Answer:
The answer is 7
Step-by-step explanation:
Because 7 times 3 will give you 21, just divide 21 by 3.
Answer:
The answer is 7
Step-by-step explanation:
7+7+7=21
3×7=21
If you and a friend each toss two pennies at the same time, what is the probability that all four pennies will be tails?
A. 1/2
B. 1/4
C. 1/8
D. 1/16
E. 1/32
Answer:
1/16
Step-by-step explanation:
Probability helps us to know the chances of an event occurring. The probability that all four pennies will be tails is (1/16).
What is Probability?Probability helps us to know the chances of an event occurring.
[tex]\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}[/tex]
The probability of a penny getting a tail is 0.5 or (1/2), therefore, the probability of four penny getting a tail can be written as,
[tex]\rm Probability = \dfrac14 \times \dfrac14 \times \dfrac14 \times \dfrac14 = \dfrac1{16}[/tex]
Hence, the probability that all four pennies will be tails is (1/16).
Learn more about Probability:
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PLEASEEEE help me on 3 4 & 5. it’s due before midnight
Answer:
See below
Step-by-step explanation:
When changing from scientific notation to standard, you want to look at the exponent.
If exponent is positive, move decimal that many times to the right.
If negative, move to the left.
7.875 x 10^4
Exponent is positive so move to the right.
78750
4.53 x 10^-4
Exponent is negative so move to the left.
0.000453
8.9 x 10^-7
Exponent is negative so move to the left
.00000089
-3(-9v – 4) – 2(v – 2)
Answer:
V= -8/29
Step-by-step explanation
-3(-9v-4), -3 makes -9 and -4 positive cause neg times neg equals a positive
same goes for -2(v-2) so your new equation is 27v+12-2v+4
minus 12 from both sides which gives you -8 and add 2v on both sides which gives you 29v and you divided the two new numbers and you get -8/29
-what is the solution to this equation -16x=80
Answer:
-5
Step-by-step explanation:
You divide 80 by -16
(-2m^3n^4)^x=-8m^9n^12
Answer:
[tex]6m^{2} - 5mn - 6n^{2}[/tex]
Step-by-step explanation:
I hope this helps you :)
-8.68 divided -0.024
Answer:
-8.704
Step-by-step explanation:
hav a great day
Answer:
1085/3 = 361.7
Step-by-step explanation:
Expand −8.68/0.024 ≈361.666666667 by multiplying both numerator and the denominator by 1000.
8680/-24 ≈361.666666667
Reduce the fraction −8680/24≈361.666666667 to lowest terms by extracting and canceling out −8.
1085/3≈361.7
the sum of 32 and w
Please help ASAP
Answer:
Verbal expression; The sum of thirty -two and a number w
Algebraic expression ;32+w
Step-by-step explanation:
i needdd helppppppp plsss
Answer:
3
Step-by-step explanation:
3 - 6 = -3Plug -3 in: [tex]-\frac{12}{-3} + (-1)^{3}[/tex] Simplify the fraction. Two negatives equal a positive. It should now look like this: [tex]\frac{12}{3} + (-1)^{3}[/tex] Simplify even more. Divide 12 by 3, and change -1 to a positive by removing the plug sign: [tex]4 - 1^{3}[/tex] [tex]1^{3} = 1[/tex] Plug 1 in: 4 - 14 - 1 = 3I hope this helps!
What is the maximum number of rectangular blocks measuring 2 by 3 by 4 that can
fit into a box measuring 12 by 21 by 40?
Volume of small box :
[tex]v=l\times b\times h\\\\v=2\times 3\times 4\\\\v=24\ units^3[/tex]
Volume of big box :
[tex]V=L\times B\times H\\\\V=12\times 21\times 40\\\\V=10080\ units^3[/tex]
Number of small boxes that can fit into bigger box :
[tex]n=\dfrac{V}{v}\\\\n=\dfrac{10080}{24}\\\\n=420[/tex]
Therefore , 420 such boxes can fit .
Hence , this is the required solution .
6)
You and your family attend your brother's championship baseball game. Between innings you decide to go to the snack stand. You
go to the snack stand with $15 and find that sodas are $2.50 and that popcorn is $3.75. Write an inequality that models the
number of sodas you can buy if you get a bag of popcorn too. What is the maximum number of sodas you can buy in this situation?
Math
Answer:
..2.50x + 3.75x = 15..
Step-by-step explanation:
i think
I
1
The square root of 5 will be classified as what according to the real
number system?
*
Real, irrational
Real, rational, integer
real, rational, integer, whole number
real, rational, integer, whole number, natural number
real, rational, irrational, integer, whole number, natural number
Answer:
irrational number
Step-by-step explanation:
The square root of 5 belongs to a long list of irrational algebraic number. It has been categorized in such list because the square root of 5 cannot be expressed as a fraction and has an infinite number of
want to make confetti. In order to get the right balance of ingredients for their tastes they bought 2 pounds of paper hearts at $ 3.42 per pound comma 2 pounds of sparkling stars for $ 3.93 per pound comma and 5 pounds of shiny coils for $ 2.53 per pound. Determine the cost per pound of the confetti.
Answer:
$3.039
Step-by-step explanation:
Step 1
They bought 2 pounds of paper hearts at $ 3.42 per pound
1 pound = $3.42
2 pounds =
2 × $3.42
= $6.84
2 pounds of sparkling stars for $ 3.93 per pound
1 pound of sparking stars = $3.93
2 pounds =
$3.93 × 2
= $7.86
5 pounds of shiny coils for $ 2.53 per pound.
1 pounds of shiny coils = $2.53
5 pounds =
5 × $2.53
= $12.65
Step 2
We find the total cost of the materials
Total cost of Materials that make up the confetti = Cost of paper heart + Cost of sparkling stars + Cost of shiny coils.
= $6.84 + $7.86 + $12.65
= $27.35
Step 3
Total pounds of materials bought = 2 pounds + 2 pounds + 5 pounds
= 9 pounds
Step 4
The cost per pound of confetti = Total cost of the materials bought/ Total pounds of materials
= $27.35/9
= $3.0388888889
Approximately ≈ $3.039
The cost per pound of the confetti = $3.039
The cost per pound of the confetti is $3.04
Total cost :Given that, they bought 2 pounds of paper hearts at $ 3.42 per pound.
The cost of 2 pounds of paper hearts is, [tex]=2 *3.42=6.84[/tex]
the 2 pounds of sparkling stars for $ 3.93 per pound
The cost of 2 pounds of sparkling stars is, [tex]=$3.93 * 2=7.86[/tex]
the 5 pounds of shiny coils for $ 2.53 per pound.
The cost of 5 pounds of shiny coils is, [tex]=5 * $2.53=12.65[/tex]
Total cost of confetti is,
[tex]= $6.84 + $7.86 + $12.65=27.35[/tex]
Total pounds of materials bought ,
[tex]=2+2+5=9pounds[/tex]
The cost per pound of confetti is,
[tex]=\frac{27.35}{9}=3.04[/tex]
The cost per pound of the confetti is $3.039
Learn more about the total cost here:
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Khloe drove 204 miles in 4 hours. If she continued at the same rate, how long would
it take to travel 765 miles?
Answer:
15 hrs.
Step-by-step explanation:
204/4 = 51 miles per hrour
765/51 = 15 hrs.
Answer:
15
Step-by-step explanation:
I ad this on my hw last week got it right
y=1\2x+3. y=5. pls help solve by substitution .
Answer:
x=4
Step-by-step explanation:
y=1/2x+3....equation 1
y=5....equation 2
Sub equation 2 in 1:-
5=1/2x+3
2=1/2x
x=4
X-5(x-1)=x-(2x-3) what does it equal
Answer:
[tex]x = \frac{2}{3} [/tex]
Step-by-step explanation:
[tex]x - 5(x - 1) = x - (2x - 3) \\ x - 5x + 5 = x - 2x + 3 \\ x - 5x + 2x - x= 3 - 5 \\ - 3x = - 2[/tex]
Divide both sides of the equation by -3
[tex] \frac{ - 3x}{ - 3} = \frac{ - 2}{ - 3} \\ x = \frac{2}{3} [/tex]
Which table has a constant of proportionality between y and x of 8/5
Answer:
Table 1
Step-by-step explanation:
Constant of proportionality is simply the ratio of y to x. In each of the given tables, the second column is y and the first is x.
Table 1:
4 32/5
10 16
11 88/5
Let's find the constant of proportionality for each row:
R1: (32/5) / 4 = 8/5
R2: 16/10 = 8/5
R3: (88/5) / 11 = 8/5
Thus, since this matches the requirements and all three rows have the same constant, Table 1 is the answer.
If you check the other two tables in the same way, you'll see that neither has a constant of proportionality of 8/5.
Hope this helps!
Answer:
Table 1
Step-by-step explanation:
I just did it on Khan Academy
Felicia took out a $5,000 loan to buy a car. If the interest is compounded annually at a rate of 11%, how much will she pay in all?
PLEASE HELP
Answer: 550
Step-by-step explanation: 5,000x11%=550
160+3x=195-2x what is the answer
Answer:
x = 7
Step-by-step explanation:
160+3x=195-2x
Add 2x to each side
160+3x+2x=195-2x+2x
160 +5x = 195
Subtract 160 from each side
160+5x-160 = 195-160
5x = 35
Divide by 5
5x/5 = 35/5
x = 7
Donovan spent 2/15 hour walking to the mailbox, 1/6 hour walking to the library, and 2/10 hour walking to the park. Which took Donovan the longest amount of time to walk to? Explain.
Answer:
The walk to the park took the longest amount of time
Step-by-step explanation:
In this question, we want to find the location that took Donovan the longest amount of time to work.
We should recall that an hour is 60 minutes
So time spent walking to the mailbox would be 2/15 * 60 = 8 minutes
Time spent walking to the library would be 1/6 * 60 = 10 minutes
Time spent walking to the park = 2/10 * 60 = 12 minutes
So as we can see, the distance taking the longest amount of time to walk is the Park which took a total of 12 minutes
20=10-2y+4+4y what does y equal
Answer:
y = 3
Step-by-step explanation:
[tex]10-2y+4+4y+20[/tex]
Combine like terms
[tex]2y+14=20[/tex]
Move all terms not containing y to the right side of the equation.
[tex]2y=6[/tex]
Divide both sides by 2
y = 3
Plz mark me brainliest!
It's ok if u don't...lol
I hope this helped!!
can someone please help it’s for dance class not mathematics
While on vacation, you rent a bicycle. You pay $9 for each hour you use it. It costs $5 to rent a helmet while you use the bicycle.
Answer:
[tex]Rental\ Cost = 9 n + 5[/tex]
Step-by-step explanation:
Question is incomplete; See Attachment
Required
Complete the table
To complete the table, we simply substitute n for 1,2 or 3
So: The rental cost, when the hours is n is as follows;
[tex]Rental\ Cost = 9 * n + 5[/tex]
[tex]Rental\ Cost = 9 n + 5[/tex]
Your temperature is 99 degrees during first period. By 7th period,your temperature is 102 degrees. How many degrees did your temperature change? Should you be at school.?
Given :
Temperature at first period , [tex]T_1=99^oF[/tex] .
Temperature at seventh period , [tex]T_7=102^oF[/tex] .
To Find :
The change in temperature .
Solution :
We know , change in temperature is given by the difference between final and initial temperature .
[tex]\Delta T=T_7-T_1\\\\\Delta=(102-99)^oF\\\\\Delta=3^oF[/tex]
So ,the change in temperature is [tex]3^oF[/tex] .
Now , the average body temperature of human body is [tex]98.6^oF[/tex] and [tex]100.4^oF[/tex] is considered a fever .
Therefore , we should not be in school and take rest .
Hence , this is the required solution .
Help please!!! Thank you
Answer:
multiply 45×20×15
Step-by-step explanation:
you can use calculator
Lua has a red ribbon that is 2 1/12 inches long she has a blue ribbon that is 4 times as many inches long. how many inches long is the blue ribbon
Answer:
The length of the blue ribbon is approximately 8.333 inches
Step-by-step explanation:
The given information are as follows;
The given length of the red ribbon = 2 1/12 inches
The length of the blue ribbon is given as 4 × The length of the red ribbon
Therefore;
The length of the blue ribbon = 4 × 2 1/12 inches = 25/3 inches = 8 1/3 inches
The length of the blue ribbon = 8 1/3 inches ≈ 8.333 inches.
Answer:
8 1/3 inches
Step-by-step explanation:
Micheal is 5 years older than Rui Feng and Vishal is thrice as old as Micheal if Rui Feng is p years old, find i) Michael's present age, ii) Vishal's present age, ii) the sum of there age in 6 age years time, iv) the sum of their ages 3 years ago.
Answer:
Michael's present age = p + 5
Michael's present age = 3p + 15
Sum of there ages 6 year age = 5p + 38
Sum of there ages 3 year ago = 5p - 11
Step-by-step explanation:
Assume;
Age of Rui Feng = x
Age of Micheal = x + 5
Age if Vishal = 3[x+5]
Given:
Age of Rui Feng = P
Computation:
Michael's present age = Age of Rui Feng + 5
Michael's present age = p + 5
Vishal's present age = 3[p + 5]
Michael's present age = 3p + 15
Sum of there ages 6 year age = [p + 6] + [p + 5 + 6] + 3[p + 5] + 6
Sum of there ages 6 year age = 5p + 38
Sum of there ages 3 year ago = [p - 3] + [p + 5 - 3] + 3[p + 5] - 3
Sum of there ages 3 year ago = 5p - 11
Solve the equation for the variable specified. df + 10h = 3 Solve for d. A. d 3= 10h f B. d. 3- 10h f C. d = 3 - 102 D. d = f(3 – 10h)
Answer:
Step-by-step explanation:
d= (3-10h)/f
Compare your response to the sample response. Which of these did your response include? Check all of the boxes that apply.
[] The real number is on the number line, but the complex number is in the complex plane.
[] Both are distances.
[] Both are positive values.
[] The distance formula or the Pythagorean theorem is used to calculate the absolute value of a complex number.
Answer:
A,B,C: The real number is on the number line, but the complex number is in the complex plane.
Both are distances.
Both are positive values.
Step-by-step explanation:
took the test
Answer:
1, 2, and 3
Step-by-step explanation:
PLEASE HELP! oooooo
Answer:
The missing value is 41.
Step-by-step explanation:
If r= 3c+5 you plug in the 12, which is c, and the equation becomes r= 3x12+5. 3x12= 36, and 36+5= 41.
Answer:
41
Step-by-step explanation:
because 1=3 so 12=41
hope that helped!
Explanation:
10. Jack and Jill were working on their homework together but ended up with two different
answers to the same problem. The problem asked for a new line, parallel to y=2x+3, and
containing the point (-2,-2). Who got the problem correct? Explain your reasoning?
Jack:
y-2 = 2(x - 2)
y-2 = 2x - 4
y = 2x - 2
Jill:
y + 2 = 2(x + 2)
y + 2 = 2x + 4
y = 2x + 2
Answer:
Explanation:
Step-by-step explanation:
Hey there!
Firstly we need to find an equation of the line passing through point (-2,-2).
Now,
The equation of a st.line passing through point (-2,-2) is,
[tex](y - y1) = m1(x - x1)[/tex]
Now, putting the values,
[tex](y + 2) = m1(x + 2)[/tex]
It is first equation.
Now, another equation is,
y= 2x+3
Comparing, the equation with y = mx+c.
slope (m2)= 2
As per the condition of parallel lines,
m1=m2= 2
Putting, the values of m1 in equation (i)
(y+2)= 2(x+2)
y= 2x+2....is the equation.
Therefore, Jill's equation is correct answer.
Hope it helps...