Answer: C (104)
Step by step explanation:
To find this answer, you would multiply all the answer choices by 25% and then add the answer to 78 and if the answer is that number, then its correct
104 times 25%=26
78+26=104
Someone help please ASAP!!!!
The answer to this question is Option C.
As stated in the problem, both programs being Math Master (75% to 87%) and Excel (73% to 81%) increased, therefore, meaning they are both effective as the average test scores increased. However, Math Master had a higher average test score increase compared to Excel, meaning it is even more effective.
Hope this helps :)
I need help please!
Answer:
Yes
Step-by-step explanation:
1/4+1/4+1/4=3/4 can also be written as
3*1/4
Help Please! I dont understand these questions!
Directions: Write the equation of the line in point-slope form, then convert that equation to slope-intercept form. Show your work!
1. Write the equation of the line that is parallel to y = 2x + 4 and passes through the point (-4, -1).
2. Write the equation of the line that is parallel to y = ⅓x - 3 and passes through the point (3, -1).
3. Write the equation of the line that is perpendicular to y = ¾x - 1 and passes through the point (3, -3).
4. Write the equation of the line that is perpendicular to y = -x - 5 and passes through the point (7, 3).
The point-slope form of the equation of line it's y - y₁ = m(x - x₁), where m is the slope and (x₁, y₁) is the point the line passing through.
The slope-intercept form of the equation of line it's y = mx + b, where m is the slope and b is the y-intercept of the line.
1. Write the equation of the line that is parallel to y = 2x + 4 and passes through the point (-4, -1).
y=m₁x+b₁ ║ y=m₂x+b₂ ⇔ m₁ = m₂
{Two lines are parallel if their slopes are equal}
y = 2x + 4 ⇒ m₁ = 2 ⇒ m₂ = 2
(-4, -1) ⇒ x₁ = -4, y₁ = -1
point-slope form:
y - (-1) = 2(x - (-4))
y + 1 = 2(x + 4)
y + 1 = 2x + 8 {subtact 1 from both sides}
y = 2x + 7 ← slope-intercept form2. Write the equation of the line that is parallel to y = ⅓x - 3 and passes through the point (3, -1).
y = ⅓x - 3 ⇒ m₁ = ⅓ ⇒ m₂ = ⅓
(3, -1) ⇒ x₁ = 3, y₁ = -1
point-slope form:
y - (-1) = ⅓(x - 3)
y + 1 = ⅓x - 1 {subtact 1 from both sides}
y = ⅓x - 2 ← slope-intercept form
3. Write the equation of the line that is perpendicular to y = ¾x - 1 and passes through the point (3, -3).
y=m₁x+b₁ ⊥ y=m₂x+b₂ ⇔ m₁×m₂ = -1
{Two lines are perpendicular if the product of theirs slopes is equal -1}
y = ¾x - 1 ⇒ m₁ = ¾
¾×m₂ = -1 ⇒ m₂ = -⁴/₃
(3, -3) ⇒ x₁ = 3, y₁ = -3
point-slope form:
y - (-3) = -⁴/₃(x - 3)
y + 3 = -⁴/₃x + 4 {subtact 3 from both sides}
y = -⁴/₃x + 1 ← slope-intercept form
4. Write the equation of the line that is perpendicular to y = -x - 5 and passes through the point (7, 3).
y = - x - 5 ⇒ m₁ = -1
-1×m₂ = -1 ⇒ m₂ = 1
(7, 3) ⇒ x₁ = 7, y₁ = 3
point-slope form:
y - 3 = -1(x - 7)
y - 3 = - x + 7 {add 3 to both sides}
y = - x + 10 ← slope-intercept formI cant figure it out, and if I get this wrong I fail the test
Step-by-step explanation:
x = 1.21212121.....
100x = 121.21212121...
Therefore 99x = 120 and x = 120/99 = 40/33.
Answer:
[tex] \frac{40}{33} [/tex]
Step-by-step explanation:
hope it helpsss:-)
Electricity Bill Charges
First 200 units 22p per unit
Remaining units 15p per unit
Mr Powers checks his electricity bill.
Here are his meter readings.
New reading:
Old reading
6538 units
6245 units
a)
Use subtraction to calculate the number of units used.
b)
Calculate the cost of the number of units used.
Answer:
a) 293 units
b) £57.95
Step-by-step explanation:
a)
New reading: 6538 units
Old reading : 6245 units
The amount use is the difference between the two readings.
6538 - 6245 = 293
Answer: 293 units
b)
293 is the same as 200 units plus another 93 units.
The first 200 units are charged at 22p per unit
Cost of the first 200 units: 200 units * 22p/unit = 4400p
Remaining units are charged at 15p per unit
Cost of the additional 93 units: 93 units * 15p/unit = 1395p
Total charge: 4400p + 1395p = 5795p = £57.95
Answer: £57.95
Find the length of side a .
how do I find the length of side a?
Step-by-step explanation:
might be correct
according to PythagorasAnswer:
A. 12
Step-by-step explanation:
AP3X
Trapezoid ABCD is shown on the graph. If the trapezoid is rotated 90 degrees
counterclockwise about the origin and the resulting image is translated 6
units left, what are the coordinates of C"?
Answer:
The coordinates of C" are (-7, 4)
Step-by-step explanation:
If the point (x, y) rotated about the origin by angle 90° counterclockwise, then its image is (-y, x)If the point (x, y) translated horizontally to the left by h units, then its image is (x - h, y)From the given figure
∵ ABCD is a trapezoid
∵ The coordinates of the ponit C are (4, 1)
∴ x = 4 and y = 1
∵ The trapezoid is rotated 90 degrees counterclockwise about the origin
→ By using the 1st rule above, change the sigh of y and switch them
∴ C' = (-y, x)
∴ C' = (-1, 4)
∵ The resulting image is translated 6 units left
→ By using the 2nd rule above subtract the x-coordinate by 6
∴ C" = (x - h, y)
∵ h = 6
∵ x = -1 and y = 4
∴ C" = (-1 - 6, 4)
∴ C" = (-7, 4)
∴ The coordinates of C" are (-7, 4)
PLZ HELP ASAP!!!!! Show all work
Answer:
a) 198.7% interest
Not too sure about answer to (b)
b) 4.75% annualized
Step-by-step explanation:
a) i used Interest = Principal x Rate x Time
40 = 525 x [tex]\frac{14}{365}[/tex] x r
40 = 20.13r
r = 1.987 or 198.7%
b) i used this proportion: [tex]\frac{1.98}{1/24}[/tex] = [tex]\frac{x}{1}[/tex] 'x' represents annualized rate
1/24 represents 2 weeks out of a year
1/24x = 1.98
x = 4.75%
how do i do a coordinate plane
Answer:
To find out the coordinates of a point in the coordinate system you do the opposite. Begin at the point and follow a vertical line either up or down to the x-axis. There is your x-coordinate. And then do the same but following a horizontal line to find the y-coordinate.
Step-by-step explanation:
If Rectangle A has a length of 4 and a width of 2 and Rectangle B has a length of 16 and a width of 8 what would the scale factor be from A to B
Answer:
4
Step-by-step explanation:
To know the scale factor here, just know that 16/4 = 4, and 8/2 = 4 too, so the scale factor is 4.
Just that the respective sides need to have the same ratio.
Note, if it was from B to A, it'd be 1/4.
Answer:
I took the test the answer isnt 4 its 7 hes wrong
Step-by-step explanation:
glad to help :)
8s-3x+4k= what is the answer
Answer:
K= -2s + 0.75x is answer
Step-by-step explanation:
I hope it's helpful!
Answer:
v
Step-by-step explanation:
a primary school has a running track.
it has two straights of 50 metres.
also there are two bends that are semicircles with diamter 30 metres
work out the distance around the running track
Answer:
Distance around the track = 194.3 metres.
Step-by-step explanation:
Given: The two straight sides are of the track are 50 metres each
Diameter of each bend = 30 metres
Thus;
radius of the bends = [tex]\frac{diameter}{2}[/tex]
= [tex]\frac{30}{2}[/tex]
= 15 metres
So that,
length of the semicircular bend = [tex]\frac{1}{2}[/tex] x 2[tex]\pi[/tex]r
= [tex]\pi[/tex]r = [tex]\frac{22}{7}[/tex] x 15
= 47.143
length of each semicircular bend is 47.14 metres.
Distance around the track = addition of the length of each straight sides + addition of the length of the bends
= 50 + 50 + 47.14 + 47.14
= 194.28
Therefore,
Distance around the track = 194.3 metres.
What is the period of the graph of y = 5 sin (4 pi x) + 3?
A. 5
B. 1/2
C. 4pi
D. 3
2. A line has an x-intercept of 2 and a y-intercept of 5. What is the slope
of the line?
Answer:
-5/2
Step-by-step explanation:
Use slope formula:
Given 2 points (x1, y1) and (x2, y2) Slope is
y2-y1/x2-x1
The x intercept is 2, the point would be (2,0)
The y intercept is 5, the point would be (0,5)
So you can do (5-0)/(0-2) which is 5/-2 which then would be -5/2
help help help help help help help help!!!!
Answer:
c is the answer have a nice day
Step-by-step explanation:
X=3y
Y=x+4
I have the answers. I just need help showing my work plz :)
Step-by-step explanation:
Given, x=3y and y=x+4
y=3y+4.... substituting x=3y
y-3y=4
-2y=4
y=-2
Then substitute -2 either in x=3y or y=x+4 equations
x=3(-2)
=-6
Write and solve an inequality that represents the number of apples, x, you can buy if each apple costs .75 cents and you have to spend less than $9.
Answer:
0.75x<9
Step-by-step explanation:
0.75x<9
0.75/0.75x < 9/0.75
x<12
PLEASE HURRY !! Which point is located at (2, -3)?
Answer:
the answer is K for (2,-3)
Gary went to the hardware store. He bought five boards for $8 each and a box of nails for $6. What was the change in the amount of money Gary had?
Answer:
$46 lessStep-by-step explanation:
Let Gary had x amount of money.
He spent:
$8*5 + $6 = $46He now has:
x - $46He has $46 less than had before
The image below is an example of what construction?
Answer:
a regular hexagon
Step-by-step explanation:
6 corners
Which of the following logarithms do not exist?
a) logarithms with fractional bases
b) logarithms of negative numbers
c) logarithms that equal zero
d) logarithms of irrational numbers
Answer:
B. logarithms of negative number don't exist
Answer:
B. logarithms of negative number
Step-by-step explanation:
please help me with this math question T-T
Subtract (8x + 6) − (x + 4).
I WILL BE MARKING BRAINLIST!
Answer:
7x+10
Step-by-step explanation:
match like terms
8x-x+6+4
7x+10
Answer:
[tex]7x+2[/tex]
Step-by-step explanation:
Alright. First, we have to remember that anything, even a minus sign, directly outside of a term in parentheses means that the term is being multiplied by that number or sign outside of it. A minus sign simply means -1.
I'm going to show you one method. There might be another one, but this method will be useful later in algebra.
So, we've established that a minus sign is actually -1. Now, let's rewrite the equation.
[tex](8x+6)-1(x+4)[/tex]
We'll simplify this now by removing the parentheses and distributing that -1.
[tex]8x+6-x-4[/tex]
Rearrange.
[tex]8x-x+6-4[/tex]
Combine like terms.
[tex]7x+2[/tex]
So, [tex](8x+6)-(x+4)[/tex] equals [tex]7x+2[/tex].
Jacob invests $6,047 in a retirement account with a fixed annual interest rate of 8% compounded continuously. What will the account balance be after 15 years?
A) $20,076.75
B) $17,280.22
C) $18,533.17
D) $21,640.41
if the simple interest on $3,000 for 2 years is 300 then what is the interest rate
Answer:
The class sociologist Max Weber formulated a three-component theory of stratification that saw political power as an interplay between “class”, “status” and “group power. ” Weber theorized that class position was determined by a person’s skills and education, rather than by their relationship to the means of production
Answer:
Does that make sense??
Step-by-step explanation:
Have A Wonderful Day !!
The class sizes of the Introductory Psychology courses at a college are shown below.
121, 134, 106, 93, 149, 130, 119, 128
The college adds a new Honors Introductory Psychology course with 45 students. What effect does the new class size have on the center and
spread of the class sizes of the Introductory Psychology courses at the college?
OA. The value of the center decreases and the distribution has a smaller spread.
O B. The value of the center increases and the distribution has a larger spread.
OC. The value of the center increases and the distribution has a smaller spread.
OD. The value of the center decreases and the distribution has a larger spread.
Answer:
pic of question
Step-by-step explanation:
option D) The value of the center decreases and the distribution has a larger spread.
What is the mean of a distribution?Mean is the measure of the central tendency or the average of the given numbers and is calculated by dividing the sum of given numbers by the total number of numbers.
Given here the distribution as 121, 134, 106, 93, 149, 130, 119, 128
therefore their mean is = (121+134+106+ 93+ 149+ 130+ 119+ 128)/8
= 122.5
Again after the new course was added the new mean is
= (121+134+106+ 93+ 149+ 130+ 119+ 128+45)/9
= 113.88
Hence clearly the mean has decreased and the distribution has a larger spread.
Learn more about the mean here:
https://brainly.com/question/13451489
#SPJ2
Which is more, 1 pint or 16 fluid ounces?
Answer:
they are the same
Step-by-step explanation:
Answer:
there the same I think. sorry if its wrong
If the maximum value of y =-x²+ax+b is 8 when x = 3, find the values of a and b
A picture that is 6 3/4 feet wide has to be centered on a wall that is 15 1/2 feet wide, how much space is there from the edge of the wall to the picture.
will mark brainliy
Solve the Equation for f: -2/3f-4=10 *
Answer:
F=-21
Step-by-step explanation:
M a t h w a y