Please help if your a Expert,Ace, or Genius if you are lower you can type the answer in but I might not take your answer as if it was correct.
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Guys please help me
this is a system of equation word problem
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.. w = 185 -3d . . . . . . d is the number of days, w is the weight in pounds
Evaluating this for d=7, we have
.. w = 185 -3*7 = 164
The point is represented by the ordered pair (7, 164).
The value on day 7 corresponds to the weight loss due to rejection. We might conclude the reaction to rejection was the cause of death.
Which function has a domain of all real numbers except x=π/2 ±nπ?
A. y=secx
B. y=cosx
C. y=1/sinx
D. y=cotx,
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Answer:
y=cos x
Step-by-step explanation:
A P E X
Trey wants to plant grass in his backyard. His backyard is in the shape of a rectangle. Its length is 31
feet and its width is 24
feet. Suppose each pack of seed covers 12
square feet. How many packs of seed will he need to cover the backyard?
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The first step to solve this problem is to compute for the area of the rectangular backyard. The formula in computing the area of a rectangle is:
A = LW
Substituting the given measurement to the formula:
A = 31 (24)
A = 744 square feet
The area of the backyard is 744 square feet.
Since each pack of seed covers 12 square feet, you need to divide this to the total area of the backyard.
Therefore, you need 62 (744 / 12) packs of seed to cover the backyard.
Trey will need 62 packs of seed to cover his backyard.
Explanation:To find the number of packs of seed Trey will need to cover his backyard, we need to calculate the total area of the backyard and then divide it by the area covered by each pack of seed.
The formula to find the area of a rectangle is length x width. For Trey's backyard, the length is 31 feet and the width is 24 feet, so the area is 31 x 24 = 744 square feet.
Each pack of seed covers 12 square feet, so we divide the total area of the backyard by the area covered by each pack of seed: 744 / 12 = 62 packs of seed.
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Given f(x) =10x-2x find f(7)
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10(7) -2(7)
70 - 14
56
f(7) = 56
How to find the equation of a circle
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[tex]\bf \textit{equation of a circle}\\\\ (x- h)^2+(y- k)^2= r^2 \qquad center~~(\stackrel{5}{ h},\stackrel{3}{ k})\qquad \qquad radius=\stackrel{2}{ r} \\\\\\ (x-5)^2+(y-3)^2=2^2\implies (x-5)^2+(y-3)^2=4[/tex]
Final answer:
To find the equation of a circle, use the formula (x - h)² + (y - k)² = r², where (h,k) is the center of the circle and r is its radius. You apply this knowledge to other circular calculations, such as the angular velocity or the position and velocity of a moving point on the perimeter of the circle.
Explanation:
Finding the Equation of a Circle
To find the equation of a circle, you need to know the circle's radius (r) and the coordinates of its center (h,k). The general form of the equation is (x - h)² + (y - k)² = r². The values of h and k are the x and y coordinates of the center of the circle, respectively. If you recall the formula for the circumference of a circle, which is 2πr, and the area, which is πr², you can see that these both incorporate the radius of the circle in their calculations, similar to how the radius is used in the equation of the circle. When given certain dimensions or related motion problems, you can substitute known values into the equation to solve for the unknowns.
For example, if a circle has a radius of 5 units and its center is at the point (3,4), the equation would be (x - 3)² + (y - 4)² = 25. To find equations related to circular motion, like in the scenario of a student on a merry-go-round, knowing the radius also allows for determining the angular velocity and the velocity of a shadow or any point moving in circular motion.
Help please been stuck on this for a week.
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Surface Area = (2 • π • r²) + (2 • π • r • height)
However the 2*PI*r^2 part of the formula is used to calculate the 2 "ends" of a cylinder. Since the problem states that you are NOT to count any of surface area of the "ends" then you only need the (2 • π • r • height) part of the formula.
So, r = 3 inches and height = 8 * 3 inches, the side area equals
2 * PI * r * height
2 * 3.14159 * 3 * 24 =
452.39 cubic inches which is the lateral area.
helppppppppppppppppp
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14.1 in
Explanation:
The equation relating the length of arc, radius of circle and angle is:
S = rθ
where:
S is the length of the arc
r is the radius of the circle = 6 in
θ is the angle in radians = 135 degrees = (135*π) / 180 = 0.75 π radian
Substitute with the givens in the above equation to get the length of the arc as follows:
S = rθ
S = 6 * 0.75π
S = (9/2) π which is approximately 14.1in
Hope this helps :)
Which of the following is the image of A after a rotation of -90° about the origin?
(0, -2)
(0, 2)
(-2, 0)
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Answer:
Option A. (0, -2)
Step-by-step explanation:
In the given graph coordinates of point A are (2, 0).
Now this point is rotated by -90° about the origin, that means rotation has been done clockwise by 90°.
Now after rotation this point A will lie on the negative side of the y-axis and the new coordinates become (0, -2).
Therefore, option A. (0, -2) is the correct option.
A bakery bakes 10 cakes per hour & had 3 from the day before. What equation represents this?
A.y = 10x + 3
B.y = 3x + 10
C.y = x + 13
D.y = 13x
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x represents the number of hours spent
y = 10x + 3
-----------------------------
Answer: 10x + 3
-----------------------------
The mean weight of five complete computer stations is 167.2 pounds. The weights of four of the computer stations are 158.4 pounds, 162.8 pounds, 165 pounds, and 178.2 pounds respectively. What is the fifth computer station?
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The mean weight of five complete computer stations is 167.2 pounds.
The weights of four of the computer stations are 158.4 pounds, 162.8 pounds, 165 pounds, and 178.2 pounds.
We have to determine the weight of fifth computer station.
Let the weight of fifth computer station be 'x' pounds.
Mean is calculated by sum of all the observations divided by the total number of observations.
So, [tex] \frac{158.4+162.8+165+178.2+x}{5}=167.2 [/tex]
[tex] \frac{664.4+x}{5}=167.2 [/tex]
[tex] {664.4+x}=167.2 \times 5 [/tex]
[tex] {664.4+x}=836 [/tex]
x= 171.6 pounds
The weight of fifth computer station is 171.6 pounds.
To find the weight of the fifth computer station, subtract the sum of the weights of the four given stations from the mean weight.
Explanation:The mean weight of five complete computer stations is 167.2 pounds. To find the weight of the fifth computer station, we can calculate the sum of the weights of all five stations and then subtract the sum of the weights of the four given stations. The weight of the fifth station can be found by subtracting the sum of the weights of the four given stations from the mean weight.
Sum of the weights of all five stations = 5 * 167.2 pounds
Sum of the weights of the four given stations = 158.4 pounds + 162.8 pounds + 165 pounds + 178.2 pounds
Weight of the fifth station = Sum of the weights of all five stations - Sum of the weights of the four given stations
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Which expression shows a sum of three terms? (1 point)
3x
3 + x
x^3
x + 3 + x
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The answer is x + 3 + x
Answer:
x + 3 + x
Step-by-step explanation:
3x :
This is a product of two terms, where x is any variable.
3 + x :
This is sum of two terms,where x is any variable.
x^3 :
This expresses x to the power of three. It can also be written as (x times x times x ). Thus it is the product of three terms, where x is any variable.
x + 3 + x :
This is the sum of three terms, where x is any variable.
Thus answer is x + 3 + x
Evaluate the expession. x=12, y=8, z=3 4x-yz
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x=12, y=8, z=3
4x-yz = 4(12) - (8)(3)
4x-yz = 48 - 24
4x-yz = 24
The value of the given expression is 24.
The given expression is 4x-yz.
What is an expression?An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.
Put, x=12, y=8 and z=3 in the given expression, we get
4x-yz = 4×12 - 8×3
= 48 - 24
= 24
Therefore, the value of the given expression is 24.
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Emily’s pet snake is 5 feet long. Kristen’s snake is 50 inches long. Kristen says her snake is much longer because 50 is so much bigger than 5. Is Kristen right? Why or why not?
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if f(x)=5x-1 thenF-1(x)
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Tim predicts he will get 98 points on the next exam. If Tim actually earned 62 points, what was Tim's percent error? Round your answer to the nearest tenth of a percent.
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original #= 98
new #= 62
% change= (62-98)/98 x 100
= -36/98 x 100
= -0.36734 x 100
= -36.73%
Rounded to nearest 10th of %= -36.7%
CHECK:
= 98 - (98 * 36.73%)
= 98 - (98 * 0.3673)
= 98 - 36
= 62 new #
ANSWER:
Her percent error was 36.7% (rounded to the nearest tenth of a percent). The negative indicates a decrease.
Hope this helps! :)
Answer: 58.1
Step-by-step explanation:
98 - 62 / 62 = rounds to 58.1 Thank me Later..
39 is 75% of what number
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IF 39 is 75%, divide 39 by 3.
39/3= 13
Multiply that by 4.
13*4= 52
39 is 75% of 52.
Have a nice day!
Find two numbers, if
Their sum is 3/5 and their difference is 7 1/5
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.. x + y = 0.6
.. x - y = 7.2
Add these equations to get
.. 2x = 7.8
.. x = 3.9
Then you can find y from
.. y = 0.6 -3.9 = -3.3
The two numbers are -3.3 and 3.9.
Answer:
3.9 and -3.3
Step-by-step explanation:
Which equation finds the value of x in the triangle below?
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1) cot 70=x/12
Cot 70=[opposite side]/[adyacent side]=x/12
The option 1 is correct
2) cot 70=12/x
Cot 70=[opposite side]/[adyacent side]=x/12
The option 2 is not correct
3)sec 20=x/12
Sec 20 =1/cos20
Cos 20==[opposite side]/[hypotenuse]=12/z
1/(1/cos20)-------> 1/(12/z)------> z/12
The option 3 is not correct
4) sec 20=12/x
Sec 20 =1/cos20
Cos 20==[opposite side]/[hypotenuse]=12/z
1/(1/cos20)-------> 1/(12/z)------> z/12
The option 4 is not correct
the correct value is
1) cot 70=x/12
Answer:
A: cot 70 degrees = x/12
Step-by-step explanation:
on edg... Good Luck!!!
(x+10)+(3x+2)=180
What is x
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To solve this problem, we need to simplify.
(x + 10) + (3x + 2) = 180
x + 3x + 10 + 2 = 180
We combine like terms first:
4x + 12 = 180
And isolate x.
4x = 168
Now, we divide both sides of the equation by 4 to solve for x.
x = 168 ÷ 4
x = 42
Hope this helps!
Step 1: Simplify both sides of the equation.x+10+3x+2=180(x+3x)+(10+2)=180 (Combine Like Terms)4x+12=1804x+12=180
Step 2: Subtract 12 from both sides.4x+12−12=180−124x=168
Step 3: Divide both sides by 4.4x/4=168/4
x=42
PLEASE HELP ASAP!!! WILL GIVE BRAINLIEST!!!
Two florist purchased flower bouquets and vases at the same store. The first florist bought 2 flower bouquets and 2 vases for a total of $12.50. The second florist bought 8 flower bouquets and 2 vases for a total of $29.00.
Let b represent the cost of one flower bouquet and v represent the cost of one vase. Write AND SOLVE a system of equations to find the price of each type of arrangement. SHOW ALL WORK!
THANKS FOR ALL YOUR HELP
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8f + 2v = $29.00
-2f. - 2v = -12.50
8f + 2v = 29.00
6f = $16.50
f= $2.75 each flower bouquet
2(2.75) + 2v = 12.50
5.50 + 2v = 12.50
2v = $7.00
v = $3.50 each vase
Complete the synthetic division problem below. What is the quotient in polynomial form?
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We bring down the first number inside the box, 2, unchanged.
_______
-1| 2 7 5
_______
2
Now we multiply that 2 by the number outside, -1:
_______
-1| 2 7 5
-2
2
Now we add the two numbers in the middle column:
________
-1| 2 7 5
-2
2 5
Multiply the 5 we brought down by the -1:
________
-1| 2 7 5
-2 -5
2 5
Add the numbers in the last column:
________
-1| 2 7 5
-2 -5
2 5 0
The 3 numbers under the box represent the coefficients of x² and x, as well as the constant. When we finish, we no longer have an x², but start at the next level down, which would be x. 2 would be the coefficient of x and 5 would be the constant, with 0 remainder.
what’s the inverse of y=4x^2-2
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x = 4y^2 - 2
(x + 2) = 4y^2
(x + 2)/4 = y^2
+/- sqrt(x + 2)/2 = y
The graph of these two is below.
The original is in red
The inverse is in blue and green
Lines AB and CD are parallel. If the measure of W equals 129°, what is the measure of X?
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n quadrilateral LMNO, LO ∥ MN. What additional information would be sufficient, along with the given, to conclude that LMNO is a parallelogram? Check all that apply. ML ∥ NO ML ⊥ LO LO ≅ MN ML ≅ LO MN ⊥ NO
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Answer: The correct options are
(A) ML ∥ NO,
(C) LO ≅ MN.
Step-by-step explanation: Given that in quadrilateral LMNO, LO ∥ MN.
We are to select the correct additional information that would be sufficient along with the given information to conclude that LMNO is a parallelogram.
PARALLELOGRAM: A parallelogram is a quadrilateral if ine of the following conditions are satisfied:
(i) Two pairs of opposite sides parallel
or
(ii) one pair of opposite sides parallel and congruent.
The given condition is
LO ∥ MN.
So, the other additional sufficient condition will be
either the other pair of opposite sides parallel, i.e., ML ∥ NO,
or
the same pair of parallel sides are congruent, i.e, LO ≅ MN.
Thus, the correct statements are ML ∥ NO and LO ≅ MN.
Option (A) and (C) are correct.
Answer:
a and c
Step-by-step explanation:
A high school student working part-time as a pizza delivery man had a gross income of 6324 last year. If his federal tax rate was 10% and his state tax rate was 4.2% what was the amount withheld from his pay last year in fenderal tax, state tax, and FICA combined
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Answer:
$1381.79 withheld from his pay last year.
Step-by-step explanation:
A student working as a pizza delivery man and earned = $6324.00
first we calculate all the taxes at the given tax rates
Federal Tax Rate = 10% of 6324.00
= 0.10 × 6324 = $632.40
State Tax Rate = 4.2% of 6324.00
= 0.042 × 6324 = $265.608
FICA is comprised of taxes for social security and medicare. For social security tax rate is 6.2% and for medicare tax rate is 1.45% which add up to 7.65%.
FICA combined Tax Rate = 7.65% of 6324.00
= 0.0765 × 6324 = $483.786
Now we add all the taxes to get what amount withheld from his pay
= 632.40 + 265.608 + 483.786 = $1381.79
$1381.79 withheld from his pay last year.
Identify the GCF of 10x4y3 − 5x3y2 + 20x2y.
10x2y
10x3y
5x2
5x2y
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The strategy for expressions with variables is still to factor out the greatest term.
For [tex]10x^4y^3-5x^3y^2+20x^2y[/tex], we look for the largest factor in each term.
For [tex]10x^4y^3[/tex], the largest factors are [tex]x^4[/tex] and [tex]y^3[/tex]. We'll come back to the coefficients in a minute.
For [tex]-5x^3y^2[/tex], the largest factors are [tex]x^3[/tex] and [tex]y^2[/tex]. Now, looking back to the previous term and also considering the coefficients, the largest factor of the two is [tex]5x^3y^2[/tex]. You could rewrite the first term as [tex](5x^3y^2)(2xy)[/tex] and the second term as [tex]-1(5x^3y^2)[/tex].
Now, we consider the last term, [tex]20x^2y[/tex]. The largest factor common to the two other terms is [tex]5x^2y[/tex].
And that's our final answer for the GCF (answer D).
The GCF of the given expression is:
[tex]5x^2y[/tex]
Step-by-step explanation:The GCF ( greatest common factor ) is the greatest divisor which divides all the terms completely.
Here we have the expression as:
[tex]10x^4y^3-5x^3y^2+20x^2y[/tex]
Here we see that the factors of the first term are:
[tex]10x^4y^3=2\times 5\times x\times x\times x\times x\times y\times y\times y[/tex]
The factor of the second term is:
[tex]-5x^3y^2=-1\times 5\times x\times x\times x\times y\times y[/tex]
and the factor of the third term is:
[tex]20x^2y=2\times 2\times 5\times x\times x\times y[/tex]
i.e. the factor which is common to all the three terms are:
[tex]5\times x\times x\times y=5x^2y[/tex]
Hence, the GCF is: [tex]5x^2y[/tex]
helpppppppppppppppppppp
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For the function:
y = exp (x) -4
We see that for x = 0 we have:
y = exp (0) -4
y = 1-4
y = -3
Which is consistent with the graph.
Answer:
y = exp (x) -4
option 4
PLEASE HELP PLEASE HURRY!!!!!!!!!
BRAINLIEST AVAILABLE
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The second one is is also exponential and the rule is 32 times .25^x and the last one is is linear and the rule is 5x+-4
1]
y = 14 * (7/2)^x This is never going to linear.
2]
y = 32/(4)^x This also is not linear.
3]
y = 5x - 4 This one is linear
If you have a graphing calculator, you might think about graphing these three. The questions are a bit of by guess and by golly. You just have to keep on trying things until you get it. Look at 0 as an x value first.
There are 18 animals and 40 legs in all so lets see how many cows could be born. 4,8,16,12,24,28,32,36,40. so there could be 9 cows and now lets see on chickens 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40. so the could be 20 chickens so if u think. i think the ancewer is 30 chickens and 10 cowws thx!!!!
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Given information
--------------------------------------
Total animals = 18
Total legs = 40
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Assumed all are chickens
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Total legs = 18 x 2 = 36
--------------------------------------
Calculate extra legs
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40 - 36 = 4
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Difference in legs between the cow and chicken
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4 - 2 = 2
--------------------------------------
Find the number of cows
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4 ÷ 2 = 2
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Find the number of chickens
--------------------------------------
18 - 2 = 16
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Answer: 16 chickens and 2 cows
--------------------------------------
PLEASE HELP ME ON THIS QUESTION AND DON'T FORGET TO EXPLAIN!!!
Please show ur work and correct answer will get brainliest
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f(x) [3rd one down] added to the middle g(x) should give you h(x)
f(x)_down 3 + g(x)_middle_g(X)_second column = -2x + 3 + 7x - 9 Now collect the like terms.
f(x) + g(x) = 5x - 6 which is h(x).
These guys sure believe in reading problems.