Step-by-step explanation:
2x+19=65
2x+19-65
2x-46
2x=46
x=46/2
x=23
so the number is 23
-2+x=41 positive or negative
Answer:
in order to determine the sign, we need to solve it first
lets collect the like terms by one side
x=41+2
x=43
so, the sign is positive
can i have brainliest if it helped, please, i really need it
stay safe from the virus
plz follow me, i'll follow back
Step-by-step explanation:
-2n divided by 3 + (4n - n), when n = 6
Step-by-step explanation:
Divisor = -2n = -2 * 6 = - 12
Dividend = 3 + ( 4 * 6 - 6) = 3 + 18 = 21
Now
21 / -12
dividing numerator and denominator by 3
= - 7 / 4
Step-by-step explanation:
= -2n
= -2×6
= -12
again,
=3+(4n-n)
= 3+4×6-6
=3+24-6
=21
now,
= -12
21
hope it helps.
If Y varies directly with X,
find Y when X=24, if Y = 5
when X= 30.
Answer:
Y=4 when X =24
Step-by-step explanation:
If Y varies directly with X, find Y when X=24, if Y = 5 when X= 30.
We can write:
[tex]Y\:\alpha\: X\\Y=kX[/tex]
Where k is known as constant of proportionality
Now, we are given: Y = 5 when X= 30.
We can find value of k
[tex]Y=kX\\5=k(30)\\k=\frac{5}{30}\\k=\frac{1}{6}[/tex]
Now, we will find Y when X = 24
and k=1/6
[tex]Y=kX\\Y=\frac{1}{6}(24)\\Y=4[/tex]
So, Y=4 when X =24.
Please I could use some help!
The population of Kenya was 45.1 million in 2009 and has been growing by 2.3% each year. If this trend continues, in what year will the population exceed 52.2 million?
Answer:
the year is 2016
Step-by-step explanation:
The computation is shown below:
Given that
The population in 2009 is 45.1 million
And it would be increased 2.3% each year
So,
In the year 2010 it is = 45.1 million × (1 + 0.023) = $46.14 million
In the year 2011, it is = $46.14 million × (1 + 0.023) =$47.20 million
In the year 2012, it is = $47.20 million × (1 + 0.023) = $48.29 million
In the year 2013, it is = $48.29 million × (1 + 0.023) = $49.40 million
In the year 2014, it is = $49.40 million × (1 + 0.023) = $50.54 million
In the year 2015, it is = $50.54 million × (1 + 0.023) = $51.70 million
In the year 2016, it is = $51.70 million × (1 + 0.023) = $52.89 million
Hence, the year is 2016
Can someone help me I have two more other questions they are 15 points each I just posted them right now! Thanks so much
Answer:
76˚
Step-by-step explanation:
All angles of a triangle total up to 180˚ so we can make this equation:
x - 14 + 1/2x + 7 + 2x - 128 = 180
3.5x - 135 = 180
3.5x = 315
x = 90
Angle A is x - 14
90 - 14
76
Leslie and her friend eat lunch at a restaurant.
To determine how much money to leave as a tip, she multiplies the bill by 0.18.
How much money should she leave as a tip if the bill is $25?
A. $6.25
B. $5.00
C. $4.50
D. $3.70
Leslie and her friend eat lunch at a restaurant.
To determine how much money to leave as a tip, she multiplies the bill by 0.18.
How much money should she leave as a tip if the bill is $25?
A. $6.25
B. $5.00
C. $4.50
D. $3.70
Solution:[tex]25 \times 0.18[/tex]
[tex] = 4.5[/tex]
Answer:C. $4.50
#CarryOnLearning
#AnswerForTrees
#BrainlyBookSmart
1. Based on data collected over several sessions, a statistically minded trainer of office typists modeled the linzoom in
between the number of hours of training a typist receives and the typist's speed (in words per minute) with the equauon
speed = 10.3 +5.4(hour). After some training, one of the typists was told that the speed he attained had a residual of 4.2
words per minute. How should he interpret this?
Choose the correct answer below.
1
A. He cannot interpret his residual without also knowing the correlation.
B. He cannot interpret his residual without also knowing the size of other people's residuals.
C. He types slower than the model predicted, given the amount of time he spent training.
D. He types faster than the model predicted, given the amount of time he spent training.
Answer:
Statement D is correct.
Step-by-step explanation:
Solution:
Data Given:
Linear Regression Relationship = Speed = 10.3 + 5.4 (hour)
Linear Regression Relationship = y = mx + c
Here,
m = slope = 5.4
c = 10.3 = y - intercept
The correct Answer is D)
Because:
As, the residual value is positive, it means the typist attained faster speed than the model predicted. As we know, residuals is the result of difference between predicted values of the model and data values. On the contrary, if residual would be negative then we would say that typist speed is slower than the model predicted.
Hence, Statement D is correct.
Vanessa has 16 songs on a Classic Rock CD. Six of the songs are by the Beatles, 4 are by the Rolling Stones, 4 are by the Who, and 2 are by the Doors. Vanessa plays the CD. She selects a setting that randomly chooses songs to play.
Find the probability of each event:
a) The first 3 songs played are by the Beatles.
b) The first 2 songs played are by the Rolling Stones and the next 2 songs are by the Beatles.
c) The first 2 songs played are by the Doors, and the next song played is either by the Beatles or the Rolling Stones.
Answer:
a)the first 3 songs played are by the beatles
Step-by-step explanation:
i think its a
f=2(3-5g) make g the subject
Answer:
The function 'f' in terms of 'g'
[tex]g = \frac{3}{5}-\frac{f}{10}[/tex]
Step-by-step explanation:
Explanation:-
Given function f = 2 (3-5g)
f = 6 - 10 g
10g = 6 - f
⇒ [tex]g = \frac{6-f}{10}[/tex]
[tex]g = \frac{6}{10}-\frac{f}{10}[/tex]
[tex]g = \frac{3}{5}-\frac{f}{10}[/tex]
(7^8)^2 =7^ ? please help hehe
Answer:
16
Step-by-step explanation:
add the 2/5, 3/4, 1/2
1.65
33/20
1 13/20
Your welcome
as you move to the ______on the number line the values of the numbers ________
8-5x =2x + 20
Simplify
I’ll give brainliest
Answer:
X= - 12/7 i hope it is helpful have a nice day if you want steps i will show you
Answer/Step-by-step explanation:
Rearrange terms8 − 5 = 2 + 2 0 − 5 + 8 = 2 + 2 0
Subtract 8 from both sides of the equation − 5 + 8 = 2 + 2 0 − 5 + 8 − 8 = 2 + 2 0 − 8SimplifySubtract the numbers− 5 = 2 + 1 2
Subtract 2 2x 2x from both sides of the equation − 5 = 2 + 1 2 − 5 − 2 = 2 + 1 2 − 2xSimplify Combine like terms− 7 = 1 2
Divide both sides of the equation by the same term− 7 = 1 2 − 7 − 7 = 1 2 − 7
Simplify Cancel terms that are in both the numerator and denominator Divide the numbers= − 1 2 7
=]
Write your answer with no space and any fraction with “/“
Answer:
y + 3 = -½(x - 1)
Step-by-step explanation:
Point-slope form equation is given as y - b = m(x - a), where,
m = slope, and (a, b) is a point the line passes through.
Given that the line is perpendicular to the y = 2x - 1, the slope (m) will be the negative reciprocal of 2, which is -½.
Thus, substitute m = -½, a = 1, and b = -3 into y - b = m(x - a).
Thus:
y - (-3) = -½(x - 1)
y + 3 = -½(x - 1)
Luis is taking out a car loan for $5,000. He plans on paying off the car loan in 2 years. At the end of 2 years, Luis will have paid $300 in interest. What is the simple interest rate on the car loan?
Answer:
3%
Step-by-step explanation:
Using the equation ŷ = 2.6 − 3.1x, what is the predicted value if x is 4.3?
Select one:
a. −10.73
b. 10.73
c. 15.93
d. −15.93
e. 0.54
Work Shown:
Plug x = 4.3 into the equation given
ŷ = 2.6 − 3.1x
ŷ = 2.6 − 3.1(4.3)
ŷ = 2.6 − 13.33
ŷ = -10.73
Note: The symbol ŷ is read as "y hat". It's used to estimate the y value when it comes to regression equations.
What is the difference between -2 and 7
Answer:
21
Step-by-step explanation:
Answer:
The answer is 9.
Step-by-step explanation:
If you have a number line, which I don't, you can count the spaces. The answer should be 9.
y = -2x - 9
6x - 5y = -19
Hey there!
y = -2x - 9
6x - 5y = -19
We're going to label the first equation as "1" and the second equation as "2." Now, in order to find the values of "x" & "y," we need to even out the equations by placing their "x" and "y" markers on the same side of the equal sign.
Let's start off by adding 2x to both sides of equation 1.
1) y + 2x = -2x - 9 + 2x
Simplify.
Equation 1 is now: 2x + y = -9
Now, we need to multiply equation 1 equations by "3" in order to create "6x" in both equations. This helps us find the value of "y" because it cancels out the "x" in both equations.
1) (2x + y = -9) × 3
Simplify.
1) 6x + 3y = -27
2) 6x - 5y = -19
Now that our equations are lined up, we can subtract equation 2 from equation 1.
6x - 6x = 03y - (-5y) = 3y + 5y = 8y-27 -(-19) = -27 + 19 = -8Let's put this all together now.
8y = -8
Divide both sides by 8!
8y ÷ 8 = -8 ÷ 8
Simplify.
y = -1Now that we have the value of y, we can easily plug it into one of our equations to get our "x" value.
Equation 1: y = -2x - 9
Plug in "-1" for "y."
-1 = -2x - 9
Add 9 to both sides
-1 + 9 = -2x - 9 + 9
Simplify.
8 = -2x
Divide both sides by -2.
8 ÷ -2 = -2x ÷ -2
Simplify.
-4 = xTherefore, x = -4 & y = -1
(-4, -1)Hope this helped! :)
Answer:
x = - 4
y = - 1
Step-by-step explanation:
y = -2x - 9
2x + y = - 92x + y = -9 (× 3)
6x - 5y = -19
______________
Elimination
6x + 3y = - 27
6x - 5y = - 19
____________ _
8y = - 8y = - 8/8y = -1Solution for x :
Substitution
6x - 5y = -19
6x - 5(-1) = -19
6x + 5 = - 19
6x = - 19 - 5
6x = - 24
x = -24/6
x = -46x - 5y = - 19
6(-4) - 5(-1) = - 19
-24 + 5 = - 19
-19 = - 19
(RIGHT) ✅
#LearnWithEXO
Which of The following system of equations is solved, what would be the value of the Y coordinate?
3x + 4y = 7
6x - 4y = 38
A)5
B)-5
C)2
D)-2
jesse bought a car for 2,200,000 he sold for a 20% profit from the money raised from the sale he bought another more expensive car which unfortunately he had to sell for a 10% loss that was his overall profit or loss
Answer:1,76,000 Profit
Step-by-step explanation:
Given
Jesse initially bought the car for 2,200,000 and sold it for 20 %
S.P.=C.P.(1+Profit%)
so, the Selling price of the car is S.P.=[tex]2,200,000\times 1.2=2,640,000[/tex]
profit=2,640,000-2,200,000=4,40,000
After this, he bought another car and sells it for a 10 % loss
So, the selling price of the car is [tex]2,640,000\times 0.9=2,376,000[/tex]
loss=2,640,000-2,376,000=2,64,000
Net Profit or loss=4,40,000-2,64,000=1,76,000 Profit
Simon started for school at 8:30 he got there 15minuter later. what time did he get to school
Answer:
8:45
Step-by-step explanation:
XD 8:30+15 mins =8:45
Question 9: 5 pts
The number of patients treated in a dental office each day was recorded for 11 days. Find the
median for this data
10, 20.15, 15, 10, 14, 15, 15, 13, 25, 24
If the answer is not a whole number, enter it as a decimal. Round the decimal to the nearest
tenth, if needed
Answer:
15
Step-by-step explanation:
10, 20.15, 15, 10, 14, 15, 15, 13, 25, 24
Organize the data from least to greatest
10, 10, 13, 14, 15, 15, 15, 20.15, 24, 25
Cross out data from each side until one point is left. So cross out one from one side, then another from the other side, continue this process until only one number is left. If two numbers are left, then take the average of the two numbers.
10, 10 , 13, 14, 15, 15, 20.15, 24, 25
10, 13, 14, 15, 15, 20.15, 24
13, 14, 15, 15, 20.15
14, 15, 15,
15
whoever gets it correct - i will mark their answer as a brainliest!
Answer:
9a - 8a
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
3a - 2a = 1a or a
a * 4a = 4a
4a + 6a = 10a
16. 68, ......., 96, 113, 132
a. 80
b. 81
c. 96
Answer:
B.
Step-by-step explanation:
So there is a pattern:
132-113=19
113-96=17
96-? is going to equal 15
So 96-81=15
And 81-68=13
HELP WILL GIVE BRAINLIEST IF CORRECT
Answer:
Step-by-step explanation:
100 POINTS IF YOU ANSWER!!
Determine which expression(s) is in its simplified form. Select all situations that apply.
x²/xy
12x/y
4x/32z
5z/xy
z^4/xyz
Answer:
the answer is 12x\y hope it helps
HELP ASAP!! MARKING BRAINLIEST!!! WORTH 10 POINTS FIRST PERSON TO ANSER CORRECTLY GETS BRAINLIEST!!!!
Which fraction represents the product of -5/6 times 5/6 in simplest form?
A. -1
B. -5/6
C. -25/36
D. 25/36
Answer:
-25/36
Step-by-step explanation:
-5/6 x 5/6 = -25/36
There is no way to simplify it.
You just needed to multiply the deniminators and the numerators. And since you can't simplity -25/36, you have your answer.
Answer:
C. -25/36
Step-by-step explanation:
-5/6 x 5/6 = -25/36
There is no way to simplify it.
You just needed to multiply the deniminators and the numerators. And since you can't simplity -25/36, you have your answer.
Hope this helps :)
Two trains leave the station at the same time, one heading west and the other east. The westbound train travels at 75 miles per hour. The eastbound train
travels at 85 miles per hour. How long will it take for the two trains to be 256 miles apart?
Answer:
1.6 hours
Step-by-step explanation:
The two trains will be (75+85)=160 miles apart after each hour.
Therefore the time taken for the trains to be 256 miles apart would be 256/160 hours = 1.6 hours.
sophie swims 10 miles in each practice session. How long did her practice take the day she was swimming with an average speed of three times slower than m miles per hour
Find the value of x in the triangle shown
Answer:
Step-by-step explanation:
3² + 5² = 34
√34 ≅ 5.83