Answers
Answer:
x=8
Step-by-step explanation:
These two equation should add up to equal 180.
8x+13+12x+7=180
20x+20=180
20x=160
x=8
Answer:
8x+13+12x+7 =180
20x+20 =180
x= 8
Related Questions
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You gain: 25 points and brainliest
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Answer:
19)A 20)A 21)A 22)C 23)D 24)D 25)B 26) A 27)B
28) A 29)B 30)A 31) The surface area of Tina's shoebox is 184a..
u can check the answers if u wantt !! :)
A textbook company states that the average time a student needs to take a quiz from its book is 30 minutes with a standard deviation of 3 minutes. A teacher using the book is not sure that this is correct for her classes and wants to check. She collects data on 10 random students and finds that the average time to take the quiz was only 25 minutes. As a result, the teacher performs a two-tailed hypothesis test with a significance level of 5%. Which conclusion is valid based on the results of the test
Answers
Answer:
We conclude that her students, on average, do not take 30 minutes on the quiz, contrary to what the textbook company states.
Step-by-step explanation:
We are given;
Population mean; μ = 30 minutes
Population standard deviation; σ = 3 minutes
Sample size; n = 10
Sample mean; x¯ = 25
Significance level = 5% = 0.05
Let's define the hypotheses;
Null hypothesis; H0: μ = 30
Alternative hypothesis: Ha: μ ≠ 30
Let's find the test statistic;
z = (x¯ - μ)/(σ/√n)
z = (25 - 30)/(3/√10)
z = -5.27
From online p-value from z-score calculator attached using, z = -5.27, significance level = 0.05, two tailed hypothesis, we have;
p < 0.00001
This is less than the significance level, and so we will reject the null hypothesis and conclude that Her students, on average, do not take 30 minutes on the quiz, contrary to what the textbook company stated.
Answer:
A. Her students, on average, do not take 30 minutes on the quiz, contrary to what the textbook company stated.
What is 58 x 564 please tell me
Answers
Answer:
that is the answer 32,712
Step-by-step explanation:
your welcome.
sorry I times it by 54 instead of 58
6). The circle graph shows Allen's activities during 24 hours.
Allen's Activities
Listening to music 12%
Sleeping
35%
Playing video games 3%
Practicing drums 5%
Attending
school
30%
Playing tennis 10%
Eating 5%
How much more time in hours did Allen spend listening to music than playing tennis?
F 2.88 hours
G 0.48 hour
H 2.40 hours
J 0.12 hour
best explained answer gets most brainliest!
Answers
Answer:
G 0.48 hour
music 12% - tennis 10% = 2%
2% x 24 hrs = 0.48 h
Answer:
0.48
Step-by-step explanation:
At a children's archery camp, the percentage of target hits at different distances from the target for several campers were recorded.
The data is shown in the scatter plot below.
у
100).
80
60
.
Target Hits (%)
40
20
0 4
8 12 16 20
Distance from Target (ft)
Which interpretation can be made from this data?
OA.
ОВ.
There is a positive association between the distance from the target and the percentage of target hits.
There is a negative association between the distance from the target and the percentage of target hits.
There is no association between the distance from the target and the percentage of target hits.
OC.
OD. There is both a positive and a negative association between the distance from the target and the percentage of target
hits.
Answers
Answer:
its B
Step-by-step explanation:
PLSS HELPPP ME IM BEGGING ITS FOR A TEST DUE IN 5 MINS!!!!!!!!!!!!!!!!!!
Answers
Answer:
d
Step-by-step explanation:
Please help this is really hard
Answers
Answer:
The new pic will be like this , i think .
Step-by-step explanation:
Good night ^*^
Which expressions have products less than 3 3/5?
(Select all that apply)
Answers
1. 3,6>0,9
2. 3,6<4,725
3. 3,6>1,575
4. 3,6>0,54
The diameter of a spherical basketball is 10 inches.
What is the volume of the basketball2
Give the exact solution.
Volume
I NEED THE ANSWER FAST HELPP PLEASE
Answers
Answer:
Step-by-step explanation:
Rounded volume: 524 cubic inches.
Step-by-step solution:
The formula for the volume of a sphere is:
Where r is the radius of the sphere.
The radius is half the diameter, therefore it is r=10/2=5
We plug it into the formula and we get:
Then we get:
If we do it in our calculator we get 523.599 that rounded to the nearest whole is 524 cubic inches .
Find the area of the figure.
14 m
5 m
2 m
16 m
Answers
The difference between three times a number and 6 is 33.
I need to write an equation for this someone help!
Answers
Answer:
Step-by-step explanation:
3x-6 = 33
= 3x = 33 + 6
= 3x = 39
x = 13
Write the word sentence as an inequality.
A number b is at least −3.
Answers
Answer:
b >= -3
The symbol > = represents "greater than OR equal to".
PLS HELP ME!!!!! Students are selling raffle tickets for a school fundraiser. They collect $24 for every 10 raffle tickets they sell. Suppose M is the amount of money the students collect for selling R raffle tickets. Write an equation that reflects the relationship between M and R.
Answers
Answer: M=2.4R
Step-by-step explanation:
If 24 dollars are collected for every 10 tickets we can find the cost of each ticket like so...
24/10=2.4
so now we can set up our equation...
M=2.4R
this means we get M amount of money for R number of tickets sold at a rate of $2.40 each.
4x - 35 = 234
Solve for 'x'.
Answers
Answer:
X= 67.25
Step-by-step explanation:
4x-35=234
Add 35 to both sides
4x= 269
Divide both sides by 4
X= 67.25
Answer:
x = 67,25
Step-by-step explanation:
Here it is given that,
x is an unknown to know. Since we are intelligent students, we will bring the unknowns to the left limb, and the numbers known in the right limb.[tex]\:[/tex]
We can write this matematically as,
[tex]\rightarrow 4x - 35 =234[/tex]
Move the constant to the right,
[tex]\rightarrow 4x =234 + 35[/tex]
Add the numbers,
[tex]\rightarrow 4x =269[/tex]
Divide both sides of the equation by 4,
[tex]\rightarrow x =\frac{269}{4}[/tex]
We determine the value of x,
[tex]\rightarrow \underline {x=67,25}[/tex]
Help me please . . . . . . . . . . . . . Thanks
Answers
What’s the answer to this?!!!!!
Answers
Step-by-step explanation:
here
Use your answer from Part I to find the slope of a line going through each set of points. Then
describe the line as positive, negative, zero, or undefined. Show your work and explain your
answer.
A. (5, 7) and (-4,-2)
B. (1, 3) and (1, -10)
Answers
Answer:
Step-by-step explanation:
to find the slope of a line that passes for two given points we can use this formula (y2-y1)/(x2-x1). x and y inidcate the coordinates of the two points.
A (-2-7)/(-4-5) = (-9)/-9 = 1 (m is positive)
B (-10-3)/(1-1)) = the denominator is equal to zero, so the division is impossibile. This mean that m is undefined and the line is parallel to y axis
What is the slope and equation of a line parallel to the y-axis passing through point (-4,3)
Answers
Answer:
-4 is x and 3 is y
Step-by-step explanation:
Plz help me out PLZ!!!!
Answers
1.) 4x^3 + 12x^2 + 29x + 88 + 260x + 2/x^2 - 3x
2.) 2x^3 - 15x^2 + 45x - 133 + 407/x + 3
3.) -x^2 - 6x + 13 - 16/ x + 2
4.) 3x^3 - 16x^2 + 112x - 783 + 5479/ x + 7
5.) same thing as number 4
I hope this helps you :)
Answer ASAP PLS -
Angle PQR and angle TQV are vertical angles. The measures of the two angles have a sum of 100°. Write and solve an equation to find x, the measures of angle TQV.
Answers
good luck :’)
Amy is a local photographer. She charges $225 for a session and $15 for every print the customer
orders. Which of the equations below could represent the amount a photo session could cost?
A. y = 15x
B. y = 225x + 15
C. y = 225x
D. y = 15x + 225
Answers
PLZZZZ HELP THIS IS WORTH 40 POINTS PLZZZ
I’ll give extra points!!!
Answers
Answer:
1) 15
2) 10
3) 11
4) -4
5) -8
6) 12
7) 14
8) -6
Step-by-step explanation:
Substitute the values thats all lol, if u need a more detailed explanation just comment <3
What is a Proportional Relationship?
1. One apple costs 25¢. Determine each cost.
a) 2 apples
b) 3 apples
c) 4 apples
d) 6 apples
e) 9 apples
f) 12 apples
Answers
What is the value of the function
g(t) = 2(t-3)-4 for the input value t= 6?
Answers
Answer:
2
Step-by-step explanation:
Replace t with 6:
g(t) = 2(t-3)-4 becomes g(6) = 2(6-3)-4 = 2(3) - 4 = 6 - 4 = 2
A city built a new subway system in 2001. This graph shows the daily number of mass transit trips and the daily number of car trips people took in that city through 2007. What does the data show?
A) As the number of mass transit trips increase, so do the number of car trips.
B) The number of mass transit trips first exceeded the number of car trips in 2005.
C) The number of car trips has decreased every year since the subway system was built.
D)According to the data, the number of mass transit trips and the number of car trips do not appear to be related.
Answers
Answer:
C.
Step-by-step explanation:
This is the correct answer, because ever since the transit system was made, car rides went down and down.
Can you help me solve this pls
Answers
Answer:
use the Pythagorean therm = choice D
Step-by-step explanation:
find the square root of 3(squared) + 4(squared) = 5
then the square root of 5(square) + 12(squared) = 13
li writes the expression “half of the sum of 9 and a number.” Write an algebraic expression that is equivalent to Ali’s expression. Write a second algebraic expression that is different from, but equivalent to, your first expression. Respond in the space provided.
Answers
Answer:
Step-by-step explanation:
.......
Answer:
The expression will be : (x+9) /2
What is algebraic expression?An algebraic expression is an expression built up from integer constants , variables , and the algebraic operations.
Let us take the number to be : x
Now, ( half of the sum of 9 and a number ) will be : (x+9)/2
Dividing x and 9 with 2 we get,
the second expression which is different but equivalent to first will be :
=0.5 x + 4.5
Learn more about algebraic expression :
https://brainly.com/question/953809?referrer=searchResults
#SPJ2
plz help. need it done in 2 mins
Answers
Hope this helps :)
Can I have brainlyest plz
HELP PLEASE!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
The answer is A.) y=-500x+22,000
You cannot evaluate the square root of a __________________________. a. Positive number b. Negative number c. Zero d. Variable
Answers
Answer:
B, a negative number. negative numbers can't have square roots
Step-by-step explanation:
Hope this helps :)