Answer:
6
Step-by-step explanation:
Negative ×negative always gives gives a positive
3. Subtract
x)--5x2 + x-2
g(x) = -3x2 + 3x + 9 9
Step-by-step explanation:
For example: Subtract 4x - 10y + 15z from 5x + 8y - 20z.
Step 1: Arrange the polynomials in standard form. In this example, it is already arranged.
Step 2: Place them horizontally.
(4x - 10y + 15z) - (5x + 8y - 20z)
Step 3: Change the sign of the second polynomial through the parentheses.
4x - 10y + 15z - 5x - 8y + 20z
Step 4: Arrange the like terms together.
4x - 5x - 10y - 8y + 15z + 20z
Step 5: Solve the equation
-x - 18y + 35z
Therefore, when we subtract 4x - 10y + 15z from 5x + 8y - 20z = -x - 18y + 35z.
What is the value of x? A=55 B=80
Answer:
x = 45°
Step-by-step explanation:
80° + 55° + x = 180°
135° + x = 180°
x = 45°
Zach's step counter tracked how many steps he took each day for a week. Number of steps 2,000 4,000 6,000 8,000 10,000 What was Zach's median number of steps?
Answer: 8,000
Step-by-step explanation: Did it on IXL
Andrew wants to lay new turf in his garage.Andrews garden is a rectangle measuring 3m by 4m,New turf cost 12.50pr m2.
How much will it cost Andrew to get enough new turf for his garden?
I WOULD REALLY APPRECIATE YOUR HELP
Answer:
$150
Step-by-step explanation:
The area of the lawn is 12m so 12 x 12.50 is 150. It would cost $150
If P is the incenter of triangle JKL, find PJ
What does "Y" equal? Answer ASAP and whoever gets it right can have brainliest
Answer:
Y = 21
To solve this, do the inverse of division, multiplication. Multiply 3 by the result, 7, and you get 21 as your answer to the missing digit.
The sum of the first 10 terms of an arithmetic series is 100 and the sum of next 10 300 .Find the series.
Let a be the first term in the sequence, and d the common difference between consecutive terms. If aₙ denotes the n-th term in the sequence, then
a₁ = a
a₂ = a₁ + d = a + d
a₃ = a₂ + d = a + 2d
a₄ = a₃ + d = a + 3d
and so on, up to the n-th term
aₙ = a + (n - 1) d
The sum of the first 10 terms is 100, and so
[tex]\displaystyle \sum_{n=1}^{10} a_n = 100 \\ \sum_{n=1}^{10} (a + (n-1)d) = 100 \\ (a-d) \sum_{n=1}^{10} 1 + d \sum_{n=1}^{10} n = 100 \\ 10a+45d = 100[/tex]
where we use the well-known sum formulas,
[tex]\displaystyle \sum_{n=1}^N 1 = 1 + 1 + 1 + \cdots + 1 = N[/tex]
[tex]\displaystyle \sum_{n=1}^N n = 1 + 2 + 3 + \cdots + N = \frac{N(N+1)}2[/tex]
The sum of the next 10 terms is 300, so
[tex]\displaystyle \sum_{n=11}^{20} a_n = 300 \\ (a-d) \sum_{n=11}^{20} 1 + d \sum_{n=11}^{20} n = 300 \\ (a-d) \left(\sum_{n=1}^{20} 1 - \sum_{n=1}^{10} 1\right) 1 + d \left(\sum_{n=1}^{20} n - \sum_{n=1}^{10} n\right) = 300 \\ 10a+145d = 300[/tex]
Solve for a and d. Eliminating a gives
(10a + 145d) - (10a + 45d) = 300 - 100
100d = 200
d = 2
and solving for a gives
10a + 145×2 = 300
10a = 10
a = 1
So, the given sequence is simply the sequence of positive odd integers,
{1, 3, 5, 7, 9, …}
given recursively by the relation
[tex]\begin{cases}a_1 = 1 \\ a_n = a_{n-1} + 2 & \text{for }n>1\end{cases}[/tex]
and explicitly by
[tex]a_n = 1 + 2(n-1) = 2n - 1[/tex]
for n ≥ 1.
Please help this mad hard
Answer:
First Net
Step-by-step explanation:
The first net will be the answer because you can see that the figure has a square base. The first net has a square base as well. Now, the side of the figure has equal triangles, and so does the first net. The first net fits the figure best.
Hope this helps :)
Mr. Marsh plans to tile the floor in his 6-foot by 8-foot front hall. If each tile is an 8-inch square. what is the minimum number of tiles needed to cover the floor?
The division is one of the four fundamental arithmetic operations. The number of tiles that will be needed to cover the entire area of the hall is 864.
What is Division?The division is one of the four fundamental arithmetic operations, which tells us how the numbers are combined to form a new one.
The area of the hall with dimensions 6 feet by 8 feet are:
[tex]\rm \text{Area of the hall} = 6 feet \times 8foot =48\ feet^2[/tex]
The area of the tile is 8 square inches, therefore, the area of tile in square feet can be written as,
[tex]\rm \text{Area of the tile} = \dfrac8{12 \times 12}\ feet^2[/tex]
Noe, the number of tiles needed to tile the complete area of the hall is,
[tex]\text{Number of tiles needed} = \dfrac{\text{Area of the hall}}{\text{Area of the tile}}\\\\\\\text{Number of tiles needed} = \dfrac{48}{\frac8{12 \times 12}} = \dfrac{48 \times 12 \times 12}{8} = 864[/tex]
Hence, the number of tiles that will be needed to cover the entire area of the hall is 864.
Learn more about Division:
https://brainly.com/question/369266
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How can you use a
single measure to describe a data set?
Describing data Often we wish to describe a set of data with a single number, or a small set of numbers, in such a way that these values will yield enough information about the content of the data that we can produce a means of generating a similar set of data from this description.
1. Jenna and Marcus want to calculate who got the better score on different math quizzes. Jenna got 4 out of
5 questions correct. Marcus got 8 out of 10 questions correct. Who did better? Explain.
Answer:
Jenna got a better score
Step-by-step explanation:
She got a better score because Marcus missed 2 but Jenna only missed one.
What is the solution to this inequality? -m > 5
[A] m < -5
[B] m > -5
[C] m > 5
Answer:
the answer is A
Step-by-step explanation:
trust me yw <33
URGENT PLEASE HELP 50 POINTS AND WILL NAME BRAINLIEST An ice cream store has the pricing shown below. You want to determine the best value. The height of the cone is 4.5 in and the diameter is 2 in. The diameter of each scoop is 3 in. Assume the cone is stuffed full with ice cream. single is $3.50, double is $4.50, and triple is $5.50 Create a table showing the total cost of each size, the total volume of ice cream for each size, and the unit cost (per unit volume) of each size. Include units with your table entries. you dont have to create the table, but i really need the values!
u take x then multiply it by b, the add 9 to x then we will get the answer xb9x, hope u understand;>
How many apples do you need to baked 3 apple pies if each pie need 5 apples?
Answer:
15
Step-by-step explanation:
Each pie requires 5 apples
5x3=15
Answer:
Step-by-step explanation:
1 apple pie = 5 apples
3 apple pies x 5 apples = 15 apples
Please help me thank you!
Christine exercises more than 40 minutes per day.
Use t to represent Christine's amount of exercise (in minutes per day).
Answer:
t=40+
Step-by-step explanation:
I couldn't really tell what you meant by that question
HELP ME PLEASEEE URGENT I’ll mark the brainiest!!
216.66
169π-100π=69π
69*3.14= 216.66
Without graphing, find the slope of the line that goes through (-3, 1) and (1,3).
Answer:
1/2 i think using a app brjejfj
Alguien podra ayudarme en pregunta numero 8
Answer:
jb
Step-by-step explanation:
9
Help please!! MY LIFE DEPENDS ON THIS
Answer:
D
Step-by-step explanation:
A total of 18 teams made 26 or more feild goals.
can anyone help find the area pls ty
Answer:
53.72
Step-by-step explanation:
apply area of triangle and rectangle and add them
Pls pls pls pls help po
a - 1 = 70; a = 71 solution or not a solution??
solution
hope it helps...!!!
A person with type O blood can donate red blood cells to anybody because type O blood is the universal blood type. About 44% of the US population has type O blood. University High held a blood drive where 50 students donated blood.
Part A: What is the probability that exactly 25 of the students had type O blood?
Part B: What is the probability that at least 25 of the students had type O blood?
Answer:
Part A.
k= 25
p= 44% = 0.44
n= 50
P(x = k) = (nk) p^k (1 - p) ^n - k
P(x = 25) = (50 25) (0.44)^25 (1 - 0.44) ^50 - 25
50!/25!(50 - 25)!
50!/25!(25)! = 1.264106 x 1014
P(x=25) = (1.264106 x 1014)(0.44)^25(0.56)^25
= 0.07812
= 7.8% probability that exactly 25 students have type O blood
Part B.
Do the same math you did above. Just replace 25 with 26 and 27 :)
25 = 7.8% probability
26 = 0.01851
= 1.8% probability
27 = 0.00405
= 0.4% probability
The exam scores in Bryan's class are Normally
distributed with a mean of 88 points and a standard
deviation of 1.5 points.
Exam Scores
83.5 85 86.5 88 89.5 91 92.5
Score
Which statements are true? Check all that apply.
□ About 16% of all exam scores are less than 86.5
points.
About 16% of all exam scores are greater than 89.5
points.
About 68% of the test scores fall between 85 and 91
points.
About 84% of all exam scores are less than 89.5
points.
About 84% of all exam scores are greater than 89.5
points.
0
Using the Empirical Rule, it is found that the correct statements are given by:
About 16% of all exam scores are less than 86.5 points.About 16% of all exam scores are greater than 89.5 points.About 84% of all exam scores are less than 89.5 points.What does the Empirical Rule state?It states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.Approximately 95% of the measures are within 2 standard deviations of the mean.Approximately 99.7% of the measures are within 3 standard deviations of the mean.We also have to consider that the normal distribution is symmetric. Then, alog with the mean of 88 and standard deviation of 1.5, the correct statements are given by:
About 16% of all exam scores are less than 86.5 points(more than 1 standard deviation below the mean, the percentage, considering the symmetry, is 0.5 x 32 = 16%).About 16% of all exam scores are greater than 89.5 points, due to the same explanation as above.About 84% of all exam scores are less than 89.5 points, as the percentage is 50%(all below the mean) + 50% x 68%(one standard deviation above the mean) = 84%.More can be learned about the Empirical Rule at https://brainly.com/question/24537145
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Answer:
Step-by-step explanation:
Fill in the correct values in the statements.
About 68% of the observations will fall within
⇒ 1.5 points of the mean of
⇒ 88 points.
About
⇒ 95% of the observations will fall within 3 points of the mean.
About 99.7% of the observations will fall within
⇒ 4.5 points of the mean.
You want to bake a 20" diameter pizza. Give exact answers.
a. What should be the circumference of the pan?
b. What is the area of the pizza?
c. If you cut the pizza into 8 congruent slices, what is the area of one slice?
d. What is the length of the crust of one slice?
Step-by-step explanation:
pizza = circle
the area of a circle is
pi×r²
r = radius (half of the diameter). in our case 20/2 = 10".
the circumference of a circle is
2×pi×r
again, r = radius.
in our case that gives us
a.
2×pi×r = 2×pi×10 = 20×pi = 62.83185307... "
b.
the area of the pizza is
pi×10² = 100×pi = 314.1592654... in²
c.
it is 1/8 of the whole area, of course.
314.1592654... / 8 = 39.26990817... in²
d.
it is 1/8 if the whole circumference, of course.
62.83185307... / 8 = 7.853981634... "
PLSSSSSSSSSSSSS HELPPPPPPPPPPPPPPP
Choose the inequality represented in the graph.
A. y ≥ -4/5x - 3
B. y > -5/4x - 4
C. y > -4/5x - 3
D. y < -5/4x - 3
Answer:
C
Step-by-step explanation:
The line is dotted, so the sign is non-inclusive.
The dotted line is y = -(4/5)x - 3.
The section of the graph above the line is shaded so this inequality is "greater than".
So, putting these together, you get:
C. y > -(4/5)x - 3
Help! I got it wrong the first time
Answer:
The correct correspondence is B.
What is the vertex of f(x)=x2−8x+15 ?
Answer:
(4,-1)
i strongly believe that is the answer, pls mark as brainlist