The water level in an ocean bay changes at an average rate of 3 meters per hour. At this rate, how many hours would it take for the water level to change 12 meters?
please help
Answer:
4 hours
Step-by-step explanation:
You divide 12 by 3 and the answer is 4.
hope this helped
Find the error & explain why it is wrong: Megan wanted to solve this problem: given that sin 0=-divided2/2, and cos =divided3/2, find tan 0
What did she do wrong
Answer:
As seen on the picture, all the steps A to D are correct.
Step A. Identity is correctStep B. The fraction is correctStep C. Simplification is correctStep D. Solution is correctNote:
It could be more simplified by adding a step and multiplying both the numerator and denominator by √3: [tex]\frac{-\sqrt{2} }{\sqrt{3} } = - \frac{\sqrt{6}}{3}[/tex]Hal says the volume of the sphere shown below is 36 cm3. Find the correct volume, using 3.14 for π. Round to the nearest hundredth. What was Hal's likely error? Use the drop-down menus to explain your answer.
This question is incomplete
Complete Question
Hal says the volume of the sphere shown below is 36 cm³.Find the correct volume, using 3.14 for π. Round to the nearest hundredth. What was Hal's likely error? Use the drop-down menus to explain your answer.
Radius of the sphere = 3 cm
Answer:
a) The volume of the sphere = 113cm³
b) Hal's likely error was :
He used the wrong formula and did not make use of π = 3.14 in his calculation.
Step-by-step explanation:
a) The Volume of a Sphere = 4/3πr³
The radius of the sphere = 3cm
π = 3.14
The volume of the sphere = 4/3 × 3.14 × 3³
= 113.04 cm³
Approximately to the nearest hundredth = 113cm³.
b) Hal's likely error comes in two forms:
1) He used the wrong formula which is Surface area of the sphere(4πr²) in his calculation instead of the right formula which was the Volume of a Sphere(4/3πr³)
ii) Also he did not use π in his calculation.
This means Hal's calculation=
Surface Area of a Sphere = 4πr²
But Hal's used = 4r²
Where r = 3cm = 4 × (3cm)²= 36 cm³
This is wrong.
There is a prism with a pentagonal base the height is 8 cm the area of the pentagonal base is 30.5cm what is the volume of the prism
Answer:
244 cm³
Step-by-step explanation:
Step 1: Given data
Height of the prism with a pentagonal base (h): 8 cm
Area of the pentagonal base (A): 30.5 cm²
Step 2: Calculate the volume of the prism with a pentagonal base
We have a regular pentagonal prism, that is, the 5 sides of the base are equal and we know the area of the base and the height of the prism. We can calculate its volume using the following expression.
V = A × h
V = 30.5 cm² × 8 cm = 244 cm³
f(x)=3x2−12x+5, what would be the axis of symmetry for this function?
Answer:
x=2 is the axis of symmetry
Step-by-step explanation:
Can anyone help me with this plz
Sandy mixed together 9 gallons of one brand of juice and 8 gallons of a second brand of juice, which contains 48 percent real fruit juice. Find the percent of real fruit juice in the first brand if the mixture contained 30 percent real fruit juice. Which of the following equations could be used to solve this?
Group of answer choices
a(9)+48(8)17=0.30100
a(9)+0.48(8)17=30100
a(9)+0.48(8)a+0.48=30100
a(9)+0.48(8)17=30
Answer:
14 % pure juice comes from first brand
Step-by-step explanation:
Mixture:
17 gal 30% contains: 17x 30% = 5.10 gal pure juice
Second brand:
8 gal 48% contains: 8x40% = 3.84 gal pure juice
5.10 − 3.84 = 1.26 gal
1.26 gal is coming from 9 gal of first brand
The percentage of first brand is:
(1.26/9) x100 = 14 % pure juice.
HELPPPPP PLEASEEE!!!!
Answer:
X= - 3
Step-by-step explanation:
Multiply both sides by 2 to remove the division on the LHS
3X - 15=8X
Move 3X to the RHS
-15 =8X - 3X
-15= 5X
Divide both sides by 5
-3 =X
[tex]\boxed{c.\:x\:=\:-3}[/tex] ✅
[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}[/tex]
[tex] \frac{3x - 15}{2} = 4x \\ ⇢ 3x - 15 = 4x \times 2 \\ ⇢ 3x - 15 = 8x \\ ⇢ 3x - 8x = 15 \\ ⇢ - 5x = 15 \\ ⇢ x = \frac{15}{ - 5} \\ ⇢ x = - 3[/tex]
[tex]{ \bf{ \underbrace{To\:verify :}}}[/tex]
[tex] \frac{3x - 15}{2} = 4x \\ ⇢ \frac{3 \times (- 3) - 15 }{2} = 4 \times - 3 \\ ⇢ \frac{ - 9 - 15}{2} = - 12 \\ ⇢ \frac{ - 24}{2} = - 12 \\ ⇢ - 12 = - 12 \\ ⇢ L.H.S.=R. H. S[/tex]
Hence verified.
[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}[/tex]
In a right triangle, if the length of the hypotenuse is 10 and the length of one of the other sides is 6, what is the length of the third side? (Simplify Answer)
Answer:
8
Step-by-step explanation:
10^2=100 6^2=36 100-36=64 sqrt64=8
Write a proportion. What is x in the image above
Answer:
X IS A WORD TE-PAHADI
Step-by-step explanation:
Answer:
proportion: 6/8 = 3/x
x = 4
Step-by-step explanation:
6/8 = 3/x
6/2 = 3
8/2 = x
8/2 = 4
x = 4
please help me quick will give any award
A committee of 3 men and 4 women , is to be formed from 5 men and 7 women . How many different committees can be formed if :
A. a particular man must be on the seat
B .two particular must not be on the committee
C. There are no restrictions.
Topic : Permutation and combination
Answer:
Part AA particular man on the seat, then 2 men are out of 4:
4C2 = 4!/(4-2)!2! = 4*3*2/2*2 = 64 women out of 7:
7C4 = 7!/(7-4)!4! = 7*6*5*4!/3!4! = 35Total combinations:
6*35 = 210Part BOption 1. 2 men excluded
3 men out of 3 and 4 women out of 7
Total ways:
7C4 = 35 (as above)Option 2. 2 women are excluded
3 men out of 5 and 4 women out of 5
5C3*5C4 = 5!/3!(5-3)! * 5!/4!(5-4)! = 5*4/2 * 5/1 = 10Option 3. 1 man and 1 woman excluded
3 out of 4 men and 5 out of 6 women:
4C3*6C5 = 4!/3!(4-3)! * 6!/5!(6-5)! = 4*6 = 24 Part CNo restrictions, so the number of ways:
3C5 * 7C4 = 5!/3!(5-3)! * 35 = 4*5/2 * 35 = 10*35 = 3504. Elsa mixed 2 cups red paint with 1 cup blue paint to make purple paint. If she needs more purple
paint and uses 2 cups cup red paint, how much blue paint should she mix with it?
Solve for x if:
y = 7
x = 5y + 2
Solve for y if:
k = 2
8k - 3y 10
Solve for y if:
m = 3
y = 5x - 15
Solve for x and y if:
y = -3x + 9
y = 8x - 2
Answer:
Step-by-step explanation:
Please the number given in place of its letter in your equation
x = 5y + 2 if y = 7
x = 5*7 + 2
x = 35 + 2
x = 37
Apply the same principle to the others
write the five rational number which can be expressed has terminating decimal
Answer:
1/3
1/7
1/11
1/13
1/17
Step-by-step explanation:
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What is the equation of the circle with a diameter whose endpoints are (-3,-9) and (-7,1)?
Answer:
12
Step-by-step explanation:
Answer:
( x + 5 )² + ( y + 4 )² = 29
Step-by-step explanation:
Equation of the circle is
( x - h )² + ( y - k )² = r²
( h, k ) are coordinates of the center
~~~~~~~~~~~~~~~~~~~~~
Coordinates of the center of the circle are
( [tex]\frac{-3-7}{2}[/tex] , [tex]\frac{-9+1}{2}[/tex] ) = ( - 5 , - 4 )
d = 2√29 ⇒ r = √29
( x + 5 )² + ( y + 4 )² = 29
How many factors of 10 are in 1000, only answer are three, two, four
Answer:
Step-by-step explanation:
The number 1000 has prime factors: 2, 2, 2, 5, 5, 5.
The factors of 1000 include 1 and combinations of these numbers multiplied together (in any arrangement):
1, 2*2*2*5*5*5 or 1, 1000
1*2, 2*2*5*5*5 or 2, 500
1*2*2, 2*5*5*5 or 4, 250
. . . (You already did these)
But, a “factor” is “a number or quantity that when multiplied with another produces a given number or expression,” so you should consider the following:
How many 1's? How many 5's? How Many 2's? [and any others ...]
1 = 1 0 0
2 = 1 0 1
4 = 1 0 2
8 = 1 0 3
5 = 1 1 0
10 = 1 1 1
20 = 1 1 2
40 = 1 1 3
25 = 1 2 0
50 = 1 2 1
100 = 1 2 2
200 = 1 2 3
125 = 1 3 0
250 = 1 3 1
500 = 1 3 2
1000 = 1 3 3
There are 4*4=16 factors because there can be 4 (that is, 0-3) 5's and 4 (that is 0-3) 2's.
Answer:
the answer to the question is four
Hurry plz
In which quadrant is the point (-5, -4) in?
IV
I
III
II
Answer:
(-5,-4) quadrant is in III quadrant
Find the center and radius of a circle with the equation x² + y2 +6x–8y +16= 0.
a. (-3, 4);r=3
b. (3,-4);r=3
c. (-3, 4);r=9
d. (3,-4);r=9
Matthew has 30 Starbursts. Twelve are yellow and the rest are red. What is the ratio of yellow starbursts to red?
Answer is 2:3.
~Refer to the attachment for the solution.
Helloooo possess I need help as soon as possible
you dont need to show work
Answer:
Q1. A. 209.8
Q2. B. 313.6
Q3. 448.22 (not in ur options)
Step-by-step explanation:
What is the length of QR?
Answer:
B
Step-by-step explanation:
Someone please help me thank you
Answer:
It represents polynomial expression
2
Cameron has 6 pounds of pears.
A roasted-pears recipe requires
13 pounds of pears.
How many batches can he make?
Number sentence:
Solution:
Answer:
0.4 batches
Step-by-step explanation:
6 / 13 = 0.4
Write 4 ⅔ as a decimal.
Answer:
4.6667
Step-by-step explanation:
Answer:
4.66666667
Step-by-step explanation:
I was never sure about the amount 6's in it, but 2/3 is just .6666666... (so on) and 4 is a whole number so you'll just place it before like so: 4.66666..
PLEASE HELP ME ASAP Given the following polynomial function, find f(-1): 2x^3 - 3x^2+7x-10
F(-1)=?
Answer:-22
Step-by-step explanation:Just put the value -1 wherever there is x.
Answer:
f(-1) = -22
Step-by-step explanation:
f(x): 2x^3 - 3x^2 + 7x - 10
Repace x = -1
f(-1) = 2(-1)^3 - 3(-1)^2 + 7(-1) - 10
f(-1) = -2 - 3 - 7 - 10
f(-1) = -22
At a high school the average grade for the first semester for all subjects was 79.3. Based on this mean , the principal concludes that half of the grades were 79.3. Higher is her conclusion justified? Why or why not?
Answer:
That is incorrect. It would be appropriate if the median were 79.3, since the median is the value in the middle (when placing the data in order).
Conclusion of principal about mean is not justified. Mean represents the average of the data. For such conclusion mode is the correct option.
What is mean?
" Mean is defined as the ratio of the sum of all the given numbers in the data to the total numbers of numbers in the data. It is also known as average of the data."
What is mode?" Mode represents the value which occurs maximum numbers of times in the set of data."
According to the question,
Average grade for the first semester for all subjects = 79.3
Based on this mean
Principal concludes that half of the grades scored 79.3.
For example:
There are 5 students 3students score 100 , one student score 48 and another one got 50.
Mean of the class = [tex]\frac{398}{5}[/tex]
= 79.6
Here no student score 79.6.
Principal conclusion is not justified.
Mean is not the correct option to justify maximum number of students marks it is represented by mode.
Hence, conclusion of principal about mean is not justified. Mean represents the average of the data. For such conclusion mode is the correct option.
Learn more about mean and mode here
https://brainly.com/question/6813742
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Explain how making a table helps to compare two or more sets of data that have been presented in different ways.
Answer:
By easing the ranking and colerration of the data
Answer: a table is an organized way of displaying data
all data in a table has the same format
you can see how output of a data set changes by looking at a column
you can compare outputs of different functions that have the same input by looking at rows
Step-by-step explanation: edge 2022
A report states that the mean household income last year for a certain rural county was $46,200 and the median was $54,500. If a histogram were constructed for the incomes of all households in the county, would you expect it to be skewed to the right, to the left, or approximately symmetric
Answer:
skewed to the left
Step-by-step explanation:
A histogram is used to represent data graphically. the histogram is made up of rectangles whose area is equal to the frequency of the data and whose width is equal to the class interval. the frequency is usually on the vertical axis while the class interval is usually on the horizontal axis.
If the mean is greater than the median, the histogram would be skewed to the right
If the mean is less than the median, the histogram would be skewed to the left.
The mean in this question is $46,200 while the median is $54,500. So, the histogram would be skewed to the left