Answer:
5 hours
Step-by-step explanation:
100 - 15 = 75
75 ÷ by 15 = 5
Erin will need to work 5 more hours to pay her bill
Answer:
5 hours
Step-by-step explanation:
Erin needs $100 to pay the bill.
She has $25 in the bank.
First let's find how much money she needs more
[tex]100-25=75[/tex]
She needs $75
They said that,
she earns $15 per hour from her job.
Let the unknown hours be x.
Now let's find the hours she have to work to earn $75
1h = $15
x = $75
Use cross multiplication
[tex]75*1=15x\\\frac{75}{15} =\frac{15x}{15} \\5 h=x[/tex]
She needs to work for 5 hours in order to have the $100
Hope this helps you.
Let me know if you have any other questions :-)
A rental car agency charges $210.00 per week plus 0.25 per mile to rent a car. How many miles can you travel in one week for $347.00
Answer:
548 miles
Step-by-step explanation:
O.25m + 210 = 347
0.25m = 347 - 210
0.25m = 137
m = 137/0.25
m = 548
Question: adding unlike fractions
3/7 + 3/21
Step-by-step explanation:
first, find a common denominator
3/7 = 9/21
3/21 stays the same.
then, add
9/21 + 3/21 = 12/21
and if possible, simplify
12 and 21 are both divisible by 3, so divide by 3.
12/3= 4, 21/3=7
so, 3/7 + 3/21 = 4/7
Answer:
4/7
Step-by-step explanation:
The fraction 3/21 can be simplified. The 3 divides 21 which 7, so the fraction can be written as 1 /7. Now, we just have:
3/7 + 1/7
We need to add the numerators to get one fraction:
4/7
Which has the greater surface area? A 6-centimeter cube or a rectangular prism with a 3
centimeter square base and a height of 12 centimeters?
Answer: 6 centimeter cube
Step-by-step explanation: Based on wideness.
Suppose a population consists of many copies of the numbers 1, 2, and 3. If you choose a sample of size 2, what are the possible values of the sample mean
Answer:
9
Step-by-step explanation:
it just is
Question
Express the inequality x > -1 using interval notation
Step-by-step explanation:
x > -1
x = {0,1,2,...}
[tex] \lang -1,+\infty \rang[/tex]
Which expression means "2 more than the quotient of a number and 3?
A. 2 + 3
B. - 2
C. 3x + 2
D. 3 +2
No links plsss and look at the
Photo
Answer:
A
Step-by-step explanation:
a bag of candy contains 5 purple jolly rangers 8 blue jolly rangers 6 red jolly rangers what is the ratio of purple jolly rangers to blue or green jolly rangers
Answer:
purple to blue - 5:8
I think you meant green is red
purple to red - 5:6
Step-by-step explanation:
In which order are the operations performed when solving for m in the follow equation? 3m + 8= 20 A) Subtract 8, divide by 3. B) Add 8, multiply by 3. C) Add 20, multiply by 3. D) Add 8, divide by 20.
Answer:
A
Step-by-step explanation:
3m+8=20
3m=20-8
3m=12
m=4
Find the percent increase. Round to the nearest percent.
From 15 friends to 17 friends
Answer:
13%
Step-by-step explanation:
Subtract 15 from 17 to find the increase -
17 - 15 = 2
Divide 2 by the original friend amount -
2/15 = 0.133
Multiply 0.133 by 100 to find the percent -
13.3
Round to the nearest percent:
13% increase
I just need help thank you
Answer:
7x+5x-5=-5+12x
18x+5x-12x=5-5
0=0
6y-30=20+6y
6y-6y=50
0=50??
i didn't understand what's the question. i guess equations but weird answers
[tex] \sf 3a. \quad \frak{7x + 5(x - 1) = - 5 + 12x} \\ \\ : \implies \frak{7x + 5x - 5 = - 5 + 12x} \\ \\ : \implies \frak{7x + 5x - 5 = - 5 + 12x} \\ \\ : \implies \frak{12x - \cancel5 + \cancel5=12x} \\ \\ : \implies \frak{ \cancel{12x} - \cancel{12x} = 0} \\ \\ \star \qquad \underline{ \blue{\frak{x = undefined}}}[/tex]
[tex] \sf3b. \quad \frak{6(y - 5) = 2(10 + 3y)} \\ \\ \dashrightarrow \frak{6(y - 5) = 2(10 + 3y)} \\ \\ \dashrightarrow \frak{6y - 30= 20 + 6y} \\ \\ \dashrightarrow \frak{0y = 50} \\ \\ \star \qquad \underline{ \blue{\frak{y = undefined}}}[/tex]
The process standard deviation is 0.14, and the process control is set at plus or minus 2.4 standard deviations. Units with weights less than or greater than ounces will be classified as defects. What is the probability of a defect (to 4 decimals)
Answer:
The process standard deviation is 0.14, and the process control is set at plus or minus 2.4 standard deviations. Units with weights less than 10.664
Step-by-step explanation:
^
p(x)=x^3+7x^2+4x-12 find the root of p(x)
factor p(x)
Step-by-step explanation:
Step 1 :Equation at the end of step 1
(((x3) + 7x2) + 4x) - 12
Step 2 :Checking for a perfect cube
2.1 x3+7x2+4x-12 is not a perfect cube
Trying to factor by pulling out :
2.2 Factoring: x3+7x2+4x-12
Thoughtfully split the expression at hand into groups, each group having two terms :
Group 1: x3+7x2
Group 2: 4x-12
Pull out from each group separately :
Group 1: (x+7) • (x2)
Group 2: (x-3) • (4)
Bad news !! Factoring by pulling out fails :
The groups have no common factor and can not be added up to form a multiplication.
Polynomial Roots Calculator :
2.3 Find roots (zeroes) of : F(x) = x3+7x2+4x-12
Polynomial Roots Calculator is a set of methods aimed at finding values of x for which F(x)=0
Rational Roots Test is one of the above mentioned tools. It would only find Rational Roots that is numbers x which can be expressed as the quotient of two integers
The Rational Root Theorem states that if a polynomial zeroes for a rational number P/Q then P is a factor of the Trailing Constant and Q is a factor of the Leading Coefficient
In this case, the Leading Coefficient is 1 and the Trailing Constant is -12.
The factor(s) are:
of the Leading Coefficient : 1
of the Trailing Constant : 1 ,2 ,3 ,4 ,6 ,12
Let us test ....
P Q P/Q F(P/Q) Divisor
-1 1 -1.00 -10.00
-2 1 -2.00 0.00 x+2
-3 1 -3.00 12.00
-4 1 -4.00 20.00
-6 1 -6.00 0.00 x+6
-12 1 -12.00 -780.00
1 1 1.00 0.00 x-1
2 1 2.00 32.00
3 1 3.00 90.00
4 1 4.00 180.00
6 1 6.00 480.00
12 1 12.00 2772.00
The Factor Theorem states that if P/Q is root of a polynomial then this polynomial can be divided by q*x-p Note that q and p originate from P/Q reduced to its lowest terms
In our case this means that
x3+7x2+4x-12
can be divided by 3 different polynomials,including by x-1
Polynomial Long Division :
2.4 Polynomial Long Division
Dividing : x3+7x2+4x-12
("Dividend")
By : x-1 ("Divisor")
dividend x3 + 7x2 + 4x - 12
- divisor * x2 x3 - x2
remainder 8x2 + 4x - 12
- divisor * 8x1 8x2 - 8x
remainder 12x - 12
- divisor * 12x0 12x - 12
remainder 0
Quotient : x2+8x+12 Remainder: 0
Trying to factor by splitting the middle term
2.5 Factoring x2+8x+12
The first term is, x2 its coefficient is 1 .
The middle term is, +8x its coefficient is 8 .
The last term, "the constant", is +12
Step-1 : Multiply the coefficient of the first term by the constant 1 • 12 = 12
Step-2 : Find two factors of 12 whose sum equals the coefficient of the middle term, which is 8 .
-12 + -1 = -13
-6 + -2 = -8
-4 + -3 = -7
-3 + -4 = -7
-2 + -6 = -8
-1 + -12 = -13
1 + 12 = 13
2 + 6 = 8 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, 2 and 6
x2 + 2x + 6x + 12
Step-4 : Add up the first 2 terms, pulling out like factors :
x • (x+2)
Add up the last 2 terms, pulling out common factors :
6 • (x+2)
Step-5 : Add up the four terms of step 4 :
(x+6) • (x+2)
Which is the desired factorization
Final result :
(x + 6) • (x + 2) • (x - 1)
6.
Write an equation for each translation of y = |x| .
5.5 units right
A. y = | x | + 5.5
B. y = | x | – 5.5
C. y = | x – 5.5 |
D. y = | x + 5.5 |
Answer:
C. y = | x – 5.5 |
Step-by-step explanation:
y = f(x) + n - moves the graph n units up
y = f(x) - n - moves the graph n units down
y = f(x + n) - moves the graph n units to the left
y = f(x - n) - moves the graph n units to the right
5.5 units to the right
y = f(x - 5.5) = |x - 5.5|
...................................................................................................................................................
Can someone plz check this? Ik this is odd lol
Answer:
You're correct
Step-by-step explanation:
Have a good day :)
You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is 0.214. How confident can you be that your predicted value will be reasonably close to the actual value?
Answer Choices Below!:
Answer:
the correct answer is A.I can’t be confident at all; this is about as close to a random guess as you can get.
Step-by-step explanation:
hope this helps
Decide whether the given number is a solution of the given equation.
Is - 7 a solution of x + 12 = 19?
Answer:
No
Step-by-step explanation:
-7+12=5
Answer:
[tex]x=7[/tex]
-7 is not a solution for [tex]x+12=19[/tex]
Step-by-step explanation:
[tex]x +12 = 19[/tex]
Subtract 12 from both sides
[tex]x = 19-12[/tex]
Subtract 12 from 19 to get 7
[tex]x = 7[/tex]
It would be -7 if it was [tex]-x+12=19[/tex]
please help i'll mark brainliest
Answer: m∠1 = 90°
Step-by-step explanation:
The table shows a proportional relationship between the number of stars Roberto collects in a game and his total points.
Roberto's game
Number of stars Total points
888 121212
101010 151515
141414 212121
? ?
A row of values is missing in the table.
Which numbers of stars and total points could be used as the missing values in the table?
Choose 3 answers:
Choose 3 answers:
(Choice A)
A
222 stars and 333 points
(Choice B)
B
666 stars and 444 points
(Choice C)
C
161616 stars and 242424 points
(Choice D)
D
121212 stars and 181818 points
(Choice E)
E
444 stars and 555 points
Answer:
acd
Step-by-step explanation:
Find the sale price of the item. Round to two decimal places if necessary. Original price: $85.00 Markdown: 33% The sale price is $ .
Answer:
the marked down price is 56.95
Step-by-step explanation:
What is the distance from point A to point C?
A) 4 units
B) 5 units
C) 8 units
D) 9 units
Answer:
C) 8 unitsStep-by-step explanation:
Hope it Helps you!!Pls help i am bad at math
Answer:
[tex]\orange{\rule{40pt}{555555pt}} \green{\rule{40pt}{555555pt}} \blue{\rule{40pt}{555555pt}} \red{\rule{40pt}{555555pt}}\pink{\rule{40pt}{555555pt}}\yellow{\rule{40pt}{555555pt}}[/tex]
Reflect over the y axis; dilate by a scale factor of 2.
==================================================
Explanation:
Let's focus on the bottom-most points of each rhombus. For rhombus A on the left, that point in question is (-3,1). For rhombus B, that corresponding lowest point is (6,2).
If we were to reflect rhombus A over the y axis, then (-3,1) would move to (3,1). Simply swap the sign of the x coordinate while keeping the y coordinate the same. Now compare (3,1) to (6,2). Notice that we can multiply each coordinate of (3,1) by the scale factor 2 so that we jump to (6,2)
[tex](3,1) \stackrel{\text{mult by 2}}{\longrightarrow} (6,2)[/tex]
This "multiply by 2" operation is done to each point of the reflected blue rhombus so that we end up with the green rhombus after all is said and done. Also, this trick of multiplying the coordinates by the scale factor only works if the center of dilation is the origin.
In short, we do two things:
reflect over the y axismultiply each coordinate, of each point, by the scale factor 2which allows us to go from blue (rhombus A) to green (rhombus B)
Find the distance between ─14 and 5 on a number line.
Answer:
It is 19
Step-by-step explanation:
determina la ecuacion de la recta cuyas intersecciones con los ejes x e y se indican respectivamente A(7,0) Y B (0, -4)
Answer:
y = 4/7 - 4
Step-by-step explanation:
Slope = (-4-0) / (0 - 7) = -4/-7 = 4/7
y-intercept: -4 - (4/7)(0) = -4
Use the substitution method to determine the solution type of the following system.
3y - 6x= 3
y = 2x + 1
a Infinitely many solutions
b (2,0)
c (3, -1)
d No solutions
The answer to this is C I think, I'm usually always correct so trust me k?
Identify the percent of change as an increase or a decrease. Then find the percent of change.
Original: 30
New: 51
You must provide the percent as well as if it is an increase or a decrease to receive credit for this question.
Answer:
70% increase
Step-by-step explanation:
51-30 = 21
21/30 = 0.7
0.7 x 100
Consider the equation x3 + 2x = 5.
The above equation cannot have two real roots because:
1. The Mean Value Theorem is not applicable to f on x € [0,2].
2. The Intermediate Value Theorem is not applicable to f on x € (0,2).
3. f'(c) has no real roots.
4. f'(c) has only one real root.
5. All of the other options are incorrect.
Câu A. Một sợi dây không giãn, khối lượng dây không đáng kể, được vắt qua một ròng rọc cố định. Hai đầu dây buộc hai vật có khối lượng tương ứng là m1 =500g và m2 <m1. Sau 2 (s) kể từ lúc bắt đầu chuyển động, hệ vật đi được 400 (cm). Tính m2 và sức căng của dây.
If using the method of completing the square to solve the quadratic equation
x2 + 5x – 21 = 0, which number would have to be added to "complete the
square"?
Answer:
Step-by-step explanation:
ax² + bx + c = y
x² + 5x – 21 = 0
First make sure the (a) term = 1... It is.
Get (c) to zero or blank by adding or subtracting as needed.
x² + 5x – 21 + 21 = 0 + 21
x² + 5x = 21
Add the square of half of the b term to each side
x² + 5x + (5/2)² = 21 + (5/2)²
x² + 5x + (5/2)² = 27.25
rewrite the left side as a square
(x + 2.5)² = 27.25
square root of each side
x + 2.5 = ±√27.25
isolate x
x = -2.5 ±√(27.25)
x ≈ 2.72 or -7.72
Answer:
[tex]\frac{25}{4}[/tex] = 6.25
Step-by-step explanation:
x² + 5x - 21 = 0 ( add 21 to both sides )
x² + 5x = 21
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2([tex]\frac{5}{2}[/tex] )x + [tex]\frac{25}{4}[/tex] = 21 + [tex]\frac{25}{4}[/tex]
(x + [tex]\frac{5}{2}[/tex] )² = [tex]\frac{109}{4}[/tex]
7.
Write an equation for each translation of Y = |x| .
10.5 units left
A. y = | x – 10.5 |
B. y = | x | – 10.5
C. y = | x | + 10.5
D. y = | x + 10.5 |
Answer:
D. y = | x + 10.5 |
Step-by-step explanation:
The + inside of an absolute value equation really means -.
So there will be a horizontal shift left by 10.5 units.
Answer:
D. y = | x + 10.5 |
Step-by-step explanation:
We are given that,
The parent function is .
Now, the parent function is shifted 10.5 units to the left.
Since, shift of a function f(x) by 'k' units to the left changes the function to f(x+k).
So, the new function is given by .
Hence, option D is correct.
what is 3.13 as a fraction
Answer:3.13/1
Step-by-step explanation:
surface area and volumes formula
Step-by-step explanation:
Surface area of what shape or solid ?
