Answer:
-13
Step-by-step explanation:
Opposite of 9t = -9t
Taking the sum of 9t - 13 and -9t
Sum = 9t - 13 + (-9t)
Sum = 9t - 13 - 9t
Sum = 9t-9t - 13
Sum = -13
Hence the expression in standard form is -13
In a class of 30 students, 6 have a brother and 12 have a sister. There are 14 students who do not have any siblings. What is the probability that a student chosen randomly from the class has a brother and a sister?
Answer:
32 siblings from the class theres a possibility that some students had more siblings and not everyone has one
Step-by-step explanation:
.
The probability that a student chosen randomly from the class has a brother and a sister is [tex]\frac{1}{15}[/tex].
What is probability?The chance that something will happen, or how likely it is that an event will occur.
Formula to calculate probabilityprobability of an event = [tex]\frac{number of favorable outcomes}{Total number of outcomes}[/tex]
According to the given question
we have total 30 students.
6 have a brother
12 have a sister
and 14 who don't have any siblings
If we se the provided Venn diagram
the number of students who have only sister is 10
and the number of student who have only brother is 4.
because, 6+12+14 = 32
but we have only 30 students
⇒ 2 students has a brother and a sister.
therefore,
the probability that a student chosen randomly from the class has a brother and a sister = [tex]\frac{number of students as a brother and a sister}{total number of students}[/tex]= [tex]\frac{2}{30}[/tex] =[tex]\frac{1}{15}[/tex]
Hence, the probability that the chosen student from the class has a brother and sister is [tex]\frac{1}{15}[/tex].
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Please help meeeee- look at the figure
Answer:
somethings not right lm.ao
List 3 values that would make this inequality true.
2n≥ 12
Answer:
Answer may vary. e.g. 6, 7, 8
Step-by-step explanation:
n≥6
Pick any number from the range [6, + infinity)
-48a²/-8a
reduse the equation to its smallest form
Answer:
the answer is 6a
Step-by-step explanation:
-48/-8=6
a^2/a=a
combine 6 and a to get 6a.
hope it helped
A basketball team scored 78 points in a game. The players made 6 baskets worth 1 point each and 27 baskets worth 2 points each. The rest of the baskets made were worth 3 points each. Which equation can be used to find b, the number of baskets the players made that were worth 3 points each?
Answer: They made 6 three point shots.
Step-by-step explanation:
Make your equation
(((6x1)+(27x2)+(3x)=78
Simplify
(6+54+3x=78)
60+3x=78
Subtract from both sides
3x=18
Divide from both sides
x=6
The basketball team scored 6 shots worth 3 points.
The number of baskets the players made that were worth 3 points each is 6 and the equation used for this is, total score = The number of 1-point baskets × 1 + The number of 2-point baskets × 2 + The number of 3-point baskets × 3.
What is the equation?A formula known as an equation uses the equals sign to denote the equality of two expressions.
Given:
Total scored by the team = 78 points,
The number of 1-point baskets = 6,
The number of 2-point baskets = 27,
If b is the number of 3-point baskets, the equation can be given as,
Total score = The number of 1-point baskets × 1 + The number of 2-point baskets × 2 + The number of 3-point baskets × 3
78 = 6 × 1 + 27 × 2 + b ×3
b = 6
Therefore, the number of baskets the players made that were worth 3 points each is 6.
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Find the area of a patio shaped like the figure shown below with a length of each square equal to one meter. Please answer asap. I will give brainliest.
Answer:If my calculations are correct and my rounding I would show you my work but I cant upload the picture but I think about
38
Step-by-step explanation:
I=Hope I helped if so can I please have brainliest :)
Answer:
39
Step-by-step explanation: i dont know i just got a 100 on the worksheet
75% of the students in chemistry have had algebra. If there are 300 students in chemistry, how many of them have not had algebra?
Answer:
75/100 x 300 = 225
300 - 225 = 75 students
A 30 gallon tank is being filled at a rate of 2 gallons per minute. There was 6 gallons of water in the tank to begin. Let y represent the total amount of water in the tank and m represent the number of minutes. Write an equation to model the amount of water in the tank.
The amount of water in the tank represented by the equation as:
y = 2m + 6, where y is the total amount of water in the tank, m is the number of minutes.
What is the Linear equation?A linear equation is defined as an equation in which the highest power of the variable is always one.
Let y represent the total amount of water in the tank and m represent the number of minutes.
We can model the amount of water in the tank using the equation:
y = 2m + 6
This equation states that the total amount of water in the tank (y) is equal to the rate of filling (2 gallons per minute) multiplied by the number of minutes (m), plus the initial amount of water in the tank (6 gallons).
For example, if we let m = 5, then y = 2 × 5 + 6 = 16, which means that after 5 minutes, the tank will contain 16 gallons of water.
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it has to be a exponent
Answer:
7
when dividing exponents with the same base, you subtract them. so, 11-7 = 4
In a school with 300 students, a random sample of 40 students who were asked to pick a favorite sport showed that 24 students like to play basketball the most. What number of students in the whole school can be predicted to prefer basketball? PLSSSS I NEED ANSWER RIGHT NOW!
Answer:
180
Step-by-step explanation:
24/60=180/300
So, about 180 students prefer basketball out of the whole school.
Evaluate the expression. 12(7)(4)+6(5)=
Answer:
Step-by-step explanation:
(12×7×4)+6(5)=
336+30=366
Rosa conducted a survey of students' favorite types of music. The results are shown in the table. Of the 550 students in the whole school, how many would you expect to prefer Pop/Rock?
Answer: 264
Step-by-step explanation:
please help me with question 1 and 2.
Answer:
1 cone
Step-by-step explanation:
2. rectangular prism
Answer:
the first one is a cone
Step-by-step explanation:
the second one is a rectangular prism
(2x^3+4x^5)^2 =
HELP
Answer:
4x⁶(1+2x²)²
Step-by-step explanation:
Factor out the common term 2x³
Use Multiplication Distributive Property: (xy)^a=x^a y^a
Simplify 2² to 4
The use the power rule and you get 4x⁶(1+2x²)²
Simplify the fraction. 11/55
Answer:
1/5
Step-by-step explanation:
That'll be one brainliest
Answer: 1/5
Step-by-step explanation:
You have to divide the numerator and the denominator by the GCF ( greatest common factor) of 11 and 55. 11 is the GCF of 11 and 55 so 11÷11=1 and 55÷11=5
Hope this helps :)
Miguel and three of his friends went to the
movies. They originally had a total of $40. Each boy had the same amount
of money and spent $7.50 on a ticket. How much money did each boy
have left after buying his ticket? Write and solve an equation that represents the situation. Explain how you solved your equation. Compare the arithmetic solution and algebraic solution.
Answer:
either 17.5 or 10
Step-by-step explanation:
if you minus 40 3 times you get 17.5
Question 4 please. I will mark brainliest!! i would at least like the equation of the graph thank you
Answer:
a. -3 < x ≤ 5
b. -3 ≤ y < 3
c. (0, 0)
d. x = -3, x = 1, x = 5
e. -3 < x ≤ - 1, and 1 ≤ x ≤ 3,
f. (-1, -1), and (3, -3)
Step-by-step explanation:
a. The domain of a function is the set of the possible independent variable values which is -3 < x ≤ 5
b. The range of a function is the set of the possible values of the dependent variable which is -3 ≤ y < 3
c. The y-intercept is the point the graph crosses the y-axis
The y-intercept in the graph is the point (0, 0)
d. f(x) ≥ 0 when x = -3, x = 1, x = 5
f(x) ≥ 0 over the following range; -3 < x ≤ - 1.5, 0 ≤ x ≤ 1.5, 4.5 ≤ x ≤ 5
e. The intervals over which f(x) is decreasing are;
-3 < x ≤ - 1, and 1 ≤ x ≤ 3,
f. The local minimums where f(x) has the minimum values are;
(-1, -1), and (3, -3)
Mary Borrowed $3,000 at the rate of 8% per annum interest is compounded annually calculate the total amount owed at end of the 2 years?
Answer:
A=P×(1+r÷100)t
A=3000×108÷100×108÷100
A=17496÷2
A=3499.2
Step-by-step explanation:
What's the degree of 6s^4 t^2?
Answer:
6
Step-by-step explanation:
add the two exponents
Answer:
Step-by-step explanation:
Add all the powers of the term.
4 + 2 = 6
Degree = 6
Is 8, 11.5, 8.5 a right triangle?
Answer:
Monkey says NO
Step-by-step explanation:
It was close, but banana was 1.7 banana short. sorry for your loss.
4d2–15d+9=0 solve for d
Answer:
d = 3 and d = 3/4
Step-by-step explanation:
This is a quadratic eqution. Let's use the quadratic formula to solve it.
If ax^2 + bx + c = 0, then:
-b ± √(b^2 - 4ac)
x = ---------------------------
2a
With a = 4, b = -15 and d = 9, we have:
-(-15) ± √(225 - 4(4)(9) ) 15 ±√81 15 ±9
d = ------------------------------------ = -------------- = -------------- = 24/8 and 6/8
2(4) 8 8
Simplifying these results, we get d = 3 and d = 3/4
Please help. I will give brainliest to correct answer :)
HELP WILL GIVE BRIANLY AND PLS WORK IT OUT!
Kim chose a certain number, she multiplies it by 2 then subtract 60. she the divide the result by 11. Her result was 4. What number did Kim choose at the beginning? Show Working.
Answer: 52.
Step-by-step explanation:
52x2=104
104-60=44
44/11=4
which best describes the scatter plot
Carlos needs to paint the outside of the shed in his backyard, including its roof but not including its floor. A rectangular prism with a length of 8 feet, width of 5 feet, and height of 6 feet. What is the total area of the surfaces that he needs to paint? 214 feet squared 230 feet squared 300 feet squared 350 feet squared
Answer:
It's 230 feet squared! (aka B)
Step-by-step explanation:
I just took the test :)
Answer:
B.) 230 feet squared.
Step-by-step explanation:
I hope this helps!! :)
An advertising flyer shows address labels as 4.3 cm by 1.2 cm. The ratio of the flyer label to the actual label is 2:3. What are the dimensions of the actual address labels?
Answer:
6.45 cm by 1.8 cm
Step-by-step explanation:
Ratio of label to actual measurement ; 2 : 3
For a flyer label size of 4.3
Actual label size equals :
(Flyer ratio / total ratio) * total size = flyer size
2/5 * x = 4.3
2x / 5 = 4.3
2x = 21.5
x = 21.5 / 2
x = 10.75
Actual size =. 10.75 - 4.3 = 6.45 cm
2/5 * x = 1.2
2x / 5 = 1.2
2x = 6
x = 6 / 2
x = 3
Actual size = 3 - 1.2 = 1.8 cm
6.45 cm by 1.8 cm
How is this triangle classified?
Answer:
1st choice!!!
Step-by-step explanation:
Answer:
Isosceles obtuse
Step-by-step explanation:
9. Sara and Yusuf's grandmother gives them money for Christmas every year. They share the money in the
ratio of their ages. This year their grandmother gave them R1 500 together. Sara received R675. They are both younger than 18 years old. Determine how old Sara and Yusuf are.
in
Answer:
Sara is 9 years old while Yusuf's is 11 years old
Step-by-step explanation:
The given parameters are;
The ratio Sara and Yusuf share the money they receive = The ratio of their ages
The amount Sara and Yusuf received from their grandmother this year = R1,500
The amount of money Sara receives = R675
Therefore, the amount of money Yusuf receives = R1,500 - R675 = R825
Let 'x', and 'y' represent the ages of Sara and Yusuf
Therefore, the ratio of their ages, x/y = R675/R825) = 9/11
x·11 = y·9
x, and y < 18
When x = 9, y = 11, we get;
9·11 = 11·9
Therefore a possible solution is Sara's age = x = 9 and a possible solution for Yusuf's age, y = 9
Help!
Please and thank you
Answer:
67.5
67.5
40
PLEASE ADD BRAINEST I NEED TO RaNK UPAnswer:
x = 22.5
top angle = 45
bottom angles = 67.5
Step-by-step explanation:
2x + 3x +3x = 180
8x = 180
x = 22.5
2x
2(22.5) = 45
3x
3(22.5) = 67.5
45 + 67.5 + 67.5 = 180
Two families go to a baseball game. One family purchases two adult tickets and
three youth tickets for $33. Another family purchases three adult tickets and two
youth tickets for $37. Find the individual price of each adult and youth ticket.