Answer:
Step-by-step explanation:
The first thing you need to do is find the volume.
r = 2cm
h = 7 cm
pi = 3.14
V = pi*r^2 *h
V = 3.14 * 2^2 * 7
V = 3.14 * 4 * 7
V = 87.92 cm^3
Next find the mass using the density formula
Density = mass / volume
Density = 3.1 grams / cm^3
Volume = 87.92 cm^3
3.1 = m / 87.92 Multiply both sides by 87.92
3.1 * 87.92 = m
m = 272.55
Note:
Technically There should be no decimal places. 3.1 is only 2 significant digits. The answer should be 270 grams.
Which of these letters could represent a number greater than the square root of 82 but less than square root of 99
Answer:
point N
Step-by-step explanation:
the closest perfect square to 82 is 81 which is 9
the closest perfect square to 99 is 100 which is 10
possible choices are N, P, or Q
since 81 is very close to 82, the answer is going to be very close to 9
answer would be point N
Solve the system of equations by adding or subtracting.
{-x-2y = 3
( 3x + 2y = 15
The solution of the system is
Answer:
x=9, y=-6
Step-by-step explanation:
you can add to cancel out the y: -x+3x=18. x=9. You then plug x back to get the value for y.
Let f(x) = x^2 − 5. Find f(-3)
Answer:
f(-3)=4
Step-by-step explanation:
Substitute x=-3 into the function
f(-3)=(-3)^2-5
f(-3)=9-5
f(-3)=4
Answer:
f(-3) = 4
Step-by-step explanation:
f(x) = x² - 5
f(x) is a function with input x, meaning it is an expression which has terms involving x;
x is a variable and can be considered a space holder;
f(-3) is the function with input -3, this simply means replacing the space holder, i.e. x, with -3;
f(-3) = (-3)² - 5
f(-3) = 9 - 5
f(-3) = 4
I need help for these two
Im3
how do you multiply 2 different fractions?
Answer:
To multiply fractions: multiply numerator by numerator and denominator by denominator
e.g : 1/2 × 1/2
= 1/4
Indicate operations and simplify: 12a+7a-(5a+12)
Answer:
14a - 12
Step-by-step explanation:
12a + 7a - (5a + 12)
(12a + 7a - 5a) + (-12)
14a - 12
I hope this helps! :)
Answer: The answer should be 2(7a-6). Hope it helps.
Step-by-step explanation:
A rain barrel collects 440 gallons of water for every
inch of rainfall. How much did the barrel collect on
Thursday?
Can someone give me these answers
Answer:
Question 6:
⇒15 × 6 = 90
⇒1 × 8 = 8
⇒90 + 8 = 98 chairs
The total number of chairs required is 98.
Question 8:
Working hours of cinema per month= 120 hours
total hours worked by Leanne in September = 138 hours
per hour pay = £7
over time pay per hour = £9
how much did she get paid in September = ?
⇒138 hours - 120 hours = 18 hours
it means that out of 138 total hours she has worked, she worked overtime for 18 hours.
⇒120 hours × £7 = £840
she got paid £840 for working 120 hours
⇒18 hours × £9 = £162
She got paid £162 for working 18 hours additional
⇒£840 + £162 = £1002
Therefore,
Leanne is paid £1002 for working £138 in September.
hope that helps...
Please help This is due today! I will give crown to first correct answer!
Answer:
Use the given functions to set up and simplify
f (2). 0
Step-by-step explanation:
HELPPPPPPPPPpp THIS IS HARD. find the value of x
Answer:
x = 155°
Step-by-step explanation:
The sum of the angles in any triangle = 180°
1. The triangle with the right angle and the 35° angle: We know the acute angles of a right angle sum = 90°. So 35° + what angle = 90° ; the missing angle = 90° - 35° = 55°
You have a straight angle formed with the 60° + ?° + 55° that is equal to 180°. 60° + 55° + ? = 180; 115°+ ? = 180; ? = 65°.
Now "x" is any exterior angle which tells you that it is equal to the two remote angles. The two remote angles are 65° + 90° = x° ; x = 155°
Now
Sum of two Interiors =Exterior angles
[tex]\\ \tt\hookrightarrow 120+35=x[/tex]
[tex]\\ \tt\hookrightarrow x=155°[/tex]
Write the word sentence as an equation.
The sum of a number x and 4 equals 12.
An equation that represents this sentence is
PLEASE ANSWER
Answer:
x+4=12
Step-by-step explanation:
Read from left to right and write accordinlgly. Here, it says the sum of x and 4 (so we write x+4) equals 12 (=12)
need help asap. it's from the iready diagnostic.
Answer:
Darn I had one of those a few weeks ago, I'm so sorry if I'm wrong but I think it's option 3? I'd wait for someone else to answer though just it case I'm wrong. God bless!
o,my god if you do this 2 pages I will be done with my homework
please guys do it i belive in you
Answer:
1. 8% of 50 is 4
2. 95% of 40 is 38
3. 42% of 263 is 110.46
4. 110% of 70 is 77
5. 115% of 20 is 23
6. 130% of 78 is 101.4
7. 6.5% of 50 is 3.25
37. 15% of 50 is 7.5
38. 5% of 19 is 0.95
39. 8% of 275 is 22
I hope this helps! Can I plz have a Brainliest??
Step-by-step explanation:
The p-value for a one-sided t-test is 0. 10. If the test had been two-sided, what would the p-value have been?.
Considering the one-sided p-value, the p-value for a two-sided test would be of 0.20.
How to find the p-value of a test?It depends on the test statistic z, as follows:
For a left-tailed test, it is the area under the normal curve to the left of z, which is the p-value of z.For a right-tailed test, it is the area under the normal curve to the right of z, which is 1 subtracted by the p-value of z.For a two-tailed test, it is the area under the normal curve to the left of -z combined with the area to the right of z, hence it is 2 multiplied by 1 subtracted by the p-value of z, which means that the p-value for a two-tailed test is twice the p-value of a one-tailed test.In this problem, for the one-tailed test, the p-value is of 0.1, hence the p-value for a two-sided test would be of 0.20.
You can learn more about p-values at brainly.com/question/13873630
please help with domain and range
Answer:
domain (-3,0,2)
range (3,6,9)
Step-by-step explanation:
the domain is all the numbers on the x-axis or the input side and the range is all the numbers on the y-axis side or the output
Wha is the equation of the line?
Given f(x)=-5x+1f(x)=−5x+1, solve for xx when f(x)=6f(x)=6.
Answer:
Answer:
The coefficient of x is 6
Step-by-step explanation:
The two expressions are
(x)=-5x+1f(x)=−5x+1
and .
f(x)=6f(x)=6.
The sum of the two expressions is
f(x)=-5x+1f(x)=−5x+1(f(x)=6f(x)=6.)
When we group like terms the expression will be,
f(x)=-5x+1f(x)=−5x+1(f(x)=6f(x)=6.)=f(x)=-5x+1f(x)=−5x+1(f(x)=6f(x)=6.)
When we simplify the expression will now be
f−5x+1(f(x)=6.)
The coefficient of x is the constant behind x in the expression.
The coefficient of x is 3 therefore the answer is 3 .
Step-by-step explanation:
By definition of the substitution method, the value of x for the function f (x) = - 5x + 1 would be x = - 1.
Given that;
The function is,
f (x) = - 5x + 1
And, f (x) = 6
Now substitute the value of function f (x) = 6;
f (x) = - 5x + 1
6 = - 5x + 1
5x = 1 - 6
5x = - 5
x = - 5/5
x = -1
Therefore, the value of x is - 1.
To learn more about the function visit:
https://brainly.com/question/11624077
#SPJ3
whats 4+4???
PLEASE HELP!!
Answer:
8
Step-by-step explanation:
Answer:
.....8?
Step-by-step explanation:
1st grade math ._.
WILL GOVE BRAINLY IF CORRECT! ASAP!!
Answer:
7/8−6/11=29/88
Step-by-step explanation:
i used a calculator.
hope this helps :))
find the inverse of 5/9(F-32)?
Answer:
inverse of 5/9(F-32)
Step-by-step explanation:
** i will mark brainliest** Find the value of the variable in the parallelogram.
Parallelograms are quadrilaterals with parallel and congruent opposite sides
The value of the variable is 30
How to determine the value of the variableThe given parameters are:
RZ = 6x + 9
SW = 13x - 12
From the parallelogram, we have the following relationship between lengths RZ and SW
[tex]SW =2 * RZ[/tex]
So, we have:
[tex]13x - 12 = 2 * (6x + 9)[/tex]
Open brackets
[tex]13x - 12 = 12x + 18[/tex]
Collect like terms
[tex]13x - 12x = 12 + 18[/tex]
[tex]x = 30[/tex]
Hence, the value of the variable is 30
Read more about parallelograms at:
https://brainly.com/question/3050890
just need help please^^ for a friend
An equiangular octagon has four sides of length $1$ and four sides of length $\frac{\sqrt{2}}{2}$, arranged so that no two consecutive sides have the same length. What is the area of the octagon
If the corner cut has length 1, then each corner triangle has legs of length [tex]\dfrac1{\sqrt2}[/tex], and hence area [tex]\dfrac12\cdot\dfrac1{\sqrt2}\cdot\dfrac1{\sqrt2}=\dfrac14[/tex]. The original square then has side lengths [tex]\dfrac1{\sqrt2}+\dfrac1{\sqrt2}+\dfrac1{\sqrt2}=\dfrac3{\sqrt2}[/tex], so its total area is [tex]\left(\dfrac3{\sqrt2}\right)^2=\dfrac92[/tex]. Then subtract the triangles' areas from the square's area to get the octagon's area, [tex]\dfrac92-4\cdot\dfrac14=\dfrac92-1=\boxed{\dfrac72}[/tex].
Write 308 as a product of its prime factor
Answer:
Solution: Since, the prime factors of 308 are 2, 7, 11. Therefore, the product of prime factors = 2 × 7 × 11 = 154.
Step-by-step explanation:
exterior angle theorem
what is the value of u? I’m willing to give brainlist!!
If several frequency distributions are constructed from the same data set, the distribution with the widest class width will have the:.
When frequency distributions are constructed from the same data set, the distribution with the widest class will have the smallest classes.
What is a Frequency Distribution?This refers to a mathematical or statistical set of numbers or data which have been arranged to show the frequency of occurrence of each number that can be repeatedly observed.
The different types of Frequency Distribution are:
See the link below for more about Frequency Distribution:
https://brainly.com/question/1094036
When would two sine functions of the form
y = sin(x – h) that have different values for h have the same graph? Explain.
Answer:
The period of the function is 2pi, so every 2pi, the cycle will be again.
If the h-values differ by multiples of 2pi, the function will have the same graph.
edge 2022
hope it helps :)
mark brainliest!!
Answer:
[tex]2\pi[/tex]
Step-by-step explanation:
Since the sine function has a period of [tex]2\pi[/tex], that means the cycle of the wave repeats every [tex]2\pi[/tex] units, which shows that subtracting (or adding) [tex]2\pi[/tex] won't change the cycle pattern and frequency.
93 out of 96 students want pancakes and the rest want waffles. what is the ratio of the number of students who want pancakes to the number of students who want waffles?
Answer:
93:96
Step-by-step explanation:
or using a calculator its 97% of students. Or 93/96 which simplifies into 31/32
The DVD player has lost some popularity with the increase of streaming videos. In order to decrease their inventory of DVD players, a retail store puts their $88 DVD player on sale at 30% off. What is the sale price of the DVD player?
A. $26.40
B. $114.40
C. $52.80
D. $61.60
Answer: The answer is A. 30% of 88$ is 26.40.
Given that a=3, b=4 and c= -5 work out b(squared) - 2ac
