Answer:
20720
Step-by-step explanation:
-3x^2y +4x
-3(-4)^2*2 + 4(-4)
= 12^4 -16
20736 - 16
= 20720
I hope this helped!
Answer:
When x = -4 and y = 2, -3x^(2y) + 4x is -784.
Step-by-step explanation:
-3x^(2y) + 4x
Substitute given variables.
-3(-4)^(2(2)) + 4(-4)
Multiply 2 and 2.
-3(-4)^4 + 4(-4)
Multiply -3 and -4.
Raise -4 to the 4th power.
-3(256) + 4(-4)
Multiply -3 and 256.
-768 + 4(-4)
Multiply 4 and -4
-768 + (-16)
Add -768 and -16.
-784
What is the IQR for 79 85 98 125 140
Hi there!
We have the numbers:
79 85 98 125 140
From the data, we can see that '98' is the median value as it is exactly in the middle. We can then split the data into equal groups on both sides of the median.
79 85
125 140
Since there are only two numbers, we can find the median of EACH sub-group (Q1 and Q3 respectively) by taking the average.
Q1 = (79 + 85)/2 = 82
Q3 = (140 + 125)/2 = 132.5
The IQR is simply the difference between Q3 and Q1, so:
IQR = 132.5 - 82 = 50.5
For the 50 students in an art contest, there will be 1 prize for first-place, 1 prize for second-place, and 3 prizes for honorable mention. What is the probability of winning a prize?
Step-by-step explanation:
there are 50 students and 5 prizes (1 + 1 + 3).
so, already in natural language we would say "there is 1 prize for every 10 students".
formally, remember the rule of probability : desired outcomes over total possible outcomes.
this is here
5/50 = 1/10 = 0.1
your can see it also this way :
if there was only 1 prize, each student would have a chance of 1/50 of winning.
now there are 5 prizes, which gives everybody 5 times the chance of winning. which is then 5×1/50 = 5/50 = 0.1
You work with 3 other students on a project for science class. Your group
zarns 329 points, or 94%, of the total possible points. How many points are
possible for the project?
Answer:
350 points are possible
Step-by-step explanation:
You take 329 divided by 94% or .94 to get 350.
100% of 350 is 350
To double check, 94% of 350 is 329 & 6% of 350 is 21. 329 +21 = 350
Please help me with this too ,
Answer:
Step-by-step explanation:
[tex]\sf a^{m}*a^{n} =a^{m +n}\\\\a^{\frac{1}{n}}=\sqrt[n]{a}[/tex]
[tex]\sf a^{-n}=\dfrac{1}{a^{n}}\\\\\dfrac{a^{n}}{a^{m}}=a^{n-m}\\\\\\a^{0}=1[/tex]
[tex]\sf (a^{n})^{m} = a^{n*m}\\\\(a^{n}*b^{m})^{p}=a^{np}b^{mp}\\\\(ab)^{n}=a^{n}b^{n}[/tex]
solve for x: x^3 + x^2 + x = 3
Math test Farley easy
Answer:
417.831823 [tex]in^{2}[/tex]
Step-by-step explanation:
surface area of cone ;
[tex]=\pi r^{2}+\pi rl\\ =\pi (7^{2}) +\pi (7)(12)=417.831823 in^{2}[/tex]
Answer:417.831823
Step-by-step explanation:
56783÷100=
please give answer pl
Select all ratios equivalent to 7:2.
14:4
28:8
9:1
Answer:
Step-by-step explanation:
If you multiply top and bottom of 7/2 by 2 as in (7 *2) / (2 * 2) = 14 /4
If you multiply 7/2 top and bottom by 4, you get 28/8
So 14/4 and 28/8 are both the same as 7/2
The vertex -x^2 - 2x + 8
General form of a quadratic equation: [tex]ax^2+bx+c[/tex]
⇒ since the equation: [tex]-x^2-2x+8[/tex]
⇒ so:
a = -1b = -2c = 8To calculate the x-coordinate of the vertex
⇒use x = [tex]-\frac{b}{2a}[/tex] <--- this is a property that helps you find the vertex of the
quadratic
x = [tex]-\frac{(-2)}{2*(-1)} =-1[/tex]
Since x = -1:
⇒ we can plug in this x-value into the original equation to find the y-
value
[tex]y =-(-1)^2-2(-1)+8=-1+2+8=9[/tex]
So the coordinate of the vertex: (-1,9)
Hope that helps!
Tickets to games of a local basketball team cost $12 for students and $16 for adults. For one game, $3700 was collected and 250 tickets were sold. How many of each kind of ticket were sold? Write and solve a system of equations.
Answer:
12x + 16y = 3700
x + y = 250
x = 75 students
y = 175 adults
Step-by-step explanation:
y = 250 - x
12x + 16(250-x) = 3700
12x + 4000 - 16x = 3700
-4x = -300
x = 75
y = 250 - 75
y = 175
1=5-4+3-2-1 pls help me i need to turn this and
Answer:
The answer would be true
Step-by-step explanation:
[tex]1=5-4+3-2-1[/tex]
[tex]1=1+1-1[/tex]
[tex]1=2-1[/tex]
[tex]1=1[/tex]
C
7
24
What is the measure of C
Let x1 = 36, y1 = −6, and y2 = 8, and let y vary inversely as x. Find x2.
Answer:
-30
Step-by-step explanation:
Using 'y' is vary inversely to 'x', the value of x₂ = -27.
What is inverse?The word inverse in mathematics "a function or operation which reverses the order or operation of another function or operation".
According to the question,
x₁ = 36, y₁ = -6, y₂ = 8 and x₁ is inversely proportional to y₁ which mean
(x₁) (y₁) = k
(36)(-6) = -216.
Formula for inverse is x = k([tex]\frac{1}{y}[/tex]).
In order to find x₂, x₂ = -216(1/8)
x₂ = -27
Hence, the value of x₂ = -27.
Learn more about inverse proportional here
https://brainly.com/question/20026843
#SPJ2
NO LINKS!! Please help me with this problem
#GH
[tex]\\ \rm\Rrightarrow \dfrac{GH}{FG}=\dfrac{TS}{TU}[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{GH}{36}=\dfrac{42}{28}=\dfrac{3}{2}[/tex]
[tex]\\ \rm\Rrightarrow GH=108/2=54[/tex]
#UV
[tex]\\ \rm\Rrightarrow \dfrac{UV}{TU}=\dfrac{JF}{FG}[/tex]
[tex]\\ \rm\Rrightarrow\dfrac{ UV}{28}=\dfrac{63}{36}=\dfrac{21}{12}=\dfrac{7}{4}[/tex]
[tex]\\ \rm\Rrightarrow UV=7(28)/4=7(7)=49[/tex]
#VW
[tex]\\ \rm\Rrightarrow \dfrac{VW}{SW}=\dfrac{IJ}{IH}[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{VW}{35}=\dfrac{27}{45}=\dfrac{3}{5}[/tex]
[tex]\\ \rm\Rrightarrow VW=3(35)/5=3(7)=21[/tex]
FGHIJ ≅ UTSWV
making proportional equations
GH/FG = TS/UTGH/36 = 42/28GH = 54FJ/FG = UV/UT63/36 = UV/28UV = 49IJ/FG = VW/UT27/36 = VW/28VW = 211/3(6x-3)-1/4(20x+8)=-6
Answer:
x = 1.
Step-by-step explanation:
[tex]\frac{1}{3}(6x-3)-\frac{1}{4}(20x+8)=-6\\\\[Distribute the first fraction into the parenthesis.]\\((\frac{1}{3}*6x)-(\frac{1}{3}*3))-\frac{1}{4}(20x+8)=-6\\\\2x-1-\frac{1}{4}(20x+8)=-6\\\\[Distribute the second fraction into the parenthesis.]\\2x-1-((\frac{1}{4}*20x)+(\frac{1}{4}*8))=-6\\\\2x-1-5x-2=-6\\\\[Combine like terms.]\\-3x-3=-6\\\\[Add 3 to both sides.]\\-3x=-3\\\\[Divide both sides by -3.]\\x=1[/tex]
Write 0.000299 in scientific notation
Answer:
0.000299 in scientific notation
2.99 × 10-4
Step-by-step explanation:
To convert 0.000299 into scientific notation also known as standard form, follow these steps:
Move the decimal 4 times to right in the number so that the resulting number, m = 2.99, is greater than or equal to 1 but less than 10
Since we moved the decimal to the right the exponent n is negative
n = -4
Write in the scientific notation form, m × 10n
= 2.99 × 10-4
Answer:
0.000299
2.99 × 10^-4.
Step-by-step explanation:
Angle 1 and angle 2 are supplementary. Angle 2 is 2 times the measurement of angle 1. What is the measurement of the larger angle?
Answer: 120 degrees
Step-by-step explanation:
For Halloween, Gwen received 4*10 pounds of candy in the first hour and another 43/5 pounds the second hour. How much
candy did she get total?
Answer:
4*10 = 40
43/5 = 8.6
40 + 8.6 = 48.6 candy in total.
Which expression equals a number that is NOT a rational number?
Please help asap
A naval engineer uses the function, P, to analyze the effects of water pressure on submarines. The
function P(d) measures the pressure exerted by water, where d represents the depth of water in
meters. Which of the following would be a possible domain?
A
d is the set of all integers.
B
d is the set of all integers where d > 0.
d is the set of all rational numbers.
D
d is the set of all rational numbers where 0 sds depth of sea floor).
994
Answer:
the correct answer is D.
Step-by-step explanation:
d is the set of all rational numbers where (0 ≤ d ≤ depth of seafloor).
i just took the test on math nation and got it correct.
hope this helped! :)
What is the following product?
30 10
O 2010
O 3 V10
4./10
o 10/3
What is the following product?
Square root 30 and square root 10
Answer:
10 sqrt 3
Step-by-step explanation:
sqrt (30) * sqrt (10) = sqrt (300) = sqrt ( 4 * 25 * 3) = 10 sqrt 3
Find the surface area
Answer:
Area of a sphere
Radius
15 m
Diameter
30 m
Volume
14,137 m³
Surface to volume ratio
0.2 1/m
Surface area
2,827.4 m²
Step-by-step explanation:
Help help help math math math
4x + 8 > -x - 7
4x + x > - 7 - 8
5 x > - 15
x > -3
x > -3
↪explanation4x + 8 > -x - 7
4x + x > -7 - 8
5x > -15
5x ÷ 5 > -15 ÷ 5
x > -3
☆...hope this helps...☆
You have two part-time jobs making $11 an hour mowing lawns and $8 an hour washing cars. You want to make at least $150 a week but work less than 20 hours per week. Write a system to represent this situation..
What is the volume of this figure? Enter your answer in the box.b
Answer:
2800 ft³
Step-by-step explanation:
The required volume of given figure is 2800 ft³
I hope it helped you
Pls help me with this
1. Which drink is the most preferred by your classmates?
2. Which drink is the least preferred by your classmates?
3. Compare the percentage of students who prefer juice and coffee.
4. Compare the percentage of students who prefer water and tea.
5. Compare the percentage of students who prefer chocolate drink and other drink.
Answer:
1. Choclate Drink
2. Coffee
3. 19 % difference
4. 1 % difference
5. 42% difference
Step-by-step explanation:
What is 2/3 - 5/6 divided by 3/4
someone pls help me i will give brainliest to the first to answer
Answer:
21 and 35
Step-by-step explanation:
21 for the first box, when it is in parenthesis you multiply each, so then 35 for the second box
7 times 3 then 7 times 5
add the following integers {3 +(-7)}+(-6)
Answer:
-10
Step-by-step explanation:
Answer:
-10
Step-by-step explanation:
(3+(-7))+(-6)
=3-7+-6
=3-7-6=-10
Find the particular solution of the differential equation that satisfies the initial condition f'(x) 4x, f(0) = 5 f(x) =
Answer: [tex]f(x)=2x^2+5[/tex]
Step-by-step explanation:
First integrate f'(x) so we can find the funtion f(x):
[tex]4\int\limits {x} \, dx =4[\frac{1}{2} x^2]=2x^2+C=f(x)[/tex]
The initial conditions say that when x = 0, the function equals 5. Let's write that down:
[tex]f(0)=5=2(0^2)+C=C[/tex]
Therefore, the integration constant 'C' must equal 5. This means that our function is:
[tex]f(x)=2x^2+5[/tex]