Step-by-step explanation:
an equation is a function, if it delivers for every possible input value x exactly one result value y.
b(x) = y = x² + 3
y - 3 = x²
x = sqrt(y -3)
our formally correct
y = sqrt(x - 3)
that is actually NOT a function, as a square root delivers for most x values 2 y values : a positive and a negative value.
d(x) = -9
that means for every possible value of x the result is -9.
reversing this means that the input value of -9 has infinitely many possible results
that is NOT a function.
m(x) = y = -7x
x = -y/7
or formally correct
y = -x/7
that is a normal function. every possible value of x leads to exactly one value of y.
p(x) = y = 1x¹ = x
y = x is its own inverse function.
and this is, of course, a function. every possible value of x leads to exactly one value of y.
Judy received 198 votes for class president. This was 55% of the total votes cast. How
many votes were cast?
Enter your answer in number form only. Do not attach a label.
Answer:
Step-by-step explanation:
Sbakjxd
please help me!!!!!!!
Answer:
a = 3 , b = 5
Step-by-step explanation:
Ms. Parker wants to buy 10 books. Six of them cost $12.50 each, and the rest cost $26.35
each. If she only has $150, how much more does Ms. Parker need to buy all 10 books?
Answer:
180.4
Step-by-step explanation:
6 times 12.50 is 75
and the rest is 4 and 4 times 26.35 is 105.4
Answer 105.4 + 75 = 180.4
which number produces a rational number when multiplied by 0.5?
Answer:
2.22
Step-by-step explanation:
If jada can walk 2 miles in 1.5 hours, how long will it take jada to walk 6 miles?
Given triangle TVU list the sides of the shortest to longest
Answer:
VU, VT, TU
Step-by-step explanation:
List the side lengths of triangle TUV from shortest to longest.
A. VU, VT, TU
B. VT, TU, VU
C. VT, VU, TU
D. VU, TU, VT"
Quadrant of -9, 17? I cannot find the answer to the question
Answer:
[tex](-9,\, 17)[/tex] is in the second quadrant of a cartesian plane.
Step-by-step explanation:
The horizontal and vertical axes divides the cartesian plane into four quadrants. The quadrants are numbered counterclockwise, starting from the top-right corner:
[tex]\begin{array}{c|c}\text{second quadrant} & \text{first quadrant} \\\cline{1-2} \text{third quadrant} & \text{fourth quadrant}\end{array}[/tex].
(The quadrants do not include the two axes. Points on either axes are not in any of the quadrant.)
A point in the form [tex](x_{0},\, y_{0})[/tex] is on the right half of the plane (to the right of the vertical axis) if [tex]x_{0} > 0[/tex]. This point is on the vertical axis through the middle of the plane if [tex]x_{0} = 0[/tex]. Otherwise, if [tex]x_{0} < 0[/tex], this point would be on the left half of the plane (to the left of the vertical axis.)
The [tex]x[/tex]-coordinate of [tex](-9,\, 17)[/tex] is [tex]x_{0} = -9[/tex].
Since the [tex]x[/tex]-coordinate of this point is below zero ([tex](-9) < 0[/tex]), this point would be on the left-hand side of the origin to the left of the vertical axis.
Likewise, a point in the form [tex](x_{0},\, y_{0})[/tex] is above the horizontal axis if [tex]y_{0} > 0[/tex], on the horizontal axis if [tex]y_{0} = 0[/tex], and below the horizontal axis if [tex]y_{0} < 0[/tex].
The [tex]y[/tex]-coordinate of the given point [tex](-9,\, 17)[/tex] in this question is [tex]y_{0} = 17[/tex].
Since the [tex]y[/tex]-coordinate of this point is greater than zero ([tex]17 > 0[/tex]), this point would be above the horizontal axis.
Thus, the point [tex](-9,\, 17)[/tex] would be in the top-left quarter of the plane. The top-left quarter of the plane corresponds to the second quadrant, since this quadrant is the second quadrant after the first quadrant in the top-right corner. Hence, [tex](-9,\, 17)\![/tex] would be in the second quadrant of the plane.
please helpppppppppppppppppppp
Answer:
I got c
Step-by-step explanation:
18 minus plus 5 plus 7 is -30 so it dont represent zero
Answer:
C
Step-by-step explanation:
simplify the expression -2(x+3)
Answer:
-2x - 6
Step-by-step explanation:
I used a calculator :)
The answer is number 3
-2x-6
Hope this helps
Place the following numbers in order from least to greatest -4.5, -3 5/6, square root of 16, -8/3, -2 pie
-2pi, -4.5, -3 5/6 , -8/3 , square root of 16
negative numbers are weird and go down greast to least and the square root of 16 is simply 4
I neeed help I will mark Brainliest
Answer:
D. y = 9/4x
Step-by-step explanation:
First, find the gradient or slope, m
m = change in y ÷ change in x
m = (0 - -9) ÷ (0 - -4)
m = 9 ÷ 4 = 9/4
There is no y intercept, since the line goes through the origin (0,0)
y = 9/4x
Answer:
D.) y=9/4x
Step-by-step explanation:
The graph that I did has the line going through (0,0) and (-4,-9), like the question states.
Use the grouping method to factor this polynomial completely.
3x3 + 12x2 + 2x + 8
A. (3x2 + 4)(x+4)
B. (3x2 + 4)(x+2)
C. (3x2 + 2)(x + 2)
O D. (3x2 + 2)(x+4)
Answer:
[tex]D)\:(3x^{2} +2)(x+4)[/tex]
Step-by-step explanation:
[tex]3x^{3} + 12x^{2} + 2x + 8[/tex]
Group, [tex]3x^3+12x^2+2x+8[/tex] [tex]=(3x^{3} +12x^{2} )+(2x+8)[/tex]factor out [tex]3x^{2}[/tex]in the first and 2 in the second group.
[tex]3x^{2} (x+4)+2(x+4)[/tex]
Factor out common term [tex]x+4[/tex] by using distributive property.
polynomial [tex]3x^{2} +2[/tex] is not factored since it does not have any rational roots.
[tex](3x^{2} +2)(x+4)[/tex]
_____________________________
Answer:d
Step-by-step explanation:
00.8 is 10 times greater as
What is 99x99 - 8x8 + 25+
Answer:
9762
Step-by-step explanation:
Find the perimeter and area of the figure with the given coordinates:
A(-2,-1), B(-2,-4), C(3,-4), D(3,-1)
The sum of twice a number and seven less than four times a number is fifteen
please help!! will mark brainlist!
Answer:
i think its the middle one
Step-by-step explanation:
the scale drawing of a rectangular room measures 10 cm long by 6 cm wide. the actual width of the room is 15 feet. what is the actual perimeter of the room, in feet?
Answer:
80 feet
Step-by-step explanation:
6 cm = 15 feet
1 cm = 5/2 feet
32 cm = 90 feet
The actual perimeter of the room is 90 feet.
What is a scale factor?A scale factor is defined as the ratio between the scale of a given original object and a new object,
We have,
The scale drawing of a rectangular room measures 10 cm long by 6 cm wide.
The actual width of the room is 15 feet.
This means,
6cm = 15 feet
1 cm = 15/6 feet
1 cm = 5/2 feet
Now,
The perimeter of the rectangular room.
= 2(10 + 6)
= 2 x 16
= 32 cm
1 cm = 5/2 feet
So,
32 cm = 32 x 5/2 feet
32 cm = 16 x 5 feet
32 cm = 90 feet
Thus,
The actual perimeter of the room is 90 feet.
Learn more about scale factors here:
https://brainly.com/question/20759556
#SPJ2
Please help thank you!!!
If 8 pizzas cost $72,how much will 15 pizzas cost
Answer: $135
Explanation: To find how much 15 pizzas will cost, first we have to find out how much just one pizza will cost. To do this, you have to divide both the number of pizzas (8) and also the price for those 8 pizzas ($72) by the number of pizzas (8 again). When you do this you get the price of one pizza. Then you multiply the price of one pizza by the amount of pizzas you actually need to find the value for (15). This is a lot to explain but don't lose hope! Let me show you step by step and it'll make more sense.
Step 1) Divide both the amount of pizzas and the cost of that many pizzas
8 ÷ 8 = 1
72 ÷ 8 = 9
This means that one pizza costs 9 dollars.
Step 2) Multiply the cost of one pizza by 15 (the amt of pizzas you need to find the cost for)
15 × 9 = 135
135 is the cost for 15 pizzas. I hope this helps you!
When you divide a whole number by a decimal less than 1,
the quotient is greater than the whole number. Why? tar
9514 1404 393
Explanation:
We assume all the numbers considered here are positive.
Dividing by a number is the same as multiplying by its reciprocal. A fraction less than 1 can be represented as the ratio m/n, where m < n. The reciprocal of this fraction is n/m, where n > m. That is, the reciprocal of a fraction less than 1 is a number greater than 1.
When you divide by a number less than 1, you effectively multiply by a number greater than 1. That is why the quotient is greater than the original dividend.
in the similarity transformation of abc to def, abc was dilated by a scale factor of [?], reflected across the [ ], and moved through the translation [ ].
The complete similarity transformation is: triangle abc was dilated by a scale factor of [2], reflected across the [x-axis], and moved through the translation [0].
How to complete the similarity statement?From the figure, we have:
AB = 2 units
DE = 4 units
So, the scale factor (k) is:
k = DE/AB
k = 4/2
k = 2
So, the scale factor is 2
Also, both shapes are on either sides of the x-axis, and they are equidistant from the x-axis.
This means that the triangle is reflected across the x-axis with no translation.
Hence, the complete similarity transformation is:
abc was dilated by a scale factor of [2], reflected across the [x-axis], and moved through the translation [0].
Read more about transformation at:
https://brainly.com/question/4289712
Determine the intercepts of the line.
Do not round your answers.
y=-2x-21y=−2x−21
Answer:
• For y-intercept [ x = 0 ]
[tex]{ \rm{y = - 2x - 21}} \\ \\ { \rm{y = ( - 2 \times 0) - 21}} \\ \\ { \rm{y = - 21}} \\ \\ { \boxed{ \rm{ \: y - intercept : \: (0, \: - 21) \: }}}[/tex]
• For x-intercept [ y = 0 ]
[tex]{ \rm{y = - 2x - 21}} \\ \\ { \rm{0 = - 2x - 21}} \\ \\ { \rm{2x = - 21}} \\ \\ { \rm{x = - 10.5}} \\ \\ { \boxed{ \rm{x -intercept : \: ( - 10.5, \: 0) \: }}}[/tex]
Answer:
I hope you got it right!! :)
Step-by-step explanation:
what is (x-1)-(3x+2)
Answer:
-2x - 3
Step-by-step explanation:
1. distribute
( x - 1 ) - (3x + 2)
(x - 1) - 3x - 2
2. Eliminate redundant parentheses
(x - 1) - 3x - 2
x - 1 - 3x - 2
3. Subtract the numbers
x−1 − 3x − 2
x - 3 - 3x
4.
x − 3 − 3x
-2x - 3
which of the numbers are closest to 7
[tex] \sqrt{47} [/tex]
[tex] \sqrt{50} [/tex]
[tex] \sqrt{51} [/tex]
[tex] \sqrt{46} [/tex]
Answer:
7 x 7 = 49
49 is closest to 50
B is your answer
Step-by-step explanation:
Help me plss ASAP plzzz
Answer:
begin with 12 and pat has 8 red flowers
Step-by-step explanation:
easy mathz
Answer:
Begin with 12 and there are 8 flowers are red
Step-by-step explanation:
12-4=8
Zayn puts garland around a square window. He uses 888 meters of garland.
What is the height of the window?
Answer:
222 meters
Step-by-step explanation:
Zayn puts a total of 888 meters of garland around a square window.
Because a square has all equal sides, divide the amount of garland he used by 4 to find how much is used per side:
888 ÷ 4 = 222
So, the height of the window is 222 meters.
How do u write 6000 in standard form
Answer:
6× 10^3 is the standard form of 6000
Answer:
I write 6000 , Six thousand in standard form.
what is an equivalent ratio to 9:1
Answer:
Equivalent ratio of 9:1 is 18:2.
Mark me as the brainlist
Answer:
18:2 is equivalent
pretty sure
Solve using a proportion.
Answer:
i cant see it
Step-by-step explanation: