Answer:
7 teams
Step-by-step explanation:
29÷4 which gives us 7 remainder 1 so 1 person will not be included in the team
Brian wants to determine the best date for the seventh grade carnival. He plans to survey a random sample of seventh graders to choose the best date.
How can Brian select a random sample of the seventh graders in his school?
A
Brian should survey all of the girls in the seventh grade.
B
Brian should survey all of the football players in the seventh grade.
C
Brian should survey the first class that comes to lunch based on the seventh grade lunch schedule.
D
Brian could put the names of all the 7th grade students in a hat, and he could draw 25 names from the hat.
Answer:
D seems to be the best answer
Answer:
D
Step-by-step explanation:
Please help with number 12
Answer:
61
Step-by-step explanation:
Answer:
Step-by-step explanation:
12)
we are told that ∠ABD = 61°
then we also know that ∠ADB = 61° b/c there are the equal legs of an isosceles triangle.
and we know by inspection that the ΔBCD is identical to ΔABD so it also has 61° angles so
∠ABC = 61 + 61 =122°
:)
What is the midpoint of AB need help?
Answer:
(0,0)
Step-by-step explanation:
The midpoint is (0,0) because as you can see in the graph the middle would be (0,0). However, if point A moved even one step further or closer the midpoint will also shift
ILL BRAINLIEST YOU IF YOU GET IT RIGHT PLEASE HELP ME
Step-by-step explanation:
R' = (-2,0)
E' = (-2,2)
F' = (4,4)
Convert the angle \theta=\dfrac{5\pi}{12}θ=
12
5π
theta, equals, start fraction, 5, pi, divided by, 12, end fraction radians to degrees.
Answer:
75°
Step-by-step explanation:
A cone has a volume of 1256 cubic feet and a radius of 10 feet. What is its height?
Answer:
hight equals 11.99 I think, I could be wrong.
A spinner with five equal-sized sections numbered 1 through 5 is shown. The spinner is spun twice and the product of the numbers in the sections where the arrow lands is calculated. What is the probability that the product of the numbers is even?
A.)1/16
B.)4/25
C.)1/2
D.)16/25
Answer: The Answer is D.) 16/25
Step-by-step explanation: I got it correct on Study Island
Which is greater 52.708 or 52.078
Answer:
52.708
Explanation:
It's 708 instead of 78 even rounded 52.708 would be more.
Answer:
52.708 is greater then 52.078
Step-by-step explanation:
Thats the answer!! Hope I could help u!! :)
HELPP ASAP IS PLEASEEE DONT SEND A FILE AT ALL STEP BY STEP EXPLANATION
Answer:
x + 6 y - 4
Step-by-step explanation:
A moved 6 units to the right so plus 6 then moved 4 units down so minus 4
Please help me last time I asked 2 days ago! No one answered. :(
Answer: The answer is number 4
Step-by-step explanation:
The answer is the one in the right up, the first one.
The ratio of cups of sugar to cups of flour needed to bake cookies is 1:5.
If Myesha uses 25 cups of flour, how much sugar is needed? *
On a coordinate grid the x axis represents the age of a plant in weeks, and the y axis represents the height of the plant in inches. After 2 weeks, the plant was 4 inches tall. Write the coordinates.
Answer: (2,4)
Step-by-step explanation: The coordinates are 2,4
Please help me with this question
Answer:
2377 10^3
hope this helped
Step-by-step explanation:
determine algebraically the zeros of f(x)=4x^3+32^2-36x
Answer:
x = 8
x = 1
Step-by-step explanation:
STEP 1:
Equation at the end of step 1
(22x2 - 36x) + 32 = 0
STEP 2:
STEP 3: Pulling out like terms
3.1 Pull out like factors :
4x2 - 36x + 32 = 4 • (x2 - 9x + 8)
Trying to factor by splitting the middle term
3.2 Factoring x2 - 9x + 8
The first term is, x2 its coefficient is 1 .
The middle term is, -9x its coefficient is -9 .
The last term, "the constant", is +8
Step-1 : Multiply the coefficient of the first term by the constant 1 • 8 = 8
Step-2 : Find two factors of 8 whose sum equals the coefficient of the middle term, which is -9 .
-8 + -1 = -9 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -8 and -1
x2 - 8x - 1x - 8
Step-4 : Add up the first 2 terms, pulling out like factors :
x • (x-8)
Add up the last 2 terms, pulling out common factors :
1 • (x-8)
Step-5 : Add up the four terms of step 4 :
(x-1) • (x-8)
Which is the desired factorization
Equation at the end of step
3
:
4 • (x - 1) • (x - 8) = 0
STEP
4
:
Theory - Roots of a product
4.1 A product of several terms equals zero.
When a product of two or more terms equals zero, then at least one of the terms must be zero.
We shall now solve each term = 0 separately
In other words, we are going to solve as many equations as there are terms in the product
Any solution of term = 0 solves product = 0 as well.
Equations which are never true:
4.2 Solve : 4 = 0
This equation has no solution.
A a non-zero constant never equals zero.
Solving a Single Variable Equation:
4.3 Solve : x-1 = 0
Add 1 to both sides of the equation :
x = 1
Solving a Single Variable Equation:
4.4 Solve : x-8 = 0
Add 8 to both sides of the equation :
x = 8
Supplement : Solving Quadratic Equation Directly
Solving x2-9x+8 = 0 directly
Earlier we factored this polynomial by splitting the middle term. let us now solve the equation by Completing The Square and by using the Quadratic Formula
Parabola, Finding the Vertex:
5.1 Find the Vertex of y = x2-9x+8
Parabolas have a highest or a lowest point called the Vertex . Our parabola opens up and accordingly has a lowest point (AKA absolute minimum) . We know this even before plotting "y" because the coefficient of the first term, 1 , is positive (greater than zero).
For any parabola,Ax2+Bx+C,the x -coordinate of the vertex is given by -B/(2A) . In our case the x coordinate is 4.5000
Plugging into the parabola formula 4.5000 for x we can calculate the y -coordinate :
y = 1.0 * 4.50 * 4.50 - 9.0 * 4.50 + 8.0
or y = -12.250
Parabola, Graphing Vertex and X-Intercepts :
Root plot for : y = x2-9x+8
Axis of Symmetry (dashed) {x}={ 4.50}
Vertex at {x,y} = { 4.50,-12.25}
x -Intercepts (Roots) :
Root 1 at {x,y} = { 1.00, 0.00}
Root 2 at {x,y} = { 8.00, 0.00}
Solve Quadratic Equation by Completing The Square
5.2 Solving x2-9x+8 = 0 by Completing The Square .
Subtract 8 from both side of the equation :
x2-9x = -8
Now the clever bit: Take the coefficient of x , which is 9 , divide by two, giving 9/2 , and finally square it giving 81/4
Add 81/4 to both sides of the equation :
On the right hand side we have :
-8 + 81/4 or, (-8/1)+(81/4)
The common denominator of the two fractions is 4 Adding (-32/4)+(81/4) gives 49/4
So adding to both sides we finally get :
x2-9x+(81/4) = 49/4
Adding 81/4 has completed the left hand side into a perfect square :
x2-9x+(81/4) =
(x-(9/2)) • (x-(9/2)) =
(x-(9/2))2
Things which are equal to the same thing are also equal to one another. Since
x2-9x+(81/4) = 49/4 and
x2-9x+(81/4) = (x-(9/2))2
then, according to the law of transitivity,
(x-(9/2))2 = 49/4
We'll refer to this Equation as Eq. #5.2.1
The Square Root Principle says that When two things are equal, their square roots are equal.
Note that the square root of
(x-(9/2))2 is
(x-(9/2))2/2 =
(x-(9/2))1 =
x-(9/2)
Now, applying the Square Root Principle to Eq. #5.2.1 we get:
x-(9/2) = √ 49/4
Add 9/2 to both sides to obtain:
x = 9/2 + √ 49/4
Since a square root has two values, one positive and the other negative
x2 - 9x + 8 = 0
has two solutions:
x = 9/2 + √ 49/4
or
x = 9/2 - √ 49/4
Note that √ 49/4 can be written as
√ 49 / √ 4 which is 7 / 2
Solve Quadratic Equation using the Quadratic Formula
5.3 Solving x2-9x+8 = 0 by the Quadratic Formula .
According to the Quadratic Formula, x , the solution for Ax2+Bx+C = 0 , where A, B and C are numbers, often called coefficients, is given by :
- B ± √ B2-4AC
x = ————————
2A
In our case, A = 1
B = -9
C = 8
Accordingly, B2 - 4AC =
81 - 32 =
49
Applying the quadratic formula :
9 ± √ 49
x = —————
2
Can √ 49 be simplified ?
Yes! The prime factorization of 49 is
7•7
To be able to remove something from under the radical, there have to be 2 instances of it (because we are taking a square i.e. second root).
√ 49 = √ 7•7 =
± 7 • √ 1 =
± 7
So now we are looking at:
x = ( 9 ± 7) / 2
Two real solutions:
x =(9+√49)/2=(9+7)/2= 8.000
or:
x =(9-√49)/2=(9-7)/2= 1.000
Two solutions were found :
x = 8
x = 1
Find the areas of a circle whose diameter is 21 cm
Answer:
Your answer is 346.36059
Step-by-step explanation:
A = pi*r²
A = pi * 10.5²
A = pi * 110.25
A = 346.36059
We can write the the area of the circle as 110.25π square centimeter.
What is Area?Area is a collection of two - dimensional points enclosed by a single dimensional line. Mathematically, we can write -
V = ∫∫F(x, y) dx dy
Given is a circle whose diameter is 21 cm.
It is asked to find the area of a circle whose diameter is 21 cm.
It is given that the diameter of the circle is -
d = 21 cm
r = d/2 = 21/2
r = 10.5 cm
We know that the area of the circle as -
Area = πr²
Area = π x 10.5 x 10.5
Area = 110.25π
So, it can be concluded that the area of the circle is 110.25π square centimeter.
Therefore, we can write the the area of the circle as 110.25π square centimeter.
To solve more questions on areas, visit the link-
https://brainly.com/question/29213222
#SPJ7
may someone please help me out
C. 700 units.
The formula for the surface area of a rectangular prism is: 2 ((Width × Length) + (Height × Length) + (Height × Width))
(14 × 12) + (7 × 12) + (7 × 14)
168 + 84 + 98 = 350
Now do 350 × 2 = 700
700 units squared.
what is the solution to 1< 25-4x<19?
ASAP!!!!!!!!!!!!!!!!!!
Answer:
d $258.50
Step-by-step explanation:
hope it helps
El tamaño de cierto cultivo de bacterias se multiplica por 2 cada 30 minutos. Si suponemos que el cultivo tiene inicialmente 256 de bacterias, ¿Cuántas bacterias habrá transcurridas 3 horas? Cree un modelo matemático y exprese su respuesta como una potencia
Answer:
La población de bacterias después de tres horas es de [tex]2^{14}[/tex] bacterias.
Step-by-step explanation:
En este enunciado observamos un caso de progresión geométrica, en donde la población de bacterias se duplica cada treinta minutos, es decir:
[tex]\frac{p(n\cdot\Delta t)}{p(0)} = 2^{n}[/tex] (1)
Donde:
[tex]\Delta t[/tex] - Intervalo de tiempo requerido para el incremento geométrico de la población, en minutos.
[tex]n[/tex] - Número de períodos para incremento geométrico, sin unidad.
Sabemos que la población inicial de bacterias es 256 y que 3 horas son 6 veces 30 minutos. Entonces, tenemos la siguiente razón:
[tex]\frac{p(6\cdot \Delta t)}{p(0)} = 2^{6}[/tex] (2)
Si sabemos que [tex]p(0) = 256[/tex], entonces [tex]p(6\cdot \Delta t)[/tex] es:
[tex]p(6\cdot \Delta t) = 2^{6}\cdot p(0)[/tex]
[tex]p(6\cdot \Delta t) = 2^{6}\cdot (256)[/tex]
[tex]p(6\cdot \Delta t) = 2^{6}\cdot 2^{8}[/tex]
[tex]p(6\cdot \Delta t) = 2^{14}[/tex]
La población de bacterias después de tres horas es de [tex]2^{14}[/tex] bacterias.
What is 9 divided by 1/5
Answer:
its 45
Step-by-step explanation:
Answer:
45
Step-by-step explanation:
9 * 5/1
=> 45
Thenks and mark me brainliest :))
HELP!!!!
What is the surface area of the figure below?
surface area= perimeter x height + 2b
s= pxh+2b
example: 18(8)+2(12)
explain: 18 is the perimeter and 8 is the height then you have to add the base times 2
Which table represents a linear function?
A bag contains 9 red marbles, 8 green marbles and 12 blue marbles.
What is the probability of picking a green or red marbles? *
Answer:
17/29 or 58.6%
Step-by-step explanation:
P(G or R) = 8/29 + 9/29 = 17/29
A bakery sells cakes, cookies, and pastries. They wonder if customers are equally likely to buy each product
They take a sample of 200 recent purchases and record what was purchased (they are willing to treat this as
a random sample). Here are the results:
Product
Observed purchases
Cakes
65
Cookies Pastries
68
67
They want to perform a x' goodness-of-fit test to determine if these results suggest that one type of
product is more popular than the others.
What is the expected count of cake purchases?
You may round your answer to the nearest hundredth.
Expected:
Answer: The expected count of cake purchases is 66.67 (rounded to the hundreths).
Step-by-step explanation: Hypothesis the bakery is trying to find is if customers are equally likely to buy each product and since the sample is 200, we would have to equally split that between the 3 categories, so the expected counts for Cakes, cookies, and pastries would all be 66.67 (rounded to the hundreths).
The expected count of cake purchases would be 66.67 (rounded to the hundredths).
What is the unitary method?The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.
The results are given as:
Product Observed purchases
Cakes 65
Cookies 68
Pastries 67
To find if customers are equally likely to buy each product and since the sample is 200,
we would have to equally split that between the 3 categories,
The expected count of cake purchases = 200/3
= 66.67
Thus, the expected counts for Cakes, cookies, and pastries would be 66.67 (rounded to the hundredths).
Learn more about the unitary method;
https://brainly.com/question/23423168
2x + 5y = -13
I need help please
Answer:
x=−5/2y+−13/2
Step-by-step explanation:
Let's solve for x.
2x+5y=−13
Step 1: Add -5y to both sides.
2x+5y+−5y=−13+−5y
2x=−5y−13
Step 2: Divide both sides by 2.
2x/2=−5y−13/2
x=−5/2y+−13/2
what is 56-29 f-ree points
Answer:
27
Step-by-step explanation:
Answer:
27
Step-by-step explanation:
Thanksss
How much sugar is needed to make 120 ounces of the shortbread cookie dough ? B. If 30 ounces of butter is used, how much flour will be needed ?
Amelia received $4.15 in tips from one table. All of her tips were in quarters, dimes and nickels. There were five less dimes than quarters and three more nickels than twice the number of quarters. How many dimes did she have?
Answer:
the answer is 23.........
Rewrite in radical form 1/-3/6^x
Answer:
[tex] \frac{1}{ \frac{ - 3}{ {6}^{x} } } \\ = 1 \times \frac{ {6}^{x} }{ - 3} \\ = - \frac{ {6}^{x} }{3} [/tex]
Brewster collected 100 pounds of aluminum cans to recycle. He plans to
collect an additional 25 pounds each week. Write and graph the equation
for the total pounds, P, of aluminum cans after w weeks. *
Answer:
Slope represents that the weight of can increased by 25 pounds each week. Y-intercept represents initial weight of cans, i.e., 100 pounds.
The time taken by Rufus to collect 400 pounds of aluminum cans is 12 weeks.
Step-by-step explanation:
It is given that Rufus collected 100 pounds of aluminum cans to recycle. He plans to collect and additional 25 pounds each week.
It means initial weight of cans = 100 pounds
Additional weight of cans = 25 pounds each week
Let W be the number of week.
The equation for the total pounds P of aluminum cans after W weeks is
.... (1)
The slope intercept form of a line is
.... (2)
where, m is slope and b is y-intercept.
From (1) and (2) we get
It means slope and y-intercept are 25 and 100 respectively.
Slope represents that the weight of can increased by 25 pounds each week. Y-intercept represents initial weight of cans, i.e., 100 pounds.
We need to find the time taken by Rufus to collect 400 pounds of aluminum cans.
Substitute P =400 in equation (1).
Subtract 100 from both sides.
Divide both sides by 25.
Therefore, the time taken by Rufus to collect 400 pounds of aluminum cans is 12 weeks.