what is the answer to 3n+5=6
Answers
Answer:
n=1/3 or n=0.3, the 3 is infinite so put the line ontop of the 3
Step-by-step explanation:
Answer:
n = 0.33 or 1/3
Step-by-step explanation:
opposite operations ( + becomes - ) ( × becomes ÷ )solve for the unknown ( n ) steps are clearly shown in the photohope i helped you ... if I did can I get brainliest ☆ have a nice day ♡
Related Questions
The difference between two whole numbers is 8. Twice the smaller number is 4 more than the larger number. What is the smaller number?
Answers
Answer: 12
Step-by-step explanation:
x - y = 8
2y = 4 + x
y = ?
x - y = 8
x = 8 + y
2y = 4 + x
2y = 4 + (8 + y)
2y = 12 + y
2y - y = 12
y = 12
The smallest number is 12.
Given that,
The difference between two whole numbers is 8. Twice the smaller number is 4 more than the larger number.Here we assume the larger number be x and smallest number be yBased on the above information, the calculation is as follows:
x - y = 8
2y = 4 + x
So,
x = 8 + y
Now
2y = 4 + (8 + y)
2y = 12 + y
2y - y = 12
y = 12
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For A BRAINLST PLEASE HELP ASAP
Answers
Step-by-step explanation:
listen in class.
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HELLLPPP
If you work for 4 hours and 20 minutes three days a week and twice a week you work 6 hours and 15 minutes how many hour a week do you work.
A.) 24 hours and 30 minutes
B.) 24 hour 30 minutes
C.)25 hours 30 minutes
D.) 24 hours
Answers
15+15+20+20+20= 1 Hr 30 Min
24+1= 25 Hours + 30 Minutes=
Final answer: C) 25 hours and 30 minutes
what is 10% of $12.00
Answers
Example/ buy item at $12 with 10% discount. You will pay 12 - 1.2 = $10.8
Ricardo calculates a line of best fit for a data set with integer x-values 1 through 6. Complete the sentence with the correct word
Using a line of best fit with the equation y = -3x+21 to predict the value of y when x = 10 is an example of
Choose...
correlation
extrapolation
interpolation
causation
Answers
This type of prediction is extrapolation
Give the equation for the line of best fit expressed as:
y = -3x + 21
If x = 10, substitute the value of x into the function to get y
y = -3(10) + 21
y = -30 + 21
y = -9
This type of prediction is extrapolation. Extrapolation has to do with estimating a value given that a particular variable is given.
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A scale model of a rectangular living room is 6 3/4 inches by 5 1/2 inches. If 1 inch represents 3 feet of the actual room, find the area of the actual room.
Answers
The actual area of the room after unit conversion will be equal to 334 1/8 feet².
What is area?An object's area is how much space it takes up in two dimensions. It is the measurement of the number of unit squares that completely encompass the surface of a compact figure. The squared unit, which is frequently expressed as inches, square feet, etc., is the accepted unit of area.
As per the data mentioned in the question,
Let the length of the room, l = 6 3/4 inches = 27/4 inches
1 inch = 3 feet
27/4 inch = 81/4 feet
Let the width of the room, w = 5 1/2 inches = 11/2 inches
1 inch = 3 feet
11/2 inches = 33/2 feet
Now, use the formula of the area of the rectangle,
A = wl
A = 33/2 × 81/4
A = 2672/8 feet²
Or, it can be written in mixed fraction form as 334 1/8 feet².
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Tom is twice as old as Marie
Marie is 5 years older than kay
The total of their ages is 43
How old is Marie
Answers
Answer:
Marie is 9.5 years old
Step-by-step explanation:
In pic
__________________________________
(Hope this helps can I pls have brainlist (crown)☺️)
Timothy and Juan are completing their homework and are having a debate about a linear equations question.Timothy said 2 + 6 (x-4) = 3x -18 + 3x has no solution, but Juan said he could prove a value existed that can be substituted for x to make it a true statement. Who is correct? Justify your reasoning. plz help i need this grade
Answers
Answer:
We're asked to solve this system of equations:
\begin{aligned} 2y+7x &= -5\\\\ 5y-7x &= 12 \end{aligned}
2y+7x
5y−7x
=−5
=12
We notice that the first equation has a 7x7x7, x term and the second equation has a -7x−7xminus, 7, x term. These terms will cancel if we add the equations together—that is, we'll eliminate the xxx terms:
\begin{aligned} 2y+\redD{7x} &= -5 \\ +~5y\redD{-7x}&=12\\ \hline\\ 7y+0 &=7 \end{aligned}
2y+7x
+ 5y−7x
7y+0
=−5
=12
=7
Solving for yyy, we get:
\begin{aligned} 7y+0 &=7\\\\ 7y &=7\\\\ y &=\goldD{1} \end{aligned}
7y+0
7y
y
=7
=7
=1
Plugging this value back into our first equation, we solve for the other variable:
\begin{aligned} 2y+7x &= -5\\\\ 2\cdot \goldD{1}+7x &= -5\\\\ 2+7x&=-5\\\\ 7x&=-7\\\\ x&=\blueD{-1} \end{aligned}
2y+7x
2⋅1+7x
2+7x
7x
x
=−5
=−5
=−5
=−7
=−1
The solution to the system is x=\blueD{-1}x=−1x, equals, start color #11accd, minus, 1, end color #11accd, y=\goldD{1}y=1y, equals, start color #e07d10, 1, end color #e07d10.
We can check our solution by plugging these values back into the original equations. Let's try the second equation:
\begin{aligned} 5y-7x &= 12\\\\ 5\cdot\goldD{1}-7(\blueD{-1}) &\stackrel ?= 12\\\\ 5+7 &= 12 \end{aligned}
5y−7x
5⋅1−7(−1)
5+7
=12
=
?
12
=12
Yes, the solution checks out.
If you feel uncertain why this process works, check out this intro video for an in-depth walkthrough.
Example 2
We're asked to solve this system of equations:
\begin{aligned} -9y+4x - 20&=0\\\\ -7y+16x-80&=0 \end{aligned}
−9y+4x−20
−7y+16x−80
=0
=0
We can multiply the first equation by -4−4minus, 4 to get an equivalent equation that has a \purpleD{-16x}−16xstart color #7854ab, minus, 16, x, end color #7854ab term. Our new (but equivalent!) system of equations looks like this:
\begin{aligned} 36y\purpleD{-16x}+80&=0\\\\ -7y+16x-80&=0 \end{aligned}
36y−16x+80
−7y+16x−80
=0
=0
Adding the equations to eliminate the xxx terms, we get:
\begin{aligned} 36y-\redD{16x} +80&=0 \\ {+}~-7y+\redD{16x}-80&=0\\ \hline\\ 29y+0 -0&=0 \end{aligned}
36y−16x+80
+ −7y+16x−80
29y+0−0
=0
=0
=0
Solving for yyy, we get:
\begin{aligned} 29y+0 -0&=0 \\\\ 29y&=0 \\\\ y&=\goldD 0 \end{aligned}
29y+0−0
29y
y
=0
=0
=0
Plugging this value back into our first equation, we solve for the other variable:
\begin{aligned} 36y-16x+80&=0\\\\ 36\cdot 0-16x+80&=0\\\\ -16x+80&=0\\\\ -16x&=-80\\\\ x&=\blueD{5} \end{aligned}
36y−16x+80
36⋅0−16x+80
−16x+80
−16x
x
=0
=0
=0
=−80
=5
The solution to the system is x=\blueD{5}x=5x, equals, start color #11accd, 5, end color #11accd, y=\goldD{0}y=0y, equals, start color #e07d10, 0, end color #e07d10.
Want to see another example of solving a complicated problem with the elimination method? Check out this video(Opens in a new window).
Step-by-step explanation:
Does anyone know how to solve this?
Formula: a^2+b^2= c^2
Answers
Answer:
x=45
Step-by-step explanation:
A = 2(x+1)^2
B=4x^2
C=5x-2^2
2x+2^2 = 4x+4
4x^2 = 16x
C= 5x-2^2 = 25x-4
4x+4+16x+25x-4=
20x+25x = 45x
4-4 = 0
It is very long and took brainpower not even sure if right but tried
Can anyone help me ASAP!
Answers
Answer:
29 mi
Step-by-step explanation:
d=sqrt(21^2 + 20^2)
d=sqrt(441 +400)
d=sqrt(841)
d=29 mi
The area of Australia/Oceania is approximately 7.69 × 106 square kilometers. Its population is approximately 3.11 × 107 people. What is the approximate population density (people per square kilometer) of Australia/Oceania? Write your answer in standard form. If necessary, round your answer to the nearest hundredth.
PLEASSSSEEEE HELPPPPPPPPPPP
Answers
Answer: 3.11*10^7/7.69*10^6
3110/769
4.04
Step-by-step explanation:
help asap help asap for brainlist
part A and Part B
Answers
Answer:
part A:
32.10
part B:
156 miles
Step-by-step explanation:
Enter a linear equation that models the situation.
A drugstore sells pens for $1.50 each and notebooks for $4 each. The owner would like to sell $45 of these items each day. Use p for the number of pens and n for the number of notebooks.
A linear equation that models the situation is = 45.
Answers
1. What is the slope of the line y = 5x +4?
=
Answers
Answer:
5 is the slope
Step-by-step explanation:
Because the equation is y=mx+b
m=slope and b=y intercept
Answer:
The slope of the line y = 5x + 4 is 5.
Step-by-step explanation:
In the equation y = mx + b,
m represents the slope
b represents the y-intercept.
In the equation y = 5x + 4, 5 takes place of m. Since this is the case, m = 5, or 5 is the slope.
Mateo plays on his school basketball team. From past history, he knows that his probability of making a basket on a free throw is 0.8. Suppose he wants to create a simulation using random numbers to estimate the probability of making at least 3 baskets on his next 5 free throw attempts. Which of the following assignments of the digits 0 to 9 could be used for the simulation?
A) Let the even digits represent making a basket and the odd digits represent not making a basket
B) Let the digits 0 and 1 represent making a basket and the digits from 2 to represent not making a basket.
C) Let the digits from 0 to 3 represent making a basket and the digits from 4 to 9 represent not making a basket
D) Let the digits from 0 to 6 represent making a basket and the digits from 7 to 9 represent not making a basket.
E) Let the digits from 0 to 7 represent making a basket and the digits 8 and 9 represent not making a basket.
Answers
Answer:
e
Step-by-step explanation:
(2^-4)^-3 what is the answer to this math problem i really need help
Answers
Step-by-step explanation:
[tex] = { ({2}^{ - 4}) }^{ - 3} [/tex]
[tex] = {2}^{ - 4 \times ( - 3)} [/tex]
[tex] = {2}^{12} [/tex]
[tex] { ({2}^{ - 4}) }^{ - 3} = {2}^{12} [/tex]
At noon, the temperature is 76°F.
At 9:00 p.m., the temperature is 57°F.
What is the percent change between the temperature at noon and the temperature at 9:00 p.m.?
Answers
Answer:
25%
Step-by-step explanation:
% Change = Change ÷ Original × 100
% Change = 19 ÷ 76 × 100
% Change = .25 × 100
% Change = 25
Answer:
Step-by-step explanation:
Chelsea is graphing the function f(x) = 20(One-fourth)x. She begins by plotting the initial value. Which graph represents her first step?
On a coordinate plane, the point (0, 0.25) is graphed.
On a coordinate plane, the point (0.25, 0) is graphed.
On a coordinate plane, the point (0, 20) is graphed.
On a coordinate plane, the point (20, 0) is graphed.
Answers
Answer: C
Step-by-step explanation: : Chelsea is graphing the function f(x) = 20(\frac{1}{4})^xf(x)=20( 41 ) x
Answer:
On a coordinate plane, the point (0, 20) is graphed.
Step-by-step explanation:
Edge
What should be done first to evaluate the expression?
5 - 3 × (4 - 2)2 ÷ 5
(A) Subtract 2 from 4
(B) Subtract 3 from 5
(C) Multiply by 3
(D) Divide by 5
Answers
Answer:
A
Step-by-step explanation:
becuase you follow PEMDAS
Given:
A
C
‾
⊥
B
D
‾
AC
⊥
BD
and
∠
A
≅
∠
C
.
∠A≅∠C.
Prove:
△
A
B
D
≅
△
C
B
D
△ABD≅△CBD.
Answers
Answer:
Step-by-step explanation:i solve is A△B=(A∪B)∖(B∩A)=(A∪B)∩(B∩A)c=(A∪B)∩(Bc∪Ac)=(B∪A)∩(Ac∪Bc)=(B∪A)∩(A∩B)c=(B∪A)∖(A∩B)=B△A
The triangles are congruent by SSS criteria
What is Congruence?In geometry, two figures or objects are congruent if they have the same shape and size, or if one has the same shape and size as the mirror image of the other.
Given here BD is common and AB=BC and since ∠A = ∠B also they share a common right angle therefore by default the other two remaining angles they must be equal by the angle sum property. Therefore opposite sides of a congruent angles must be equal.
Hence, by SSS property the triangles are Congruent.
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The Phillips family and the Griffin family each used their sprinklers last summer. The water output rate for the Phillips family's sprinkler was 25L per hour. The water output rate for the Griffin family's sprinkler was 15L per hour. The families used their sprinklers for a combined total of 55 hours, resulting in a total water output of 975L. How long was each sprinkler used
Answers
Last summer, both the Griffin family and the Phillips family used their sprinklers. 15 hours of use by Philips family,40 hours of use by Griffin family for each sprinklers.
Given that,
Last summer, both the Griffin family and the Phillips family used their sprinklers.
The sprinkler used by the Phillips family produced 25L of water every hour.
The Griffin family's sprinkler produced 15L of water per hour.
The households utilized their sprinklers for a total of 55 hours in total, producing 975L of water.
We have to find how long did you use each sprinkler.
Let us take
p be hours of use by Philips family
55-p be hours of use by Griffin family
Now, we get
25p+15(55-p)=975
25p+825-15p=975
10p=975-825
10p=150
p=150/10
p=15
55-p=55-15=40
Therefore, 15 hours of use by Philips family,40 hours of use by Griffin family.
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Add: 19|12 + 25|12 Simplify my Answer.
Answers
Answer:
8436
Step-by-step explanation:
19(|12+25|)(12)
=8436
What letter on this number line represents -(3/2)?
Answers
Answer:
B
Step-by-step explanation:
- 3/2 is - 1.5 , and B is - 1.5
How many x-intercepts does the parabola with the following
equation have?
y= -x^2-6x-17
Answers
Step-by-step explanation y= -x^2-6x-17
y+-(x+3)2_8
What is the value of x?
Answers
Answer: 71
Step-by-step explanation:
An isosceles triangle has two equal angles. The sum of a triangle is 180 degrees so the answer of x is 71 degrees.
Help me I need help!
Answers
Answer:
56°÷
Step-by-step explanation:
The sum of the central angles in a circle is 360°. That means unmarked angle RUS is ...
360° -111° -137° = 112°
Inscribed angle RTS is half the measure of central angle RUS, so ...
∠RTS = 112°/2 = 56°
Which of the following is the graph of the equation y=−x?
Answers
Answer:
The first image
Step-by-step explanation:
y=mx+b
The variable b represents the y-intercept, since there is no b in this equation, we know that the y intercept in 0.
The variable "mx" is represented in this equation as -(1)x. "mx" is slope.
NEED ANSWER ASAP!!!!!!!!!!
Find the slope from the following points:
(-9,3) (0,-7)
10/9
-10/9
-4/9
4/-9
Answers
Answer: -10/9
Step-by-step explanation:
Slope = (y2 - y1) / (x2 - x1)
= (-7 - 3) / (0 - (-9))
= (-7 - 3) / (0 + 9)
= -10 / 9
i need help plz plz plz
Answers
Step-by-step explanation:
The answer is
X=23
Hope it helpsss
Andrew is showing his work in simplifying −4.5 + 4.2 + 5.6 − 7.3. Identify any errors in his work or in his reasoning.
Answers
Answer:
D. Step 5Step-by-step explanation:
Andrew made a mistake at last step.
It should be:
-11.8 + 9.8 = 9.8 - 11.8 = -2 but not -21.6