Answer:
-6
Step-by-step explanation:
2(-1)^2 + 8*-1 = 2*1+8*-1=2-8=-6
Answer:
-6
Step-by-step explanation:
f(-1) for x
2x^2+8x
2(-1)^2+8(-1)
2-8
-6
n − 23 ≥ 19 solve the inequality.
Answer:
n ≥ 42
Step-by-step explanation:
n -23 ≥ 19 add 23
n ≥ 48
The diameter of a circular park is 98 m. Find the cost of fencing it at $4 per meter
Answer:
Answer. circumference = 151 m ( appr.) Ans :- The cost of fencing is Rs 604 .
The coordinates of the vertices of a rectangle are (-4, 3), (-1, 5),(3, – 1), and (0, – 3).
What is the perimeter of the rectangle? Round each step to the nearest tenth.
Enter your answer as a decimal in the box.
units
Answer:
Perimeter of rectangle is 23.34
Step-by-step explanation:
The coordinates of the vertices of a rectangle are (-4, 3), (-1, 5),(3, – 1), and (0, – 3).
What is the perimeter of the rectangle?
The formula to find perimeter of rectangle is: [tex]Perimeter=2(l+w)[/tex]
We need to find length and width first using the coordinates (-4, 3), (-1, 5),(3, – 1), and (0, – 3).
Let A=(-4, 3) B=(-1, 5) C=(3, – 1) and D=(0, – 3) according to the figure attached.
So, If we find distance of point AB it can be considered length of rectangle and distance of point AC can be considered width of rectangle
The formula used to find distance is: [tex]Distance=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
Finding distance AB, we have [tex]x_1=-4, y_1=3, x_2=-1, y_2=5[/tex]
[tex]Distance=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\Distance=\sqrt{(-1-(-4))^2+(5-3)^2}\\Distance=\sqrt{(-1+4)^2+(5-3)^2}\\Distance=\sqrt{(3)^2+(2)^2}\\Distance=\sqrt{9+4}\\Distance=\sqrt{13}\\Distance=3.61[/tex]
So distance between point A and B is 3.61
Finding distance AC, we have [tex]x_1=-4, y_1=3, x_2=3, y_2=-1[/tex]
[tex]Distance=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\Distance=\sqrt{(3-(-4))^2+(-1-3)^2}\\Distance=\sqrt{(3+4)^2+(-1-3)^2} \\Distance=\sqrt{(7)^2+(-4)^2} \\Distance=\sqrt{49+16} \\Distance=\sqrt{65}\\Distance=8.06[/tex]
So, distance between point A and C is 8.06
We have length = 3.61 and width = 8.06
Using formula of perimeter
[tex]Perimeter=2(l+w)\\Perimeter=2(3.61+8.06)\\Perimeter=2(11.67)\\Perimeter=23.34[/tex]
So, Perimeter of rectangle is 23.34
nobodys probably gonna answer this ): but if you can please do with the answers its for my homework :)
Answer
12 ) $100013 ) Y-Intercept = 1000 Slope = [tex]\frac{3000-2000}{4-2}[/tex] = [tex]\frac{1000}{2}[/tex] = [tex]\frac{500}{1}[/tex]14 ) [tex]\left(x^{1\ },\ y^{1}\right)\left(x^{2},\ y^{2}\right)[/tex] → [tex]\left(2\ ,\ 2000\right)\ \left(4\ ,\ 3000\right)[/tex] → [tex]\frac{3000-2000}{4-2}[/tex] → [tex]\frac{500}{1}[/tex]15 ) The meaning of the slope is the steepness of the line, in this graph, the meaning is 500 over 1.Hope this helps! <3
I didnt get it. please help
so the picture to the left is the first part and the one on the right is the second due to the lack of space on the screen
-9(m+3) +14=-49 please show work
Answer:
m=4
Step-by-step explanation:
−9(m+3)+14=−49
Step 1: Simplify both sides of the equation.
−9(m+3)+14=−49
(−9)(m)+(−9)(3)+14=−49(Distribute)
−9m+−27+14=−49
(−9m)+(−27+14)=−49(Combine Like Terms)
−9m+−13=−49
−9m−13=−49
Step 2: Add 13 to both sides.
−9m−13+13=−49+13
−9m=−36
Step 3: Divide both sides by -9.
−9m
−9
=
−36
−9
m=4
Evaluate 7 to the power of 2 pls help
Answer:
49
Step-by-step explanation:
Whenever you power something, you are just multiplying that number by itself amount of times you are powering
7 to the power of 2 is 7² = 49
The power (or exponent) of a number define how many times to use the number in a multiplication.
It is written as like a small number to the right and above the base number.
In this example the little "2" says to use 8 two times in a multiplication: 82 = 8 × 8 = 64.
To evaluate 7 to the power of 2.
7² = 7 × 7 = 49
Therefore, 7 to the power of 2 is 49.
Learn more about power here:
https://brainly.com/question/32651264
#SPJ6
A skateboarder travels 90 M in 20 seconds what is her speed
Answer:
4.5
Step-by-step explanation:
Answer:
9 meters per 2 second or 4.5
Step-by-step explanation:
divide both by ten : )
I need help with this question
Answer:
a
Step-by-step explanation:
Answer:
the first one
Step-by-step explanation:
Fifteen billiard balls are numbered 1 to 15. One billiard ball is selected at random. Determine the odds for and the odds against for (6 Points) a) selecting the number 7 b) selecting a number greater than 10
Answer:
Odds for & against selecting number 7 = 1/14 & 14
Odds for & against selecting number more than 10 = 4/11 & 11/4
Step-by-step explanation:
Odds for event = Prob (event) / Prob (no event)
Odds against event = Prob (no event) / Prob (event)
Odds for selecting number 7Prob (No. 7 chosen) = 1/15 , Prob (No. 7 not chosen) = 14/15
Odds for number 7 = (1/15) ÷ (14/15) = 1/14
Odds against number 7 = (14 / 15) ÷ (1/15) = 14
Odds for selecting number > 10Prob (No. > 10 chosen) = 4 / 15 , Prob (No. > 10 not chosen) = 11/15
Odds for No. > 10 = (4/15) ÷ (11/15) = 4/11
Odds against No. > 10 = (11/15) ÷ (4/15) = 11/4
Can someone please explain how to do this problem for me?
Three people eat 2 pizzas altogether. Both pizzas are the same size. One person eats 2/3 of a pizza. A second person eats 1/2 of a pizza. How much pizza does the third person eat?
Answer: The other person eats 5/6ths of a pizza
Step-by-step explanation:
put it into sixths
Answer:
5 /6
Step-by-step explanation:
may be 5/ 6 is the correct one
PLEASE HELP, MARKING BRAINLIEST!!
if 4m = 9n, then m/n=
Answer:
m/n=9/4
Step-by-step explanation:
4m = 9n
m/n=9/4
The volume of a fish tank is given by the function V (x) = (x + 7) (1-4) (2x + 3). Write a function describing a fish tank that has the same height but is
longer in length by 3 units and wider by 2 units.
Answer:
V(x)=(x+9) * (3) * (2x + 6)
Step-by-step explanation:
A fish tank is usually made in the shape of a 3-Dimensional rectangular prism. The volume of this shape can be obtained by using the following formula
V = w * h * l
in this formula w represents the width, h represents the heigh, l represents the length, and V represents the volume of the rectangular prism/fish tank. Therefore, we can use the function provided in the question and simply add 3 units to the length and 2 units to the width in order for it to work for our new fish tank.
V(x)=(x+9) * (3) * (2x + 6)
What is the distance between A and B? Round your answer to the nearest tenth.
Answer:
6.4
Step-by-step explanation:
Just plug in the distance formula.
(4+1)^2+(1-5)^2
(5)^2+(-4)^
25+16
41
(square root 41) and get 6.4
Misty correctly determined the equation of the linear function represented by the table of values below to be y = negative 2 x + 9 in slope-intercept form by using the ordered pairs (1, 7) and (2, 5).
Answer:
we can verify that the determined equation is the same as the equation determines by Misty, hence, we conclude that Misty had correctly determined the equation of the linear function.
Step-by-step explanation:
As Misty determined the equation of linear function:
[tex]y=-2x+9[/tex]
We need to check whether she has got the correct equation or not.
As the linear equation passes through the points [tex](1, 7)[/tex] and [tex](2, 5)[/tex].
Finding the slope:
The slope between two points [tex](1, 7)[/tex] and [tex](2, 5)[/tex]
[tex]\left(x_1,\:y_1\right)=\left(1,\:7\right),\:\left(x_2,\:y_2\right)=\left(2,\:5\right)[/tex]
[tex]m=\frac{5-7}{2-1}[/tex]
[tex]m=-2[/tex]
As we know the point-slope form is:
[tex]y-y_1=m\left(x-x_1\right)[/tex]
So, the equation of the line will be:
[tex]y-y_1=m\left(x-x_1\right)[/tex]
[tex]y-5=-2\left(x-2\right)[/tex]
Add 5 to both sides
[tex]y-5+5=-2\left(x-2\right)+5[/tex]
[tex]y=-2x+9[/tex]
From the above calculation, we can verify that the determined equation is the same as the equation determines by Misty, hence, we conclude that Misty had correctly determined the equation of the linear function.
A teacher writes the algebraic expression 24푐+5푚+19.99 to represent the cost of supplies. She bought 24 packages of pencils, 5 packages of markers, and a beanbag chair. Identify variables, coefficients, and terms in the expression. Tell what each represents.
A teacher write the algebraic expression 24c + 5m + 19.99 to represent the cost of supplies. She bought 24 packages of pencils, 5 packages of markers, and a beanbag chair. Identify variables, coefficients, and terms in the expression. Tell what each represents.
Answer:
Step-by-step explanation:
The algebraic expression is written by the teacher as:
24c + 5m + 19.99
Purchased product are:
24 packages of pencils, 5 packages of markers, and a beanbag chair.
The variables are;
packages of pencils; packages of markers; a beanbag chair.
The coefficients are;
24, 5 and 19.99
This representation implies that;
The teacher bought:
24 "c"olored pencils;
5 packages of "m"arkers; &
19.99 represent the cost of each beanbag chair.
Find the slope of the line.
Help!
Answer:
if the line is the blue one the answer is y=0
Step-by-step explanation:
(11x + 2y) - (5x – y)
Answer:
the answer is [tex]6x+3y[/tex]
Step-by-step explanation:
[tex]\mathrm{Remove\:parentheses}:\\=11x+2y-\left(5x-y\right)\\\\-(5x-y): -5x+y\\=11x+2y-5x+y\\Simplify:\\11x+2y-5x+y: 6x+3y\\\\=6x+3y[/tex]
hope this helps :)
Try using Symbolab, I use it all the time it gives the correct answer and it gives good explanations.
Marita's nose is 2 inches long and her head is 9 inches tall. Assume Mount Rushmore was carved using the same ratio. If Teddy Roosevelt's head is 60 feet tall, how long should his nose be? Round to the nearest foot, if necessary.
Answer:
13 1/3
Step-by-step explanation:
So the question is Marita's nose is 2 inches long and her head is 9 inches tall. Assume Mount Rushmore was carved using the same ratio. If Teddy Roosevelt's head is 60 feet tall, how long should his nose be? Round to the nearest foot, if necessary.
First divide 60 by 9 to figure out the first part of the ratio. So that is 60/9 or 6 2/3.
Then multiply 2 by 6 2/3 which is 13 1/3.
Finally when rounded to the nearest foot, it will be 13.
Ur welcome
Complete the square for the expression. Also, identify the resulting expression as a binomial squared.
x2 + 11x + ____
When completing the square is carried out on the quadratic [tex]x^2+11x[/tex] we get
[tex]x^2+11x+\dfrac{121}{4}[/tex]
when expressed as a binomial squared, we get
[tex]\left(x+\dfrac{11}{2}\right)^2[/tex]
To complete the square, we need to add a term to the expression
[tex]x^2+11x[/tex]
that would make it a perfect square. Generally, given the quadratic expression
[tex]x^2+bx[/tex]
to make it a perfect square, we have to add half the square of the coefficient of [tex]x[/tex]. That is, add [tex]\left(\frac{b}{2}\right)^2[/tex], or [tex]\frac{b^2}{4}[/tex] to the quadratic expression to get
[tex]x^2+bx+\dfrac{b^2}{4}[/tex]
which, when factored into a binomial squared becomes
[tex]\left(x+\dfrac{b}{2}\right)^2[/tex]
In our case, the quadratic [tex]x^2+11x[/tex] will become
[tex]x^2+11x+\dfrac{121}{4}[/tex]
and when expressed as a binomial squared, we get
[tex]\left(x+\dfrac{11}{2}\right)^2[/tex]
Learn more about completing the square here https://brainly.com/question/2055939
Answer:
[tex]x^{2}[/tex] +11x+ [tex]\frac{121}{4}[/tex]= [tex](x+\frac{11}{2} )^{2}[/tex]
Step-by-step explanation:
.
solve the system by graphing.
Answer:
(4,-5)
Step-by-step explanation:
I need help please!!!
Answer:
[tex]\frac{21}{100}[/tex]
Step-by-step explanation:
As you can see in the table, there are 21 people that have dogs but don't take walks. To find the probability, divide 21 by the total amount of people that attended the survey:
[tex]\frac{21}{100}[/tex]
This fraction can't be simplified.
The probability, represented as a fraction in simplest form, that a randomly selected person does not take walks but has a dog is [tex]\frac{21}{100}[/tex].
x ÷ 9 = 4
plz help fast
Answer:
36
Step-by-step explanation:
transpose
x= 4×9
x= 36
Answer:
x = 36
Step-by-step explanation:
If we were to switch around the equation to multiplication, we would have 9 x 4 or 4 x 9 which is 36.
Solve for the variable
10 + 25a = 75
Please help
Answer:
a = 2.6
Step-by-step explanation:
10 + 25a = 75
- 10. - 10
25a = 65
÷25. ÷25
a = 2.6
HOPE THIS HELPS
PLZZ MARK BRAINLIEST
Answer:13/5 or 2.6
Step-by-step explanation:
3 8 of your income is spent on your monthly bills, 2 5 is spent on food and clothing and 1 10 goes on entertainment. You put the remainder of your monthly income into savings.
Answer:
Fraction of saving = 1/8
Step-by-step explanation:
Given:
Spent on bills = 3/8
Spend on food = 2/5
Spend on entertainment = 1/10
Find:
Fraction of saving
Computation:
Fraction of saving = 1 - Spent on bills - Spend on food - Spend on entertainment
Fraction of saving = 1 - 3/8 - 2/5 - 1/10
By taking LCM
Fraction of saving = [40 - 15 - 16 - 4]/40
Fraction of saving = [5]/40
Fraction of saving = 1/8
7: +63
Factor the algebraic expression
Answer:
9
Step-by-step explanation:
Please help me 11 points i just joined today ;)
Answer:
I'm pretty sure it's B.
Answer:
B. y=-4/3x+4
Step-by-step explanation:
Find the y-intercept you will always find it on the y axis (in this case it is 4)
the slope is -4/3 because you go down 4 times (Going down is negative up is positive) and right 3 times (Right is positive and left is negative)
Slope= rise/run
Hope this helps!
A basketball player made 81 out of 100 attempted free throws. What percent of free throws was made?
Answer:
81%
Step-by-step explanation:
81 out of 100 is 0.81, which is 81%
Hope this helps plz mark brainliest if correct :D
Answer:
0.800
Step-by-step explanation:
Hope it Helps
Find the slope of the line that contains the following ordered pairs. Show all work.
8.
(18,-7) and ( 18, 2)
Formula:
Slope:
Answer:
see below
Step-by-step explanation:
slope = (y₂ - y₁) / (x₂ - x₁) <=== formula
= (2 - (-7)) / (18 - 18)
= 9 / 0
= 0 <=== slope
I’ll give the brainliest if you help meeeee