Evaluate A^2-B^2 for A = 4 and B = -5.
Answers
Answer:
9
Step-by-step explanation:
Related Questions
Help ASAP PLS! 20 Points:) I am reporting any fake responses so please be for real, I appreciate it!
The population of a species of starfish in the Gulf of Mexico is decreasing at an exponential rate, A(t) = A0e(kt) . Five years ago the population was 10,000. The current population is only 2000. When the population is 500, the starfish population cannot recover. When will this event occur?
Show your work and explain the process of solving this problem.
Answers
Explanation:
Can someone plz help me I’m really confused on this.
Answers
Answer: x:6
y:7
z:6
Step-by-step explanation:
Answer:
x = 5.25
y = 6
z = 5.25
Step-by-step explanation:
For x and z
x = z
3 x
---- = ----
4 7
Cross multiply: 21 = 4x
21/4 = x
x = 5.25
z = 5.25
For y
3 y
---- = ----
4 8
Cross multiply: 24 = 4y
24/4 = y
y = 6
You plant a tree that is 36 inches tall. After one year, the tree is 43 inches tall. Which expression describes the percent of increase in the tree's height? 3643×100 43−3643 43−3636×100 43−3643×100
Answers
Answer:
19.4%
Step-by-step explanation:
Given data
Initial height=36in
Final height= 43in
% increase= Final-initial/initial*100
Substitute
% increase= 43-36/36*100
%increase= 7/36*100
%increase= 0.194*100
%increase= 19.4%
Hence the increase is 19.4%
pls do this and thanks for helping me out
Answers
Answer:
45, 5 45, 5. 5, 45, 5, 45, 5
Step-by-step explanation:
ok
full explanations please!!
Answers
Answer:
x/7 = 7
x = 49
y/7 = 2
y = 14
Step-by-step explanation:
I'm not really confident about this since I kind of forgot but I'm pretty sure what I said is right.
Jennifer's grandma bought her a $50 savings bond when she was born. When Jennifer is 30 years old, the bond will have earned 110% in interest. How much will the bond be worth when Jennifer is 30 years old?
Answers
Answer:
105$
Step-by-step explanation:
We are told that she starts with 50$
We are also that after 30 years she earns 110% on interest
Given this information we need to find the value of the bond after the 30 years
To do so we take 110% of the initial value (50$) and add that to the initial value
So the answer = 110%(50) + 50
110%*50=55
55+50=105
So in 30 years the bond will be worth 105$
Hey, I really need help on this! This work is really hard and I just need a little help to get this right. Thank you!
Answers
length: 5
width: 2
height: 3
5x2= 10
10x3= 30
your answer would be 30
Answer:
40 cm³
Step-by-step explanation:
The information we have about the volume of Prism Y is only that it is 10 cm³ greater than the volume of Prism X. So, we have to first find the volume of Prism X.
The volume of a rectangular prism is found by multiplying the length, width, and height of the figure. X has dimensions of 2 × 5 × 3, so we will multiply these together.
2 · 5 · 3 = 30
The volume of prism X is 30cm³.
Prism Y is 10 cm³ greater than this.
30 + 10 = 40
Prism Y has a volume of 40 cm³.
Good luck :)
how do I solve this?? number 8
Answers
Answer:
135
Step-by-step explanation:
that line equals 180 degrees so just subtract 45 to get the value of x
Kurt and Maria's high school is having a newspaper drive.The goal is to collect 3,585 pounds of newspapers. So far, 21% of the goal has been reached. Kurt estimated the number of pounds of newspapers collected by finding 10% of 3,600 and then multiplying the result by 2. Maria estimated the number of pounds of newspapers collected by finding One-fifth of 3,600.
Answers
Options:
Who is right, and why?
a. Neither Kurt nor Maria is right, because 3,500 should be used instead of 3,600.
b. Kurt is right, because finding 1/5 of 3,600 is not a good way to approximate 21% of 3,585.
c. Maria is right, because finding 10% of 3,600 and multiplying the result by 2 is not a good way to approximate 21% of 3,585.
d. Both Kurt and Maria are right, because 3,585 should be rounded up to 3,600, and 21% of this amount can be approximated by either finding 10% of 3,600 and multiplying the result by 2 or by finding 1/5 of 3,600.
Answer:
d. Both Kurt and Maria are right, because 3,585 should be rounded up to 3,600, and 21% of this amount can be approximated by either finding 10% of 3,600 and multiplying the result by 2 or by finding 1/5 of 3,600.
Step-by-step explanation:
Given
[tex]Goal = 3585[/tex]
[tex]Collected = 21\%[/tex]
[tex]Kurt= 10\% * 3600 * 2[/tex]
[tex]Maria = \frac{1}{5} * 3600[/tex]
Required [Missing from the question]
Who is correct and why?
First, we calculate the actual amount collected.
[tex]Actual = Collected * Goal[/tex]
[tex]Actual = 21\% * 3585[/tex]
[tex]Actual = 752.85[/tex]
[tex]Actual = 753[/tex] --- approximate
Next, determine the estimate (round 3585 to 3600 and 21% to 20%)
[tex]Estimate = 20\% * 3600[/tex]
[tex]Estimate = 720[/tex]
Next, calculate Kurt and Maria's estimates
[tex]Kurt= 10\% * 3600 * 2[/tex]
[tex]Kurt = 720[/tex]
[tex]Maria = \frac{1}{5} * 3600[/tex]
[tex]Maria = 720[/tex]
Hence, Kurt and Maria are correct because of option (d)
Answer:
d
Step-by-step explanation:
jaques journal is 300 pages long he use 10% of the pages in his journal
how much pages does jques use in journal
Answers
Answer:
he uses 30 pages
Step-by-step explanation:
turn 10% into a decimal. this would be .10
.10 • 300=30
30 pages
There is a bag with only milk and dark chocolates.
5
The probability of randomly choosing a dark chocolate is 1
12
There are 25 dark chocolates in the bag and each is equally likely to be chosen.
Work out how many milk chocolates there must be.
Answers
Answer:
There are 300 milk chocolates in the bag.
Step-by-step explanation:
Since there is a bag with only milk and dark chocolates, and the probability of randomly choosing a dark chocolate is 1/12, if there are 25 dark chocolates in the bag and each is equally likely to be chosen, to determine how many milk chocolates there must be the following calculation must be performed:
1 = 25
12 = X
12 x 25/1 = X
300/1 = X
300 = X
Therefore, there are 300 milk chocolates in the bag.
Which choice is an irrational number?
A.
4
π
π
B.
√
6
2
C.
√
18
D.
21
.
989
Answers
Answer:
3 one good luck with the question
Answer:
dddddddddddddddddddddddddd
Complete the ratio table.
15
14
42
60
56
75
70
90
Answers
1 oz = 16 lb
What is 24 ounces converted to pounds?
Write your answer as a fraction in simplest form. 1)
24 ounces is equal to
pounds.
Answers
Answer:
1.5 pounds
Step-by-step explanation:
24-16 is 8, so divide 8 by 16 and you get 1.5
The value of 24 ounces to pounds is 1.5 pounds.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that 1 oz is equal to 1/16 pound. The value of 24 ounces to 16 pounds will be calculated as,
1 oz = 1/16 pounds
24 oz = 24 / 16
24 oz = 1.5 pounds
Hence, the value of 24 oz is 1.5 pounds.
To know more about an expression follow
https://brainly.com/question/25490005
#SPJ2
Find the radius of a circle with a circumference of 18.84 m. Use 3.14 for .
Answers
Answer:
2.9
Step-by-step explanation:
if you need me to explain just comment!
I hope i was able to help!!!!!
Answer: 3m
Step-by-step explanation:
c = 2[tex]\pi[/tex]r
18.84 = 2 x 3.14r
18.84 = 6.28 r
r = 3
(will give brainly) orde the values on the cards below in ascending order
Answers
Answer:
Step-by-step explanation:
Set 1
first of all we have to look at the negative numbers:
-99% = -0,99
-√80 = is almost 9
so :
-9,(9) ; -√80 ; -99%
then the positive numbers:
19% = 0,19
√9 = 3
1/9 = 0,11...
so
1/9 ; 19% ; √9
final answer:
-9,(9) ; -√80 ; -99% ; 1/9 ; 19%, √9
Set 2
descending order = from greatest to least
In this case we have to look at first at positive numbers
2/3 = 0,6
√23 = 4,...
20/3 = 6,...
23% = 0,23
so
20/3 ; √23 ; 2/3 ; 23%
negative numbers
-√34 = -5,...
so :
-4,(3) ; -√34
final answer:
20/3 ; √23 ; 2/3 ; 23% ; -4,(3) ; -√34
Mhanifa please help im almost done! I will mark brainliest :)
Answers
Answer:
Hello! Your answer is, 1 :A)28 AND 2:D)75 and CD AND 3:B)10 1/2
Step-by-step explanation:
Hope I helped! Brainiest plz!♥ Have a nice afternoon. Hope you make a 100%! -Amelia
Answer:
#5
x/ 12 = 7/3 x = 12*7/3x = 28 feetOption A#6
Consider letter position in names of figures:
A. QR and CD is the correct one#7
x/ 8 = 7/12x = 8*7/12x = 4 2/3One angle marked and one angle congruent as vertical
A. AA postulate; 4 2/3 is the correct optionThe equation 3x – 2y = 18 is in slope intercept
form.
If the y variable was isolated, it would be in
What
form.
(Use all lowercase letters when writing the answers)
Answers
Answer:
Y intercept form
Step-by-step explanation:
For her birthday party, Kelly invited her friends to a nearby roller-skating rink. The area of the rectangular rink is 1,530 ft2, and the length is 51 ft. What is the width of the rink?
Answers
Answer:
30ft
Step-by-step explanation:
1530ft2 divided by 51ft.
Solve for y is x=4:
y=2x+3
Answers
Answer:
y = 11
Step-by-step explanation:
Given:
x = 4
y = 2x + 3
y = 2(4) + 3
y = 8 + 3
y = 11
A group Students is painting a background piece for the school play what is the area of the part that is painted grey?
Answers
Answer:
108 inches
Step-by-step explanation:
6X6X3
A faraway planet is populated by creatures called Mizjigs. All Mizjigs are either black-footed or red-footed and either one-headed or two-headed.
Ragon, who lives on this planet, does a survey and finds that her colony of
650 contains 120 black-footed, one-headed Mizjigs; 200 red-footed, two-headed Mizjigs; and 300 one-headed Mizjigs.
Answers
Answer:
The correct awenser is 270 because when you fill out the chart the total black footed Mizjigs it is 270.
Step-by-step explanation:
I NEED HELP ASAP PLZ
a musician borrows $2,200 to buy a trumpet. The length of the loan is a 3 yr, and the total simple interest owed will be $792.
what is the annual rate of interest, written as a percent, on the musician's loan for the trumpet?
The formula for simple interest is l = Prt.
Answers
Did you ever get the answer to this?:
Step-by-step explanation:
What form is this quadratic? f(x)=2x^2+5x-10
Answers
Answer:
I hope that you thought so.
I recommend to you: Photomath
Jake washes cars. On monday he washed 18 cars for $90. On tuesday he washed 9 cars for $45. On wednesday he washed 12 cars for $60. What is the rate of change of Jakes earnings?
Answers
Answer:
the rate of change is 5
Step-by-step explanation:
$90 / 18 cars = $5 per car
$45 / 9 cars = $5 per car
$60 / 12 cars = $5 per car
That means the rate of change is 5 (5/1)
See attachment for reply.
Trent attaches his A+ test to the refrigerator with a circular magnet. Out of curiosity, he measures the magnet and calculates that it has a diameter of 4 centimeters. What is the magnet's area?
Answers
Answer:
12.6 cm²
Step-by-step explanation:
From the above question, the magnet is circular in shape
The area of a circle is given as:
= πr²
The area of the magnet = π × r²
Diameter = 4cm
r = Diameter/2 = 4cm/2 = 2cm
= π × (2cm)²
= 12.566370614cm²
Approximately = 12.6 cm²
The area of the magnet = 12.6cm²
2. How much will a $210 bicycle on sale for 15% off cost?
$195.50
$31.50
$178.50
O $241.50
Answers
Answer:
The answer would be $178.50
Step-by-step explanation:
Help
1: You answer 82% of the questions correctly on a 50-question test. How many questions do you answer incorrectly?
2: In a class, 60% of the students are girls. There are 21 girls in the class.
A: How many Students are in the class?
B: How many boys are in the class?
Answers
Answer:
1: 9 questions incorrect and 41 correct
2: There are a total of 35 students. 21 girls and 14 boys.
Joe has eaten 4/5 of a pizza and Jane has eaten 1/7 how many times more pizza has Joe eaten than Jane
Answers
5.6
Explanation
Joe Jane
4/5 1/7
28/35 5/35
28/5 = 5.6
Joe ate 5.6 times more than Jane
There are 1,065 students going on a trip. Each bus holds 60 students. How many buses are needed to hold all of the students?