Answer:
y = -3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityStep-by-step explanation:
Step 1: Define
-8 = 2y - 2
Step 2: Solve for y
[Addition Property of Equality] Add 2 on both sides: -6 = 2y[Division Property of Equality] Divide 2 on both sides: -3 = yRewrite/Rearrange: y = -3Step 3: Check
Plug in y into the original equation to verify it's a solution.
Substitute in y: -8 = 2(-3) - 2Multiply: -8 = -6 - 2Subtract: -8 = -8Here we see that -8 does indeed equal -8.
∴ y = -3 is the solution to the equation.
My sister and I are buying a television for our room. Because I am older, I will pay $45 more than my sister. If the television costs $299, then how much does my sister have to pay.
Which expression shows a sum of four terms?
A) 4+ x + 4 + x
B) x4
C) 4(x + 4)
D) 4x
Valencia is solving this number riddle using guess and check. What number multiplied by eight is equal to forty? Valencia must find . To use guess and check, Valencia can different numbers by . multiplied by eight is equal to forty.
Answer:
first one is A second on is C third is B fourth is B HOPE THIS HELPS
Answer:
1. A
2.C
3.B
4.B
Step-by-step explanation:toke test
Which quadrant does the terminal side of angle -190° lie?
Answer:
Quadrant lll
Step-by-step explanation:
Since the cosine of the angle is positive, the sine of the angle must be negative and the terminal side of the angle lies in either Quadrant III or IV.
The total cost for a takeout plate at a buffet is modeled by the equation c=2.75p+3.00, where p is the weight of the takeout plate. Which best described the domain of the equation
A. The total cost for a plate
B. The cost per pound for a plate
C. The flat fee charged for every plate
D. The possible weights of a plate
Answer:
A
Step-by-step explanation:
write the equation of the line
that passes through the points.
(-1, -7) and (1, 3)
Answer the statistical measures and create a box and whiskers plot for the following set of data
2,5,7,8,8, 10, 11, 12, 14, 14, 15, 16, 18, 18, 19
Min:
Q1:
Med:
Q3:
Max:
Answer: 478161
Step-by-step explanation:
Evaluate -2x^2y, if x=-3 and y=-1.
-12
18
O 12
-18
Answer:
mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
questions
Step-by-step explanation:
mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
Help I’m being timed
Answer:
its always the third one
Step-by-step explanation:
Have a good day
Answer:
I would say 32 but I'm not sure
Step-by-step explanation:
HELP FAST FAST FAST FAST
Answer:
H.
Step-by-step explanation:
Look closely, and eliminate the ones that don't work.
The lunch lady has 12 pounds of lasgana. If she makes 1/3 pound servings using this amount of lasgana how many servings can she make?
How do you solve the equation
Please explain
Answer:
x=27
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
5/3x-4/3x-1=8
5 /3 x+ −4 /3 x+−1=8
(5 /3 x+ −4 /3 x)+ (−1) =8 (Combine Like Terms)
1/3x-1 =8
1/3x=9
(1/3 x) x 3 = 3 x 9
x=27
Answer: x=27
Step-by-step explanation: if you want to Solve for X, you have to by simplify both sides of the equation, then isolating the variable.
what is the missing number in 100+
blank=1,0000
Answer:
9900
Step-by-step explanation:
Answer:
0.01
Step-by-step explanation:
describe the possible values of a
Answer:
its the second one can u make me brain list
Step-by-step explanation:
Responses which are acquired after birth are called _____ responses.
Answer:
Learned
Step-by-step explanation:
I luv u!
Find the degree of the monomial.
8b^7c^2
The degree of the monomial is?
Answer:
49c2
Step-by-step explanation:
A jar contains 93 marbles, of which 32 are blue, 20 are red, and the rest are green. What is the ratio of green marbles to all marbles?
Answer: 52:41
Step-by-step explanation:
using the graph of the quadratic function, identify the domain
Answer: Choice B) -infinity < x < infinity
==========================================================
Explanation:
The parabola goes on forever to the left and to the right. We can plug in any x value without worrying about something as a division by zero error. So any real number will work.
Writing -infinity < x < infinity refers to the entire number line, which is the set of all real numbers.
wich of these can be write as an equation
Which rectangular equation represents the parametric equations x =t Superscript one-half and y = 4t?
ANSWER: A
The rectangular equation that represents the parametric equation [tex]x=t^{\frac{1}{2} }[/tex] and y = 4t is:
[tex]y=4x^2[/tex] for [tex]x\geq0[/tex]
Note the given representations:
[tex]x=t^{\frac{1}{2} }[/tex]
[tex]y=4t[/tex]
Make t the subject of the formula from the expression [tex]x=t^{\frac{1}{2} }[/tex]
[tex]x^2=t^{\frac{1}{2}\times2\\\\x^2=t\\t=x^2[/tex]
Substitute [tex]t=x^2[/tex] into y = 4t
[tex]y=4x^2[/tex]
Therefore, the rectangular equation that represents the parametric equation [tex]x=t^{\frac{1}{2} }[/tex] and y = 4t is:
[tex]y=4x^2[/tex] for [tex]x\geq0[/tex]
Learn more on parametric equation here: https://brainly.com/question/14746714
#SPJ2
factor the expression: 14 + 28
Answer:
14 + 28 = 42
Step-by-step explanation:
2 x 3 x 7
Lovely Lawns, Inc., intends to use sales of lawn fertilizer to predict lawn mower sales. The store manager estimates a probable six-week lag between fertilizer sales and mower sales. The pertinent data are:
Period Fertilizer Sales Number of Mowers Sold
1 1.6 12.0
2 1.3 10.0
3 1.8 13.0
4 2.0 15.0
5 2.2 15.0
6 1.5 11.0
7 1.6 12.0
8 1.4 10.0
9 1.8 13.0
10 1.4 10.0
11 1.9 15.0
12 1.4 11.0
13 1.7 14.0
14 1.4 13.0
a. Determine the correlation between the two variables. Does it appear that a relationship between these variables will yield reasonable predictions?Explain.
b. Obtain a linear regression line for the data.
c. Predict expected lawn mower sales for the first week in August, given fertilizer sales six weeks earlier of 2 tons.
Answer:
R = 0.8815 ;
y = 6.14679X + 2.33028 ;
14.624
Step-by-step explanation:
Using an online correlation Coefficient calculator, the correlation Coefficient, R between the number of lawn fertilizer sold and the number of lawn mowers sold is 0.8815. This R value depicts a strong positive correlation between both variables.
The regression line equation obtained by Plotting the values to generate a linear model is :
y = 6.147X + 2.330
With ;
Slope or gradient being 6.147
Intercept = 2.330
C.)
x = 2
y = 6.147X + 2.330
y = 6.147(2) + 2.330
y = 14.624
THERE CAN BE 2 OR MORE EVEN 1
Answer:
3(13.50+6.50s) and 3(20.00s)
Step-by-step explanation:
A test has 20 questions. If Peter gets 80% correct, how many questions did Peter miss?
Answer:
4
Step-by-step explanation:
20 x 0.80
16 - 20
Answer:
4 questions
Step-by-step explanation:
4 wrong = 80%
Type the slope-intercept equation of the line that passes through the points (6, 5) and (-6, -4)
Answer:
y=3/4x+1/2
Step-by-step explanation:
slope intercept form: y=mx+b
find the slope with y2-y1/x2-x1: (-4-5)/(-6-6)= 3/4
substitute one of the coordinates in the equation with the slope: 5=3/4(6)+b
solve to find b:
b=1/2
substitute in the equation:
y=3/4x+1/2
A tank contains 250 liters of fluid in which 20 grams of salt is dissolved. Brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 5 L/min; the well-mixed solution is pumped out at the same rate. Find the number A(t) of grams of salt in the tank at time t.
Answer:
[tex]A(t)=250-230e^{-\frac{t}{50} }[/tex]
Step-by-step explanation:
A(t) is the amount of salt in the tank at time t.
dA / dt = rate of salt flowing into the tank - rate of salt going out of the tank
dA / dt = (1 g/L)*(5 L/min) - (A(t)/250 g/L) * (5L/min)
dA / dt = 5 g/min - (A(t) / 50) g/min
[tex]\frac{dA}{dt}+\frac{A(t)}{50} = 5\\\\The\ integrating\ factor(IF)= e^{\int\limits \frac{1}{50}dt }=e^{\frac{t}{50} }\\\\Multiplying\ through\ by\ the\ I.F:\\\\\frac{dA}{dt}*e^{\frac{t}{50} }+\frac{A(t)}{50}*e^{\frac{t}{50} } = 5*e^{\frac{t}{50} }\\\\Integrating \ both \ sides:\\\\\int\limits[ \frac{dA}{dt}*e^{\frac{t}{50} }+\frac{A(t)}{50}*e^{\frac{t}{50} }] dt=\int\limits 5e^{\frac{t}{50} } dt\\\\A(t)e^{\frac{t}{50} } =\int\limits 5e^{\frac{t}{50} } dt\\\\[/tex]
[tex]A(t)e^{\frac{t}{50} } =250e^{\frac{t}{50} }+C\\\\A(t)=250+Ce^{-\frac{t}{50} }\\\\But\ A(0) = 20\\\\20=250+Ce^{-\frac{0}{50} }\\\\C+250=20\\\\C=-230\\\\A(t)=250-230e^{-\frac{t}{50} }[/tex]
Taylor can clean pools at a constant rate of 2/5 pools/hour. How many pools can Taylor clean in 25 hours
Answer:
He can clean 10 pools in 25 hours.
Step-by-step explanation:
Help me, please if you can
Answer:
VXW
Step-by-step explanation: Since the first one is the same model as the 2nd but with different letter and the order for the first one would be the same as the 2nd model.
On your math quiz, you earn 5 points for each question that you answer correctly. In the equation below, x represents the number of questions that you answer correctly on your math quiz, and y represents the total number of points that you score on your quiz.
Answer:
you earn 25 because 5x5 is 25
Step-by-step explanation:
Answer:
Dependent-y
Independent-x
Step-by-step explanation:
50 POINTS!! PLS PLS HELP ME
What method would you call this???? (Factor the polynomial 6x^2-x-2)
I got this answer by first breaking the expression into groups [(6x^2+3x)+(-4x-2)] and then I factor out the 3x from the 6x^2+3x which then that becomes 3x(2x+1). Then I factor out -2 from-4x-2 which becomes -2(2x+1) and then so far we have 3x(2x+1)-2(2x+1) and then we factor out the common term 2x+1 and then we have (2x+1)(3x-2) as our answer.
Answer:
Counting Method
Step-by-step explanation:
I tink I am 2nd grade so sorry if wrong we are learning that
Answer:
yeah it's counting method