Answer:
(2x+3)*(x+3)
Step-by-step explanation:
1. Find the product: (4 + 6i)(7-2i)
a. 11 + 4i
b. 28 - 12i
c. 40 + 34i
d. 62 - 12i
Answer:
c
Step-by-step explanation:
(4 + 6i)(7-2i)=
28-8i+42i-12i^2
i^2=-1, so
28+12-8i+42i
40+34i
answer is c
A 10-foot ladder touches the side of a building at a point 8 ft above the ground. At what height would a. 7-foot ladder touch the building if it makes the same angle with the ground as the longer ladder?
Answer:
5.6 ft
Step-by-step explanation:
sin a = 8/10
sin a = x/7
8/10 = x/7
x = 8/10 * 7 = 28/5 = 5.6 ft
How many integer values of x are there so that x, 12,and 9 could be the lengths of the sides of a triangle? Helppp me plzzzz this is due today!!!
Answer:
10.5 I think
Step-by-step explanation:
hope it helps
Y=Mx+b, where m= the slope and b=the y intercept Y=2x-4,slope=2andyintercept=
Answer:
slope =2
y intercept = (0,-4)
Step-by-step explanation:
y = 2x - 4
Since this is in the form y = mx+b where m is the slope and b is the y intercept
The slope is 2 and the y intercept is -4
slope =2
y intercept = (0,-4)
100 points! you just have to answer these all with purpose and try your hardest!
PLEASE HELP ME!! THIS IS ALREADY A WEEK OVERDUE :(((((((((((((((((((((((((((((
A local pet store sells a variety of animal supplies and pet accessories. The pet store has different sections for dogs, cats, birds, fish, reptiles, and other exotic pets.
1. A clerk at the pet store kept track of the number of fish purchased by customers during one week. Mary bought 1 fish, Ari bought 20 fish, Rodney bought 4 fish, Carissa bought 3 fish, Jacob bought 4 fish, Jack bought 1 fish, Jaleesa bought 2 fish, Andrea bought 5 fish, Geoff bought 1 fish, Becky bought 4 fish, Molly bought 1 fish, David bought 2 fish, Gina bought 7 fish, James bought 1 fish, Anessa bought 2 fish, Ted bought 1 fish, Sean bought 2 fish, Kerri bought 11 fish, Sammy bought 3 fish, Jameson bought 2 fish, Theresa bought 2 fish, Luz bought 2 fish, Tracy bought 4 fish, Jackson bought 5 fish, and Celia bought 7 fish.
(a) Complete a line plot that shows how many customers purchased specific numbers of fish. (2 pts)
(b) What number of fish has the highest frequency? (1 pt)
(c) What is the total number of fish purchased during the week? Explain and show your work. (1 pt answer, 1 pt for showing work)
(d) Which value in the data set is an outlier? (1 pt)
(Score for Question 2: ___ of 5 points)
2. The Humane Society has puppies for adoption. The weights, in pounds, of the puppies currently at the Humane Society are 17, 14, 13, 15, 21, 41, 18, 22, 20, 25 and 14.
(a) Create a stem-and-leaf plot of the weights of the puppies. (2 pts)
(b) What is the weight difference between the heaviest puppy and the lightest puppy? (1 pt for answer, 1 pt for showing work)
(c) How many puppies weighed at least 20 pounds? (1 pt)
Answer:
(Score for Question 3: ___ of 5 points)
3. Label all the following values using the box and whisker plot below: (1 point each)
(a) Minimum:
(b) Median (Q2):
(c) lower quartile (Q1):
(d) upper quartile (Q3):
(e) maximum:
(Score for Question 4: _____ of 4 points)
4. A clerk at a pet store kept track of customers who purchased at least one box of animal treats in one week. The following histogram shows how many boxes of treats customers purchased throughout the week.
(a) How many customers purchased animal treats that week? (1 point)
(b) Based on the labelled intervals, what is the maximum number of boxes that could have been purchased? (1 point)
(c) How many customers purchased fewer than 11 boxes of animal treats during the week? (1 point)
(d) From the information on the histogram, could you answer the following question: How many customers purchased 1 box of dog treats? (1 point)
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Step-by-step explanation:
Mary bought 1 fish, Ari bought 20 fish, Rodney bought 4 fish, Carissa bought 3 fish, Jacob bought 4 fish, Jack bought 1 fish, Jaleesa bought 2 fish, Andrea bought 5 fish, Geoff bought 1 fish, Becky bought 4 fish, Molly bought 1 fish, David bought 2 fish, Gina bought 7 fish, James bought 1 fish, Anessa bought 2 fish, Ted bought 1 fish, Sean bought 2 fish, Kerri bought 11 fish, Sammy bought 3 fish, Jameson bought 2 fish, Theresa bought 2 fish, Luz bought 2 fish, Tracy bought 4 fish, Jackson bought 5 fish, and Celia bought 7 fish.
Rewrite the numbers
1,20,4,3,4,1,2,5,1,4,1,2,7,1,2,1,2,11,3,2,2,2,4,5,7
1.
a: I can't draw a line plot, but I can tell you some tips.
Set the x as the different numbers that appear in the set
Set the y as the frequency of each number.
b: 2 fish has the highest frequency.
c: Add the terms. 97 is the total fish been bought
d: The outlier is 20 bought fish
2.
a: When making the stem and leaf plot, do it in this format
1| 7,4,3,5,8,4
and so on.
b: the heaviest puppy is 25 and the lightest is 13
so the range is 12
c: 4 puppies weighed at least 20 pounds
3. There are no following values, but for this I would make a box and whisker plot.
4. There is no histogram but it should be relatively easy if you know which aspect of the graph to use.
a: Find the frequency of each bar and add them.
b: the largest number of boxes is the interval that is the largest
c: Use the graph to find it
d: I can't do this without the graph.
The point (1, –5) is reflected across the y-axis.
A coordinate plane.
What are its new coordinates?
(–1, 5)
(1, –5)
(–1, –5)
(1, 5)
Answer:
(1, 5)
Step-by-step explanation:
Reflecting across the y-axis is the same thing as adding a negative to the y-value.
double negative 5 is the same thing as positive 5 so
(1, 5) is your answer
Answer:
d
Step-by-step explanation:
Help FAST Please. Quite simple and fast Third one
Answer:A
Step-by-step explanation:
Answer:
It is Transitive Property of Congruence
Hope this helps :)
The radius of a circle is 19 cm. Find its area in terms of pi
Answer:
Solve for area
A≈1134.11cm²
r Radius
19
cm
Solution
A=πr2=π·192≈1134.11495cm²
Answer: 1133.54
Step-by-step explanation:
The formula of area of a circle: A = [tex]\pi[/tex]r squared
All you have to do is plug the numbers in, so A= 3.14 (19) squared. Solve
19 times 19 = 361, and 3.14 times 361 = 1133.54
plzz answer will give you brainliest!!!
Answer:
I think C
Step-by-step explanation:
Hope it was Right.
please help me answer all of them
Answer:
1. 3:4
2. 1 : 3
3. 3 : 1
4. 1 : 5
5. 2: 5
Step-by-step explanation:
Answer:
1. 3:4 (because 9÷3 is 3 and 12÷3 is 4)
2. 1:3 (because 2÷2 is 1 and 6÷2 is 3)
3. 3:1 (because 21÷7 is 3 and 7÷7 is 1)
4. 1:5 (because 3÷3 is 1 and 15÷3 is 5)
5. 2:5 (because 4÷2 is 2 and 10÷2 is 5)
explain how to solve 3b=48. Give the solution in you explanation
Answer:
b=16
Step-by-step explanation:
1) Divide 3 on both sides.
2) 3 divided by 3 and 48 divided 3.
3) Now you're left with 16, so the value of b is 16.
Answer:
1) Divide both sides by 3
2) b=16
Step-by-step explanation:
To solve the equation, we want to find out what b is. In order to do this, we have to get b by itself. Perform the opposite of what is being done to the equation. Keep in mind, everything done to one side, has to be done to the other.
3b=48
3 and b are being multiplied (3b=3*b). The opposite of multiplication is division. Therefore, divide both sides by 3.
3b/3=48/3
The 3s on the left will cancel, and we are left with:
b=48/3
b=16
what is the simplified form of x + 7 / x + 3 + x - 4 / 3
Answer:
Step-by-step explanation:
[tex]\frac{x +7}{x+3}+\frac{x-4}{3}=\frac{(x+7)*3}{(x+3)*3}+\frac{(x-4)(x+3)}{3(x+3)}\\\\=\frac{(x+7)*3+(x-4)(x+3)}{3(x+3)}\\\\=\frac{3x+21+x^{2}+3x-4x -12}{3x +9}\\\\=\frac{x^{2}+2x-12}{3x+9}\\\\[/tex]
Answer:
I hope this helps you thanks
A unicycle wheel has a diameter of 30 inches. How many inches will the unicycle travel in 6 revolutions?
Answer:
565.2
Step-by-step explanation:
Find the Area of the figure.
4x - 3
2x + 1
Answer:
4x 32x + 1 = 28x + 1
Step-by-step explanation:
4x-32x+1
=-28x+1
y=x^{2} +2x-8 determine the axis of symmetry, the vertex point and find the roots by factoring
Answer:
We have axis of symmetry in [tex]x=-1[/tex]
The vertex point is [tex](-1, -9)[/tex]
The roots by factoring are
[tex]x=-4[/tex]
[tex]x=2[/tex]
Step-by-step explanation:
We have the function:
[tex]f(x)=x^2+2x-8[/tex]
Factoring the quadratic equation:
[tex]y=(x+4)(x-2)[/tex]
When [tex]y=0[/tex]
[tex]0=(x+4)(x-2)[/tex]
[tex]x=-4[/tex]
[tex]x=2[/tex]
The vertex point is [tex](h, k)[/tex]
From the equation, we have [tex]a=1,\:b=2 \text{ and }\:c=-8[/tex]
[tex]$h=-\frac{b}{2a}$[/tex]
[tex]$h=-\frac{2}{2\cdot \:1}$[/tex]
[tex]h=-1[/tex]
We also got the axis of symmetry
In order to find [tex]k[/tex] just use the [tex]$h=x_{vetex}$[/tex]:
[tex]k=(-1)^2+2(-1)-8\\k=1-2-8\\k=-9[/tex]
Once [tex]a>0[/tex], we have the minimum at [tex](-1, -9)[/tex]
Answer:
x = -1 axis of symmetry
(-1,-9) vertex
x = -4 x=2 are the roots
Step-by-step explanation:
y = x^2 + 2x - 8
The axis of symmetry is
h = -b/2a
h = -2/ (2*1) = -2/2 =-1
x = -1
The x coordinate of the vertex is at the axis of symmetry
To find the y value substitute into the function
y = (-1)^2 +2(-1) -8
y = 1-2-8
y = -9
The vertex is at ( -1,-9)
Factor
What 2 number multiply to -8 and add to 2
4*-2 = -8
4+-2 = 2
y = ( x+4) (x-2)
Using the zero product property to find the roots
0 = ( x+4) (x-2)
x+4 =0 x-2 =0
x = -4 x=2 are the roots
Can someone help me with this question.
Answer:
Option A
Step-by-step explanation:
If a football team gains 15 yards on a play, it will be recorded as '+ 15' or '15'.
All other options would be represented by '-15', and not '15' that is asked in the question. A withdraw is taking away money, a number 'below zero' would be negative, and losing 15 points would be represented as '-15'.
Option A should be the correct answer.
Answer:
The answer to your problem is Option A or 1: A football team gains 15 yards on a play.
Step-by-step explanation:
This is the answer because all of the other situations have an integer of -15. Like LOSING points, or 15 meters BELOW all signify that those situations include a negative number. Your question is asking for a positive 15 not negative so Option 1 is the correct answer.
a bag containes 8 white marbels and 48 green marbles. If a representative sample contains 2 white marblesthen how many green marbles would you expect it to contain?
Answer:
12
Step-by-step explanation:
8 white marbles and 48 marbles
each sample contains 2 white
so first
8 divide 2 = 4
then second
48 divide 4= 12
hope this helps
Jessica has 12 square tiles that she
wants to use to make rectangles. Find 3
different rectangles she can make using
all 12 square tiles in each of the
rectangles. Include the area and
perimeter of each rectangle. Then
compare the areas and perimeters.
Answer:
List the factors of 12
1,12
2,6
3,4
That is the side lengths of the 3 rectangles
All the areas will be 12 because they are the factors 12
factors multiply to be a number
(length + width) x 2 = perimeter
1+12=13x2=26
1 by 12 has a perimeter of 26 and area of 12
2 by 6 has a perimeter of 16 and area of 12
3 by 4 has a perimeter of 14 and area of 12
Hope this helps. If you have any questions you can ask
Step-by-step explanation:
Critical Thinking Problem
Here you have a ‘magic’ square. The sum (+) of any 3 numbers added across (→), down (↓), or diagonally
( ↘, ↙) should have the same sum.
You can write and solve equations to fill in the missing numbers on the table. Only write the numbers on the table, not the equations.
The magic sum for this square is 465.
248
31
217
62
Answer:
Top Right: 186
Center: 155
Center Middle: 279
Center Left: 93
Bottom Left: 124
PLEASE HELP!!! 25 POINTS
An 80% confidence interval for a proportion is found to be (0.52, 0.58). What is the sample proportion?
Answer:
Answer: 55
Step-by-step explanation:
HELP ASAP PLEASE !!!
Parallel Line and Irlangte
What is the value of x?
Enter your answer in the box.
Five multiplied by the sum of 6 and a number is the same as 42 more than the number. Find the number.
If n is "the number", which equation could be used to solve for the number?
Answer:
number is 3 .equation below
Step-by-step explanation:
5(6+n)=n+42
30+5n=n+42
5n-n=42-30
4n=12
n=3
Simplify into one fraction:
4/x+3-2/x-5
Answer:
[tex]=\frac{2-2x}{x}[/tex]
Step-by-step explanation:
Hope this helps!
A concrete pillar has the shape of a cylinder. It has a diameter of 8 meters and a height of 9 meters. If concrete costs $87 per cubic meter, how much did the concrete cost for the pillar?
Answer:
Cost, C = $28410.72
Step-by-step explanation:
We have, a concrete pillar has the shape of a cylinder.
Diameter of pillar is 8 m and ts height is 9 m
If concrete costs $87 per cubic meter, it is required to find the concrete cost for the pillar. For this lets find the area of cylindrical shape. So,
[tex]A=2\pi rh+2\pi r^2\\\\A=2\times 3.14\times 4\times 9+2\times 3.14\times 4^2\\\\A=326.56\ m^2[/tex]
The cost of pillar at the rate of $87 per cubic meter will be :
[tex]C=326.56\times 87\\\\C=\$28410.72[/tex]
Solve for x and y.
A. x = 13.3 y= 16.7
B. x = 13.3. y = 12.5
C. x = 7.5, y = 16.7
D. x = 7.5. y= 12.5
hey question do you still need help answering this cuz I noticed you posted this a while ago so I'm not sure.....let me know!
Find the area of the shaded region.
Answer:
A=16
Step-by-step explanation:
A= 1/2*b*h
A=1/2*4*8
A=16
Which function is shown in the graph below?
Answer:
I think y=log0.5x
Step-by-step explanation:
Answer: It's D, y=log6x
Step-by-step explanation: Edge
What is the domain of the function y= Vx?
Answer:
solution is the third one
-mplete the table.
Percent of Discount
Sale Price
Original Price
80%
$90
Answer:
You will pay $18 for a item with original price of $90 when discounted 80%. In this example, if you buy an item at $90 with 80% discount, you will pay 90 - 72 = 18 dollars.
Step-by-step explanation:
Answer:
Original Price is $450
Step-by-step explanation:
(Discounted price) = (100 percent - discount percent) x (original price)
90 = (100%- 80%) x y
y = 90 / 0.20
= 450
plz i justt whant awnser will be marked brillent i will report if ur here for points!!
Answer:
Question 7: Distributive
You multiple the outside element by each element inside the parenthesis
Question 5: 1.2x + 12.3y
2.4(3x + 2y) - 1.5(4x - 5y) = 7.2x + 4.8y - 6x + 7.5y = 1.2x + 12.3y
Question 3: 1 (3/5)x - (3/10)y
(2/5)(4x - 3y/4) = (8/5)x - 6y/20 = 1 (3/5)x - (3/10)y
Question 2: 1 (7/15)x
(4/5)x + (2/3)x = (12/15)x + (10/15)x = (22/15)x = 1 (7/15)x
Question 1: -2x + 3y
(3/4)(8x-4y) - (2/3)(12x - 9y) = 6x - 3y - 8x + 6y = -2x + 3y
Hope this helps!
Answer:
Question 7: Distributive
Question 5: [tex]1.2x+12.3y[/tex]
Question 3: [tex]$1\frac{3}{5}x -\frac{3}{10}y $[/tex]
Question 2: [tex]$1\frac{7}{15} x$[/tex]
Question 1: [tex]-2x+3y[/tex]
Step-by-step solution:
Question 7
[tex]4(x-5)=4x-20[/tex]
Distributive property, [tex]a(b + c) = ab + ac[/tex]. It says that multiplying the sum of two or more addends (numbers or terms added together) by a number (a) will give the same result as multiplying each addend individually. It is the same as the distributive property of multiplication over subtraction, except it will give the difference.
Question 5
[tex]2.4(3x + 2y) - 1.5(4x - 5y)[/tex]
Use the distributive property:
[tex]7.2x+4.8y-6x+7.5y[/tex]
[tex]1.2x+12.3y[/tex]
Question 3
[tex]$\frac{2}{5} \left(4x-\frac{3}{4}y \right)$[/tex]
Use the distributive property again:
[tex]$\frac{8}{5}x -\frac{6}{20}y $[/tex]
[tex]$\frac{8}{5}x -\frac{3}{10}y $[/tex]
Now you have to convert [tex]$\frac{8}{5} $[/tex] to mixed form:
It will give 1 with remainder 3, therefore
[tex]$\frac{8}{5} = 1\frac{3}{5} $[/tex]
[tex]$1\frac{3}{5}x -\frac{3}{10}y $[/tex]
Question 2
[tex]$\frac{4}{5} x +\frac{2}{3} x$[/tex]
[tex]$\frac{4(3)}{5(3)} x +\frac{2(5)}{3(5)} x$[/tex]
[tex]$\frac{12}{15} x +\frac{10}{15} x$[/tex]
[tex]$\frac{22}{15} x$[/tex]
Mixed form again:
[tex]$1\frac{7}{15} x$[/tex]
Question 1
[tex]$\frac{3}{4} (8x-4y) -\frac{2}{3} (12x - 9y)$[/tex]
[tex]$6x-3y -8x +6y$[/tex]
[tex]-2x+3y[/tex]
