A circle has a radius of square root 131 units and is centered at (0,-4.3).
Whats the equation of this circle?
Answer:
x^2 + (y + 4.3)^2 = 131
Step-by-step explanation:
The basic equation of a circle with center at (h, k) and radius r is
(x - h)^2 + (y - k)^2 = r^2. Here the center is (0, -4.3) and the radius is √131. Substituting as indicated, we get:
(x - 0)^2 + (y + 4.3)^2 = 131, or
x^2 + (y + 4.3)^2 = 131
simplify (3mn)4 (with work please)
Answer:
12mn
Step-by-step explanation:
Just multiply 4 by 3
Use the distributive property to remove the parentheses.
-7 ( -2w - 4y + 1 )
Answer: [tex]14w+28y-7[/tex]
Step-by-step explanation:
multiply everything by -7
Answer:
Step-by-step explanation:
14w+28y-7
what is a unit rate?
Answer:
A unit rate is like a calculator or price per unit. that you will have to divide the numerator by the denominator.
Step-by-step explanation:
Example: "A motorcycle travels 230 miles on 4 gallons of gasoline." basically you will have to find the average mileage per gallon of how much that motorcycle used.
I'm not sure if this helped. sorry
Lexi runs a race at school. She runs at a rate of 4 miles per hour for the first mile, then increases her rate to 5 miles per hour until the last mile when she runs 6 miles per hour. Which equation below represents her time, T. In hours, If she runs a total of x miles
Answer:
60T = 12x - 1
Step-by-step explanation:
In speed distance and time, time(t) is given by
time = distance(d)/speed(s)
total distance ran = x miles
case 1
d = 1 mile
speed = 4 miles per hour
as time = distance(d)/speed(s)
t = 1/4
____________________________
case 2
speed = 5 miles per hour
it is given that out of x miles for first mile and last mile her speed was 5 miles per hour
thus distance for this speed can be calculated by
subtracting first and last mile from x miles
therefore
distance = x-2 miles\
t = (x-2)/5
_____________________________________
case 3
distance = 1 mile
speed = 6 miles per hour
t = 1/6
______________________________
Total time T as required will be sum of time for the 3 case calculated above
T = 1/4 + (x-2)/5 + 1/6
T = 1/4 + (x - 2)/5 + 1/6 (taking LCM of 6,5,4 as 60 and solving)
T = (15 + 12x - 24 + 10)/60
T = (12x - 1)/60
60T = 12x - 1
Thus, equation 60T = 12x - 1 represents her time T
The pot has a diameter of 10 inches a height of 12 inches. there are 120 meatballs each meatball is 2.4 inches. the sauce takes up half the pot already. determine if the sauce overflows or not. pls help its due in an hour! ):
the answer is c
Step-by-step explanation:
Laws of Sines: Find each measurement indicated. Round your answer to the nearest tenth.
Answer:
2. 137°
3. 24.7°
Step-by-step explanation:
Using cosine law:
2. 28² = 12² + 18² - 2(12)(18)cosA
cosA = -79/108
A = 137.0107361°
3. 15² = 19² + 30² - 2(19)(30)cosC
cosC =259/285
C = 24.66381079°
The measure of the angle is:
m∠A = 66.8°
m∠C = 30°
We have,
2.
Using tan trigonometric identities.
tan A = 28/12
Simplify the fraction
tan A = 7/3
Take inverse trigonometry
A = [tex]tan^{-1}(7/3)[/tex]
A = 66.8°
3.
Using sin trigonometric identities.
sin C = 15/30
Simplify the fraction
sin C = 1/2
Take inverse trigonometry
C = [tex]sin^{-1}(1/2)[/tex]
C = [tex]sin^{-1} sin ~30[/tex]
C = 30°
Thus,
The measure of the angle is:
m∠A = 66.8°
m∠C = 30°
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The following table shows how many multiplication problems 4 students were able to solve in different amounts of time. For example, Murray solved 58 problems in 2 minutes.
Student Problems Minutes
Murray 58 2
Kris 78 3
Logan 84 3
Taylor 92 4
Which student solved problems at a rate of 28 per minute?
Answer:
logan
Step-by-step explanation:
84 divided by 3 = 28
Answer: Logan
Step-by-step explanation:
Here the given table,
Student : Murray Kris Logan Taylor
Problem : 58 78 84 92
Time(min) : 2 3 3 4
Therefore, Only Logan can solve the problem at the rate of 28 per minutes.
A store makes a $0.45 profit on every toy they sell. If they made $237.15 in profit last month, how many toys did they sell?
Answer:
527
Step-by-step explanation:
237.15/0.45 = 527
Answer:
They sold 527 toys.
Step-by-step explanation:
If they make 0.45$ profit on every toy.
Total profit of a month is $237.15.
then no of toys sold = total profit divided by individual profit
Number of toys= 237.15/0.45 =527
Food Mart and Jan’s Store sell boxes of the same type of breakfast cereal.
Each shop has a special offer.
food mart has 400 g, 20% off the normal price of £5
jans store 400 g plus 30% extra £5
Which box of cereal is the better value for money?
You must show your working
someone help pleaseee
Answer:
The box of cereal bought at Farm store is a better value for money
Step-by-step explanation:
To answer this question question, we will need to be making a comparison. The comparison i will like to make with the two offers is price per grammes ( £/g). The offer with a better price or higher price per grammes win.
Let’s proceed!
For the food mart,
we are paying 20% off £5 for 400g
let’s calculate 20% off £5
That would be 5-(20/100 * 5) = 5-1 = £4
The price per grammes here is £4/400g = £0.01/g
For Jans store ;
we have 400g plus 30% extra at £5
What we need do here is to first calculate 30% extra of 400g
Mathematically, that would be 30/100 * 400 = 120
Total grammes here is 120 + 400 = 520g
Price per grammes here would be ; £5/520g = £0.00962/g
This is lesser than what we have at Food mart as 0.01 > 0.0096
Simplify 8+7/8x−1−1/2x.
Answer:
7 + 3/8x
Step-by-step explanation:
8+7/8x−1−1/2x.
Combine like terms
8-1 + 7/8x -1/2x
7 + 7/8x -1/2x
Get a common denominator
7 + 7/8x -4/8x
7 + 3/8x
Determine which of the given numbers are zeros of the polynomial g(x)=x^4+6x^3-x^2-30x.
a.) 2, 3
b.) 0, -1
c.) 2, -1
d.) 0, 2
Answer:
d.) 0, 2
Step-by-step explanation:
I graphed the polynomial on the graph below to find the zeros of the function.
If this answer is correct, please make me Brainliest!
?????????????????????????????????????????????????????????????????????????????????????????????????????????yo pls help
Answer:
75 pieces
Step-by-step explanation:
Answer:
75
Step-by-step explanation:
You can use process of elimination, first, it's asking for pieces, not ounces, it's also must be larger than 45 since the other variable is increasing.
Subtract (3x^3+4x^2)-(2x^3+3x^2-x)
Answer:
X^3 + x^2 + x
Step-by-step explanation:
First, distribute the negative sign to the numbers in the second parentheses. Then you’ll need to combine like terms.
Someone help me here pleaseee
Answer:
38°
Step-by-step explanation:
All triangles have a sum of 180°.
180 - (25 + 117) = missing angle
180 - (142) = missing angle
38 = missing angle
The measurement of the missing angle is 38°
Answer:
The measure of the missing angle is 38°
David's car used 8 gallons of gasoline to travel 340 miles. After a mechanic worked on the car, it used 7 gallons of gasoline to travel 350 miles. If the price of gasoline was approximately $4.00 per gallon, how much less, to the nearest cent per mile, did it cost to run the car after the mechanic worked on it?
Answer:
Step-by-step explanation:
if butter the dog jumps two times and falls one time then how many times has he jumped?
Answer:1 or 3
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
A word game has 100 tiles, including 2 blank tiles and 56
consonant tiles. There are 42 tiles with a vowel on each, and 12 have an "E." If the tiles are turned face down, and Dante selects one, what is the probability he will select a tile with an "E" on it?
Select One:
A.)2/7
B.)3/14
C.)I/12
D.)3/25
Answer:
D) 3/25
Step-by-step explanation:
Total number of tiles:
100Number of tiles with "E" on it:
12Probability of selecting a tile with "E" on it:
12/100 = 3/25Answer choice: D) 3/25
Please answer.....................................
Answer:
1.25 + r = 4
1.25 - 1.25 + r = 4 - 1.25
r = 2.75
first option is the answer
Step-by-step explanation:
1. subtract 1.25 from both sides
Mr. Wilson wrote the function f(x) = 7x – 15 on the chalkboard. What is the value of this function for f(6)?
Answer:
27
Step-by-step explanation:
7(6) = 42. 42-15 is 27
The value of this function for f(6) is 27.
What is a function?A function is defined as a relation between the set of inputs having exactly one output each.
Mr. Wilson wrote the function f(x) = 7x – 15 on the chalkboard.
WE need to find the value of this function for f(6).
So, plug 6 into x
7(6)-15
42 - 15
= 27
Hence, the value of this function for f(6) is 27.
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Please help me any thing you can do just help me
Answer:if u need help go to a Psychiatric hospital
Step-by-step explanation:
Mark is 4 years older than his brother Mike. If the sum of their ages is 20 how old are they now?
x + x + 4 = 20
x + x = 16
16 / 2 = 8
Mike is 8, and Mark is 12.
Which is a reasonable first step that can be used to solve the equation 2(x + 6) = 3(x - 4) + 5?
Combine like terms, 3 and 5, on the right side of the equation.
Distribute 2 to x on the left side of the equation and 3 to x on the right of the equation.
Distribute 2 to (x + 6) and 3 to (X - 4)
Apply the subtraction property of equality to move the 6 from the left side of the equation to the right side.
Answer:
Distribute 2 to (x+6) and 3 to (x-4)
Step-by-step explanation:
The first thing you need to do when solving an equation with parenthesis is to always simplify the expression first before solving. This makes it easier to solve the equation.
need help will give brainliest and 5 stars
Answer:
(-2, -2)
Step-by-step explanation:
You have to find the lowest point of the graph. That would be 2 to the left of the origin and 2 down. Note that the scale on the graph differs for the x- and y-axis.
which of the following are true
Answer:
the 4 one maybe
Step-by-step explanation:
The length of an arc of a circle is 9.42cm. If the diameter of the circle is 10cm, find the angle subtended by the arc at the center of the circle. (Take π = 3.142)
SHOW ALL WORKING.
Answer:
1.89 radians or 108 degrees.
Step-by-step explanation:
Circumference of the circle = 10 * 3.142
= 31.42.
So 31.42 is equivalent to 2 pi radians, so:
Angle subtended at the center
= (9.42 / 31.42) * 2 pi
= (9.42 / 31.42) * 2 * 3.142
= 1.89 radians or 108 degrees..
What is the range of the following set?
27, 18, 29, 25, 23, 23, 21, 32, 20
Answer:
The range is 14.
Step-by-step explanation:
To find the range in a data set, you have to subtract the lowest number from the highest number in the set. The highest number is this set was 32. The lowest was 18. 32-18=14. Thus, the answer is 14.
Problem:
The pile of blocks above weighs 2 pounds. How many ounces do the blocks weigh?
A
32 ounces
B
16 ounces
C
1 ounce
D
64 ounces
End
Session
the answer is 32 ounces this same queston is in my notes
hope it likes you...
There are 12 people in a class they are asked wether they have a brother or sister 9 say they have a brother 7 say they have a sister 2 say they have neither
Step-by-step explanation:
Here is the work in the middle there would be 2 because the have neither brother or sister
Answer:
2
Step-by-step explanation:
which of the following is the best way of selecting a random sample
Answer:
I believe its c because a b and d are far off
Step-by-step explanation:
