinomial in standard form. If you can pls provided step by step explanation
The trinomial in standard form is 11/4x² + 17x - 28
How to rewrite the expression?The expression is given as:
(3x-4)(x+7)-1/4x^2
Rewrite properly as:
(3x - 4)(x + 7) - 1/4x²
Expand the expression
3x² - 4x + 21x - 28 - 1/4x²
Collect like terms
- 1/4x² + 3x² - 4x + 21x - 28
Evaluate the like terms
11/4x² + 17x - 28
Hence, the trinomial in standard form is 11/4x² + 17x - 28
Read more about trinomial at:
https://brainly.com/question/1538726
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Fill in the blanks below in order to justify whether or not the mapping shown represents a function.
Set A:
-2
2
3
-4
Set B:
1
6
-1
**** -2 goes with 6
2 goes with -1
3 goes with 1
-4 goes with1
Answer:
i not sure
Step-by-step explanation:
go shawty its ur birthday
Rod is paid $85 to install a screen door and $115 to install a wooden door. In one week he installed 18 doors and was paid a total of $1860. How many screen doors did Rod install?
Answer:Rod installed 7 screen doors
Step-by-step explanation:
Step 1
Let the number of screen door = x
And the number of wooden doors = y
since he installed 18 doors , we have that
screen door + wooden doors = 18
x + y = 18------ equation 1
Also the cost to install a screen door -= $85
and to install a wooden door = $115
And he was therefore paid a total of $1850
Therefore
85x + 115 y = $1860------- equation 2
Step 2----- Solving
x + y = 18------ equation 1
85x + 115 y = $1860------- equation 2
Multiplying equation 1 BY 85
85x + 85y= 1530------- equation 3
85x + 115 y = $1860------- equation 4
subtracting from equation 1 from (2)
115y- 85y= 1860-1530
30y=330
y = 330/30 = 11
To find x
x+ y=18
x= 18-y
x= 18-11= 7
Rod installed 7 screen doors and 11 wooden doors.
Before running in a 100-m race, Gaalen's heart rate was
70 beats/min. Which do you think is more likely after the race:
60 beats/min or 120 beats/min? Explain.
Answer:
120 bpm
Step-by-step explanation:
after strenuous exercise your heart rate wouldn't decrease as your body needs more oxygenated blood causing your heart to pump harder and faster
Answer:
120 bpm just like the guy above
Step-by-step explanation:
I had the same question
What is the x-intercept of the equation 7x + 3y = 21?
(0,3)
(0,7)
(3,0)
(7,0)
Explain how you can use a model to find 6 x 17
Answer:you can draw 6 boxes and boxes and fill it out like this:
Step-by-step explanation:
not really a great idea
Jesus is the son, the Christ, and the living God!!!
may he be in you're heart
Answer:
quick grab holy water and a little cross
Step-by-step explanation:
what do you think about stereotypes?
Answer:
there mean
Step-by-step explanation:
Answer:
Depends on the kind of stereotype, but if you're talking about the concept of stereotypes in general...
Step-by-step explanation:
I don't like stereotypes. Not the people themselves though, if that makes sense. Sorry, i'm not that good at explaining this kind of stuff.
PLEASE WILL GIVE BRAINLIEST!!
Step-by-step explanation:
Hey there!
Here;
A triangle is given with different measurements.
To find: value of p.
5 p = 2p+21° + 45° {The external angle is equal to the sum of opposite adjacent interior angles}
or, 5p - 2p = 21°+45°
3p = 66°
p = 66°/3
Therefore, the value of "p" is 22°.
Hope it helps....
 Write an equation in slope intercept form of the line shown. (4,1) (8,4)
Answer:
Y = 3/4x - 2
Step-by-step explanation:
Slope (rise/run) is 3/4 and the y-intercept is -2.
Hope this helps. Pls give brainliest.
An equation in slope intercept form of the line shown (4,1) and (8,4) is y=3/4 x-2.
The given coordinate points are (4, 1) and (8, 4).
What is the slope intercept form?The slope intercept form of a straight line is one of the most common forms used to represent the equation of a line. The slope intercept formula can be used to find the equation of a line when given the slope of the straight line and the y-intercept.
The standard form of the slope intercept form is y=mx+c.
Here, slope = (y2-y1)/(x2-x1)
= (4-1)/(8-4)
= 3/4
Put m=3/4 and (x,y)=(4,1) in y=mx+c
1=3/4 (4)+c
⇒c=-2
Now, substitute m=3/4 and c=-2 in y=mx+c and simplify
That is y=3/4 x-2
Therefore, an equation in slope intercept form of the line shown (4,1) and (8,4) is y=3/4 x-2.
To learn more about the slope intercept form visit:
brainly.com/question/9682526.
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Please help me quickly
Answer:
The answer is -4
Step-by-step explanation:
Answer:
-4
Step-by-step explanation:
PEMDAS
-3*2=-6
-6-6=-12
-12+8= -4
I hope you learned something from this
Pedro reparto 85 caramelos entre sus tres hijos el mayor le da el doble de caramelos y media no le da 13 caramelos más que al menos cuántos caramelos tiene cada uno
Express 8 hours as a percentage of 2 days. please solve step by step
Answer:
16.7%
Step-by-step explanation:
2 days=48 hours
percentage
=8/48×100%
=16.66...%
=16.7% (3s.f.)
The number of sticks of gum varies directly as the number of packages. There are 36 sticks of gum in 2 packages. Suppose you have 5 packages of gum. Write and solve a direct variation equation to determine how many sticks you have
Answer:
36 x 2 = 72
36 divide by 2 = 18
72+18=90
90 is the answer
Step-by-step explanation:
Complete the proof for the following Algebraic Equation:
3x + 6 = 2(x-1)
Select the answer for x below and show the proof on your page for uploading.
O x - 4
Ox= 1
O x=8
O x--7
x= -8
Step-by-step explanation:
3x + 6 = 2(x-1)
3x + 6 = 2x - 2
3x - 2x = -2 -6
x = -8
A pizza contains 780 calories and serves two people. How many calories are in a serving?
Answer:
390 calories
Step-by-step explanation:
1a. A club has 11 members. How many different 3-member committees could the club form?
a) 165
OR
b) 990
1b. in how many ways a club president can a club president, treasurer and secretary be chosen?
a) 165
OR
b) 990
Answer:
1a is 165
1b is 990
Step-by-step explanation:
So the first one is basically asking the possibility of each member being chosen for one of each role.
While the second one is asking the possibility of the person being in one specific role and making that be considered a possibility.
In other words, it's basically easier to get into one of the three roles rather than being in one specific role.
A store orders 22 boxes of light bulbs. Each box has 148 bulbs.
Which is the best estimate of the total number of bulbs the store orders?
Answer:
3,256bulbs
Step-by-step explanation:
An artist will use isometric transformations of square LMNO to create a symmetrical design with contrasting colors.
Which statement is true?
If LMNO is reflected over the y-axis, the small center square in the image will have a lesser area.
It LMNO is reflected over the x-axis, the small center square in the image will have the same area.
If LMNO is rotated 180° counterclockwise about point O, the small center square in the image will have a lesser area.
If LMNO is rotated 180° counterclockwise about point O, the small center square in the image will have a greater area.
Answer:
The Answer is B: It LMNO is reflected over the x-axis, the small center square in the image will have the same area.
Step-by-step explanation:
The other answers state that the canter square will change size when reflection doesn't do that. Reflection keeps the size and shape of the object. It only changes the positioning.
I hope this helps. Brainliest would be nice to.
Answer:
The Answer is B: It LMNO is reflected over the x-axis, the small center square in the image will have the same area.
Step-by-step explanation:
Which angle must have the same measure as angle x
Answer:
Two angles that have the same measure are called congruent angles. Here are two angles that both measure 30°. We say that angle x is congruent to angle y.
Step-by-step explanation:
thank you guys so much on the help! i got a 100%
Answer:
THAT'S AMAZING!!!
Step-by-step explanation:
good job!!
Answer:
Epic brotha
Step-by-step explanation:
The sum of two consecutive numbers is 175. Find the numbers. Write your answer as two numbers separated by a comma
Can someone help me ASAP!?please
Find the equation for a polynomial f(x) that satisfies the following:
•Degree 3
•Zero at 2=4
•Zero at 2 = 1
•Zero at x =2
•y-intercept of (0,4)
Answer:
f(x) = 1/2(4 - x)(x - 1)(x - 2)Step-by-step explanation:
Considering zero's and a coefficient, the function is:
f(x) = a(x - 4)(x - 1)(x - 2)Considering y-intercept:
f(0) = a(0 - 4)(0 - 1)(0 - 2)4 = a(-4)(-1)(-2)4 = -8aa = -1/2So the function is:
f(x) = -1/2(x - 4)(x - 1)(x - 2) = 1/2(4 - x)(x - 1)(x - 2)
The graph showing zero's is attached
