Answer:
I have no idea how to read
Step-by-step explanation:
write the equation of this line in y= mx + b form:
Answer:
y = 2.5x + 3
Step-by-step explanation:
y = mx + b
y = 2.5x + 3
As you can see, each unit is not 1, its 0.5. We need to go up 5 times, and so 0.5 times 5 gives us 2.5, and thats how i got my slope.
I got 3 as my y-intercept because it's were the line intersects the y axis.
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Answer:
y=5x+3
Step-by-step explanation:
Slope: y2-y1 over x2-x1 so it will be 3-(-2) over 0-(-1) and the answer will be 5.
Y intercept: In order to find the y intercept it is necessary to replace the y an x coordinate in the equation: y= mx+b and replace 3=5(0)+b... simplifying would be 3=b
so the final answer would be y=5x+3
$1111 at 11% for 11 years
Answer:
$1344.31
Step-by-step explanation:
1111*0.11*11=1344.31
What is an equation of the line that passes through the points (4, -5) and (2, 0)?
Answer:
y = - [tex]\frac{5}{2}[/tex] x + 5
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (4, - 5) and (x₂, y₂ ) = (2, 0)
m = [tex]\frac{0+5}{2-4}[/tex] = [tex]\frac{5}{-2}[/tex] = - [tex]\frac{5}{2}[/tex] , then
y = - [tex]\frac{5}{2}[/tex] x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (2, 0 )
0 = - 5 + c ⇒ c = 0 + 5 = 5
y = - [tex]\frac{5}{2}[/tex] x + 5 ← equation of line
Find the composition of transformations that map ABCD to EHGF. Reflect over the x axis then translate.
Answer:
[(x + 6), (y + 1)]
Step-by-step explanation:
Vertices of the quadrilateral ABCD are,
A → (-5, 2)
B → (-3, 4)
C → (-2, 4)
D → (-1, 2)
By reflecting the given quadrilateral ABCD across x-axis to form the image quadrilateral A'B'C'D',
Rule for the reflection of a point across x-axis is,
(x, y) → (x , -y)
Coordinates of the image point A' will be,
A(-5, 2) → A'(-5, -2)
From the picture attached, point E is obtained by translation of point A'.
Rule for the translation of a point by h units right and k units up,
A'(x+h, y+k) → E(x', y')
By this rule,
A'(-5 + h, -2 + k) → E(1, -1)
By comparing coordinates of A' and E,
-5 + h = 1
h = 6
-2 + k = -1
k = 1
That means
Rule for the translation will be,
[(x + 6), (y + 1)]
I need help answering this question for trig equations.
Sec^2x+4secx=-4
Answer:
x = 120°
Step-by-step explanation:
We are given;
sec²x + 4secx = -4
Rearranging gives;
sec²x + 4secx + 4 = 0
Factorizing the left hand side gives;
(sec x + 2)(sec x + 2) = 0
This means that;
(sec x + 2) = 0
From trigonometry, we know that sec x = 1/cos x
Thus;
(1/cos x) + 2 = 0
1/cos x = -2
cos x = -1/2
cos x = -0.5
x = cos^(-1) -0.5
x = 120°
A polling firm wants to use a one-sample z interval to estimate what proportion of voters in a country plan on
voting for a certain candidate. They want the margin of error to be no more than £3% at 99% confidence.
What is the smallest sample size required to obtain the desired margin of error?
Answer:
1844
Step-by-step explanation:
For polling firm survey on voters, the smallest sample size which is required to obtain the desired margin of error, is 1850.
What is margin of error?The probability or the chances of error while choosing or calculating a sample in a survey is called the margin of error.
[tex]MOE=z\times\dfrac{\sigma}{\sqrt{n}}[/tex]
Here, z is the critical value and n is the sample size.
Here, a polling firm wants to use a one-sample z interval to estimate, the number of proportion of voters in a country plan on voting for a certain candidate.
The margin of error for this test is 3% or 0.03 and the confidence interval is 99 percent.
The z value on the confidence interval of 99 percent is 2.576. Here, the standard deviation for this survey is 50 percent, or 0.50.
Put the value in the above formula as,
[tex]0.03=(2.576)\times\dfrac{0.5}{\sqrt{n}}\\n\approx1850[/tex]
Hence, for polling firm survey on voters, the smallest sample size which is required to obtain the desired margin of error, is 1850.
Learn more about the margin of error here;
https://brainly.com/question/10218601
Write 14/square root of 2 + square root of 50 in the form b square root of 2 where b is an integer
Step-by-step explanation:
[tex] \frac{14}{ \sqrt{2} } + \sqrt{50} \\ \frac{ \sqrt{2} \times \sqrt{2} \times 7}{ \sqrt{2} } + \sqrt{25 \times 2} \\ \\ 7 \sqrt{2} + 5 \sqrt{2} = 12 \sqrt{2} [/tex]
The given expression can be written in the form of b√2 as 12√2 where b = 12.
What is an Algebraic expression?An algebraic expression can be obtained by doing mathematical operations on the variable and constant terms.
The variable part of an algebraic expression can never be added or subtracted from the constant part.
The given expression is [tex]14/\sqrt{2}+\sqrt{50}[/tex].
It can be rewritten as,
[tex]14/\sqrt{2}+\sqrt{50}[/tex]
Multiply √2 to both numerator and denominator of 14/√2 as,
14√2/2 + √50
⇒ 7√2 + √(5 × 5 × 2)
⇒ 7√2 + 5√2 = 12√2
On comparing 12√2 with b√2, it is obtained as,
b = 12
Hence, the given expression can be written as 12√2.
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An account earns simple interest. Find the principal.
Interest earned: $27
Principal: ?
Interest rate: 1.5%
Time: 2 years
The principal is $
Answer:
$ 900
Step-by-step explanation:
Simple interest = Principle * Time * Rate / 100
Now by substituting :
27 = Principle * 2 * 1.5 / 100
Principle = 27 * 100 / 2 * 1.5
Principle = 2700 / 3
So Principle = $ 900
Hope it helps
PLEASE HELP :))
3
Solve for x.
6
12
5
r-1
Answer:
12 is the answer
Step-by-step explanation:
12 is the answer
Find the sum 1.56 + 0.083. Show your reasoning
Answer:
1.643
Step-by-step explanation:
1.56 + 0.083
1.56 = 1.560
Starting from the digits the closest to the right, we do
0.003 + 0.000 = 0.003
0.08 + 0.06 = 0.14
so right now we have 0.143
0.0 + 0.5 = 0.5
so now we have 0.643 (because 0.1 + 0.5 = 0.6)
and finally 1 + 0 = 1
so we end with 1.643
The sum of the expression 1.56 + 0.083 is,
⇒ 1.643
What is Addition?The process of combining two or more numbers is called the Addition. The 4 main properties of addition are commutative, associative, distributive, and additive identity.
Given that;
The expression is,
⇒ 1.56 + 0.083
Now, We can simplify as;
⇒ 1.56 + 0.083
Add as;
⇒ 1.643
Thus, The sum of the expression 1.56 + 0.083 is,
⇒ 1.643
Learn more about the addition visit:
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A bike rental shop charges $8 per hour and $4 insurance. How many hours can I rent the bike for if I have $20.
Answer:
2 hours
Step-by-step explanation:
Subtract the 4 already then divide 16 by 8 and you get 2 :)
PLS HELP... WILL MARK BRAINLIESST!!!!!
Answer:
bro its c i promise
Step-by-step explanation:
trust me
does anyone know if each square weighs 5 pounds. what is the weight of a single triangle?
Work out the perimeter of a regular octagon with side length 2.6mm
Answer:
20.8mm
Step-by-step explanation:
We know that an octagon has 8 sides, and since this is a regular octagon we can safely say that all sides are equal.
This means all sides are 2.6mm.
So if we run the calculation:
2.6mm × 8 = 20.8mm (Side Length × Number of Sides = Perimeter)
We have our final answer!
In EFG, L is the centroid. If LJ=9 find EL.
Answer:
LG=LE=LF since it is the centroid. So I think it would also be 9.
A salesperson earns a commission of $378 for selling $2100 in merchandise find the commission rate write your answer as a percentag
Answer:
18%
Step-by-step explanation:
Given data
commission = $378
sales =$2100
Hence the percentage is given as
= 378/2100*100
=0.18*100
= 18%
Hence the percentage commission is 18%
Devon has been saving $5 & $10 for the past four years. Over spring break he wanted to see how much money he has saved up. After counting the money he calculated that he has a total of $395 & had 49 bills. Based on this information, how many $5 & $10 bills does he have?
Answer:
19 five dollar bills
30 ten dollar bills
Step-by-step explanation:
x=number of $5 bills
y=number of $10 bills
x+y=49
x=49-y
5x+10y=395
substitute for x
5(49-y)+10y=395
245-5y+10y=395
245+5y-245=395-245
5y=150
5y/5=150/5
y=30
x=49-30=19
three times a number is 180 less than seven times the number. what is the number?
170% of what number is 35? Provide an exact fraction answer.
Answer: 25.88
Step-by-step explanation:
As a fraction it is 22/25 pls mark brainliest
20 points, help. I have this due in like 20 minutes.
Answer:
in sequence, -7, 3, 43, -27
Step-by-step explanation:
I = Prt (solve for P)
Answer:
Step-by-step explanation:
Divide both sides by rt
[tex]P=\frac{I}{rt}[/tex]
Answer:
[tex]p=\frac{i}{rt}[/tex]
Step-by-step explanation:
How many times bigger is a group of 21 marbles than a group of 7 marbles?
Answer:
21/7=3
3 times bigger.
Step-by-step explanation:
can someone help? i need help ♀️
Answer:
Mean: 29.6
MAD: 10
Step-by-step explanation:
Answer:
Mean = 29.6
MAD = 10
Step-by-step explanation:
For the mean, just add all of the points together and divide it by 10 since there are 10 games.
For the MAD, use the mean and subtract is from each of the games. As an example, just do 23-29.6 and ignore if it is a negative sign. Do it for all and then add up the leftovers. Then divide it by the 10 games.
(6.6+1.4+1.6+8.4+10.6+8.4+15.4+4.6+26.6+16.4)/10
Check out a khan academy video about it if you're having trouble
In a right triangle, the measure of one acute angle is twice the sum of the measure of the other acute angle and 30. Find the measure of each acute angle in the triangle
Answer:
Step-by-step explanation:
if we have a right triangle,
one angle=90
180-90=90
let x be one angle, and y another angle
the other is 2x+30
x+2x+30=90
3x=60
x=20
y=70
The measure of each acute angles are 80 degrees and 10 degrees.
The triangle is a right angle triangle. This means one of its angles is 90 degrees.
The other 2 angles sum up to 90 degrees.
An acute angle is less than 90 degrees.
The measure of one acute angle is twice the sum of the measure of the other
acute angle and 30. Therefore,
first acute angle = x
let the other angle = y
y = 2(x + 30)
y = 2x + 60
2x - y = -60
x + y = 90
3x = 30
x = 30 /3
x = 10 degrees
y = 90 - 10
y = 80 degrees
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In the triangle below, what is the length of the side opposite the 30 degree angle?
Answer:
A. 3/2
Step-by-step explanation:
To find the lenght of the side opposing the 30° angle, you need to use trigonometry, since it's a right-angled triangle. You have your 30° angle and you have the side beside : therefore, you can use the sine :
sin(30) x 3 = ?
0,5 x 3 = ?
1,5 = ?
1,5 = 3/2
what do you call this form of quadratic function y=ax2+bx+c? how about y=a(x-h)2+k
Answer:
1. standard form
2. vertex form
PLZZZ GIVING BRAINLIST
Answer:
[tex] \dfrac{-7600}{3} [/tex]
Step-by-step explanation:
The plane is descending, so the change in height is a negative change.
rate of descent = (change in height)/time
rate of descent = (new height - old height)/time
rate of descent = (7400 ft - 15000 ft)/(3 min)
rate of descent = (-7600 ft)/(3 min)
Answer: [tex] \dfrac{-7600}{3} [/tex]
Solve the system of lineal ed
3. y = -3/2 x + 1
y = 12x-3
Answer:
nose pero descarga symbolab en play stores ahí te dará la respuesta
2(x+3)=x-4
help please
Answer:
Step-by-step explanation:
Distribute
2x+6 = x-4
Subtract 6 on both sides
2x = x-10
Subtract x on both sides
x = -10
2(x+3)=x-4 perform indicated multiplication on left side
2x+6=x-4 subtract d from both sides
x+6=-4 subtract 6 from both sides
x=-10
HELPPPP FAST!!! get brainliest if right
Answer:
60
Step-by-step explanation:
150/250 means she would have sold 60% of the corn, and 60% is 60/100 so no further work is required because the corn at start is already 100.