Answer:
C = 188.4 cm
General Formulas and Concepts:
Math
π (pi) - 3.14159265Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightGeometry
Circumference Formula: C = 2πr
C is circumferencer is radiusStep-by-step explanation:
Step 1: Define
Radius r = 30 cm
Step 2: Solve for C
Substitute in r [Circumference Formula]: C = 2π(30 cm)[Circumference] Multiply: C = 60π cm[Circumference] Multiply: C = 188.4 cmQuestion 2: Sarah is fencing a vegetable garden to keep rabbits out. The hardware store sells
fencing for $25.50/m. Her family has $165 to spend. What dimensions should Sarah use to build a
garden with the greatest area? Round all answers to 2 decimal places.
Answer:
circle with circumference of 6.47m
Step-by-step explanation:
1. $165/$25.50=6.47058823529m
2. she should use a circle because they have the greatest area, the circle should have a circumference of 6.47m.
X+3y=-2
3x+4y=-6
USE SYSTEMS BY SUBSTITUTION.
X=
Y=
Answer:
X=-2
Y=0
Step-by-step explanation:
X+y=-2 = x=-2-y
3x+4y=-6
3(-2-y)+4y=-6
-6-3y+4y=-6
y=0
x+3(0)=-2
x=-2
Answer:
[tex]\boxed {\boxed {\sf (-2,0)}}[/tex]
Step-by-step explanation:
To solve by substitution we must first isolate 1 variable in an equation.
Let's use the first equation.
[tex]x+3y= -2[/tex]
Subtract 3y from both sides to isolate the variable x.
[tex]x+3y-3y= -2 -3y[/tex]
[tex]x= -2 -3y[/tex]
Now we can substitute the expression (-2-3y) in for x in the second equation.
[tex]3x+4y= -6[/tex]
[tex]3(-2-3y)+4y= -6[/tex]
Distribute the 3. Multiply each term inside the parentheses by 3.
[tex](3*-2)+ (3*-3y)+4y=-6\\-6-9y+4y=-6[/tex]
Combine the like terms on the left side.
[tex]-6-5y= -6[/tex]
Add 6 to both sides to isolate the variable.
[tex]-6+6-5y=-6+6\\-5y=0[/tex]
Divide both sides by -5.
[tex]-5y/-5=0/-5 \\y=0[/tex]
Now we know that y is equal to 0 and can substitute it into the first equation and find x.
[tex]x+3(0)=-2[/tex]
[tex]x+0=-2 \\x= -2[/tex]
x is equal to -2 and y is equal to 0.
4. What is the y-intercept of this equation?
y=7X-6
Answer:
-6
Step-by-step explanation:
[tex]y = 7x - 6 \\ \\ equating \: it \: with \\ \\ y = mx + b \\ \\ b = - 6 \\ y - intercept = - 6[/tex]
Question 4 Multiple Choice Worth 1 points)
(05.02 LC)
Find the measure of angle x in the figure below
A - 65°
B - 70°
C - 110°
D - 125
Answer:
B because 180 - 55 +55 u get 70 due to opposite sides x us also 70
Answer:
x=180-55-55=180-110=70° is your answer
Jane is organizing a fundraiser to buy a ping-pong table for the community center. The table costs $500.00. Jane is asking contributors to pay for an equal share of the cost of the table. She already has five contributors lined up. What function models the cost per share, C, with respect to the number of new contributors, n? How many new contributors must Jane recruit in order for the cost of each share to be $20.00?
Answer: 20
Step-by-step explanation: 500\20=25 but she already has 5 contributors so take that off you total answer
3. Mass changes when gravitational force changes.
A. True
B. False
Answer:
B. False
Step-by-step explanation:
Mass doesn't change when gravitational force changes, but the weight does change.
Answer:
Step-by-step explanation:
True
hope that helps
mark me brill please
How to solve -4-.2x+11=-.8x+10?
Answer:
x = 5
Step-by-step explanation:
-4-0.2x+11=7-0.2x=-0.8x+10
==>
0.6x=3
x=5
63 students choose to attend one of three after school activities: football, tennis or running.
There are 38 boys.
20 students choose football, of which 19 are girls.
19 students choose tennis.
5 girls choose running.
A student is selected at random.
What is the probability this student chose running?
Give your answer in its simplest form.
There are 60 mangoes, They are packed in 7 boxes. How many mangoes are there in each box and how many mangoes are left out?
Answer:
There are 4 mangoes left.
There are 8 mangoes in each box.
Step-by-step explanation:
60 / 7 (rounded) = 8
60 remainder 7 = 4
8 * 7 = 56
9 * 7 > 56
56 + 4 = 60
please mark me as brainliest
Find the value of x.
x
133°
133°
47°
[tex]\huge\underline\bold\blue{ƛƝƧƜЄƦ}[/tex]
Three angles are given to us and we all know that the sum of four sides of quadrilateral is 360⁰
so
133⁰ + 147⁰ + 47⁰ + x = 360⁰
x = 380⁰ - 367⁰
x = 13⁰
Hope it helps u
Patrick payed 12$ for 2 1/2 candy. How much did each pound of candy cost.
Complete the equation of the line whose slope is -2 and y-(0,8)
Answer:
Equation: y = -2x + 8
Step-by-step explanation:
REMEMBER: The slope intercept form is y - mx + b. In slope intercept form, m is the slope and b is the y-intercept.
There were 5 girls to every boy that attended the Spring Semester Mixer last year. At this rate, how many attended the mixer if 150 girls attended the mixer,
Answer:
150:30
Step-by-step explanation:
It's essentially saying 5:1, 5 girls to one boy.
so with this in mind.
150:x
150/5
30
therefore
150:30
Answer:
30 boys attended the mixer. ( Wow 5 girls for a boy thats alot )
Step-by-step explanation:
1. Divide 150 girls by 5 ( 5 for every boy ) = 30 boys.
Thats it lol.
Btw can I have brainliest if I got it correct please?
please help mee!! will mark brainliest! "the Kuna Caveman football team won 75% of their games. If they won 9 games, how many games did they play?"
Answer:
12 games
Step-by-step explanation:
Let x be the number of games played
The y won 75% of the games played and that was 9
x * 75% = 9
Change to decimal form
x * .75 = 9
Divide each side by .75
x * .75 /.75 = 9/.75
x =12
They played 12 games
Answer:
Step-by-step explanation:
75g/100=9
g=900/75
g=12
Zac and Lynn are each traveling on a trip. So far, Zac has traveled 123.75 miles in 2.25 hours. Lynn leaves half an hour after Zac. So far, she has traveled 105 miles in 1.75 hours. Assume Zac and Lynn travel at constant rates.
Complete question is;
Zac and Lynn are each traveling on a trip. So far, Zac has traveled 123.75 miles in 2.25 hours. Lynn leaves half an hour after Zac. So far
she has traveled 105 miles in 1.75 hours. Assume Zac and Lynn travel at constant rates.
Let a represent the number of hours that have elapsed since Zac started traveling. Let y represent the number of miles traveled. Write a system of linear equations that represents the distance each of them has traveled since Zac left on his trip.
Assume Zac and Lynn continue to travel at the same constant rates and make no stops.
Determine the solution of the system of linear equations.
Answer:
Zac: y = 55a
Lynn: y = 60(a - ½)
6 hours after Zac started traveling, both Zac and Lynn would have covered 330 miles each.
Step-by-step explanation:
Zac has traveled 123.75 miles in 2.25 hours. Since he travels at constant speed, we can say;
zac's speed = 123.75/2.25 = 55 mi/hr
Similarly, Lynn traveled 105 miles in 1.75 hours. Thus, since she travels at a constant speed;
Lynn's speed = 105/1.75 = 60 mi/hr
Now, we are told that a represents the number of hours that have elapsed since Zac started traveling and y represents the number of miles traveled.
Thus;
a hours after Zac started travelling, his distance covered will be;
Zac: y = 55a
Now,for Lynn, since she started ½ an hour after Zac, it means a hours after Zac started, she had traveled (a - ½) hours.
Thus, Lynn's distance traveled after Zac started = 60(a - ½)
Lynn: y = 60(a - ½)
The solution will be when they have travelled equal distances a hours after Zac started. Thus;
55a = 60(a - ½)
55a = 60a - 30
60a - 55a = 30
5a = 30
a = 30/5
a = 6 hours
Putting 6 for a in y = 55a, we have;
y = 55 × 6
y = 330 miles
The graphs of two linear equations are shown.
y = 3x – 3
y= 2x - 8
Which is the solution of this system of equations?
the median is the ____ of an ordered data set
A. end
B. the most occurrences of a number
C. middle
D. average
Answer:
C. middle
Step-by-step explanation:
Stats practice problem
Answer:
ummmm
Step-by-step explanation:
both of your images are blocked
Dwayne's Tea Shop has caffeinated tea and decaffeinated tea. The tea
shop served 63 caffeinated teas and 27 decaffeinated teas. What
percentage of the teas served were caffeinated?Write your answer using
a percent sign (%).
Gia receives an allowance of $2 a week and already has $20 in savings. Michael receives an allowance of $3 a week and already has $5 in savings. Gia and Michael both save their entire allowance. After how many weeks, will Gia and Michael have the same amount in savings? How much money will they have?
Answer:
After 15 weeks, Gia and Micheal will both have $50 in savings.
Step-by-step explanation:
For Gia:
We start at $20 since she already has $20 in savings, we will add that to how much Gia will receive in 15 weeks.
Gia receives $2 a week and therefore in 15 weeks she will have $50.
= 2x15 = $30
= 30+20 = $50
For Micheal:
We start at $5 since he already has $5 in savings, we will add that to how much Micheal will receive in 15 weeks.
Micheal receives $3 a week and therefore in 15 weeks he will receive $50
= 3x15 = $45
= 5+45 = $50
2a2 + -1 2-a) +36 ; a=5, b=0
Answer:
the answer is 39
Step-by-step explanation:
hope that helps
Answer:
Hey mate.....
Step-by-step explanation:
This is ur answer....
2a2 + (-1×2-a) +36
= (2×5×2) + (-1×2-5) + 36
= 20 + (-7) + 36
= 56 + (-7)
= 56 - 7
= 49
Hope it helps you,
Mark me brainliest pls...
Follow me!!!! ;)
Expand and simplify 3(3x+3)-3x(4x+2)
Answer:
−12[tex]x^{2}[/tex]+3x+9
Step-by-step explanation:
=(3)(3x)+(3)(3)+−12x2+−6x
=9x+9+−12x2+−6x
Combine Like Terms:
=9x+9+−12x2+−6x
=(−12x2)+(9x+−6x)+(9)
=−12[tex]x^{2}[/tex]+3x+9
Find the value of x round to the nearest tenth
Answer:
sin 76 = 13/x
x=13/sin 76
x=13.3979771816
x=13.4
Given that angles ABC ~ DEF, solve for x and y.
HELP PLEASE!!
Question
A company discovers that to produce x = 980 new electronic parts, it will cost y = $86,720. To produce 750 new
electronic parts, it will cost $67,400.
Compute the slope of the costs and choose the most accurate statement from the following:
Answer:
84 increasing rate
Step-by-step explanation:
I can't seem to get this problem factored
40y squared + 44y+12
Answer:
4(2y+1)(5y+3)
Step-by-step explanation:
........
(a) Find 6% of 350 (b) Find 25% 80 (c) Find 15% of 35.00
% is read as percent, and cent means 100.
In this case 6% is 6 out of 100 or 6/100.
so 6%*350=350*6/100=21
The second case its 25%*80=25/100*80=20
The third case, its 35*15/100=5.25
Solve the question below
Answer:
Step-by-step explanation:
Angle DAB = angle GAM =62°
In a science experiment, Katrina needs to know the mass of a seed pod.
She measures the mass of 8 seed pods as 10.4g.
What is the mass of 1 seed pod?
Answer:
1.30g
Step-by-step explanation:
The mass of 8 seed pods is equal to 10.4g.
10.4g = 8 pods
Total mass / Total pods = Individual pod weight
10.4g / 8 pods = 1.30g per pod
Lets check our work to confirm:
1.30g x 8 pods = 10.4g
Need help with 8! Please show your work!!!!! Appreciate it! Have a nice day