Answer:
1. x = -3/2 y+ 1/2z - 2
2. x = -2/3y + -2/3z + 14/3
3. x = 3z - 13
Step-by-step explanation:
solve for x
which sentence is true
A race car can complete 8 laps in 1/3 hour at this rate how many hours will it take the race car to complete 1 lap
Answer:
It will take 6.66 minutes to complete one lap.
what is 3 wholes and 3/10+ 1/2
Answer:
Improper Fraction: 19/5 Mixed number: 3 and 4/5
Step-by-step explanation:
1. Convert to improper fraction= 33/10
2. 1/2 is also equal to 5/10
3. add 33/10 and 5/10 = 38/10
4. Simplify = 19/5
I hope this helped!
Bought 16 packs of cola each pack had 6 cans he drank 9 cans how many are left?
Answer:
87
the pack is 16 and there are 6 cans in the pack and he drank nine
16*6-9
A sample of 87 glass sheets are measured for thickness. They have a sample mean of 4.20 mm and a sample standard deviation of 0.10 mm. What is the level of the confidence interval (4.185, 4.215)?
Answer:
83.85%
Step-by-step explanation:
The formula for confidence interval
= Mean ±( z × Standard deviation/√n)
Confidence Interval = Mean ± Margin of Error
Mean = 4.20mm
n = 87
Standard deviation = 0.10mm
z = ????
Hence:
Confidence Interval = Mean ± Margin of Error
Step 1
We find the Margin of Error
(4.185, 4.215) = 4.20 ± Margin of Error
4.20 - 4.185 = 0.015
4.215 - 4.20 = 0.015
Hence, Margin of Error = ± 0.015
Step 2
We find the z score
Margin of Error = z × Standard deviation/√n
±0.015 = z × 0.10/√87
± 0.015 = 0.0107211253z
z = ±0.015/0.0107211253
z = 1.39910686428
z score ≈ 1.4
Step 3
We find the confidence interval that corresponds to 1.4
Using the z table to find the Probability
P(z = 1.4) = 83.85%
Therefore, the level of the confidence interval (4.185, 4.215) is 83.85%
Answer:
[4.1mm to 4.3mm]
Step-by-step explanation:
Sample size = 87 glass sheets
Sample mean = 4.2mm
Sample standard deviation = 0.1mm
Confidence interval or level = the range from lower limit of sample mean to upper limit of sample mean
[4.2 - 0.1] to [4.2 + 0.1] = [4.1mm to 4.3mm]
An ice cream truck vender sells 15 vanilla ice cream bars every 2 hours At this rate, how many hours does it take the vendor to sell 90 vanilla ice
cream bars?
675 hours
103 hours
T7 hours
12 hours
Answer:
12 hours
Step-by-step explanation:
15/2=7.5
90/7.5 = 12
Identify and set up the Trig relationship
X
Answer:
a: Tanθ = x/y
Step-by-step explanation:
We should recall the trigonometric ratios:
sin = opposite/hypotenusecos = adjacent/hypotenusetan = opposite/adjacentA way to remember this is SOH, CAH, TOA
To solve, we test each option and see if they align with the trigonometric ratios
(see image)
what's the answer? please help
Answer:
C. 35
Step-by-step explanation:
I just went through all the numbers, multiplied them by 2, because you start with x which is 50, and the goal is to get to 120 with 50 and a number multiplied by two, so I tried 35 which would be 70 when multiplied by two, then added 50, which would make 120.
BRAINLIST AND 20 POINTS I REALLY NEED HELP ASAP (10 POINTS FOR EACH QUESTION)
Answer:
7 bottles
$10
Step-by-step explanation:
multiply
1/6×42= 7 bottles
5/9×18= $10
You are facing West. Turn 90 degrees left. Turn 180 degrees
right. Reverse direction. Turn 45 degrees left. Reverse direction.
Turn 270 degrees right.
In which direction are you now facing?
You would be facing Northeast.
What’s a better buy? 3 pounds of apples for $1.89 or 1 pound of apples for $.79?
WILL MARK BRAINLYIEST ANSWER ASAP PLZ!
Answer:
3 pounds of apples for $1.89
Step-by-step explanation:
1 pound of apples for $.79
so 3 pound x 0.79= 2.37
So 1.89 for 3pound is the better buy
what number is the smallest .12 or.079
Answer:
.079 is the smallest
Answer:
.079 would be smaller than .12.
Step-by-step explanation:
Since the tenths place in .079 has a zero and tenths place in .12 has a 1, .12 would be larger.
PLEASE HELPMME WITH THIS QUESTION
Answer:
12
Step-by-step explanation:
that is my question
A line segment that forms a right angle with another segment at its midpoint
is a
A. angle bisector
B. perpendicular bisector
C. regular polygon
D. rectangle
Answer:
B
Step-by-step explanation:
Please mark brainliest if I helped.
A line segment that forms a right angle with another segment at its midpoint is a perpendicular bisector.
Option B is the correct answer.
What is a line segment?A line segment is part of a line that is bounded by two distinct endpoints and contains every point on the line between its endpoints.
It can be measured by its length and is finite in size.
We have,
A perpendicular bisector is a line or line segment that cuts another line segment into two equal parts and forms a right angle with it.
The midpoint of the line segment is the point where the perpendicular bisector intersects it.
Therefore, if a line segment forms a right angle with another segment at its midpoint, it is a perpendicular bisector since it cuts the segment into two equal parts and forms a right angle with it.
Thus,
A line segment that forms a right angle with another segment at its midpoint is a perpendicular bisector.
Learn more about line segments here:
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find the value of each missing variable? y=
Answer:
The symbol stands for an unknown number, the symbol y stands for an unknown number and the symbol 2 stands for a known number, two. In algebra when two symbols that stand for a number are placed beside each other the operation between them is taken to be multiplication.
Step-by-step explanation:
Members of a youth group held a bake sale to raise money for their summer trip. They sold 30 cakes, 40 pies, and 200 giant cookies, and raised a total of $684.50. The price for a pie was $2.00 less than the price of a cake. The price of a cake was 5 times as much as the price for a giant cookie. Find the price for each item at the bake sale
Answer: Cost of a giant cookies = $1.39
Cost of a cake= $6.95
Cost of a pie= $4.95
Step-by-step explanation:
Let price of a giant cookie = x
Then,
price of a cake = 5x
Price of a pie = 5x-2
Cost of 30 cakes, 40 pies, and 200 giant cookies = 30 (5x)+40(5x-2)+200x
= 150x+200x-80+200x [By distributive property a(b+c)=ab+ac]
= 550x-80
Given cost = $684.50
[tex]\Rightarrow\ 550x-80=684.50\\\\\Rightarrow\ 550x= 684.50+80[/tex]
[tex]\Rightarrow\ 550x=764.50\\\\\Rightarrow\ x=\dfrac{764.50}{550}\\\\\Rightarrow\ x=1.39[/tex]
Cost of a giant cookies = $1.39
Cost of a cake = 5 x $1.39 = $6.95
Cost of a pie = $6.95 - $2 = $4.95
Officer Brimberty wrote 16 tickets for traffic Violations last week, but only 10 tickets this week. What is the percent decrease? Give your answer to the nearest tenth of a percent The percent decrease is
Answer:
31.25%
Step-by-step explanation:
2, 6,10,...
Find the 39th term.
the answer is 154 count by 4's
Step-by-step explanation:
14,18,22,26,30,34,38,42,46,50,54,58,62,66,70,74,78,82,86,90,94,98,102,106,110,114,118,122,126,130,134,138,142,146,150,154,158,162
Answer:
the answer is 154
Step-by-step explanation:
you add 4 every time
A small business has three employees who decorate pastries. Carlotta earns $13 per hour and decorates
19 pastries each hour. James earns $16 per hour and decorates 23 pastries each hour. Melissa earns $11
per hour and decorates 15 pastries each hour (she’s a new hire). In one week, the employees worked a
total of 100 hours, decorated 1868 pastries, and earned a total of $1316 in wages.
Define your variables and write a system of 3 equations
Find the missing factor.
80 X
640.000
we want to factor the following expression:
x^4+10x+25
which pattern can we use to factor the expression?
U and V are either constant integers or single-variable expressions.
Answer:
We can't use any of the patterns.
Step-by-step explanation:
The segments shown below could be a form triangle.
Answer:
false
Step-by-step explanation:
Pythagoras. 4^2 x 3^2=25 square root of 25 =5. B should be 5 for this to make a triangle
Simplify i38.
i
−1
−i
1
The value of ( i )³⁸ will be equal to -1. The correct option is B.
What is an expression?Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given expression ( i )³⁸ is the I value of the complex number. The I value of the complex number is equal to the square root of the negative one. The expression will be solved as below:-
( i )³⁸ = (√-1)³⁸
( i )³⁸ = -1
Therefore, the value of ( i )³⁸ will be equal to -1. The correct option is B.
To know more about an expression follow
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Finish the sentence:
Renee is a sales associate at a store. She earns $80 a week plus a 15% commission on her sales. Last week, she sold $200 worth of items. What is the total amount Renee earned for the week? How much did she earn from commission?
Renee earned a total of $ for the week. The amount she earned from commission was $ .
Answer:
$110 for the week
$30 commission
Step-by-step explanation:
How many more games will it take until tom and will have scored the same number of points
Answer:
Both players will need to play 7 more games to have the same score.
Step-by-step explanation:
Will makes 18 points per game and Tom makes 21 points per game. Will has a total of 483 points and Tom has 462 points.
We have to calculate the number of games Tom and Will need to play for them to have the same number of points. Since Tom makes more points per game, we're sure it will eventually happen.
Let's call x to the number of games that both players will play. Will will have a number of points equal to:
W = 483 + 18x
And Tom will have:
T = 462 + 21x
For both number of games to be equal, the equation to solve is:
483 + 18x= 462 + 21x
Move 18x to the right side and 462 to the left side:
483 - 462 = 21x - 18x
Operating:
21 = 3x
x = 21 / 3 = 7
Thus, both players will need to play 7 more games to have the same score.
Round 2,329.48 to the nearest hundred
Answer:
2300
Step-by-step explanation:
Andrew purchased some drinks and some chips. Each bag of chips cost $2.00 and
each drink cost $2.50. The expression 2x + 2.5y gives the total amount of money
spent by Andrew on chips and drinks. What is the meaning of the term 2.5y?
Answer:
2.5y=amount spent on drinks
Step-by-step explanation:
If chips are $2 and drinks are $2.50 and we do not know how many he bought of each, we put this into an equation which is
2x+2.5y
x=number of bags of chips while the 2 is two dollars per bag
so, if he bought 2 bags of chips 2(2)= $4 spent.
y= number of drinks and 2.5 is $2.5 per drink, so if he bought 4 drinks:
2.5(4)= $10 spent on drinks.
|-4| + |-5| i need help!!!
Answer:
9
Step-by-step explanation:
The absolute value of any number is just its distance from 0.
-4 is 4 away from 0, so its absolute value is 4.
-5 is 5 away from 0, so its absolute value is 5.
Therefore, the equation is basically just asking what is 4 + 5, which is 9 :D.
Answer:
9
Step-by-step explanation:
The bars around the two numbers imply that it wants you to find the absolute value. Absolute value is the distance a number is from zero since distance is always positive to find the answer just make the number positive. Following this rule l-4l=4 and l-5l=5. Then add them together 4+5=9.
The histogram gives information about the waiting time, in minutes, experienced
by patients at a dental surgery. 3.24
a) Complete the frequency table
for this information.
(2)
Time (t minutes)
Frequency
2.4
0
24
30
40
Frequency density
6
60
70
0.8
b) Find an estimate for the lower
quartile of the waiting times of
patients at this surgery.
0
minutes (2)
20
40
60
Time (t minutes)
80
100
Total marks: 4
Answer:here
Step-by-step explanation:
Answer:
The answer to part b is 31
