Answer:
You would have to add 4 blue marbles
Step-by-step explanation:
there are a total of 12 marbles, 4 of them being blue.
If you add 4 blue ones, there would be a total of 16 marbles and 8 of them would be blue.
8/16 = 1/2
Therefore, 4 blue marbles need to be added for the chance to draw one to be 1/2 or 50%
Answer:
Step-by-step explanation:
Since there is 1 green, 2 yellow, 4 blue, and 5 red we start with 12 marbles. For the probability of picking a blue to be 1/2 we must satisfy.
(b+x)/(12+x)=1/2. (Where x is the number of blue marbles added)
2(b+x)=12+x
2b+2x=12+x
2b+x=12
x=12-2b, since we started with 4 blue marbles
x=12-2(4)
x=12-8
x=4
So we would need to add 4 blue marbles to make the probability of picking a blue 1/2.
At a bake sale, the cost, C or buying n pies is C = 7n. If one customer buys $84
worth of pies, how many did they buy? Use proper solution form.
C = 7n
fill in the missing numbers and you get
84 = 7n
which means you can divide 84 by 7 to get n
84/7 = n
n = 12
12
Answer: 12 pies
Step-by-step explanation:
C=7n
C=7(12)
C=84
Customer bought 12 pies
Please hurry, thank you!!!
What is the value of (-1/2)^-4?
1. -16
2. -1/16
3. 1/16
4. 16
Number One is wrong.
can anyone help? plz?
Answer:
Going down in order:
0.04
0.2
1
5
25
Answer:
0.04
0.2
1
5
25
Step-by-step explanation:
So, you get your calculator, 5 to the -2 power, 5 to the -1 power, 5 to 0 power, 5 to the 1st power, 5 to the 2nd power
5c+12=11c+16-6c
Solve
Answer:
No solution.
Step-by-step explanation:
Nothing can be further done
if RG = 4X+12 and HI = 10x-15, then x =
write standered form equation for the circle center (-7,4)
Answer:
Step-by-step explanation:
Gggg
9 more than n squared is 11 less the product of 5 and n
15203 + 10x2 - 183 – 12
O 3 (5.22 – 6) (2 – 2)
O (522 – 6) (3x + 2)
0 (52+ 6) (3x + 2)
o (582 – 6) (522 +2)
Answer:
the second one!
Step-by-step explanation:
Rhonda has 3/4 of her book left to
read. If she reads another 1/4 of the
book, then how much will she have left
to read.
Answer:
none. she will be finished.
Step-by-step explanation:
3/4 + 1/4 =1
Can someone help please?
Answer:
2.48
Step-by-step explanation:
Is it ever possible for adjacent angles to also be vertical? Why or why not?
Yes
Step-by-step explanation:
Because adjacent angles are vertical angles since they both have intersecting lines
- 4x2
+10
+
2x2–5x -7
Answer:
−2x^2−5x+3
Step-by-step explanation:
simplify
−4x^2 + 10 + 2x^2 −5x −7
= −4x^2 + 10 + 2x^2 + −5x +−7
combine like terms:
= −4x^2 + 10 + 2x^2 + −5x + −7
= (−4x^2 + 2x^2) + (−5x) + (10+ −7)
= −2x^2 + −5x + 3
Answer:
-2x^2-5x+3
Step-by-step explanation:
-4x^2+2x^2=-2x^2 10-7=3
If 3x-7=5x, what is 6x?
Answer:
6x = - 21
Step-by-step explanation:
Given
3x - 7 = 5x ( subtract 3x from both sides )
- 7 = 2x
Then
6x = 3 × 2x = 3 × - 7 = - 21
(3,-6) and (-2,-4)
Find the slope
Answer:
m=-2/5
Step-by-step explanation:
m=y2-y1/x2-x1
m=-4-(-6)/-2-3
m=-4+6/-5
m=-2/5
Answer:
Hey mate!
Pls refer to the image attached below for ur answer.....
Hope it helps!
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Help me plz :((( khan academy
Answer:
[tex]x=30\\[/tex]
Step-by-step explanation:
Answer:
x = 30
Step-by-step explanation:
[tex]\frac{45}{27} = 1.67\\[/tex]
1.67 x 18 = 30.06
round to the nearest whoeo number = 30
What is the reason for each step in the solution of the equation?
2x=−4(x−3)
Drag and drop the reasons into the boxes to correctly complete the table.
hepl will give branliest
Answer:
1
I THINK I GOT IT OMG THAT WAS SO HARD
Answer:
z = 5
Step-by-step explanation:
[tex]\frac{4x^2y^7}{8x^3y^2} = \frac{y^z}{2x}[/tex]
It can be also written as -
[tex]\frac{2^2 \times x^2 \times y^7}{2^3 \times x^3 \times y^2} = \frac{1 \times x^0 \times y^z}{2 \times x^1 \times y^0}[/tex]
Using law of exponents , lets solve this.
[tex]=> 2^{(2-3)} \times x^{(2-3)} \times y^{(7 - 2)} = \frac{1}{2} \times x^{(0-1)} \times y^{(z-0)}[/tex]
[tex]=> 2^{-1} \times x^{-1} \times y^{5} = 2^{-1} \times x^{-1} \times y^z[/tex]
[tex]=> \frac{y^5}{2x} = \frac{y^z}{2x}[/tex]
[tex]=> y^z = y^5[/tex]
[tex]=> z = 5[/tex]
A cylinder has a height of 4 yards. Its volume is 452.16 cubic yards. What is the radius of the cylinder?
Answer:
Step-by-step explanation:
V = π times r^2 times h (height)
452.16 = 3.14 times r^2 times 4
Multiply 3.14 times 4
452.16 = 12.56 times r^2
Divide 452.16 by 12.56.
452.16 / 12.56 = 36
36 = r^2
The square root of 36 is 6.
So the radius of the cylinder is 6 yards^3.
Water is building up in a bathtub. After 3 minutes there are 12 gallons of water and after 5, there are 24 gallons of water. What is the average rate which water is entering the bathtub from t=3 to t=5 minutes? What is the average rate? Show work.
Answer:
i think it's 15 gallons
13
A 14-foot ladder is set up 4 feet from the base of a building. How far up the building does the ladder reach? Round your
answer to the nearest tenth of a foot.
A 13.4 feet
B
14.6 feet
16.5 feet
D 18.0 feet
Answer: A 13.4
Step-by-step
a^2 + b^2= c^2 4^2 + b^2 = 14^2 16+ b^2= 195 b^2= 180 b= square root of 180 b= 6 square root of 5 or 13.42
Find the value of x.
Answer:
x= 48
exterior angle theorem
-12+48 = 36
48x3= 144
36+134= 180
For 5 months Tomas buys 4 boxes of crunchy granola bars and 3 boxes of chewy granola bars for his family.
Crunchy bars come in x bars and chewy granola bars come in y bars. Which two expressions can be used to
show the total number of granola bars Tomas buys.
x bars <4> and y bars come in <3>
Answer:
5(4x + 3y) = 20x + 15y
Step-by-step explanation:
The matter of months in which in this case is 5 months is the coefficient.
The amount of boxes per month is important information. We don't know how many bars are in each box. EACH is a key word for multiplying. If we want to know quickly how many bars are in 4 boxes (or 3) of the granola bars. We can simply multiply the amount of bars for each box with the amount of boxes. Since we don't know the amount of bars there are in each box we are going to use a variable. so it would look like this- 4x + 3y BUT we need to add the coefficient. Now rewrite the expression. 5(4x + 3y)
We can use the distributive property to generate an equal expression.
Write a equation that is equivalent that only uses addition
- 3x-8y-4-2
Answer:
Step-by-step explanation:
-3x - 8y - 2
If you wanna be Dora then please help me!
Liu is making a rabbit pen. The graph shows where he plans to place it in his backyard. Each unit on the graph represents 1 foot.
The length of the side between U and T is _______ feet.
Enter the number only.
Answer:
I think tge answer would be 24 I am not for sure
London is working two summer jobs, making $7 per hour babysitting and making $13 per hour landscaping. In a given week, she can work no more than 14 total hours and must earn at least $130. Also, she must work at least 2 hours babysitting and no less than 8 hours landscaping. If xx represents the number of hours babysitting and yy represents the number of hours landscaping, write and solve a system of inequalities graphically and determine one possible solution.
Answer:
7,8,9,10
I HOPE ITS HELP
THANK YOU
If the mean of five values is 8.6 and four of the values are 10, 7, 8, and 7, find
the fifth value.
Answer:
The fifth value is 11
A group of seven people went to an amusement park and spent $234 on tickets. If
a child's ticket costs $28 each and an adult ticket costs $37.50 each, how many
adult tickets and how many child tickets were purchased?
Answer:
3 adult tickets and 4 child tickets were bought.
Answer:
4 adult tickets and 3 child tickets
Step-by-step explanation:
So doing 234/7 gives you 33.428... which means its not all just children or adults. (I know that's common sense but it's best to do this anyway to further justify your answer)
The total cost for all 7 people shows that there must be an even amount of adult tickets to end up with a whole number so either 2, 4, or 6 adults.
2 adults = $75
4 adults = $150
6 adults = $225
Now we can use these possibilities to figure out if the left over child tickets added to the adult tickets would equal $234. (quick note: I am using # to show that it doesn't equal $234)
If 2 adults = $75, 5 children = $140, $140+$75 = $215 # $234
If 4 adults = £150, 3 children = $84, $84+$150 = $234
Now because we have already figured out that it would be 4 adult tickets and 3 child tickets, we wouldn't need to figure out 6 adult tickets and 1 child ticket, but, again, this would justify your answer and help to secure your marks.
If 6 adults = $225, 1 child = 28, $28+$225 = $253 # $234
I hope this answer helped you out and if you have any questions I'd be happy to help :)
(3x^-3)^2 what is the degree
The degree is -6
To simplify, you have to combine the degrees, and you multiply the degree values to get the final degree
How do you know to which group an 8-year-old belongs, those
who must be accompanied by an adult or those who do not need
to be accompanied by an adult? Explain.
Answer:
Those who do not need to
Step-by-step explanation:
i would say this because they are old enoght to know how to do things by them self althought it does depend on who
if f(x) =2x-6 then f(1)=
Answer:
f(1) = -4
Step-by-step explanation:
Given that,
f(x) = 2x-6
We need to find the value of f(1).
Put x = 1 in the above expression.
f(1) = 2(1)-6
= 2-6
= -4
So, the value of f(1) is equal to -4.