what is 13.6 - x = -64.2
Answer:
13.6 - x = -64.2
Step-by-step explanation:
x = 77.8
13.6 - 77.8 = -64.2 True!
Answer:
x=77.8
Step-by-step explanation:
13.6-x=-64.2
-13.6. -13.6
---------------------
since there is already -x it wouldn't be -77.8 bc that would cancel it out
HELP!
Ruben, Shelly, and Malcolm have recorded a hit song. Ruben gets 2/5 of the income, Shelly gets 1/3, and Malcolm gets the rest. If they earn $300,000, how much does Malcolm earn?
Answer:
$ 80,000
Step-by-step explanation:
2/5 + 1/3 = (6 + 5)/15 = 11/15
15/15 - 11/15 = 4/15
4/15 of 300,000
4/15 x 300,000 = 1,200,000/15 = 80,000
I’m so lost i have no idea how to get the function please see pic
You should first recognize the shape of the curve - it's an exponential function, so its equation takes the form [tex]y(x)=a\cdot b^{cx}[/tex] for some constants a, b, and c.
The curve lies above the x-axis, so a must be positive.
The curve is defined everywhere (there are no discontinuities), so b must be positive.
As you move left to right, the function is increasing, so c must also be positive. But to make things simpler, let's assume c = 1.
When x = 0, the curve passes through the point (0, 1). In our equation, we have
[tex]y(0) = a\cdot b^0 = a[/tex]
so it follows that a = 1.
When x = 1, the curve approximately passes through the point (1, 4); so
[tex]y(1) = b^1 = 4[/tex]
so b = 4.
Then the equation of the curve might be [tex]\boxed{y = 4^x}[/tex].
Find the derivative of f(x) =4cot(x) + 10 sin(x)
d/dx cot(x) = -csc²(x)
d/dx sin(x) = cos(x)
So, if f(x) = 4 cot(x) + 10 sin(x), then
f '(x) = -4 csc²(x) + 10 cos(x)
What is the correct number form for “seven and eighty-three thousandths?”
Answer:
7.083
Step-by-step explanation:
Answer:
7.083 im pretty sure
Step-by-step explanation:
2. The curve with equation y = ax? + bx +c passes through the points P (2,6) and Q (3, 16), and has a gradient of 7 at the point P. Find the values of the constants a, b, and c.
Answer:
[tex]y = a{x}^{2} + bx + c \\ 6 = a{2}^{2} + 2b + c \\ 6 = 4a+ 2b + c...(1) \\ 16 = 9a+ 3b + c...(2) \\ \frac{dy}{dx} = 7 = 4a + b...(3) \\ (2) - (1) \\ 10= 5a + b...(4) \\ (4) - (3) \\ 5a - 4a = 10 - 7 \\ \boxed{a = 3 }\\ sub \: a \: im \: (4) \\ 10 = 15 + b \\ \boxed{b = - 5} \\ sub \: a \: b \: in \: (1) \\ 6 = 4(3) + 2( - 5) + c \\\boxed{c = 4}[/tex]
Please help! I have 10 mins to do this! (-4.5 x 8.61 x (-2/9)
Or look at the picture! I will mark BRAINLIEST as well
Answer:
8.61
Step-by-step explanation:
Answer:
8.61 I think try that okay
need help due in 2 minutes!!!!!
Answer:
x = 7x^2
Step-by-step explanation:
4x-14=-3x^2
x-14=3x^2
x= 7x^2
Answer:
3x²+4x-14=0
Step-by-step explanation:
Standard form of a quadratic equation is ax²+bx+c=0. To do that, simply move -3x² over to the other side by adding it. That leaves you with the answer.
Please help with this question asap
What is the slope of this graph?
What is the area of a circle with a radius of 6 inches?
9 pi in^2
12 pi in^2
36 pi in^2
81 pi in^ 2
Answer:
Area of circle = πr² ( Putting π = 22/7) Area = 3.14×6×6Area = 113.04Step-by-step explanation:
If you like my answer than please mark me brainliest thanks
Please Help! I will give you a lot of points!
#1
(56,7) is the co-ordinate of point B.
#2
(56,7)
It means that the ball has travelled 56yards .it is at the height of 7ft.
Answer:
(56,7) is the answer of this questions
Select the action you would use to solve 3x = 12. Then select the property
that justifies that action.
Select all that apply.
O A. Action: Add 3 to both sides.
B. Action: Multiply both sides by 3.
O C. Action: Divide both sides by 3.
D. Property: Addition property of equality
O E. Property: Multiplication property of equality
F. Property: Division property of equality
Answer:
C. Action: Divide both sides by 3.
F. Property: Division property of equality
Step-by-step explanation:
you are trying to get x by itself so if you divide by 3 you are taking the 3 from x, and what you do to one side you do to the other.
Answer:
C. Action: Divide both sides by 3.
F. Property: Division property of equality.
Step-by-step explanation:
Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other.
First, divide 3 from both sides of the equation:
(3x)/3 = (12)/3
x = 12/3
x = 4
C. Action: Divide both sides by 3.
F. Property: Division property of equality.
~
If f(x)=4x2−2x+8, then calculate f(2 )
What is the answer?
Answer:
f(x)=4x2−2x+8,
or, f(2)=4*2*2-2*2+8
or,f(2)=16-4+8
or,f(2)=20....
f(2)=20
You just paid $435,000 for a policy that will pay you and your heirs $17,300 per year forever with the first payment in one year. What rate of return are you earning on this policy?
Answer:
3.98%
Step-by-step explanation:
R = $17,300/$435,000 = .0398, or 3.98%
FI h(x) = 3x + 8 , h(a) = 29 then what is the value of a?
Answer:
the value of a = 7..............
Answer:
[tex]h(x) = 3x + 8 \\ h(a) =3 a + 8 [/tex]
But, it is given that
[tex]h(a) = 29[/tex]
Therefore,
[tex]3a + 8 =29 \\ 3a = 29 - 8 \\ 3a = 21 \\ a = \frac{21}{3} \\ \boxed{ a = 7}[/tex]
Hence, the value of a is 7
a = 7 is the right answer.please help me pleaseeee!
1)true
2)true
3)false
4)true
5)true
6) false
7))true
8)true
9)false
10)false.
11)false
12)true
5. In (triangle) ABC, what is the expression for the length of BC? A sin 38/15 b.15sin 87/sin 38 c.15sin 55/sin 38. D, sin 87/15 sin 38
e. Sin 38/15 sin 87.
A
15 (55 triangle 38)
C
B
An insurer knows that the proportion of smokers in a population is 0.3. Furthermore, it is known that: 40% of applicants who are smokers say they do not smoke on their applications. None of the non-smoking applicants are lying on their application.
Calculate what is the probability that one of the applicants says that he does not smoke, and that in fact do not smoke.
===================================================
Explanation:
Let's say this population had 1000 people. You can pick any number you want, but I'm going for some nice big round number to work with.
The proportion of smokers is 0.3, which means 0.3*1000 = 300 people in this population are smokers and 1000-300 = 700 are nonsmokers.
Of the 300 people who do smoke, 40% of them lie on the application. This means 0.40*300 = 120 people lied. These 120 people say they don't smoke, but in fact they do smoke.
So if we were to survey this population, then 700+120 = 820 people would say they don't smoke
Only considering the people who write "don't smoke" on the survey, which is that 820 figure, 700 of them are true nonsmokers. Therefore, the probability we want is 700/820 = 0.8537 approximately
the first discount on a certain laptop was 15% the second was 28% after two discounts the price become $306. What was the original price?
Answer:
$437.58
Step-by-step explanation:
15% + 28%
= 43%
43/100 × 306
= $131.58
$131.58 + $306
= $437.58
What is the answer for this question?
Answer:
I don't know sorry.....
Find the area of right triangle def,round to nearest tenth if necessary D(-6,-1),E(1,-3),F(3,4)
HELP
Answer:
Step-by-step explanation:
Two of the legs will be at right angles to each other and have negative reciprocal slopes. Area will be half of the product of these two legs.
slope of DE (-3 - (-1)) / (1 - (-6)) = -2/7
slope of EF (4 - (-3)) / (3 - 1) = 7/2
so these two are perpendicular
check the DF line to be certain
slope of DF (4 - (-1)) / (3 - (-6)) = 5/9
Length of DE = √(-2² + 7²) = √53
Length of EF = √(7² + 2²) = √53
Area of triangle
A = ½√53√53 = 26.5 units²
Use the graph above to demonstrate your understanding of slope and density.
a. Calculate the slope of the trend line using this mathematical equation: Slope = Y2-Y1 / X2-X1
(Use the 2 yellow dots on the graph and show your work)
b. In this graph (mass vs volume), what does the slope represent?
Answer:
41
Step-by-step explanation:
i know skxkdkckxokdkakd
PLEASE HELP ITS MATH THANK YOUUUU
Answer:
2inch=1 foot
Step-by-step explanation:
so 2 to 1 2:1
Wxy is a right triangle.
Answer:
B. False
Step-by-step explanation:
To check if its a right angle triangle, you need to check if pythagoras' theorem works:
a² + b² = c²
(√17)² × (√17)² = 289 which is not equal to (√34)²
A vertical parabola goes through (-2,-18), (3, -13), and (5, -39). Use matrices to solve for D, E, and F,
given the general form x2 + y2 + Dx + Ey + F = 0 (since it is a vertical parabola there is not a
yż term).
The general formula for the parabola is [tex]x^{2}+y^{2}-21\cdot x +51\cdot y +548 = 0[/tex].
We need the knowledge of three distinct points to determine all coefficients of the vertical parabola based on the following general formula:
[tex]x^{2} + y^{2} + D\cdot x + E\cdot y + F = 0[/tex] (1)
If we know that [tex](x_{1}, y_{1}) = (-2, -18)[/tex], [tex](x_{2}, y_{2}) = (3,-13)[/tex] and [tex](x_{3}, y_{3}) = (5,-39)[/tex], then we have the following system of linear equations:
[tex]-2\cdot D -18\cdot E + F = -328[/tex] (2)
[tex]3\cdot D -13\cdot y + F = -178[/tex] (3)
[tex]5\cdot D -39\cdot E + F = -1546[/tex] (4)
The solution of the system of equations is: [tex]D = -21[/tex], [tex]E = 51[/tex], [tex]F = 548[/tex].
The general formula for the parabola is [tex]x^{2}+y^{2}-21\cdot x +51\cdot y +548 = 0[/tex].
We kindly invite to check this question on parabolae: https://brainly.com/question/4074088
Evaluate the expression when x=-6
Answer:
Step-by-step explanation:
x² + 5x - 5 = (-6)² + 5*(-6) - 5
= 36 - 30 - 5
= 36 - 35
= 1
Answer:
1
Step-by-step explanation:
-6^(2)+5(-6)-5
36 + 5(-6) -5
36- 30- 5
6 - 5
1
Simplify the linear expression.
−3x+5(−8x−1)
Enter your answer in the box.
Answer:
-43x - 5
Step-by-step explanation:
−3x + 5 (−8x −1)
First, distribute 5 into the parenthesis:
= −3x + 5 (−8x −1)
= -3x - 40x -5
Combine like terms:
= -43x - 5
Answer:
-43x - 5
Step-by-step explanation:
I took the K12 test
A math class has 4 girls and 1 boy in the seventh grade and 5 girls and 5 boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both boys?
Answer is 1/10
Answer:1/10
Step-by-step explanation:so easy
The probability that the students she selects are both boys is 1/10.
What is a probability? Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true.The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates impossibility of the event and 1 indicates complete certainty.Given is that a math class has 4 girls and 1 boy in the seventh grade and 5 girls and 5 boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition.
The probability that the students she selects are both boys -
P{E} = P{1} x P{2}
P{1} : randomly selecting a seventh grader as a boy.
P{2} : randomly selecting a eight grader as a boy.
We can write -
P{1} = n{f}/n{s} = 1/5
P{2} = n{f}/n{s} = 5/10 = 1/2
P{E} = P{1} x P{2}
P{E} = 1/5 x 1/2
P{E} = 1/10
Therefore, the probability that the students she selects are both boys is 1/10.
To solve more questions on functions, expressions and polynomials, visit the link below -
brainly.com/question/17421223
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What is the inverse of f(x) = 1/3x + 2 ?
A. h(x) = 1/3x + 2
B. h(x) = 1/3x - 2
C. h(x) = 3x - 2
D. h(x) = 3x - 6
Pls provide an explanation. I need help, and I will mark the person who helps me understand this Brainliest.
Answer:
D
Step-by-step explanation:
We are given the function:
[tex]\displaystyle f(x) = \frac{1}{3} x + 2[/tex]
And we want to find its inverse h.
To find the inverse of a function, we can switch the y and x variables and solve for the new y. This will be our inverse.
We begin with:
[tex]\displaystyle f(x) = y = \frac{1}{3} x+ 2[/tex]
Switching the variables yield:
[tex]\displaystyle x = \frac{1}{3}y + 2[/tex]
And solving for y yields that:
[tex]\displaystyle y = h(x) = 3x - 6[/tex]
In conclusion, the inverse function to f is 3x - 6. Our answer is D.
To understand why we switch the variables, recall that by the definition of inverse functions, if f(a) = b, then f⁻¹(b) = a. So, by switching the variables, we are essentially solving for f⁻¹(x).