Answers
Answer:
(x, y)= (8, 12)
Step-by-step explanation:
2x - y = 4
y = 4 + x
2x ( 4 + x ) = 4
x = 8
y = 4 + 8
y= 12
Related Questions
At the dentist's office, Serge is getting a cavity filled. His insurance will pay for 80% of
the cost of the filling. If the filling costs $130, about how much will his insurance pay?
Use estimation.
А: $75
B: $80
с: $100
D: $210
Answers
Answer: C is right
Step-by-step explanation: 80 % 0.8. 0.8 x 130= 104
Answer:
C
Step-by-step explanation:
80% of 130 would be 104, since its estimating, it will be around 100.
We had a surprise party for Grandmama she was very surprised. Find the error in the sentence
Answers
Answer:
There needs to be a (.) or an (;)
Step-by-step explanation:
What is the area of the parallelogram?
0.2 m
0.1 m
0.6 m
FAST RESPONSE PLEASE
Answers
Answer:
0.6
Step-by-step explanation:
Please say whether they are equivalent or not
Answers
Answer:
Nothing is here. You may need to reupload question.
You wish to compare the prices of apartments in two neighboring towns. You take a simple random sample of 12 apartments in town A and calculate the average price of these apartments. You repeat this for 15 apartments in town B. Let μ1 represent the true average price of apartments in town A and μ2 the average price in town B. If we were to use the pooled t test, what would be the degrees of freedom?
Answers
Answer:
υ= 25
Step-by-step explanation:
IF we have two small independent samples from two normal populations with means μ1 and μ2 and standard deviations σ1 and σ 2 but unknown ,then the unbiased pooled or combined estimate of the common variance sigma square ha s student's t distribution with degrees of freedom given by
υ= n1+ n2- 2
In the given question
Sample A size= n1= 12
Sample B size = n2= 15
υ= 12+15-2
υ= 25
where
sp²= (n1-1) s1² + (n2-1) s2² / n1+n2-2
Select two ratios that are equivalent to 27: 9.
Choose 2 answers:
А
3:1
B
9:3
С
6:3
9:6
E
12 : 3
Answers
Answer:
A
B
Step-by-step explanation:
Answer:
A and B are the two ratios equivalent to 27:9. All you have to do is divide 27 by 3 and 9 by 3 also and you will get 3:1. Just remember your multiplication tables, you'll find the answer easily.
Hope this helps! :)
what is the area please help asap!
Answers
The labeling isn't very clear but I think the answer is 72...
Have a good day :)
ILL GIVE YOU BRAINLIEST!! 33 POINTS!!!
(ONLY IF YOU GET IT CORRECT)
Answers
Answer:
80 ft
Step-by-step explanation:
the length of an arc is equal to the degree the arc makes
Answer:
A. 28π/9 ftStep-by-step explanation:
Arc length is:
2πr*80°/360° ft = 4π*7/9 ft =28π/9 ftCorrect choice is A
2 and 2/5 divided by 1 and 1/2 =
Answers
Answer:
1.6 2 and 2/5 divided by 1 and 1/2 =1.6
Step-by-step explanation:
Use the greatest common factor and the distributive property to write an equivalent expression in factored form for the following expression: 4d +12e. Do not use spaces.
Answers
Answer:
4
Step-by-step explanation:
The greatest common factor of [tex]4d+12e[/tex] is [tex]4[/tex].
[tex]4(d+3e)[/tex]
Drag a company name into each box to show the total cost from least to greatest.
Answers
Answer:
Company A:
$3 each6% for shipping150*3*1.06 = $477 total costCompany B:
$3.10 each4% for shipping150*3.1*1.04 = $483.60 total costCompany C:
$3.20 eachNo shipping charge150*3.2 = $480 total costLeast cost | Medium cost | Greatest cost
Company A | Company C | Company B
Thomas bought 100 folders he paid $50 for all the folders He said every folder cost five cents do you agree
Answers
Answer:
No, each folder costs 50 cents.
Step-by-step explanation:
0.50*100= 50
Find the measure of each missing angle
Answers
Answer:
ok sooo....
Step-by-step explanation:
angle 1=180-118=62
angle2=62+95=157 180-157=23
angle3=180-23=157
angle4=so i think 23
angle5=and i think 62
ya sry i dont kno i tried might be wrng sry
for the equation 4x+6y+24=0 find:
A)the equation in the slope intercept form
B) The X and Y intercepts
Answers
Answer:
x-intercept: -6 (-6,0 if you need full coordinates)
y-intercept: -4 (0,-4 for full coordinates)
Step-by-step explanation:
I'm in a rush but ask if you need steps
Answer:
a) y = -(2/3)x - 4
b) x-intercept = -6
y-intercept = -4
Step-by-step explanation:
Slope intercept form is
y = mx + b
4x + 6y + 24 = 0
Subtract 4x + 24 from both sides
6y = -4x - 24
Divide both sides by 6
y = -(2/3)x - 4
-------------------------------------
X intercept
at the x intercept y = 0
0 = (-2/3)x - 4
add (2/3) x to both sides
(2/3)x = - 4
Multiply both sides by 3/2
x = -12/2
x = -6
----------------------------
Y intercept
at the y-intercept x = 0
y = -(2/3)0 - 4
y =-4
1.) Determine the type of solutions for the function (Picture 1)
2.) Determine the type of solutions for the function (Picture 2)
3.) Use the formula b2−4ac to determine the value of the discriminant of the function f(x)=2x2+8x+6
Use Desmos Scientific (Picture 3)
4.) Describe the transformations of the function
g(x)=−25(x−4)2+6 from the transformation of the parent function
Use phrases such as: the graph is reflected or not reflected/ the graph gets wider or narrower/ the graph slides left or right _________ units and slides up or down _________ (Picture 4)
Answers
Answer:
1) 2 nonreal complex roots
2) 1 Real Solution
3) 16
4) Reflected, narrower by a factor of 2/5, slides right 4 units and slides up 6 (units)
Step-by-step explanation:
1) The graph does not intercept the x-axis, therefore, there are no real solutions at the point y = 0
We get;
y = a·x² + b·x + c
At y = 6, x = -2
Therefore;
6 = a·(-2)² - 2·b + c = 4·a - 2·b + c
6 = 4·a - 2·b + c...(1)
At y = 8, x = 0
8 = a·(0)² + b·0 + c
∴ c = 8...(2)
Similarly, we have;
At y = 8, x = -4
8 = a·(-4)² - 4·b + c = 16·a - 4·b + 8
16·a - 4·b = 0
∴ b = 16·a/4 = 4·a
b = 4·a...(3)
From equation (1), (2) and (3), we have;
6 = 4·a - 2·b + c
∴ 6 = b - 2·b + 8 = -b + 8
6 - 8 = -b
∴ -b = -2
b = 2
b = 4·a
∴ a = b/4 = 2/4 = 1/2
The equation is therefor;
y = (1/2)·x² + 2·x + 8
Solving we get;
x = (-2 ± √(2² - 4 × (1/2) × 8))/(2 × (1/2))
x =( -2 ± √(-12))/1 = -2 ± √(-12)
Therefore, we have;
2 nonreal complex roots
2) Give that the graph of the function touches the x-axis once, we have;
1 Real Solution
3) The given function is f(x) = 2·x² + 8·x + 6
The general form of the quadratic function is f(x) = a·x² + b·x + c
Comparing, we have;
a = 2, b = 8, c = 6
The discriminant of the function, D = b² - 4·a·c, therefore, for the function, we have;
D = 8² - 4 × 2 × 6 = 16
The discriminant of the function, D = 16
4.) The given function is g(x) = (-2/5)·(x - 4)² + 6
The parent function of a quadratic equation is y = x²
A vertical translation is given by the following equation;
y = f(x) + b
A horizontal to the right by 'a' translation is given by an equation of the form; y = f(x - a)
A vertical reflection is given by an equation of the form; y = -f(x) = -x²
A narrowing is given by an equation of the form; y = b·f(x), where b < 1
Therefore, the transformations of g(x) from the parent function are;
g(x) is a reflection of the parent function, with the graph of g(x) being narrower by 2/5 than the graph of the parent function. The graph of g(x) is shifted right by 4 units and is then slides up by 6 units.
Determine value of k
Answers
72+k=180
Subtract 72 from both sides
K=108°
Your answer is 108°
Josh orders 12 soccer jerseys for his team, including his coach. He pays a total
of R594,60 for the jerseys. What did each jersey cost?
Answers
Answer:
4955
Step-by-step explanation:
soccer jerseys--> 12
total--> R 59460
= 59460 divided by 12
= 4955
Ans: Each jersey costs R 4955.
thenks and mark me brainliestt pls :))
David wanted to go on an amusement park ride. A sign posted at the entrance read “You must be greater than 42 inches tall and no more than 57 inches tall for this ride.” Which inequality would model the height, x, required for this amusement park ride?
Answers
Answer:
42 < x less than or equal to 57
Step-by-step explanation:
The inequality that would model the height, x, required for this amusement park ride is 57 > h > 42.
What is inequality?A statement of an order relationship-greater than, greater than or equal to, less than, less than or equal to- between two numbers or algebraic equations
Now it is given that,
Lower limit of height must be greater than 42 inches
Upper limit of height must be less than 57 inches
If h is the height used for model.
Thus, h < 57 inches
and, h > 42 inches
Therefore the inequality model will be,
57 > h > 42
Thus, the inequality that would model the height, x, required for this amusement park ride is 57 > h > 42.
To learn more about inequality :
brainly.com/question/26644213
#SPJ
School ends at 2:50 P.M. The school day is 6 hours and five minutes long. What time does school begin?
Answers
Answer:
School begins at 8:45
Step-by-step explanation:
take 5 away from 50 and get 45
take 6 away from 2 on a clock is 8
Which of the following integers is greater than −275 and less than 116? A. -127 B. 148 C. 254 D. -315
Answers
Answer:
A) -127
Step-by-step explanation:
A certain control heating process requires that the temperature be raised from − 23 ∘ C at the rate of 4 ∘ C every hour . Find the temperature after 12 hours .
Answers
Answer:
Temperature after 12 hours = 25°C
Step-by-step explanation:
Given:
Current tempreture = -23°C
Tempreture incresing rate = 4°C per hour
Total time = 12 hour
Find:
Temperature after 12 hours
Computation:
Temperature after 12 hours = Current tempreture + (Tempreture incresing rate)(Total time)
Temperature after 12 hours = -23 + (4)(12)
Temperature after 12 hours = -23 + 48
Temperature after 12 hours = 25°C
6 + y= -8 ????????????????
Answers
Answer:
y = -14
Step-by-step explanation:
6 + y = -8
Subtract 6 from both sides to get y by itself.
y = -14.
Proof:
6 + y = -8
Substitute the variable.
6 + (-14) = -8
Add the negative/Subtract.
-8 = -8.
Answer:
y=−14
Step-by-step explanation:
Let's solve your equation step-by-step.
6+y=−8
Step 1: Simplify both sides of the equation.
y+6=−8
Step 2: Subtract 6 from both sides.
y+6−6=−8−6
y=−14
brainliest please?cuanto es 12.000 + 5.000
Answers
The answer is 17.000
The function H(t) = −16t2 + 75t + 25 shows the height H(t), in feet, of a baseball after t seconds. Part A: After how many seconds does the baseball hit the ground? You do not need to show your work. Part B: What is the maximum height of the baseball? You do not need to show your work.
Answers
Step-by-step explanation:
Given that,
The function that shows the height of a baseball after t seconds is given by :
[tex]H(t)=-16t^2+75t+25[/tex] ....(1)
Part (A).
When the baseball hits the ground,
H(t) = 0
So,
[tex]-16t^2+75t+25=0\\\\t=5\ s\ and\ t=-0.31\ s[/tex]
After 5 seconds the baseball will hit the ground.
Pat (B)
For maximum height, put dH/dt = 0
So,
[tex]\dfrac{d}{dt}(-16t^2+75t+25)=0\\\\-32t+75=0\\\\t=2.34\ s[/tex]
Put t = 2.34 s in equation (1).
[tex]H(t)=-16(2.34)^2+75(2.34)+25\\\\H(t)=112.89\ m[/tex]
Hence, this is the required solution.
The measure of an angle is 5. What is the measure of its complementary angle?
Answers
Answer:
85°
Step-by-step explanation:
90° - 5° = 85°
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
How do you find the unknown length for a special right angel
Answers
Answer: Pythagorean theroem
Step-by-step explanation:
The easiest method to use in terms of a missing side as long as you know at least two other variables whether its another side or angle
Lily is 90 cm tall. If Anika is 3/5 of the height of Lily, and Sadaf is 4/3 of the height of Anika, how tall is Sadaf?
Answers
WILL MARK BRAINLIEST!!! Plz help me with my math!
y varies directly with x. If y = -4 when x = 2, find y when x = -6.
Answers
Answer:
y = 12
Step-by-step explanation:
y = kx
-4 = k * 2
k = -4/2 = -2
y = -2x
y = -2 * (-6)
y = 12
HELP!!Which table represents a function?
х
O
3
5
9
х
0
3
lo
3
у
1 | 10 | 16 | 10
Y у
1
10 16 14
A
B В
Х
0
3
5
0
Х
5
3
5
9
у
1 | 10 | 16 | 11
у
1210 16 10
Answers
Answer:
a
Step-by-step explanation:
the answer is a because a function has no repeating x values.
''Table A'' represent the function.
What is mean by Function?A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).
Given that;
There are four relation are shown in figure.
Now, We know that;
A relation between a set of inputs having one output each is called a function.
In option A;
Every inputs have one output exactly.
As, 0 → 1
3 → 10
5 → 16
9 → 10
Hence, It is a function.
In option B;
Two outputs have same inputs.
Hence, It is not a function.
In option C;
Two outputs have same inputs.
Hence, It is not a function.
In option D;
Two outputs have same inputs.
Hence, It is not a function.
Thus, ''Table A'' represent the function.
Learn more about the function visit:
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If the gradient of the tangent to
[tex]y = \sqrt{x} [/tex]
is
[tex] \frac{1}{6} [/tex]
at point A, find the coordinates of A.
Answers
Answer:
Point A(9, 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 EqualityAlgebra I
Coordinates (x, y) Functions Function Notation Terms/Coefficients Anything to the 0th power is 1Exponential Rule [Rewrite]: [tex]\displaystyle b^{-m} = \frac{1}{b^m}[/tex] Exponential Rule [Root Rewrite]: [tex]\displaystyle \sqrt[n]{x} = x^{\frac{1}{n}}[/tex]Calculus
Derivatives
Derivative Notation
Derivative of a constant is 0
Basic Power Rule:
f(x) = cxⁿ f’(x) = c·nxⁿ⁻¹Derivative Rule [Chain Rule]: [tex]\displaystyle \frac{d}{dx}[f(g(x))] =f'(g(x)) \cdot g'(x)[/tex]
Step-by-step explanation:
Step 1: Define
Identify
[tex]\displaystyle y = \sqrt{x}[/tex]
[tex]\displaystyle y' = \frac{1}{6}[/tex]
Step 2: Differentiate
[Function] Rewrite [Exponential Rule - Root Rewrite]: [tex]\displaystyle y = x^{\frac{1}{2}}[/tex]Basic Power Rule: [tex]\displaystyle y' = \frac{1}{2}x^{\frac{1}{2} - 1}[/tex]Simplify: [tex]\displaystyle y' = \frac{1}{2}x^{-\frac{1}{2}}[/tex][Derivative] Rewrite [Exponential Rule - Rewrite]: [tex]\displaystyle y' = \frac{1}{2x^{\frac{1}{2}}}[/tex][Derivative] Rewrite [Exponential Rule - Root Rewrite]: [tex]\displaystyle y' = \frac{1}{2\sqrt{x}}[/tex]Step 3: Solve
Find coordinates of A.
x-coordinate
Substitute in y' [Derivative]: [tex]\displaystyle \frac{1}{6} = \frac{1}{2\sqrt{x}}[/tex][Multiplication Property of Equality] Multiply 2 on both sides: [tex]\displaystyle \frac{1}{3} = \frac{1}{\sqrt{x}}[/tex][Multiplication Property of Equality] Cross-multiply: [tex]\displaystyle \sqrt{x} = 3[/tex][Equality Property] Square both sides: [tex]\displaystyle x = 9[/tex]y-coordinate
Substitute in x [Function]: [tex]\displaystyle y = \sqrt{9}[/tex][√Radical] Evaluate: [tex]\displaystyle y = 3[/tex]∴ Coordinates of A is (9, 3).
Topic: AP Calculus AB/BC (Calculus I/II)
Unit: Derivatives
Book: College Calculus 10e