Answers
Answer:
22.5 mins
Step-by-step explanation:
To find what that video's length must be, subtract the previous videos' lengths from the requirement, 5 hours. (x is the video length of her fourth video)
7/8 + 1 1/4 + 2 1/2 + x = 5
To make adding these fractions easier, find a common denominator.
7/8 + 1 2/8 + 2 4/8 + x = 5
4 5/8 + x = 5
x = 3/8, or 22.5 minutes.
Answer:
[tex]\frac{3}{8} \text{ hours.}[/tex]
Step-by-step explanation:
Her first three videos totalled up to
[tex]\frac{7}{8} + 1\frac{1}{4} + 2\frac{1}{2}\\=\frac{7}{8} + \frac{5}{4} + \frac{5}{2}\\=\frac{7}{8} + \frac{5}{4} \cdot \frac{2}{2} + \frac{5}{2} \cdot \frac{4}{4}\\=\frac{7}{8} + \frac{10}{8} + \frac{20}{8}\\=\frac{7+10+20}{8}\\=\frac{37}{8}[/tex]hours. To meet the [tex]5 = \frac{40}{8}[/tex] hour goal the shortest fouth video she can make is [tex]\frac{40}{8} - \frac{37}{8} = \frac{3}{8}[/tex] hours, because if the fourth video was any shorter, she'd end up with less than [tex]\frac{37}{8} + \frac{3}{8} = \frac{40}{8} = 5[/tex] hours in total (this is called a proof by contradiction). We are now done.
Related Questions
how many centimeters are in 9,000 millimeters
Answers
Answer:
900 centemeters
Step-by-step explanation:
Answer:
9000 millimeters= 900 centimeters
Step-by-step explanation:
you have to divide the length value by 10, thats how you get your answer
i hope this helps. :)
Village lanes bowling alley charges $2.00 just to rent a pair of shoes and $3.50 for each game bowled. If you spend a total of $16, then how many games were bowled?
Answers
-2 -2
14=3.5x
/3.5 /3.5
4=x
4 games
The graph shown below represents a ladder leaning against wall the bottom of the latter is 4 feet from the wall in the top of the ladder reach is 20 feet above the ground what is the slope of graph (I’m so sorry I don’t have a picture)
Answers
Answer:
C.) -5
Step-by-step explanation:
The slope formula is rise/run, in other words, rise divided by run or the y variable divided by the corresponding x variable.
In this question, we are told that the y-value is "20 feet above" meaning this is the rise and the run is "4 feet from"
To find the slope all we have to do is divide 20 by 4 giving us 5. Since the ladder is going down we know that we have to place a negative sign before the slope giving us our final answer of -5
Did I get this correct? If not please help me!!!
Answers
Answer:
I thinck u did get it write ....
Step-by-step explanation:
WILL GIVE BRAINIEST
Answers
Answer:
nice fingers lol i cant see the whole problem
Step-by-step explanation:
A certain model car has a keypad with 5 numbers on the door. To open the door, 5 numbers must be entered in the correct
order and no number can be used more than once. What is the probability that someone could guess the correct code?
OA. Ito
OB.
OC.
OD.
Answers
Answer: A. [tex]\dfrac{1}{120}[/tex]
Step-by-step explanation:
Total digits on keypad = 5
According to permutation,
If repetition of digits is not allowed then the number of 5-digits passwords can be formed = 5!
= 5 x 4 x 3 x 2 x 1 [n!=n x (n-1) x (n-2)x ... x 1]
=120
The probability that someone guesses the correct code = [tex]\dfrac{\text{Number of correct codes}}{\text{Total possible codes}}[/tex]
[tex]=\dfrac{1}{120}[/tex]
Hence, the correct option is A.
Tell me everything you know
about slope!
Plzzzz help
Answers
Answer:
In mathematics, the slope or gradient of a line is a number that describes both the direction and the steepness of the line.
Step-by-step explanation:
A slope with a greater absolute value indicates a steeper line. The direction of a line is either increasing, decreasing, horizontal or vertical.
There are 240 students in the seventh grade, and 25% are in the Environmental Club.
How many students are in the Environmental Club?
Answers
180 students in the enviormental club
There are 60 students in the Environmental club.
What is a percentage?A ratio or value that may be stated as a fraction of 100 is called a percentage. And it is represented by the symbol '%'.
Given:
There are 240 students in the seventh grade,
and 25% are in the Environmental Club.
That means,
students are in the Environmental Club,
= 240 x 25/100
= 60
Therefore, 60 students are in Environmental club.
To learn more about the percentage;
https://brainly.com/question/24159063
#SPJ5
SOLVE THE INEQULITY 4X-7<5
Answers
Step-by-step explanation:
the answer is
4x-7<5
4x<12
x<3
The number of bacteria in a petri dish culture triples every two days. Initially there were 250 bacteria present. Which equation models the number of bacteria B after T days?
A. B=250•3^t+2
B. B=250•3^2t
C. B= 250•3^t/2
D. B=250•3^t^2
please only respond if you know the answer :)
Answers
Answer:
B
Step-by-step explanation:
B = 250 * 3^2t
Nine boys share 4 pizzas equally.What fraction of a pizza does each boy get?
Answers
Answer:
4/9
Step-by-step explanation:
Is this the answer to this question i need help
Answers
Answer:
No, A is
Step-by-step explanation:
You can tell by plugging in the numbers. 0 - 3(0) < 1 as 0 < 1.
============================================================
Explanation:
Let's check if choice C is the answer or not
We will plug in x = -2 and y = 1 into the inequality to get
y - 3x < 1
1 - 3(-2) < 1
1 + 6 < 1
7 < 1
That's a false statement since 7 is not smaller than 1. This means the first inequality is false when (x,y) = (-2,1). So we can rule out choice C. Choices B and D are similar stories.
---------------
It turns out that choice A is the answer because
y - 3x < 1
0 - 3(0) < 1
0 - 0 < 1
0 < 1
Which is a true statement. So (x,y) = (0,0) is one solution to this inequality.
I'll let you check the other answer choices. You should find them to be false
PLEASE ANSWER QUICK!!
in ms. renault's classroom, 3/5 of the students play chess. of the students who play chess, 5/6 also play checkers. if there are 30 students in her class, how many play chess and checkers?
Answers
Answer:
15, and this will help https://quizlet.com/333248903/mrkellymathscience-6th-grade-math-11-13-adding-subtra cting-and-multiplying-decimals-flash-cards/
Step-by-step explanation:
take out space
If the following cylinders shown below are similar, what is the value of x? A.3 B.5
C.10 D. 20
Answers
Answer:
it b
Step-by-step explanation:
Answer: 5
Step-by-step explanation:
evreything is in half
R4 = 74 what does R equal??????????????\
Answers
Answer:
R = 18.5
Step-by-step explanation:
Answer: 18.5
Step-by-step explanation: Divide 74 by 4
Juanita has saved 20% of the money that she needs to buy a new bicycle if she has saved $52 how much money does the bicycle cost?
Answers
what is (3z+1) + (5+7z)
Answers
the answer is:
10z+6
hope this helps :)
A letter from the word CONFIDENCE is chosen at random, then a card is drawn from a standard deck. What is the probability of getting a consonant, them a red card or ace.
Answers
Answer:
9/26
Step-by-step explanation:
Word : CONFIDENCE
Consonants in word : C, N, F, D, N, C = 6
Total alphabets = 10
Probability =required outcome /Total possible outcomes
Probability (consonants) = 6 /10 = 3/5
Number of red catds in deck = 26
Number of aces in a card deck = 4
Total number of cards = 52
P(red) or P(ace)
(4/52) + (26/52) = (4 + 26) / 52 = 30 / 52 = 15 / 26
P(getting a consonant, then a red card or ace)
(3 /5) * (15/26) = (3 * 15) / (26 *5) = 45/130 = 9/26
PLEASE ANSWER ALL QUESTIONS 69 POINTS WILL MARK BRAINLIST
Answers
Answer:
See belowStep-by-step explanation:
Proportional relationship formula is:
y = kxa) Use point (1, 3.5) to find k:
3.5 = k*1k = 3.5b) Unit rate is:
cm per minc) Point (8, 28) indicates:
Water level of 28 cm after 8 mind) x = 20, y =?
y = 3.5(20) = 70 cmfind the inequality by the graph
Answers
Answer:
[tex]y>\frac{1}{3} x - 3[/tex]
Step-by-step explanation:
So we first look at the dotted line in the graph, which is [tex]y=\frac{1}{3}x-3[/tex]. Next, we see that the blue area is the area above the line, so it should be [tex]y>\frac{1}{3} x - 3[/tex].
please help!! if you could show work too that would be amazing :))
Answers
Answer:
Was there suppose to be a attached image?
I need help please !! I'll give brainliest ♥
Answers
i have my answer i’m just trying to see if it’s right .
a)
b)
c)
d)
Answers
Answer:
Its d
Step-by-step explanation:
A is half B is more than half and C is less than half so it is D
Select the expression equivalent to 4(– 7) + 8.
Answers
Answer:
-20
Step-by-step explanation:
According to order of operations, multiplication comes before addition.
4(– 7) + 8 =
-28 + 8 =
-20
An expression equivalent to 4(– 7) + 8 would be:
8 + 4(-7)
This is true because of the commutative property which states that a+b=b+a
Answer:
-20
Step-by-step explanation:
It is very simple!
4x-7= -28
-28+8=20
PLSSSSS HELP I BEG YOU I WILL GIVE BRAINLIEST WHOEVER ANSWERS FIRAT AND CORRECT.!!!
Answers
Answer:
WHASTW THE QUESTION?
Step-by-step explanation:
Answer:
um ok first you spell that wrong and put firat
Step-by-step explanation:
1. Write the next three terms of the arithmetic sequence
1, 8, 15, 22, ...
Answers
Answer:
29,36,43
Step-by-step explanation:
Answer:
29
Step-by-step explanation:
the numbers are being added by 7
1 + 7 = 8
8 + 7 = 15
and so on
In which choice is y not a linear function of x?
(A) y = 2(x + 2) + 2x
В
2(y - 2) + 2y = 2x
©
y = 2(x + 2) - 2x
D
2(y - 2) - 2y = 2x
Answers
What is the solution to the equation x÷8−6=3?
A. x=1
B. x=24
C. x=48
D. x=72
30 POINTS TO THE RIGHT ANSWER AND BEST EXPLANTION.
Answers
Answer: D. x=72
Step-by-step explanation:
With the equation x/8-6=3 we can start solving by first moving the "-6"
x/8-6(+6)=3(+6)
x/8=9 <-- Rewrite equation after adding "6" to both sides
x/8(*8)=9(*8) <--- Multiply both sides by 8
x=72 <-- After multiplying, solution is found
Write the equation, in point-slope form, that contains the point (3, -6) with a slope of 2.
Answers
Answer:
y+6=2(x-3)
Step-by-step explanation:
y-y1=m(x-x1)
y-(-6)=2(x-3)
y+6=2(x-3)
What is the area of the rectangle below?
a. 16 units
b. 32 units?
c. 39 units
d. 52 units?
3 units
13 units
Answers
Answer:
39 units
Step-by-step explanation:
when its a rectangle just multiply the two side lengths together to get the answer