Answer:
x=5
Step-by-step explanation:
Subtract 20
from both sides of the equation
2
Simplify
Subtract the numbers
Subtract the numbers
3
Subtract x
from both sides of the equation
Answer:
X = 5
Step-by-step explanation:
To solve for x, you need to get x to one side and everything else to the other side.
3x+20=x+30
Since there is only one positive x on the right, we can subtract it from both sides. This moves it over.
2x+20=30
Since there is a +20 on the same side we put our x, we need to subtract it from both sides to move it over.
2x = 10
Now x is being multiplied by 2. To get rid of it, we divide both sides by 2.
x = 5
Please help meeeeeeereerreee
Answer:
c
Step-by-step explanation:
Answer:
Checking account
Step-by-step explanation:
pls give me brainlest <3
The coffee shop is offering every 5th drink for 40% off. If my 9 friends and I each order a coffee that cost $4. 00 and we pay together, what will our total be?
write a pythogorean triplet whose smallest number is 20?
Answer:
20,21,29 or 20, 99 and 101.
Step-by-step explanation:
[tex]a^{2} +b^{2} =c^{2}[/tex]
[tex]20^{2} +21^{2} =29^{2}[/tex]
[tex]400+441=841[/tex]
OR:
[tex]a^{2} +b^{2} =c^{2}[/tex]
[tex]20^{2} + 99^{2} = 101^{2}[/tex]
[tex]400+9801=10201[/tex]
Please help! 20 points thanks :)
Answer:
[tex]\frac{3}{2}[/tex]
*View attached graph*
Step-by-step explanation:
Slope (m) formula: [tex]\frac{y_2-y_1}{x_2-x_1} =\frac{7-(-5)}{6-(-2)} =\frac{12}{8}=\frac{3}{2}[/tex]
y[tex]y=\frac{3}{2}x-2[/tex]
Hope this helps!
two number are in the ratio 5:8 if if there sum is 130 find the numbers
Answer:
50 and 80
Step-by-step explanation:
two numbers are in ratio 5;8 which is 5x + 8x
sum = 130
5x + 8x = 130
13x = 130 ( divide both sides by 13)
x = 10
to find the two numbers we multiply by x
5x = 5 x 10 = 50
8x = 8 x 10 = 80
I need help with my imagine math
Answer:
The answer is
Step-by-step explanation:
Similar : 2yd - 8yd, 6yd - 18yd
Not similar - Shape : 18yd - 6yd
Not similar - Ratio : 6yd - 3yd, 9yd - 18yd, 3yd - 1yd
An SRS of ten brands of breakfast cereals is tested for the number of calories per serving. The following data result: 185, 190, 195, 200, 205, 205, 210, 210, 225, 230. Find a 95% confidence interval estimate for the mean number of calories for servings of breakfast cereals.
Using the t-distribution, as we have the standard deviation for the sample, it is found that the 95% confidence interval estimate for the mean number of calories for servings of breakfast cereals is (195.3, 215.7).
What is a t-distribution confidence interval?The confidence interval is:
[tex]\overline{x} \pm t\frac{s}{\sqrt{n}}[/tex]
In which:
[tex]\overline{x}[/tex] is the sample mean.t is the critical value.n is the sample size.s is the standard deviation for the sample.From the sample and the significance level of 0.05, we have that the parameters are given by:
[tex]\overline{x} = 205.5, s = 14.2, n = 10, t = 2.2622[/tex]
Hence:
[tex]\overline{x} - t\frac{s}{\sqrt{n}} = 205.5 - 2.2622\frac{14.2}{\sqrt{10}} = 195.3[/tex]
[tex]\overline{x} + t\frac{s}{\sqrt{n}} = 205.5 + 2.2622\frac{14.2}{\sqrt{10}} = 215.7[/tex]
The 95% confidence interval estimate for the mean number of calories for servings of breakfast cereals is (195.3, 215.7).
More can be learned about the t-distribution at https://brainly.com/question/16162795
a video game sells for 79.99 it is marked down 30% what is the sale price on the video game
HEY, CAN SOMEONE PLEASE HELP WITH THIS QUESTION???
Answer:
five thousand one hundred and seventy nine
You can help me with any one of these equations I would really appreciate it but also please provide step-by-step explanation thank you I will choose Brainly
[tex][Hello,BrainlyUser][/tex]
Answer:
[5] [tex]2x^2+xy+-3y^2[/tex]
[6] [tex]2x^3+-7x^2+-3x[/tex]
[7] [tex]4a+2b[/tex]
[8] [tex]6x+2y-5[/tex]
[9] [tex]x^2-3xy-10y+75[/tex]
Step-by-step explanation:
Let's start with [5]
[tex]3x^2-2xy-2x^2-(x^2-3xy+y^2)[/tex]
Distribute the Negative Sign:
[tex]=3x^2-2xy-2y^2-1(x^2-3xy+y^2)[/tex]
[tex]=3x^2+-2xy+-2y^2+-1x^2+-1(-3xy)+-1y^2[/tex]
[tex]=3x^2+-2xy+-2y^2+-x^2+3xy+-y^2[/tex]
Combine like term
[tex]=3x^2+-2xy+-2y^2+-x^2+3xy+-y^2[/tex]
[tex]=(3x^2+-1x^2)+(-2xy+3xy)+(-2y^2+-y^2)[/tex]
[tex]=2x^2+xy+-3y^2[/tex]
Answer = [tex]2x^2+xy+-3y^2[/tex]
-------------------------------------------------------------------------------------------------------------
[6] [tex]\left(2x^3-5x^2-3x\right)-2x^2[/tex]
Combine like terms
[tex]\left(2x^3-5x^2-3x\right)-2x^2[/tex]
[tex]=(2x^2)+(-5x^2+-2x^2)+(-3x)[/tex]
[tex]=2x^3+-7x^2+-3x[/tex]
Answer = [tex]2x^3+-7x^2+-3x[/tex]
------------------------------------------------------------------------------------------------------------- [7] [tex]4a-(3a-2b)+3a[/tex]
[tex]=4a+-3a+2b+3a[/tex]
Combine like terms:
[tex]=(4a+-3a+3a)+(2b)[/tex]
[tex]=4a+2b[/tex]
Answer = [tex]4a+2b[/tex]
-------------------------------------------------------------------------------------------------------------
[8] [tex]\left[3x-\left[x-4x+2y\right)+4y\right]-5[/tex]
[tex]3x-(-3x-2y+4y)-5[/tex]
[tex]=3x-(-3x+2y)-5[/tex]
[tex]=3x+3x-2y-5[/tex]
[tex]=6x-2y-5[/tex]
Answer = [tex]6x-2y-5[/tex]
-------------------------------------------------------------------------------------------------------------
[9] [tex]x^2-3xy+5\left\{2+\left[y-3\left(y-6\right)-5\right]\right\}[/tex]
Combine likes terms
[tex]x^2-3xy-10y+75[/tex]
Answer = [tex]x^2-3xy-10y+75[/tex]
[CloudBreeze]
what precent is 50% of 150% of x?
Answer:
75% of x
Step-by-step explanation:
Answer:
75%x (or 0.75x)
Step-by-step explanation:
We can convert the percentages to decimal format and then multiply.
50% = 0.50
150% = 1.50
"50% of 150% of x" can be written as:
(0.50)(1.50)x
= 0.75x
50% of 150% of x is 75%x
A tourist exchanges US$1500 in St Lucia for Eastern Caribbean currency. Given that US$1.00 = EC$2.7169 and that the total bank charges amounted to EC$10.80, calculate the amount in EC currency that the tourist received from the transaction.
what is photo tha photo aunties
Work out m and c for the line: 2 x + 3 y + 1 = 0
Answer:
Step-by-step explanation:
Write in y = mx +c form
2x + 3y + 1 = 0
3y = -2x - 1
Divide the entire equation by 3
[tex]y =\dfrac{-2}{3}x-\dfrac{1}{3}[/tex]
[tex]m = \dfrac{-2}{3}\\\\\\c=\dfrac{-1}{3}[/tex]
solve the inequallity for x
-3x + 6 > 48
Answer: x<-21
Step-by-step explanation: I worked on the problem and checked online. Your good! Hope this helps! ^w^
Which section of the function is constant?
A graph is shown. Segment A begins at the origin and continues upward. Segment B continues upward at a faster rate. Segment C is a horizontal line. Segment D continues upward
Group of answer choices
C
B
A
D
Answer:
Segment C
Step-by-step explanation:
constants have no slopes and are therefore straight, horizontal lines
What is the x-intercept? 2x + 3y = 12
0 (0,6)
O (6.0)
0 (0.4)
O (4,0)
If the volume of a cube is 1331cm3 what is the lengh of it's side?
Pls help! I'm Stuck.
Answer:
11 cm
formulae:
volume of cube: a³ [ where a is side length ]
solve:
side³ = volume
a³ = 1331
a = ³√1331
a = 11
Answer:
11 cm
Step-by-step explanation:
the volume (V) of a cube is calculated as
V = s³ ( s is the side length )
given V = 1331 cm³ , then
s³ = 1331 ( take cube root of both sides )
s = [tex]\sqrt[3]{1331}[/tex] = 11
What is the rule of (2,5) (3,6) (4,7) (5,?)
Answer:
5,8
Step-by-step explanation:
Because each number goes up by one and has a pattern
Which statement best describes the association between variable X and variable Y?
moderate positive association
perfect positive association
moderate negative association
perfect negative association
The statement that best describes the association between variable X and Y is perfect positive association.
What is a perfect positive association?
This is a term that is used in statistics to refer to the fact that a 100 percent of the time, the variables X and Y are moving together in the same direction and in the same exact direction.
From the image here, the Variables X and Y have a straight line relationship showing that they are moving together.
Read more on variables here: https://brainly.com/question/23931018
A perfectly positive correlation means that 100% of the time, the variables in question move together by the exact same percentage and direction
2. Evaluate the given function by using synthetic division:
f(x)= 24 + 3x3 + x2 + 2x – 3 at x = -2.
Answer:
53
Step-by-step explanation:
f(x)= 3x^3+x^2+2x-21
X=-2
2 3 1 2. 21
bring the 3 down
2x3=6
6+1=7
7x2=14
14+2=16
16x2=32
32+21=53
Therefore, you have a remainder of 53
The population of bats in a large cave is 4800 and is growing exponentially at 16%
per year. Write a function to represent the population of bats after t years, where the
quarterly rate of change can be found from a constant in the function. Round all
coefficients in the function to four decimal places. Also, determine the percentage
rate of change per quarter, to the nearest hundredth of a percent.
Answer:
f(t)=4800(1.0378)^4t
3.78%
Step-by-step explanation:
f(t)=
f(t)=a(1+r)^t
f(t)=4800(1+0.16)^t
f(t)=4800(1.16)^t
What is the slope of the line that passes through the points(1,−6) and(−2,−8)? Write your answer in simplest form.
[tex](\stackrel{x_1}{1}~,~\stackrel{y_1}{-6})\qquad (\stackrel{x_2}{-2}~,~\stackrel{y_2}{-8}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-8}-\stackrel{y1}{(-6)}}}{\underset{run} {\underset{x_2}{-2}-\underset{x_1}{1}}}\implies \cfrac{-8+6}{-3}\implies \cfrac{-2}{-3}\cfrac{2}{3}[/tex]
[tex]\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-6)}=\stackrel{m}{\cfrac{2}{3}}(x-\stackrel{x_1}{1})\implies y+6=\cfrac{2}{3}x-\cfrac{2}{3}[/tex]
hmmm now let's put that in standard form, that is
standard form for a linear equation means
• all coefficients must be integers, no fractions
• only the constant on the right-hand-side
• all variables on the left-hand-side, sorted
• "x" must not have a negative coefficient
[tex]\stackrel{\textit{multiplying both sides by }\stackrel{LCD}{3}}{3(y+6)~~ = ~~3\left( \cfrac{2}{3}x-\cfrac{2}{3} \right)}\implies 3y+18~~ = ~~2x-2 \\\\\\ 3y=2x-20\implies -2x+3y=-20\implies 2x-3y=20[/tex]
What is 4 to the 10 power?
Answer
40
Step-by-step explanation:
Because this saying to the tenth power is representing that 4 timesing it self by 10 so if 40 is answer then do that because 4 x 10=40
4 x 1=4
4 x 2=8
4 x 3=12
4 x 4=16
4 x 5=20
4 x 6=24
4 x 7=28
4 x 8=32
4 x 9=36
4 x 10=40 See there you go have a great day hope this helps:)
what is the domain and range?
f(x) = 2x^3 – 2
hope this answer helps
Can u mark this as brainliest
Paul wants to play quarterback, but that decision depends on who coaches for a given game. Coach Smith is coach 60 percent of the time, and Coach Brown is coach the other 40 percent. Coach Brown has faith in Paul, so he starts him at quarterback in 80 percent of the games he coaches. Coach Smith, though, isn't so sure, so he starts Paul at quarterback 40 percent of the time. What's the probability of Paul starting as quarterback for the next game?
Answer:
56/100
Sorry, I looked this up so someone else might need to show you the work.
But I got the answer
The probability that a student guesses the correct answer to a four-choice multiple choice question is P(correct) = 0.25 How many correct answers should a student expect to guess on a test with 58 four choice multiple choice questions?
Answer:
14.5
Step-by-step explanation:
pls brainliest
Write an equation to represent the total number of legs on h horses and c chickens if a farmer counts 186 legs between two types of animals.
Answer:
4h + 2c = 186 legs
Step-by-step explanation:
h is the number horses and c is the number of chickens.
We know that 1 horse = 4 legs.
And 1 chicjen = 2 legs
We can write these as:
1H = 4 legs
1C = 2 legs
We are told that a farmer counts 186 legs. That must be represented by the equations:
4h + 2c = 186 legs
How to solve (4x^2 + 20x + 6)/ (2x+8)
Answer:
2x2+10x+3/x+4
Step-by-step explanation:
4x2+20x+6 / 2x+8 = 4x2+20x+6/2x+8
Please help in answering these. The are five correct choices!
Answer:
True: B, C, D, F, G
False: A, E
Step-by-step explanation:
The false statements are false because we don't know anything about the measures of the sides of the red and blue triangles.
We do know that EF which is vector v is the hypotenuse of a 3-4-5 triangle, And that triangle ABC and triangle A'B'C' are exactly the same shape and size. And that one slid (translation) down at the exact angle and direction of vector v...so all the points, parts, sides, pieces of the triangle slid down in the same angle and direction.
6. Write the standard form of the line: y=2/5x-7
The standard form for a linear equation is: ax + by + c = 0
Once we move all the variables and constants to one side, we get the standard form for a linear equation
[tex]y = \frac{2}{5} x - 7\\y -\frac{2}{5}x = -7\\ y - \frac{2}{5}x + 7 = 0\\[/tex]
Hope that helps!
