Answer:
24c+37
Step-by-step explanation:
Fifty less than three times a number is -20. Find the number.
Answer:
10
Step-by-step explanation:
assigning variable x to the unknow number
3x - 50 = -20
3x = 30
x = 10
Solve the equation -4/x - 1 = 7/2 - x + 3/x + 1
Answer:
x=6.566084 or x=−1.066084
Step-by-step explanation:
Let's solve your equation step-by-step.
−4
x
−1=
7
2
−x+
3
x
+1
−4
x
+−1=
7
2
+−x+
3
x
+1
Multiply all terms by x and cancel:
−4+−1x=
7x
2
+(−x)(x)+3+1x
−x−4=−x2+
9
2
x+3(Simplify both sides of the equation)
−x−4−(−x2+
9
2
x+3)=−x2+
9
2
x+3−(−x2+
9
2
x+3)(Subtract -x^2+9/2x+3 from both sides)
x2+
−11
2
x−7=0
For this equation: a=1, b=-5.5, c=-7
1x2+−5.5x+−7=0
x=
−b±√b2−4ac
2a
(Use quadratic formula with a=1, b=-5.5, c=-7)
x=
−(−5.5)±√(−5.5)2−4(1)(−7)
2(1)
x=
5.5±√58.25
2
x=6.566084380618436,−1.0660843806184368
Check answers. (Plug them in to make sure they work.)
x=6.566084(Works in original equation)
x=−1.066084(Works in original equation)
Answer:
x=6.566084 or x=−1.066084
-5x + y = -3 and –x - 5y = - 11 by substitution
Answer:
x = 1, y = 2
Step-by-step explanation:
-5x + y = -3, we get y = 5x - 3.
Then plugs into the second equation, we get
-x - 5 (5x-3) = -11.
-x - 25x + 15 = -11,
-26x = -26
x = 1,
plugs x = 1 to y = 5x - 3, we get y = 2.
Answer:
Required Answer:--5x+y=-3---------------(1)-x-5y=-11----------------(2)From eq (1)
[tex]{:}\longrightarrow[/tex][tex]\sf -5x+y=-3 [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf y=-3+5x [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf y=5x-3\dots\dots (3) [/tex]
Substitute the value in eq (2)[tex]{:}\longrightarrow[/tex][tex]\sf -x-5 (5x-3)=-11 [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf -x-25x+15=-11 [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf -26x=-11-15 [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf -26x=-26 [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf x={\dfrac {-26}{-26}}[/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf x=1[/tex]
Substitute the value in eq (3)[tex]{:}\longrightarrow[/tex][tex]\sf y=5x-3 [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf y =5 (1)-3 [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf y=5-3 [/tex]
[tex]{:}\longrightarrow[/tex][tex]\sf y=2 [/tex]
[tex]\therefore[/tex](x,y)=(1,2)
I dont understand how to explain this.
Answer:
Angle F is 50° because their side lengths are different but the angle measurements did not change. All triangles add up to 180 degrees and a right angle is 90 and it gives you the other angle measurement. So you would do 40 plus 90 which would get you 130. To find the last angle you would do 180 minus 130 which is 50. Angle F is 50 degrees.
Step-by-step explanation:
this is what i would say
Sofia measured a line to be 8.9 inches long. If the actual length of the line is 8.7 inches, then what was the percent error of the measurement, to the nearest tenth of a percent?
Answer:
2.2%
Step-by-step explanation:
Use the percent error formula:
% error = | (approx - exact) ÷ approx | x 100
Plug in the approx. and exact values:
| (8.9 - 8.7) ÷ 8.9 | x 100
| (0.2) ÷ 8.9 | x 100
= 2.2
So, the percent error is 2.2%
Answer:1.2%
Step-by-step explanation:
∣experimental−actual∣
×100
The formula
∣
8.7
−
8.6
∣
8.6
×
100
8.6
∣8.7−8.6∣
×100
Plug in values
∣
0.1
∣
8.6
×
100
8.6
∣0.1∣
×100
Subtract
0.1
8.6
×
100
8.6
0.1
×100
Take the absolute value
0.0116279
×
100
0.0116279×100
Divide
1.16279
1.16279
Multiply by 100
1.2
%
1.2%
Given the points A(-l , 2) an d B(7, 14), find the coordinates of the point P on directed line segment AB that partitions AB in the ratio 1:3
Answer:
ethiopia
Step-by-step explanation:ethiopia ethiopia ethipoia
Calculate the value for each determinant:
Calculate the value for each determinant:
Can any of you help out!!!?
Answer:
Step-by-step explanation:
[tex]\begin{vmatrix}3 & -1\\ -3 & 4\end{vmatrix}=(3\times 4)-(-1)\times (-3)[/tex]
= 12 - 3
= 9
[tex]\begin{vmatrix}8 & -1\\ -4 & -1\end{vmatrix}=8\times(-1)-(-1)\times(-4)[/tex]
= -8 - 4
= -12
[tex]\begin{vmatrix}-12 & -1\\ 12 & 5\end{vmatrix}=(-12)\times(5)-(-1)\times(12)[/tex]
= -60 + 12
= -48
[tex]\begin{vmatrix}2 & -1\\ 2 & -1\end{vmatrix}=2\times(-1)-(2)\times(-1)[/tex]
= -2 + 2
= 0
[tex]\begin{vmatrix}0 & -1\\ 17 & 4\end{vmatrix}=0\times(4)-(-1)\times(17)[/tex]
= 17
[tex]\begin{vmatrix}1 & 0\\ 0 & 1\end{vmatrix}=1\times(1)-(0)\times(0)[/tex]
= 1
Answer:
credit to top guy
this is for visual help
Step-by-step explanation:
Use long division to find the quotient below.
(15x2 + 2x2 - 75) - (3x-5)
O A. 5x2 - 9x + 15
B. 5x2 + 9x + 15
C. 5x2 + 12x + 15
D. 5x2 - 12x + 15
Holly's checking account has a dollar balance. Emily's checking account has a dollar balance. Which of the following is true about their account balances?
A.
Holly's account balance > Emily's account balance
B.
Holly's account balance < Emily's account balance
C.
Holly's account balance = Emily's account balance
Answer:
C
Step-by-step explanation:
Both Holly and Emily have the same account balance thus it is equal to
Answer:
Dont listen to the person its actually B
Step-by-step explanation:
On a number line, smaller numbers are to the left of larger numbers.
Negative values are always less than positive values.
So, the following is true.
Holly's account balance < Emily's account balance
if a cylinder has a volume of 99 cubic centimeters , what is the volume of a cone with the same dimensions
Answer:
900
Step-by-step explanation:
Which of the inequalities matches the graph below?
Graph of an inequality with shading above the line passing through points (-6,4) and (0,2)
LaTeX: y\ge-3x+2
y
≥
−
3
x
+
2
y
≥
−
3
x
+
2
LaTeX: y\ge-\frac{1}{3}x+2
y
≥
−
1
3
x
+
2
y
≥
−
1
3
x
+
2
LaTeX: y\le-3x+2
y
≤
−
3
x
+
2
y
≤
−
3
x
+
2
LaTeX: y\le-\frac{1}{3}x+2
Answer:
y≤-1/3x+2 is the correct answer
Step-by-step explanation:
Multiply. Answer with a mixed number in simplest form.
5 x 2 1/4
Answer:
The correct answer should be 11[tex]\frac{1\\}{4}[/tex]
Step-by-step explanation:
Let me know if this is wrong and I will correct it if it is.
A study conducted by the Center for Disease Control that asked 15,000 students about
their sleep habits showed that about 73% of high school students did not get the
required 8 hours of sleep per night. Let p be the proportion of high school students who
do not get 8 hours of sleep daily.
What is the sampling distribution of p?
Answer:
The sampling distribution of [tex]\hat p[/tex] is: [tex]\hat p\sim N(p,\ \frac{p(1-p)}{n})[/tex].
Step-by-step explanation:
According to the Central limit theorem, if from an unknown population large samples of sizes n > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.
The mean of this sampling distribution of sample proportion is:
[tex]\mu_{\hat p}=p[/tex]
The standard deviation of this sampling distribution of sample proportion is:
[tex]\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}[/tex]
The study was conducted using the data from 15,000 students.
Since the sample size is so large, i.e. n = 15000 > 30, the central limit theorem is applicable to approximate the sampling distribution of sample proportions.
So, the sampling distribution of [tex]\hat p[/tex] is: [tex]\hat p\sim N(p,\ \frac{p(1-p)}{n})[/tex].
Plot four lines. Each line should pass through the point
on the y-axis and one of the other four points. One is
done for you.
Line
Equation
#1
y = -2+
#2
8
#3
-8
Check My Work
Answer: y= 3/4x +3
X/-4 + Y/3 = 1
Y-6=3/4 (x-4)
3x-4y=-12
Step-by-step explanation:
Just did it cus im cool
The required equation of the lines are y = 5/3x , y = -3/4x and y = -4x which passes through y axis and points (-3, -5) , (-4, 3) and (1, -4) respectively.
Given that,
To plot four lines. Each line should pass through the point on the y-axis and one of the other four points.
A line can be defined by the shortest distance between two points is called a line. The standard equation of the line is y = mx +c where c = intercept and m, = slope of the equation.
Here, (-3, -5) , (-4, 3) and (1, -4)
Three lines are to be plotted on the curve which passes through (-3, -5) , (-4, 3), and (1, -4) and at any point on the y-axis,
So the equation are,
y = 5/3x passes through (-3, -5 ) and 0 on y axis
y = -3/4x passes through (-4, 3) and 0 on y axis
y = -4x passes through (1, -4 ) and 0 on y axis
Thus, the required equation of the lines are y = 5/3x , y = -3/4x and y = -4x which passes through y axis and points (-3, -5) , (-4, 3) and (1, -4) respectively.
Learn more about lines here:
brainly.com/question/2696693
#SPJ5
TRUE OR FALSE? PLS HELP ME! ILL GIVE BRAINLIEST!!
Answer:
True!
From: Mr. Otero
Which method can be used to find the range of a set of data? Find the difference between the maximum and minimum values. Find the difference between the upper and lower quartiles. Find the median of the upper half of an ordered data set. Find the sum of the maximum and minimum values.
Using the range concept, it is found that the method used to find it is:
Find the difference between the maximum and minimum values.
What is the range of a data-set?The range of a data-set is given by the difference between the maximum value in the data-set and the minimum value in the data-set.
Hence, the correct option about the method used to find the range is:
Find the difference between the maximum and minimum values.
You can learn more about the range of a data-set at https://brainly.com/question/24732674
Answer:
(B) Find the difference between the upper and lower quartiles.
The measures of the angles of a triangle are shown in the figure below
Answer:
they very much are there
Step-by-step explanation:
Answer:
37.5 degrees
Step-by-step explanation:
All triangle angles must sum up to 180 degrees
63 + 90 = 153
153 = 4x + 3
150 = 4x
37.5 = x
What is 2373.84 rounded to the nearest hundredth
Answer:
2400 ( if it the HundredTHS place Then it will just be 2373.84 because there is no thousandths place :P )
Step-by-step explanation:
y-3= 5(x - 2)
NEED HELP
Answer:
Y = 5x -7
Step-by-step explanation:
That is written in slope intercept form, which I'm assuming is what you need. If not comment on my answer.
Answer:
y = 5x - 7
Step-by-step explanation:
y-3= 5(x-2)
y-3 = 5x - 10
y=5x -7
This is the answer if you have anymore questions please ask
Olivia is going to an amusement park. The price of admission into the park is $40, and once she is inside the park, she will have to pay $4 for every ride she rides on. How much money would Olivia have to pay in total if she goes on 13 rides? How much would she have to pay if she goes on r rides?
There are 14 boys and 35 girls on a class. What is the ratio of boys to girls in the class?
Answer:
14:35
Step-by-step explanation:
Answer:
14:49 boys 35:49 girls
Step-by-step explanation:
35+14=49
Consider the system of inequalities and its graph.
y ≥
y ≤ x – 3
On a coordinate plane, 2 solid straight lines are shown. The first line has a positive slope and goes through (negative 8, negative 2) and (0, 0). Everything above the line is shaded. The second line has a positive slope and goes through (0, negative 3) and (3, 0). Everything to the right of the line is shaded. The section in quadrant 1 is labeled 3, the section in quadrant 2 is labeled 2, the section in quadrant 3 is labeled 1, and the section in quadrant 4 is labeled 4.
In which section of the graph does the actual solution to the system lie?
1
2
3
4
Answer:
3
Step-by-step explanation:
A forest fire wipes out many trees in an ecosystem. The main limiting factor would be
a.water
b.shelter
c.herbivores
d.predators
Can someone check my work?
Answer:
you're correct! :)
Step-by-step explanation:
Yes it is correct dear.
Now you can make it on a graph by the solutions of the equation.
For the value of x,
[tex]9x + 3y = 15 \\ = > 9x = 15 - 3y \\ = > x = \frac{15 - 3y}{9} \\ = > x = \frac{3(5 - y)}{9} \\ = > x = \frac{5 - y}{3} [/tex]
And for value of y,
[tex]9x + 3y = 15 \\ = > 3y = 15 - 9x \\ = > y = \frac{15 - 9x}{3} \\ = > y = \frac{3(5 - 3x)}{3} \\ = > y = 5 - 3x \: \: \: or \: \: \: \\ y = - 3x + 5[/tex]
Show how you would simplify the following expressions. Show your work.
Solve the equation and write a text explaining every step of your solution. 4 - 3x = 14 - 5x
How do you do this?
Answer: 14 - 5 x 5 = -11, and 4 - 3 x 5 = -11.
Step-by-step explanation:
what i did here was just plug in some numbers until the equations reached the same solution. there are probably better ways to do this but i hope this helps anyway.
I need help plzzzz answer quick
Answer:
what do you do, help
Step-by-step explanation:
The following are the last 10 run scores Colin got in cricket: 5, 3, 9, 11, 4, 28, 0, 30, 0, 23 a) Work out Colin's mean score.
Answer:in pula mea dute si invata nu mai venii aici\
Step-by-step explanation:vezii ca daca nu invetii ii zic lu mata aia creata ca folosesti brainly bai nesimtitule mars la munca nu la frecat ou bai labare.
[tex]\sqrt{x}[/tex]
Pete has a blueprint that shows the layout of his house. Every 4 inches on the blueprint represents 3 feet of the actual house. One of the walls on the blueprint is 30 inches long. What is the actual length of the wall?
Answer:
30÷4=7.5 ft ?I'm not sure if it's right
The dance committee of Pine Bluff Middle School earns $72 from a bake sale and will earn $4 for each ticket they sell to the Spring Fling dance. The dance will cost $400.
Write an inequality to determine the number, ttt, of tickets the committee could sell to have money left over after they pay for this year's dance.
Answer:
t > 82
Step-by-step explanation:
First write what we know.
Earned $72
$4 per ticket, t
Cost is $400
So let's write our equation:
The cost is $400 so we put that on the left side,
$400 =
Now on the right side, we know they earned $72, so +$72 and each ticket (t) is $4 so $4t would represent the amount earned after they sell a certain number of tickets.
So we write:
$400 = $4t + $72 Now solve for t to find the number of tickets they need to sell.
400 = 4t + 72 Subtract 72 from each side.
400 - 72 = 4t + 72 - 72
328 = 4t Divide each side by 4.
328/4 = 4t/4
328/4 = t
82 = t
If the committee wants money left over they need to sell more than 82 tickets!
Our inequality is:
t > 82