Answer:
11/32
Step-by-step explanation:
Given that:
Red section (R) = 3 ; white section (W) = 3 ; green section (G) = 2
Total Number of sections = 8
Probability of getting the same color on two spins :
Probability = (required outcome / Total possible outcomes)
Either P(RR) or P(WW) or P(GG)
(3/8 * 3/8) + (3/8 * 3/8) + (2/8 * 2/8)
9/64 + 9/64 + 4/64
(9 + 9 + 4) / 64
22 / 64
= 11/32
the probability of getting the same color twice is
[tex]\frac{11}{32}[/tex]
Given :
A spinner is evenly divided into eight sections: three are red, three are white and two are green.
Total of 8 sections.
red=3
white =3
green =2
Probability of getting two red color =[tex]\frac{3}{8} \cdot \frac{3}{8}= \frac{9}{64}[/tex]
Probability of getting two white colors =[tex]\frac{3}{8} \cdot \frac{3}{8}= \frac{9}{64}[/tex]
Probability of getting two green colors=[tex]\frac{2}{8} \cdot \frac{2}{8}= \frac{4}{64}[/tex]
Probability (getting same color twice)=[tex]\frac{9}{64} + \frac{9}{64}+ \frac{4}{64}=\frac{22}{64} =\frac{11}{32}[/tex]
Learn more : brainly.com/question/20988561
HEEEEEELP
A souvenir store sells postcards and magnets.
Each postcard costs $1, and each magnet costs $3.
If Annalee purchased a total of 10 postcards and
magnets that cost a total of $22 before tax, how many
magnets did she purchase?
A) 3
B) 4
C) 5
D) 6
4
Answer:
6
Step-by-step explanation:
Answer:
D) 6
Step-by-step explanation:
Assumption method:
Assume all are postcards.
Total cost of postcards = 10 × $1
= $10
Difference between total = $22 - $10
= $12
Difference between subjects = $3 - $1
= $2
No. of magnets = $12 ÷ $2
= 6
HELP LOTS OF POINTS AND BRAINLIEST
Find each probability for one roll of a number cube:
12. P(4) 13. P(odd)
Answer:
12. P(4) = 1/6
13. P(odd) = 3/6 = 1/2
Step-by-step explanation:
hope this helps, pls mark brainliest :D
Write 72xy^2 as a prime factorization. With the steps
I think that this number is already prime.
Step-by-step explanation:
I could be wrong
target sells 24 bottles of water for $3 and 36 bottles of water for $4 which is the better buy and by how much?
A 24 bottles for $3 by 1.5 ¢ per bottle
B 24 bottles for $3 by 70 ¢ per bottle
C 24 bottles for $3 by 75 ¢ per bottle
D 36 bottles for $4 by 1.4 ¢ per bottle
Amir’s average math score for the first 4 tests of the school year is 88 Which equation can be used to calculate what Amir’s average must be on the next two tests so that his overall average is 90
Answer:
Equation that can be used = [tex]\frac{4(88)+2x}{6} = 90[/tex]
Step-by-step explanation:
Given that:
Amir's average on four tests = 88
Let,
x be the score on one test
For two tests = 2x
Sum of all scores = Average of four tests + Score of two tests
Sum of all scores = 4(88) + 2x
Total number of tests = 6
Overall average needed = 90
Now,
[tex]Average = \frac{Sum\ of\ quantities}{Number\ of\ quantities}\\90 = \frac{4(88)+2x}{6}\\\\\frac{4(88)+2x}{6} = 90[/tex]
Hence,
Equation that can be used = [tex]\frac{4(88)+2x}{6} = 90[/tex]
Find the gradients of lines A and B
Step-by-step explanation:
[tex]the \: gradient \: of \: line \: a \: is[/tex]
[tex]m = \frac{4}{1 } \\ m = 4[/tex]
[tex]the \: gradient \: of \: line \: b \: is[/tex]
[tex]m = \frac{ - 2}{1} \\ m = - 2[/tex]
Gradients of line A is equals to [tex]4[/tex] and gradients of line B is equals to [tex]-2[/tex].
What is gradients?" Gradients is defined as the ratio of difference of y-coordinates to the difference of x-coordinates."
Formula used
Gradients [tex]= \frac{y_{2}- y_{1}}{x_{2}- x_{1}}[/tex]
According to the question,
Given from the graph,
Coordinates of Line A
[tex](x_{1} ,y_{1} ) = ( 3,3)\\\\(x_{2} ,y_{2} ) = ( 4,7)[/tex]
Substitute the value in the formula we get,
Gradient of line A [tex]= \frac{7-3}{4-3}[/tex]
[tex]= 4[/tex]
Coordinates of Line B
[tex](x_{1} ,y_{1} ) = ( -1,3)\\\\(x_{2} ,y_{2} ) = ( -2,5)[/tex]
Gradient of line B [tex]= \frac{5-3}{-2-(-1)}[/tex]
[tex]= -2[/tex]
Hence, gradients of line A is equals to [tex]4[/tex] and gradients of line B is equals to [tex]-2[/tex].
Learn more about gradients here
https://brainly.com/question/13020257
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a man buys a washing machine who price VAT(value added tax) is birr 175.its VAT is charged at 15% how much did the man actually pay?
Answer:
He actually paid a sum of $201.25
Step-by-step explanation:
We simply add the vat value to the cost of the machine
Mathematically, that’s (
175 + 15% of 175
= 175 + (15/100 * 175)
= 175 + 26.25
= $201.25
B^10/B^2=B^5 True or false
Answer:
True
Step-by-step explanation:
What is the equation in standard form using integers y+4=3/4(x+7)
Nhich relationships could have a negative correlation? Select three options.
Number of hours on video games and test scores
Speed of a car and minimum stopping distance
average running speed and total race time
adult's head circumference and age
outside temperature and amount of a heating bill
Answer:
A,C,E
Step-by-step explanation:
Just took teh Semester Exam for Math, got the answer correct
Sry im 2 days late lol
Answer:
ITS A,C,E
Step-by-step explanation:
just did a exam lol
Solve x^2- 2x - 4 = 0
Answer:
[tex]\displaystyle x= 1\pm \sqrt{5}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Standard Form: ax² + bx + c = 0Quadratic Formula: [tex]\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}[/tex]Step-by-step explanation:
Step 1: Define
x² - 2x - 4 = 0
Step 2: Identify Variables
a = 1
b = -2
c = -4
Step 3: Solve for x
Substitute [QF]: [tex]\displaystyle x=\frac{2\pm\sqrt{(-2)^2-4(1)(-4)} }{2(1)}[/tex]Exponents: [tex]\displaystyle x=\frac{2\pm\sqrt{4-4(1)(-4)} }{2(1)}[/tex]Multiply: [tex]\displaystyle x=\frac{2\pm\sqrt{4+16} }{2}[/tex]Add: [tex]\displaystyle x=\frac{2\pm\sqrt{20} }{2}[/tex]Simplify: [tex]\displaystyle x=\frac{2\pm 2\sqrt{5} }{2}[/tex]Factor: [tex]\displaystyle x=\frac{2(1\pm \sqrt{5}) }{2}[/tex]Divide: [tex]\displaystyle x= 1\pm \sqrt{5}[/tex]Answer:
yes
Step-by-step explanation:
Identify the initial amount and the growth rate of the following:
Y = 9.8 (1.35)^t
On a field trip, there are 3 chaperones for every 20 students. There are 92 people on the trip. Answer these questions. If you get stuck, consider using a tape diagram.
How many chaperones are there?
Answer:
14
Step-by-step explanation:
20 times four is 80 so we already have 12 chaperones because there are 3 chaperones for every 20 students.
20 divided by 3 is 6.6
We cannot have .6 of a chaperone so we round up to 7
And since 7 can only go into 20 two times
That means there are two more chaperones
2+12 is 14
There are 14 chaperones for the 92 students
(Hope this helps and hope im right)
Answer:
80(students)
12(chaperons)
Step-by-step explanation:
since total of 92 people in the trip including student and chaperon,add groups of 23 to become 92 or use this equation:
(20+3)×y=92
23y=92
y=92/23
y=4
therefore,
20×4=80(students)
3×4=12(chaperons)
x
Equivalent ratios
ord
Select two ratios that are equivalent to 4: 18.
Due today please help!
Solve the inequality 2.5d+11.4<-1.3d solve the inequality
Answer:
d < -3
Step-by-step explanation:
2.5d+11.4<-1.3d
3.8d+11.4<0
3.8d<-11.4
d < -3
Just isolate and solve for x and remember, what you do to one side, you must do to the other.
Hope this helps!
Answer:
[tex]d < -3[/tex]
Step-by-step explanation:
Move the constant to the right-hand side and change its sign:
[tex]2.5d < - 1.3d - 11.4[/tex]
Move the variable to the left-hand side and change its signs:
[tex]2.5d + 1.3d < 11.4[/tex]
Collect like terms:
[tex]3.8d < - 11.4[/tex]
Divide both sides of the inequality by 3.8:
[tex]3.8 \div - 11.4 = - 3[/tex]
Therefore, the answer is d < -3.
What is the value of 12⁰?
Answer:
1
Step-by-step explanation:
Anything to the power of zero is = 1
Answer: the answer is 1
Step-by-step explanation:
A recipe for 6 people uses 250g
of flour. How much flour will be
needed to make the recipe for 15
people?
Answer:
625
Step-by-step explanation:
250/6 =41.6666666667
41.6666666667x15 = 625
The data set shows how many points Mark scored in each basketball game he played this season.
1.4, 4.5,5, 7, 8, 8, 10, 11, 11, 11, 14, 15, 16
The box plot shown is a summary of the data.
Move numbers to the spaces to label the values and complete the box plot.
*not drawn to scale
1
5
8
9
11
12
14
15
16
Answer:
1,5,8,11,16
Step-by-step explanation:
Find the measure of angle A.
75°
x + 53
+68
Answer:
Step-by-step explanaton:
Write an equation parallel to x - 2y = 4 that passes through the point (-8, 2).
Answer:
y=1/2x+6
Step-by-step explanation:
Change to slope intercept form: y=1/2x-2
Take out the b term
Plug in point (-8, 2)
Get b as 6
Plug in b
Get y=1/2x+6
Which is the factored form of 6x^3 + 8?
Factor the expression 4x + 32. Explain each step you
take in the process.
Answer:
4x + 32 = 4x + 4.8 = || 4. (x + 8) ||
Step-by-step explanation:
Name five fractions whose values are between 1/2and
7/8
Answer:
9/16 10/16 11/16 12/16 13/16
Step-by-step explanation:
What is the domain of the square root function graphed below?
On a coordinate plane, a curve opens down to the right and goes through quadrants 1 and 2. The curve starts at (negative 4, 0) and goes through (negative 3, 1) and (0, 2).
x greater-than-or-equal-to negative 4
x greater-than negative 4
x greater-than-or-equal-to 0
x greater-than 0
Answer:
x greater-than-or-equal-to negative 4
Answer:
X is equal to or greater than four
Step-by-step explanation:
I got it right!!! hopefully you do too
For Sunday brunch, Alisha is making a recipe that requires 8cups of milk. She has 3 quarts of milk. Does she have enough for the recipe?
Answer:
Step-by-step explanation:
She does have enough
HELP ASAP PLEASE
Kristen Lynn sells college textbooks on commission. She gets 4% on the first
$5000 of sales, 8% on the next $5000 of sales, and 12% on sales over
$10,000. In July of 1997 Kristen's sales total was $13,500.
Answer:
Step-by-step explanation:
5000 at 4% =200 (5000*0.04)
5000 at 8% = 400 (5000*0.08)
3,500 at 12% = 420 (3500*0.12)
200+400+420 = 1020
Her commission is 1,020 dollars :)
Help me if you can
Answer:
she would be 6'2 aka 74 inches
Step-by-step explanation:
T = 4 S or S = 1/4 T
T = 4 S = 4 (18,5 inches)
Hope this helps!! Have an amazing day!!
Pls help and take your time cuz if I get this wrong I fail WILL MARK BRAINIEST
Find the value of x in a triangle 68 27