Answer:
All but the second one
Step-by-step explanation:
Find the inverse of each function:
b(x)=x^2+3
y=x^2+3
x=y^2+3
x-3=y^2
sqrt(x-3)=y
This inverse function is a function
d(x)=-9
y=-9
This doesn't have an inverse function
m(x)=-7x
y=-7x
x=-7y
-1/7x=y
This inverse function is a function
p(x)=|x|
y=|x|
x=|y|
x=y
This inverse function is a function
Therefore, all but the second function have inverses that are functions
Answer:
All but the second one have inverse functions
Step-by-step explanation:
Brainliest pls pls pls pls
A survey of 100 randomly selected dentists in the state of Ohio results in 78% who would recommend the use of a certain toothpaste. The population proportion is known to be p=0.72. For samples of size 100, which of the following best interprets the mean of the sampling distribution of sample proportion of dentists in the state of Ohio who would recommend the use of a certain toothpaste?
Answer:
I think its A
Step-by-step explanation:
Answer:
The mean of all sample proportions from all random samples of 100 dentists in the state of Ohio is equal to 0.72.
Step-by-step explanation:
help me with this please
Answer:
30-40
Step-by-step explanation:
because on the graph thats where they cross.
HELP ME PLEASEEEE ITS FOR geometry ITS WORTH 51 POINTS
Answer:
answer is b
Step-by-step explanation:
please help brainliest for correct answer
Answer: i think its a or d
Step-by-step explanation:hope
i helped
need help with the last 2 numbers
Answer:
the solution is t ≤1 (1)
VERTICIES AND COORDINATES
A(2,2), B(2, 6), C(5, 2)
I'VE BEEN WORKING IT FOR 6 HOURS STRAIGHT HELP ME.
What point is the intersection of the graphs of the lines 2 x - y = 3
and x + y = 3?
Answer:
(2, 1 )
Step-by-step explanation:
Given the 2 equations
2x - y = 3 → (1)
x + y = 3 → (2)
Rearrange (2) expressing y in terms of x by subtracting x from both sides
y = 3 - x → (3)
Substitute y = 3 - x into (1)
2x - (3 - x) = 3
2x - 3 + x = 3
3x - 3 = 3 ( add 3 to both sides )
3x = 6 ( divide both sides by 3 )
x = 2
substitute x = 2 into (3) for corresponding value of y
y = 3 - 2 = 1
Solution is (2, 1 )
In AABC AB = 3x - 2, BC=x+4, and AC = 7. Also AB = BC Which term does NOT describe AABC?
Equilateral
Acute
Isosceles
Obtuse
Answer:
acute maybe
Step-by-step explanation:
The given ΔABC is an equilateral triangle because all the sides are equal. The term which does not describe the ΔABC is obtuse option D is correct.
What is the triangle?Triangle is a shape made of three sides in a two-dimensional plane. the sum of the three angles is 180 degrees.
Given that:-
In AABC AB = 3x - 2, BC=x+4, and AC = 7. Also AB = BC
We know that AB = BC
3x - 2 = x + 4
3x = x + 4 + 2
3x = x + 6
2x = 6
x = 3
AB = 3x - 2 = 3(3) - 2 = 7
BC = x + 4 = 3 + 4 = 7
All three sides are equal so the triangle is an equilateral triangle. Hence given ΔABC is an equilateral triangle because all the sides are equal. The term which does not describe the ΔABC is obtuse option D is correct.
To know more about triangles follow
https://brainly.com/question/17335144
#SPJ2
how do you graph y=47x
Answer:
Start at the origin, then graph the point (1, 47) and connect the line.
Step-by-step explanation:
Slope: 47
y-intercept: 0
4x2+24=0 simplify solutions
Answer:
4x^2 + 24 = 0
4x^2 = - 24
unsqrt
4x = ±2√6
x = (±2√6)/4
What us the answer?
Answer:
The graph so C
Step-by-step explanation:
Cause u can’t get two or more x values for different for one y value( if u plug in 3 and u get 5, u can’t plug in 3 again and get 10)
A triangle has sides with lengths of 7 yards, 12 yards, and 13 yards. Is it a right triangle?
Answer:
yh
Step-by-step explanation:
Answer:
No
Step-by-step explanation:
We use the Pythagorean theorem.
a^2 + b^2 = c^2
7^2 + 12^2 = 49 + 144 = 193
13^2 = 169
Since 193 is not equal to 169, the triangle is not a right triangle.
What is (-3x2 - 6x - 8) - (4x2 + 5) simplified?
Step-by-step explanation:
i got 9x-9
hope this helps broo
please help!! its music!!
Answer:
Lowers the pitch by 1/2 step
Step-by-step explanation:
A truck is 180 inches long. A car is 30% shorter than the truck. How long is the car?
3x-5y=22: y=-5x+32 solve for y
Help pleaseee:))))
If x equals -4, what does -x equal???
16 = n + 3
Enter your answer in the box.
HELP ME PLEASE
Kyle has 27 black marbles and 18 red marbles in
a box. What is the ratio of the number of black
marbles to the number of red marbles in the box?
A.
1 to 3 B. 2 to 3 C 3 to 2 D. 9 to 1
Answer: C, 3 to 2
Step-by-step explanation:
The highest common multiple of the 2 numbers is 9, 27 divided by 9 is 3, 18 divided by 9 is 2.
16 points, Brainllest, a heart, and stars! First place gets brainllest, five stars and a heart! Second place gets 4 stars and a heart! (You only get it if you get it right )!
Write the percent as a fraction in simplest form and as a decimal. 16.24%
The fraction is
The decimal is
Answer:
Umm ty!
Step-by-step explanation:
Answer:
Fraction is: 203/1250
Decimal is: 0.1624
Step-by-step explanation:
Thank you for the points! Please mark this as brainliest! :)
fill in the table using this function rule. y= -6x + 3
x y
-1 ?
0 ?
1 ?
5 ?
Given that f(x) = x2 - 2x - 15,
a. Find the coordinates of the y-intercept
b. Find the coordinates of the x-intercepts
c. Find the coordinates of the vertex
d. Use the above information to sketch a graph of f(x)
a) (0; -15)
you just let x be equal to 0.
b) ( -5; 0) and (3;0)
you just let y/ f(x) equal to 0.
c)
Two boats start their journey from the same point A and travel along directions AC and AD, as shown below
What is the đistance, CD, between the boats? (5 points)
461.9 ft
530.9 ft
646.4 ft
325.5 ft
Answer:
a
Step-by-step explanation:
Find BD
Remember soh-cah-toa?
opposite/adjacent
tan30=400/x
xtan30=400
x = 400/tan30
Find BC
Still toa. . . still toa
90 + 60 = 150
180-150 = 30
BAC = 30
tan30=x/400
400tan30=x
BD-BC=CD
If you followed my steps, your answer should come to you.
If you didn't and are a lazy pr*ck who relies on others to do their semester exam problems for them, the answer is A. Or 461.
WILL GIVE BRAINLIEST!
If Triangle ABC ≈ Triangle DBE, find the value of x.
Answer:
x = 49
Step-by-step explanation:
The sum of angles in a triangle add up to 180°.
∠CBA = ∠EBD (Vertically opposite angles are equal)
= 52°
Since in the triangle DBE, you already know two of the angles, you can find ∠BDE which is equal to ∠CAB (x + 9)°.
∠BDE = 180° - 70° - 52°
= 58°
∠BDE = ∠CAB
= ∠(x + 9)°
= 58°
x + 9 = 58
x = 58 - 9
x = 49
Which line is parallel to the line given y=- 4/3x+1
Answer:
Any other line with this slope (-4/3)
Step-by-step explanation:
A quick look at y= (-4/3)x + 1 tells us immediately the slope of the given line is (-4/3). Any other line with this slope (-4/3) is parallel to y= (-4/3)x + 1. Next time, please share the answer choices. Thank you.
A city planner is mapping out some new features for a triangular park. She sketches the park on grid paper. The coordinates of the vertices of the park are (1, 1), (1, 4), and (−3, 4). The city planner wants to put a flower bed at the centroid of the park. What are the coordinates of the flower bed? (__,__)
Answer:
The coordinates of the flower bed are ([tex]-\frac{1}{3}[/tex] , 3)
Step-by-step explanation:
To find the centroid of a triangle, use this rule centroid = ([tex]\frac{x1+x2+x3}{3},\frac{y1+y2+y3}{3}[/tex]), where (x1, y1), (x2, y2), (x3, y3) are the vertices of the triangle
∵ The vertices of the triangle are (1, 1), (1, 4), (-3, 4)
∴ x1 = 1 and y1 = 1
∴ x2 = 1 and y2 = 4
∴ x3 = -3 and y3 = 4
→ Substitute them in the rule above
∵ Centroid = ([tex]\frac{1+1+-3}{3},\frac{1+4+4}{3}[/tex])
∴ Centroid = ([tex]\frac{-1}{3},\frac{9}{3}[/tex])
∴ Centroid = ([tex]-\frac{1}{3}[/tex] , 3)
∴ The coordinates of the flower bed are ([tex]-\frac{1}{3}[/tex] , 3)
A local coffee house donates 2 pounds of
gourmet coffee beans to be sold at a local
fundraiser. The people running the fundraiser
decide to package and sell the coffee beans
in pound packages. How many pound
packages can they make
Answer:
They can make 2
Step-by-step explanation:
The coffee shop donated 2lbs, and if they package it in 1lb bags, 2/1=2
Dina can run 4 miles in 30 minutes. If she maintains this pace, how many miles can she run in 90 minutes?
Answer:
Dina can run 12 miles in 90 minutes
Step-by-step explanation:
Since its 4 miles every 30 minutes, you would multiply 4 by 3 (since 30 x 3 = 90)
Hope this helped!
6. Which of the following is the volume of a hemisphere with a radius of 8
inches?
A. 1,607,68 inches cubed
O B. 1,071.79 inches cubed
C. 2,143.57 inches cubed
D. 535,89 inches cubed
Answer:
Step-by-step explanation:d
Answer:
B
Step-by-step explanation: A hemisphere is half of a sphere. Knowing this all you have to do is find the volume as if the figure was a sphere, then divide it by 2.
volume of sphere equation: V=4 /3 πr^3
50 points.
Record the simplified expression
Answer:
-4x+5
Step-by-step explanation:
-(4x-2) change sign of each in parenthesis so they are now -4+2
now you have -4x+2+3 add like terms
now you have -4x+5
[tex]\sf \longmapsto−4x+2+3[/tex]
Combine like terms[tex]\sf \longmapsto−4x+2+3[/tex]
[tex]\sf \longmapsto(−4x)+(2+3)[/tex]
[tex]\sf \longmapsto−4x+5[/tex]