Answer:
C
Step-by-step explanation:
Try to plug in the first pair of numbers to eliminate some equations, all but C fail to satisfy the equation. So C is the answer.
Answer:
CStep-by-step explanation:
Notice that the table doesn't have an exponential behaviour. Because an exponential function has the point (0,1), because all powers with a null exponent are equal to 1.
Also, notice that the table doesn't show a linear relation, because y-variable has all values positive.
Therefore, the only relation that follows the values of the table is
[tex]y=2.5x^{2}[/tex]
Let's evalue each x-value
[tex]y=2.5(-2)^{2} =2.5(4)=10\\y=2.5(-1)^{2}=2.5(1)=2.5\\ y=2.5(0)^{2}=2.5(0)=0\\y=2.5(1)^{2}=2.5\\y=2.5(2)^{2}=10[/tex]
Therefore, the right answer is C. The given values show a quadratic relation.
A faster way to deduct the quadratic pattern is observing that y-values are symmetric no matter if x-values are positive or negative, that meanst he function is pair, or quadratic.
Myrtle took out a 3-year loan for 2050$ at a computer retailer to be paid back with monthly payments at 12% apr compounded monthly. If the loan offers no payments for the first 5 months about how much in total will myrtle pay in interest for the loan?
Answer:
466.27$ APEX
Step-by-step explanation:
Answer:
We have ; p = 2050
r = [tex]12/12/100=0.01[/tex]
n = [tex]3\times12=36[/tex]
But we will take [tex]36-5=31[/tex]
EMI formula is :
[tex]\frac{p\times r\times(1+r)^{n}}{(1+r)^{n}-1}[/tex]
Substituting values in the formula we get;
[tex]\frac{2050\times0.01\times(1+0.01)^{31}}{(1+0.01)^{31}-1}[/tex]
= [tex]\frac{2050\times0.01\times(1.01)^{31}}{(1.01)^{31}-1}[/tex]
= $77.24
Now for further working you can see the sheet attached.
Total interest paid for the loan = $446.76
What is the volume of a sphere that has a radius of 9?
Answer:
V = 3053.63
Step-by-step explanation:
The volume of a sphere that has a radius of 9 is 3053.63.
V=4
3πr3=4
3·π·93≈3053.62806
Answer is provided in the image attached.
Use the Quadratic Formula to solve the equation x2 - 4x = -7
The given quadratic equation x² - 4x = -7 is rearranged into standard form and then solved using the quadratic formula -b ± √(b² - 4ac) / (2a). The roots of the equation are realized from solving this formula.
Explanation:The subject of this problem is a quadratic equation in the form of ax²+bx+c = 0. The given equation is x² - 4x = -7, which can be rearranged into standard form as x² - 4x + 7 = 0. Thus, in this case, a=1, b=-4, and c=7.
The solutions or roots for this quadratic equation can be calculated using the quadratic formula, which is -b ± √(b² - 4ac) / (2a). Substituting the values of a, b, and c into the formula will give the roots of the given equation.
Doing that, we get: x = [4 ± √((-4)² - 4*1*7)] / (2*1)
The values that solve the equation are the roots of the quadratic equation.
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To solve the equation x^2 - 4x = -7 using the Quadratic Formula, we follow the steps of plugging the values of a, b, and c into the formula, evaluating the square root and simplifying to find the solutions.
Explanation:To solve the equation x2 - 4x = -7 using the Quadratic Formula, we first need to make sure the equation is in standard form, which is ax2 + bx + c = 0. In this case, a = 1, b = -4, and c = 7. Plugging these values into the Quadratic Formula, we get:
x = (-(-4) ± √((-4)2 - 4(1)(-7))) / (2(1))
x = (4 ± √(16 + 28))/2
x = (4 ± √44)/2
x = (4 ± 2√11)/2
x = 2 ± √11
So the solutions to the equation x2 - 4x = -7 are x = 2 + √11 and x = 2 - √11.
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A parallelogram has coordinates A(1,1), B(5,4), C(7,1), and D(3,-2) what are the coordinates of parallelogram A’BCD after 180 degree rotation about the origin and a translation 5 units to the right and 1 unit down ?
Answer:
The coordinates are (4 , -2) , (0 , -5) , (-2 , -2) , (2 , 1)
Step-by-step explanation:
* Lets revise some transformation
- If point (x , y) rotated about the origin by angle 180°
∴ Its image is (-x , -y)
- If the point (x , y) translated horizontally to the right by h units
∴ Its image is (x + h , y)
- If the point (x , y) translated horizontally to the left by h units
∴ Its image is (x - h , y)
- If the point (x , y) translated vertically up by k units
∴ Its image is (x , y + k)
- If the point (x , y) translated vertically down by k units
∴ Its image is (x , y - k)
* Now lets solve the problem
∵ ABCD is a parallelogram
∵ Its vertices are A (1 , 1) , B (5 , 4) , C (7 , 1) , D (3 , -2)
∵ The parallelogram rotates about the origin by 180°
∵ The image of the point (x , y) after rotation 180° about the origin
is (-x , -y)
∴ The images of the vertices of the parallelograms are
(-1 , -1) , (-5 , -4) , (-7 , -1) , (-3 , 2)
∵ The parallelogram translate after the rotation 5 units to the right
and 1 unit down
∴ We will add each x-coordinates by 5 and subtract each
y-coordinates by 1
∴ A' = (-1 + 5 , -1 - 1) = (4 , -2)
∴ B' = (-5 + 5 , -4 - 1) = (0 , -5)
∴ C' = (-7 + 5 , -1 - 1) = (-2 , -2)
∴ D' = (-3 + 5 , 2 - 1) = (2 , 1)
* The coordinates of the parallelograms A'B'C'D' are:
(4 , -2) , (0 , -5) , (-2 , -2) , (2 , 1)
a) 3(2x + 3) = -3 (-30 +4)
Answer:
3(2x+3)=-3(-30+4)
6x+9=90+12
6x+9=102
6x=93
x=15.5
-please mark as brainliest-
Answer:
11½ = x
Step-by-step explanation:
6x + 9 = 78
- 9 - 9
-------------
6x = 69 [Divide by 6]
x = 11½ [3⁄6 = ½]
I hope this helps you out, and as always, I am joyous to assist anyone at any time.
Which of the following is a geometric sequence? Help pleaseee!
Answer: B
Step-by-step explanation:
Division of components are consistent - the same
Answer:
B. -3, 3, -3, 3...
Step-by-step explanation:
There's two types of sequences, arithmetic and geometric.
Arithmetic equations are sequences that increase or decrease by adding or subtracting the previous number.
For example, take a look at the following sequence:
2, 4, 6, 8, 10, 12, 14, 16, 18, 20...
Here, the numbers are increasing by +2. [adding]
So, this the sequence is arithmetic, since its adding.
Geometric sequences are sequences that increase or decrease by multiplying or dividing the previous number.
For example, take a look at the following sequence:
2, 4, 16, 32, 64, 128, 256, 512...
Here, the numbers are icnreasing by x2. [multiplying]
So, the sequence is geometric since its multiplying.
Based on this information, the correct answer is "B. -3, 3, -3, 3..." since its being multiplyed by -1.
A high school track is shaped as a rectangle with a half circle on either side . Jake plans on running four laps . How many meters will jake run ?
Answer:
[tex]1,207.6\ m[/tex]
Step-by-step explanation:
step 1
Find the perimeter of one lap
we know that
The perimeter of one lap is equal to the circumference of a complete circle (two half circles is equal to one circle) plus two times the length of 96 meters
so
[tex]P=\pi D+2(96)[/tex]
we have
[tex]D=35\ m[/tex]
[tex]\pi =3.14[/tex]
substitute
[tex]P=(3.14)(35)+2(96)[/tex]
[tex]P=301.9\ m[/tex]
step 2
Find the total meters of four laps
Multiply the perimeter of one lap by four
[tex]P=301.9(4)=1,207.6\ m[/tex]
Answer:
1207.6
Step-by-step explanation:
step 1
i got it right on the test
step 2
you get it right on the test
What expression can be used to find 75% of 60%?
Answer:
The expression used to find of 75 and 60 is 45.
Step-by-step explanation:
To find expression of 75 and 60, multiply decimals from left to right.
0.75*0.60=0.45 =45%
.75*.60=.45=45
45=45
True
45, which is our answer.
Isabel is on a ride in an amusement park that Slidez the right or to the right and then it will rotate counterclockwise about its own center 60° every two seconds how many seconds pass before Isabel returns to her starting position
Final answer:
Isabel's ride rotates 60° every two seconds. It takes 6 intervals (360° divided by 60°) to make a full rotation. Multiplying 6 intervals by 2 seconds gives us 12 seconds for Isabel to return to the starting position.
Explanation:
To determine how many seconds will pass before Isabel returns to her starting position on the ride, we need to establish the total degrees of rotation that equate to a full circle, which is 360°. Since the ride rotates 60° every two seconds, we can calculate the number of two-second intervals required to complete a full 360° rotation.
Firstly, divide 360° by 60° to find the number of intervals:
360° / 60° = 6 intervals
Since each interval takes 2 seconds, multiply the number of intervals by 2 to find the total time:
6 intervals × 2 seconds/interval = 12 seconds.
Therefore, it will take Isabel 12 seconds to return to her starting position on the amusement park ride.
what is the value of x?
Answer:
x=35
Step-by-step explanation:
We have the two angles (6x -82) and (3x + 23) that are equal. To find 'x' we need to solve the system of equations:
6x -82 = 3x + 23
Solving for 'x':
3x = 105
x = 35
[tex]6x-82=3x+23\\3x=105\\x=35[/tex]
merical expression 6+2^3•3
For this case we must resolve the following expression:
[tex]6 + 2 ^ 3 * 3 =[/tex]
For the PEMDAS evaluation rule, the second thing that must be resolved are the exponents, then:
[tex]6 + 8 * 3 =[/tex]
Then the multiplication is solved:
[tex]6 + 24 =[/tex]
Finally the addition and subtraction:
30
Answer:
30
The equations 3x-4y=-2, 4x-y=4, 3x+4y=2, and 4x+y=-4 are shown on a graph.
Which is the approximate solution for the system of equations 3x+4y=2 and 4x+y=-4?
A. (–1.4, 1.5)
B. (1.4, 1.5)
C. (0.9, –0.2)
D. (–0.9, –0.2)
i cant download the graph picture but please help.
Answer:
A (-1,4,1.5)
Step-by-step explanation:
Solve by graphing, the lines intersect near this point.
Solve the system of equations y=x^2-2 y=-2x+1
Answer:
D
Step-by-step explanation:
Given the 2 equations
y = x² - 2 → (1)
y = - 2x + 1 → (2)
Substitute y = x² - 2 into (2)
x² - 2 = - 2x + 1 ( subtract - 2x + 1 from both sides )
x² + 2x - 3 = 0 ← in standard form
(x + 3)(x - 1) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 3 = 0 ⇒ x = - 3
x - 1 = 0 ⇒ x = 1
Substitute these values into (2) for corresponding values of y
x = - 3 : y = -2(- 3) + 1 = 6 + 1 = 7 ⇒ (- 3, 7 )
x = 1 : y = - 2(1) + 1 = - 2 + 1 = - 1 ⇒ (1, - 1 )
Answer:
D. (-3, 7) and (1, -1)Step-by-step explanation:
[tex]\left\{\begin{array}{ccc}y=x^2-2&(1)\\y=-2x+1&(2)\end{array}\right\\\\\text{substitute (1) to (2):}\\\\x^2-2=-2x+1\qquad\text{add 2x to both sides}\\x^2+2x-2=1\qquad\text{subtract 1 from both sides}\\x^2+2x-3=0\\x^2+3x-x-3=0\\x(x+3)-1(x+3)=0\\(x+3)(x-1)=0\iff x+3=0\ \vee\ x-1=0\\\\x+3=0\qquad\text{subtract 3 from both sides}\\x=-3\\\\x-1=0\qquad\text{add 1 to both sides}\\x=1\\\\\text{put the value of x to (1):}\\\\for\ x=-3\\y=(-3)^2-2=9-2=7\\\\for\ x=1\\y=1^2-2=1-2=-1[/tex]
Factor by grouping. 6p2 – 17p – 45
Answer:
(2p - 9)(3p + 5)
Step-by-step explanation:
We have the polynomial: 6p2 – 17p – 45
Rewrite the middle term as a sum of two terms:
6p2 + 27p - 10p - 45
Factor:
3p(2p - 9) + 5(2p - 9)
→ (2p - 9)(3p + 5)
For this case we must factor the following expression:
[tex]6p ^ 2-17p-45[/tex]
We must rewrite the term of the medium as two numbers whose product is [tex]6 * (- 45) = - 270[/tex]
And whose sum is -17
These numbers are: -27 and +10:
[tex]6p ^ 2 + (- 27 + 10) p-45\\6p ^ 2-27p + 10p-45[/tex]
We group:
[tex](6p ^ 2-27p) + 10p-45[/tex]
We factor the maximum common denominator of each group:
[tex]3p (2p-9) +5 (2p-9)[/tex]
We factor[tex](2p-9)[/tex] and finally we have:
[tex](2p-9) (3p + 5)[/tex]
Answer:
[tex](2p-9) (3p + 5)[/tex]
Please answer ASAP!
Answer:
C 1 hours 12 minutes
Step-by-step explanation:
We know distance is equal to rate times time
d= r*t
We know the distance is 30 miles and the rate is 25 miles per hour
30 = 25 *t
Divide each side by 25
30/25 = 25t/25
30/25 =t
6/5 =t
1 1/5 =t
Changing 1/5 hour to minutes. We know there is 60 minutes in 1 hours so 1/5 of an hour is 60*1/5
1/5 *60minutes = 12 minutes
1 hours 12 minutes
Consider the function represented by 9x+3y= 12 with x as the independent variable. How can this function be written using
function notation?
o AV=-=x+
o 0) = -3x+4
o Px) =-x+
o F) = - 3y+ 4
Answer:
f(x)=-3x+4
(can't see some of your choices)
Step-by-step explanation:
We want x to be independent means we want to write it so when we plug in numbers we can just choose what we want to plug in for x but y's value will depend on our choosing of x.
So we need to solve for y.
9x+3y=12
Subtract 9x on both sides
3y=-9x+12
Divide both sides by 3:
y=-3x+4
Replace y with f(x).
f(x)=-3x+4
1. Factor each of the following completely. Look carefully at the structure of each quadratic function and consider the best way to factor. Is there a GCF? Is it an example of a special case? SHOW YOUR WORK
Answer: 1) (x - 7)(x - 8)
2) 2x(2x-7)(x + 2)
3) (4x + 7)²
4) (9ab² - c³)(9ab² + c³)
Step-by-step explanation:
1) x² - 15x + 56 → use standard form for factoring
∧
-7 + -8 = -15
(x - 7) (x - 8)
************************************
2) 4x³ - 6x² - 28x → factor out the GCF (2x)
2x(2x² - 3x - 14) → factor using grouping
2x[2x² + 4x - 7x - 14]
2x[ 2x(x + 2) -7(x + 2)]
2x(2x - 7)(x + 2)
*************************************
3) 16x² + 56x + 49 → this is the sum of squares
√(16x²) = 4x √(49) = 7
(4x + 7)²
******************************************************
4) 81a²b⁴ - c⁶ → this is the difference of squares
√(81a²b⁴) = 9ab² √(c⁶) = c³
(9ab² - c³)(9ab² + c³)
Question 7 (5 points)
Find the first five terms of the sequence in which a1 =-10 and an = 4an - 1 + 7. if n
2.
Answer:
-10, -33, -125, -493, -1965
Step-by-step explanation:
a_1 = -10
a_n = 4a_(n - 1) + 7
The first five terms of the sequence are
a_1 = -10
a_2 = 4(-10) + 7 = -40 + 7 = -33
a_3 = 4(-33) + 7 = -132 + 7 = -125
a_4 = 4(-125) + 7 = -500 + 7 = -493
a_5 = 4(-473) + 7 = -1972 + 7 = -1965
What is the midpoint of a line segment with the endpoints (-6, -3) and (9,-7)?
Answer: (1.5, -5)
Step-by-step explanation: a p e x
Some trapezoids are rectangles.
O
A. True
O
B. False
It's false, trapezoids are not rectangles.
What is the equation of the graph below
Answer:
y=-(x-3)^2+2
Step-by-step explanation:
since the curve is convex up so the coefficient of x^2 is negative
and by substituting by the point 3 so y = 2
Answer:
B
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
here (h, k) = (3, 2), hence
y = a(x - 3)² + 2
If a > 0 then vertex is a minimum
If a < 0 then vertex os a maximum
From the graph the vertex is a maximum hence a < 0
let a = - 1, then
y = - (x - 3)² + 2 → B
Which of the following numbers are less than 9/4?
Choose all that apply:
A= 11/4
B= 15/8
C= 2.201
Answer:
OPTION B.
OPTION C.
Step-by-step explanation:
In order to know which numbers are less than [tex]\frac{9}{4}[/tex], you can convert this fraction into a decimal number. To do this, you need to divide the numerator 9 by the denominator 4. Then:
[tex]\frac{9}{4}=2.25[/tex]
Now you need convert the fractions provided in the Options A and B into decimal numbers by applying the same procedure. This are:
Option A→ [tex]\frac{11}{4}=2.75[/tex] (It is not less than 2.25)
Option B→ [tex]\frac{15}{8}=1.875[/tex] (It is less than 2.25)
The number shown in Option C is already expressed in decimal form:
Option C→ [tex]2.201[/tex] (It is less than 2.25)
Evaluate the function rule for the given value. y = 15 • 3^x for x = –3
Answer:
5/9
Step-by-step explanation:
y = 15 • 3^x
Let x = -3
y = 15 • 3^(-3)
The negative means the exponent goes to the denominator
y = 15 * 1/3^3
= 15 * 1/27
=15/27
Divide the top and bottom by 3
=5/9
The perimeter of a bedroom is 88 feet. The ratio of the width to the length is 5:6. What are the dimensions of the bedroom?
Answer:
20 feet wide, 24 feet long
Step-by-step explanation:
Let x - width, y - length.
The perimeter is given by the formula:
P = 2*(width + length) or using x, y
P = 2*(x + y) = 88
x + y = 44
And we know that the ratio between the sides is 5/6:
x/y = 5/6. x is on top because the length is bigger than the width
x = 5y/6
Plug this in the first expression:
y + 5y/6 = 44. Muliply by 6
6y + 5y = 264
11y = 264
y = 264/11 = 24.
So x = 5(24)/6 = 20
what is the area of the sector shown
Answer:
[tex] D.~ 34.2~cm^2 [/tex]
Step-by-step explanation:
An arc measure of 20 degrees corresponds to a central angle of 20 degrees.
Area of sector of circle
[tex] area = \dfrac{n}{360^\circ}\pi r^2 [/tex]
where n = central angle of circle, and r = radius
[tex] area = \dfrac{20^\circ}{360^\circ}\pi (14~cm)^2 [/tex]
[tex] area = \dfrac{1}{18}(3.14159)(196~cm^2) [/tex]
[tex] area = 34.2~cm^2 [/tex]
Write a function rule based on the table below.
x f(x)
1 5
2 10
3 15
f(x) = x + 4
f(x) = 5x + 2
f(x) = 5x
f(x) = 5
Answer:
[tex]\large\boxed{f(x)=5x}[/tex]
Step-by-step explanation:
[tex]\begin{array}{c|c}x&f(x)\\1&5\\2&10\\3&15\end{array}\\\\\\f(1)=5(1)=5\\f(2)=5(2)=10\\f(3)=5(3)=15\\\Downarrow\\f(x)=5x[/tex]
What is the sum of entries a32 and b32 in A and B? (matrices)
Answer:
The correct answer is option D. 13
Step-by-step explanation:
From the figure we can see two matrices A and B
To find the sum of a₃₂ and b₃₂
From the given attached figure we get
a₃₂ means that the third row second column element in the matrix A
b₃₂ means that the third row second column element in the matrix B
a₃₂ = 4 and b₃₂ = 9
a₃₂ + b₃₂ = 4 + 9
= 13
The correct answer is option D. 13
[tex]A={\begin{bmatrix}a_{11}&a_{12}&\cdots &a_{1n}\\a_{21}&a_{22}&\cdots &a_{2n}\\\vdots &\vdots &\ddots &\vdots \\a_{m1}&a_{m2}&\cdots &a_{mn}\end{bmatrix}}[/tex]
So
[tex]a_{32}=4\\b_{32}=9\\\\a_{32}+b_{32}=4+9=13[/tex]
plz help meh wit dis question but I need to show work.....
Answer:
5
Step-by-step explanation:
16+24
--------------
30-22
Complete the items on the top of the fraction bar
40
----------
30-22
Then the items under the fraction bar
40
------------
8
Then divide
5
Step-by-step explanation:
First of all, solve the numerator.
16+24=40
Secondly, solve the denominator:
30-22 = 8
So now the fraction appear like this :
[tex] \frac{40}{8} [/tex]
40/8 = 5
children play a form of hopscotch called jumby. the pattern for the game is as given below.
Find the area of the pattern in simplest form.
Answer:
7t^2 + 21t
Step-by-step explanation:
You have 7 tiles of each t by t+3.
One tile has an area of
t * (t+3) = t^2 + 3t
So in total the area is
7* (t^2 + 3t)
7t^2 + 21t
write a point slope equation for the line that has slope 3 and passes through the point (5,21). do not use parenthesis on the y side
Answer:
y - 21 = 3(x - 5)
Step-by-step explanation:
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
here m = 3 and (a, b) = (5, 21), hence
y - 21 = 3(x - 5) ← in point- slope form
The point slope form of an equation is y - y1 = m(x - x1). Substituting the given point (5,21) and slope 3 into the equation, we get y - 21 = 3(x - 5). To remove the parenthesis on the y side, we simplify the equation to be y = 3x + 6.
Explanation:The question asks for the writing of a point-slope equation of a line with a given slope of 3 that passes through a point (5,21). The point-slope form of an equation is generally denoted as:
y - y1 = m(x - x1)
Here, (x1, y1) = (5,21) and m (slope) = 3. Hence, substituting these values yields the equation:
y - 21 = 3(x - 5)
The asked equation without parenthesis on the y side would be:
y = 3x - 15 + 21
So, the final equation is:
y = 3x + 6
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