Answers
To start solving the exercise, we obtain as data:
π = 3r = 3 ftWe apply as a formula:
A = πr², whereA = areaπ = pir = radiusWe apply the formula and solve:
A = π r²A = 3× (3 ft)²A = 3 × 9 ft²A = 27 ft²Therefore, the area of the circle is 27 ft².
Answer: 27ft²
Step-by-step explanation: Soln:
Given that,
π=3
Radius(r)=3ft.
We have,
A = π r²
A = 3* (3)²
A=3*9
A=27ft²
Related Questions
8TH GRADE MATH 100 POINTS+BRAINLIEST - Factor Quadratic equations- please write out the steps, explain simply, and possibly provide a couple rules to remember for questions like these in the future. Any offensive answers or ones for the sake of points will be reported THANKS SO MUCH!!!
Also, 5 more 8th grade math questions are coming–GIVING AWAY 600 POINTS
Answers
Hello,
We have : (a + b)² = a² + 2ab + b²
4x² + 20x + 25 = (2x)² + 2 × 2x × 5 + 5² = (2x + 5)² → answer B
Here, we have a = 2x and b = 5 !
Answer:
[tex]\textsf{b.} \quad (2x+5)^2[/tex]
Step-by-step explanation:
Given quadratic equation:
[tex]4x^2+20x+25[/tex]
To factor a quadratic in the form [tex]ax^2+bx+c[/tex], find two numbers that multiply to [tex]ac[/tex] and sum to [tex]b[/tex].
[tex]\implies ac=4 \times 25=100[/tex]
[tex]\implies b=20[/tex]
Factors of 100 that sum to 20: 10 and 10
Rewrite [tex]b[/tex] as the sum of these two numbers:
[tex]\implies 4x^2+10x+10x+25[/tex]
Factorize the first two terms and the last two terms separately:
[tex]\implies 2x(2x+5)+5(2x+5)[/tex]
Factor out the common term (2x + 5):
[tex]\implies (2x+5)(2x+5)[/tex]
Simplify:
[tex]\implies (2x+5)^2[/tex]
Learn more about quadratic equations here:
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100 POINTS+BRAINLIEST -8TH GRADE MATH- 4 LITTLE MULTIPLE CHOICE QUESTIONS
**3 of them are simplifying algebraic expressions- please explain how and some rules to remember when doing so.
**the last 1 is determining whether 2 lines are parallel, perpendicular, or neither. Please define each term and show how to find out.
THANKS SO MUCH!!!
Answers
Answer:
3x+y=6 is parallel
y=-3x-2
4x 2
----------- - ----------- 2/x+5
x^2-25 x-5
5 3
------ + ------- 8x+19/x^2+5x+6
x+3 x+2
Step-by-step explanation:
For which of the following graphs is y a function of x
Answers
Answer:
D
Step-by-step explanation:
Draw vertical lines on your graph if they pass through more than once it is not a function.
Answer:
D
Step-by-step explanation:
Use the vertical line test.
If 2 points have the same x coordinate, it is not a function
A fails
B fails
C fails
D passes
HELP PLEASE!!!! I NEED IT ASAP!!!!!!
Answers
Answer:
x=19
Step-by-step explanation:
●Alternate angles are equal
therefore, angle WYZ= angle YWX
2x= angle YWX
●Angles within a triangle sum up to 180 degrees
=3x-5+2x+90=180
▪︎group like terms
=3x+2x+90-5=180
=5x+85=180
▪︎send all x terms to one side of the equation
=5x=180-85
=5x=95
▪︎divide both side by the coefficient of x ; 5
=x=19
It is 10:30pm and my brain is not cooperating with me.
Answers
Answer:
[tex]v = 180 {cm}^{3} [/tex]
Step-by-step explanation:
V= lwh or l *w*h
Length: 15
Width: 3
Height:4
V=15*3*4
V=180
Step-by-step explanation:
so, you can't do any basic calculations anymore ? turned into a true couch potato/vegetable ?
the volume of a block is
length × width × height.
similar to the 2 dimensional problem of the area of a rectangle : length × width.
now we have one more dimension. that's all.
V = 15 × 4 × 3 = 180 cm³
The equation 4x2 + 8x + 15 = 0 is being rewritten in vertex form.
Fill in the missing step.
Given 4x2 + 8x + 15 = 0
Step 1 4(x2 + 2x ___) + 15 ___ = 0
Step 2 blank
Step 3 4(x + 1)2 + 11 = 0
A:4(x2 + 2x + 1) + 15 − 4 = 0
B: 4(x2 + 2x + 1) + 15 − 1 = 0
c: 4(x2 + 2x + 2) + 15 − 2 = 0
D: 4(x2 + 2x + 4) + 15 − 4 = 0
Answers
Is this correct?
A boy earned $50. He saved $42 and used the rest to buy some text books. How much was each text book if he bought 4 texts books
Answers
$8 / 4 = 2
The boy bought 4 textbooks costing $2 each!
Hope this helps!
Answer:
each book was 2 dollars
Explanation:
boy earned $50 he saved 42 dollars and used the rest ($8) to buy textbooks and he bought 4 text books that means each textbook is 2 dollars how (8÷4=2) .
hope it helps and Is what ur looking for.
Let point P be (3, 5) and Q be (8, -3). Let T be the point on segment PQ such that PT:TQ = 1:2. Find
the coordinates of point T, and explain why this point T must be the point on segment PQ such
that PT:TQ = 1:2
Answers
Answer:
(14/3, 7/3)
Step-by-step explanation:
8-3=5, and 5/3+3=14/3.
5--3=8, and 8/3+5=7/3.
This has a ratio of 1:2 because the length is divided into three and 1 is separate from the other two.
Evaluate the given algebraic expressions replacing x with -2 and y with 1
[tex]3x^{2}[/tex]
Answers
Answer: -6
Step-by-step explanation: -2^1 = -2
3 x -2 = -6
Please help! Really easy!!
___ - 2.86 = 3.57
2.5 x ____=0.625
___/5.5=0.55
Answers
6.43
second one is
.25
third one is
3.025
2.) 0.25
3.)3.025
100 POINTS+BRAINLIEST 8TH GRADE MATH PT 4: this one is similar to #3
Answers
Answer:
b. x + (x + 2) + (x + 4) = 39
Step-by-step explanation:
Definitions
Integer: a whole number that can be positive, negative or zero.e.g. ..., -3, -2, -1, 0, 1, 2, 3, ...Odd number: an integer that when divided by two leaves a remainder (so not a multiple of 2). For example, 1, 3, 5, 7 are all positive odd numbers.Consecutive: following one after the other in order.
The sum of three consecutive odd integers
Let x be the first odd integer.
As there is a difference of 2 between consecutive odd integers, the next odd integer after x will be (x + 2).
Therefore, the next odd integer after (x + 2) will be (x + 2) + 2 = (x + 4).
So "the sum of three consecutive odd integers is thirty-nine" is:
x + (x + 2) + (x + 4) = 39
To solve
⇒ x + (x + 2) + (x + 4) = 39
⇒ x + x + 2 + x + 4 = 39
⇒ 3x + 6 = 39
⇒ 3x = 33
⇒ x = 11
Therefore, the three consecutive odd numbers are 11, 13 and 15.
Explanation
how many four digit natural numbers can be formed using the digits 1,2,3,4 if repitition is not allowed
Answers
Heather is planning a dessert display. She needs 4 ounces of strawberries for each dessert.
Part A: Heather is not sure how many desserts she will make. Write an expression with a variable that represents the amount of strawberries Heather needs for the desserts. Identify what the variable represents.
Answers
biscuits sweet strawberry
X= the dessert
4= ounces per dessert
If the two spinners below are spun, what is the probability that the numbers will add to more than 7?
Answers
Answer:
0
Step-by-step explanation:
There are 12 possible outcomes, but no outcome will result in a sum greater than 7. So the probability is 0/7 = 0.
1 1
1 2
1 3
2 1
2 2
2 3
3 1
3 2
3 3
4 1
4 2
4 3
Finnish the sentences based off the graph
Thanks :) 30 points!!!
Answers
Answer:
Step-by-step explanation:
2. y interecept --> y = 1
3. pi
4. 1, 0
A class of students recorded the amount of time spent on homework on Monday night. The times are recorded below, in ours. Use the data to answer question 8-10
1 3/4 2 1/4 2 2 3/4
1 1 3/4 1 1/4 3
3 1/4 3 3/4 2 2
8. Make a line plot of the data shown above. Be sure to include a title and correctly label each value
9. Julie says the most amount of time spent on homework is 1 1/2 times the lest amount of time spent on homework. Is she correct? Explain.
10. Daniel says that more than half the students spent 2 1/2 hours or more on homework. Liz says more that half the students spent less than 2 1/2 hours on homework. Who is correct? Explain.
I need help ASAP
Answers
The smallest number is 2 is the smallest so make a line plot and put the smallest number then the next biggest number then to the biggest and put a x over how many times that was used
what is √75 in simplifed form?
Answers
Answer:
5√3
Step-by-step explanation:
3 friends shared 48 pineapples equally among themselves. One of the friends sold all his pineapple each at $5 how much did he get from selling the pineapples?
Answers
Answer: $80
Step-by-step explanation:
Step 1: Find how much each person got
48 pineapples shared amongst 3 people
48÷3= 16 pineapples each
Step 2: Find how much he earned
16 pineapples for $5 each
Total money made: 16x5= 80
$80 in all selling his share of the pineapples
hope this helps!!
The total amount of money the friend made from selling his pineapples is $80
How much did he get from selling the pineapples?Total pineapples = 48
Total friends = 3
Number of pineapples each friend takes = Total pineapples / Total friends
= 48/3
= 16 pineapples per friend
Cost of each pineapple = $5
Total amount the friend made from selling his pineapples = Cost of each pineapple × Number of pineapples each friend takes
= $5 × 16
=$80
Hence, the friend made $80 from selling his pineapples.
Read more on selling price:
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The table and the graph each show a different relationship between the same two variables, x and y:
A table with two columns and 5 rows is shown. The column head for the left column is x, and the column head for the right column is y. The row entries in the table are 3,210 and 4,280 and 5,350 and 6,420. On the right of this table is a graph. The x axis values are from 0 to 10 in increments of 2 for each grid line. The y axis values on the graph are from 0 to 550 in increments of 110 for each grid line. A line passing through the ordered pairs 2, 110 and 4, 220 and 6, 330 and 8, 440 is drawn.
How much more would the value of y be in the table than its value on the graph when x = 11?
Answers
Answer:
275
Step-by-step explanation:
HELP PLEASE!!!!!!!!!!!!!!!!!!!! I NEED IT ASAP!!!!!!!!!
Answers
x = 25
Can anybody give me an easy way to use prime factorization plssss
Answers
Answer: Step 1: Divide the given number by the smallest prime number. ...
Step 2: Again, divide the quotient by the smallest prime number.
Step 3: Repeat the process, until the quotient becomes 1.
Step 4: Finally, multiply all the prime factors.
Step-by-step explanation:
A locker is in the shape of right rectangular prism. Its dimensions are as shown.
What is the surface area of this locker?
Answers
PLEASE ANSWER: A camera usually sells for $68. Because it was slightly damaged, it sold for $59.90, what was the rate of the discount to the NEAREST PERCENT?
Answers
you are going to paint the sixth sector spinner shown.There are 4 colors to choose from. How many different ways can u paint this spinner if each color can be used more than once and there are no other restrictions
Answers
Answer:
There are 4096 options to choose from.
Step-by-step explanation:
6 sections each with 4 colours to choose from : 4⁶ = 4096
The spinner with 6 different parts and 4 different colors can be painted in 4⁶ ways.
What are permutation and combination?A permutation is an arrangement of things where order matters, AB and BA are two different permutations.
The combination is a selection of things where order does not matter, AB and BA are the same combinations.
Given, you are going to paint the sixth sector spinner shown and there are 4 colors to choose from also each color can be used more than once and there are no other restrictions.
∴ The first part can e painted in 4 different ways and as there are no restrictions every 6 parts can be painted in 4 different ways.
So, the total no. of ways to color this spinner with 6 different parts and 4 different colors are,
4×4×4×4×4×4 ways,
= 4⁶ ways.
learn more about permutation and combination here :
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Scientific notation, 8th grade math KA- correct answers only thx
Answers
Answer:
3.84 * 10^{-2}
Step-by-step explanation:
You can convert the first one into 0.041 as it is multiplied by [tex]10^{-2[/tex]. The second one can be converted into 0.0026 as it is multiplied by [tex]10^{-3[/tex].
[tex]0.041-0.0026=0.0384[/tex]. In scientific notation, this is [tex]3.84 * 10^{-2}[/tex].
A camera usually sells for $68. Because it was slightly damaged, it sold for $59.90, what was the rate of the discount to the NEAREST PERCENT?
Answers
Answer:
12%
Step-by-step explanation:
$68 - 59.9 = $8.1
$8.1/$68 = 0.11911764705
0.11911764705 x 100 = 11.911764705
11.911764705 is rounded up to 12
12%
So the average teacher salary is 61,463 per year.
The teachers in the first/second year only get 39.8%. How much money do the teachers get that are in their 1st or 2nd year?
Answers
Answer: Should be around $23,000
Step-by-step explanation:
39.8% of 61463
So 24,462.274
100 POINTS+BRAINLIEST: 8TH GRADE MATH PT 3- Write equations by simplifying polynomials Tyyy
((offensive answers or ones for the sake of points will be reported))
Answers
Answer:
d. 3x + 6 = 26
Step-by-step explanation:
Definitions
Integer: a whole number that can be positive, negative or zero.e.g. ..., -3, -2, -1, 0, 1, 2, 3, ...Even number: an integer that is exactly divisible by two. For example, 2, 4, 6, 8 are all positive even numbers.Consecutive: following one after the other in order.
The sum of three consecutive even integers
Let x be the first even integer.
As there is a difference of 2 between consecutive even integers, the next even integer after x will be (x + 2).
Therefore, the next even integer after (x + 2) will be (x + 2) + 2 = (x + 4).
So "the sum of three consecutive even integers is twenty-six" is:
x + (x + 2) + (x + 4) = 26
To solve
⇒ x + (x + 2) + (x + 4) = 26
⇒ x + x + 2 + x + 4 = 26
⇒ 3x + 6 = 26
(Please note that there are no three consecutive even integers that sum to 26, so the problem cannot be solved).
Find the quotient. 5 1/4 - 15
a. 7/20
b. 78 3/4
c. 2 6/7
d. 3 1/4
Answers
I believe the question you are asking is what 5 1/4 (otherwise known as 5.25) divided into 15 is.
Simply put, your question is 15 divided by 5.25 (or 5 1/4)
To solve this we can make the fraction 5 1/4 into an improper fraction. This makes the fraction to consist of a numerator and a denominator and no whole numbers. Converting 5 wholes into fourths would mean 5 times 4 which is 20. Therefore 5 converted into 1/4 ‘s is 20 1/4’s. This combined with the other 1/4 in the fraction 5 1/4 makes the improper fraction 21/4.
When you divide fractions you switch the numerator and denominator of the fraction on one side (usually the right side although it doesn’t matter as long as you only switch one fraction of the two) and multiply. 15 times now 4/21 is 60/21.
To simplify this you can divide the numerator and denominator by a common factor. We can start with 3, simplifying the fraction to 20/7. Now as you may notice in the answer choices they are all mixed numbers, consisting of a whole number as well as the numerator and denominator. 20/7 as a mixed number is 2 6/7 as you can have 2 times 7 (14) and then have 6 left so you have 2 wholes and 6/7 away from another whole. This makes C the answer
A card is chosen at random from a standard deck.
What is the probability of choosing a red card
that is not a queen?
(A) 1/13
(B) 3/26
(C) 6/13
(D) 51/52
Answers
Answer:
6/13
Step-by-step explanation:
There are 52 cards in a deck, and 26 of them are red. There are 2 red queens in a deck, so the probability of choosing a red card that is not a queen is 24/52 = 6/13.