Answer:C
Step-by-step explanation:
Multiply 259 by .2 then subtract that number (51.8) from 259
Answer:
c
Step-by-step explanation:
you will divide 259.00 by 20%
Lydia is buying cupcake ls for he brother birthday party. She brought 36 cupcakes total.Of the cupcakes she bought,5/6 of them were vanilla cupcakes, which cost $1.50. The rest of the cupcakes were chocolate, which cost $2.25 each. What was the total Lydia spent on cupcakes
Answer:
58.50
Step-by-step explanation:
First find out how many were vanilla and chocolate
vanilla: 5/6 * 36 = 30
Chocolate = total - vanilla = 36-30 =6
Cost for vanilla = 1.50*30 =45
Cost for chocolate 2.25*6 =13.5
Add the cost together
45+13.50
58.50
What is the standard form of (x+5)(x+5)
Answer:
x² + 10x + 25
Step-by-step explanation:
Given
(x + 5)(x + 5)
Each term in the second factor is multiplied by each term in the first factor, that is
x(x + 5) + 5(x + 5) ← distribute both parenthesis
= x² + 5x + 5x + 25 ← collect like terms
= x² + 10x + 25 ← in standard form
Lliana rotated trapezoid WXYZ 180 about the origin
Answer: it’s A
Step-by-step explanation:
I took the edge test
Select the statement that describes this expression: 1/2 x (734 − 246).
Answer:
The value of given expression is 244.
Step-by-step explanation:
The given expression is [tex]\dfrac{1}{2}\times (734 - 246)[/tex].
We need to simply the above expression.
First of all, we will subtract 246 from 734. By doing so, we get 488.
Now, we can divide 488 by 2.
As a result we get 244.
So, the value of given expression is 244.
The required statement is "[tex]\dfrac{1}{2}[/tex] the difference between 734 and 246".
Important information:
The given expression is [tex]\dfrac{1}{2}\times (734-246)[/tex].Phrase for Expression:(734-246) is the difference between 734 and 246.
[tex]\dfrac{1}{2}\times (734-246)[/tex] is [tex]\dfrac{1}{2}[/tex] the difference between 734 and 246.
Therefore, the required statement is "[tex]\dfrac{1}{2}[/tex] the difference between 734 and 246".
Find out more about 'Phrase for Expression' here:
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Write the equation for a parabola with a focus at (2, 2) and a directrix at x = 8.
Answer:
x = -1/12(y -2)² +5
Step-by-step explanation:
You want the equation of the parabola with focus (2, 2) and directrix x = 8.
VertexThe directrix is a vertical line to the right of the focus. This means the parabola opens to the left. The vertex is halfway between the focus and the directrix, so its coordinates are ...
vertex = ((2 +8)/2, 2) = (5, 2)
Leading coefficientThe leading coefficient will be negative for a parabola that opens to the left. Its magnitude is 1/(4p), where p is the distance from the focus to the vertex. Here, that distance is 5 -2 = 3, so the leading coefficient is ...
-1/(4p) = -1/(4·3) = -1/12
EquationIn vertex form, the equation of the parabola is ...
x = a(y -k)² +h . . . . . . . . . . . vertex (h, k); leading coefficient 'a'
x = -1/12(y -2)² +5
The equation of the parabola is [tex]\( (x-5)^2 = 12y \), with focus (2, 2) and directrix \(x = 8\).[/tex]
The standard equation for a parabola with a vertical axis of symmetry is:
[tex]\[ (x-h)^2 = 4p(y-k) \][/tex]
where (h, k) is the vertex of the parabola and p is the distance between the vertex and the focus (or the vertex and the directrix).
Given that the focus is at (2, 2) and the directrix is at x = 8, we can find the distance between the focus and the vertex, which is p. Since the directrix is a vertical line, the vertex's x-coordinate is the midpoint between the x-coordinate of the focus and the x-coordinate of the directrix:
[tex]\[ h = \frac{{x_f + x_d}}{2} = \frac{{2 + 8}}{2} = 5 \][/tex]
So, the vertex is at (5, k). Since the focus is above the vertex, k > 2.
Now, we find the distance between the focus and the vertex, which is equal to p. The distance formula is:
[tex]\[ p = \sqrt{(x_f - h)^2 + (y_f - k)^2} \]\[ p = \sqrt{(2 - 5)^2 + (2 - k)^2} \]\[ p = \sqrt{9 + (2 - k)^2} \][/tex]
Given that p is the distance from the focus to the vertex, we know that [tex]\(p = 3\).[/tex]
So, the equation of the parabola is:
[tex]\[ (x-5)^2 = 12(y-k) \][/tex]
Now, we need to find the value of k. Since the vertex lies on the parabola, we can substitute the coordinates of the vertex into the equation:
[tex]\[ (5-5)^2 = 12(0-k) \]\[ 0 = -12k \]\[ k = 0 \][/tex]
So, the equation of the parabola is:
[tex]\[ (x-5)^2 = 12y \][/tex]
Which set of measurements could be the side lengths of a right triangle?
A: 10cm, 12cm, 16cm.
B: 20cm, 21cm, 29cm.
C: 30cm, 32cm, 42cm.
D: 40cm, 42cm, 56cm.
I need help and NOW
Answer:
a
Step-by-step explanation:
A diver descends 2 feet per minute. How deep below sea level is it after 40 minutes? (shows the process).
Answer:
80 feet below sea level
Step-by-step explanation:
We know that the rate of the diver is 2 ft / min. The time we are given is 40 minutes, so to find out how many feet the diver has descended, we multiply the rate by the time:
(2 ft / min) * (40 min) = 80 ft
Thus, the diver is 80 feet below sea level after 40 minutes.
Hope this helps!
round 39.473 to the nearest tenth.
I need help fast please
Answer:
39.5
Step-by-step explanation:
If the number to the right of the number your rounding to is equal to or greater than 5 round up
Answer:
39.5
Step-by-step explanation:
Step 1: Round to the nearest tenth
39.473
Since the hundredths place is greater or equal to 5, we round up the tenth's place.
39.473
39.5
Answer: 39.5
The difference between a number squared and 14 is 50. Can you just write out as equation pls
Answer:
x^(2)-14=50
Step-by-step explanation:
The word problem 'The difference between a number squared and 14 is 50' translates to the quadratic equation x^2 - 14 = 50 in mathematical terms.
Explanation:To form an equation, let's denote the unknown number as x. The phrase 'a number squared' can be written as x2, and 'the difference between a number squared and 14' translates to x2 - 14. According to the problem, this difference equals 50. Therefore, the equation representing this situation is:
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Morgan rewrote the expression 90 + (10 + 4.8) as (90 + 10) + 4.8. How will this change the work that is needed to evaluate the expression?
4.8 is now multiplied by 90 and 10.
4.8 is now added to 10 before adding 90.
4.8 is now added after finding the sum of 90 and 10.
4.8 is now added to both 90 and 10.
Answer:
Answer is c
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
just did it
. You and a friend have dinner at a restaurant . Your meal costs $15.85 and you leave an 18% tip and your friend's meal cost $14.30 and he leaves a 20% tip. What is the difference in their total bills?
Answer:
$1.54
Step-by-step explanation:
18% of $15.85 is 2.853, so your total is $18.703
20% of $14.30 is 2.86, so their total is $17.16
So the difference is $1.543, rounded (since your dealing with money) would be $1.54
A water tank composed of a cylinder and 2 half spheres is shown below.
3ft high and 4ft long
The tank is being filled with drinking water by using a bucket that can hold 0.34 cubic feet of water. Emma is able to pour 5 full buckets into the tank every 3 minutes. How long will it take to fill the water tank completely at this constant rate? Use 3.14 for pi and round to the nearest whole minute.
The volume of the tank is __ cubic feet and it will be completely filled with water at the end of __ minutes.
Answer:
Hey i like your profile pic
Step-by-step explanation:
Jackson purchases a new car for $48,000. The car's value can be modeled by the
following exponential function: y = 48000(0.76)^t where y represents the car's
value and t represents time in years. What is the decay rate expressed as a
percentage? *
We have been given that Jackson purchases a new car for $48,000. The car's value can be modeled by the following exponential function: [tex]y = 48000(0.76)^t[/tex] where y represents the car's value and t represents time in years. We are asked to find the decay rate as a percentage.
We know that an exponential decay function is in form [tex]y=a\cdot (1-r)^x[/tex], where,
y = Final value,
a = Initial value,
r = Decay rate in decimal form,
x = time.
Upon comparing our given function [tex]y = 48000(0.76)^t[/tex] with standard decay function [tex]y=a\cdot (1-r)^x[/tex], we can see that [tex]1-r=0.76[/tex].
Let us solve for r.
[tex]1-1-r=0.76-1[/tex]
[tex]-r=-0.24[/tex]
[tex]r=0.24[/tex]
Let us convert 0.24 into percentage.
[tex]0.24\times 100\%=24\%[/tex]
Therefore, the decay rate is 24%.
PLZ HELP ME HAS SOON HAS POSSIBLE?????
Answer:
- 7/2
Step-by-step explanation:
- sqrt(49/4)
We know that sqrt(a/b) = sqrt(a)/ sqrt(b)
- sqrt(49)/sqrt(4)
- 7/2
Annita is sewing a lace edge around a rectangular quilt She will need 144 inches of lace to do the entire quilt if the quilt is 37
inches wide, how long is the quilt?
OA. 70 inches
OB. 35 inches
c. 33 inches
OD. 72 inches
Answer:
B
Step-by-step explanation:
So if she sews along the edge, that means 144 is the perimeter,
The shape is a rectangle, therefore 2 of the sides are 37,
You should add 37 to 37 and that will give you 74
Subtract 74 from 144 to get 70
but we're not done!
The question asked for the length of the quilt, but we only subtracted the length from the total perimeter!
Now you must divide by 2 and you should get 35 inches
Thank me later :)
Two cars are 400 miles apart when they start moving towards each other. The speed of the first car is 30 mph. The the second car moves 20 mph faster than the first car. After how many hours will the cars meet?
Answer:
The number of hours it will take before both cars meet is 5 hours
Step-by-step explanation:
Here we have, speed of first car, A = 30 mph
Speed of second car, B = (30 + 20) mph = 50 mph
Therefore, we have
Let the point where both cars meet be X and the time before they meet be Y
Then for car A, 30 × Y = X....................(1)
For car B, 50 × Y = 400 - X..................(2)
From plugging the value of X from equation (1) into equation (2) we have;
50·Y = 400 - 30·Y
80·Y = 400
Y = 5 hours
Therefore the number of hours it will take before both cars meet = 5 hours.
Answer
t = 5 hrs
Step-by-step explanation:
let
speed of the first car = 30 mph
speed of the second car = 20 mph + 30 mph = 50 mph
When the cars meet we know both cars will have traveled a total distance of 400 miles.
Therefore,
let's make a distance equation
speed = distance/time
distance = speed × time
first car + second car = 400 miles
30t + 50t = 400
80t = 400
divide both sides b 80
t = 400/80
t = 5 hrs
the difference between Hawaii (12 degree) and south Dakota (-58 degree)
Answer:
Hawaii is 80 degrees warmer than Dakota.
Step-by-step explanation:
first you have to make the negative a positive by adding 58 degrees to it making it zero then you add the 12 degrees in Hawaii getting 80 degrees.
Solve for x if cos(2x+60)=-1
Answer:
x = 60°
Step-by-step explanation:
[tex] \cos \: (2x + 60) = - 1 \\ \cos \: (2x + 60) = \cos \: 180 \degree \\ 2x + 60 = 180 \degree \\ 2x = 180 \degree - 60 \degree \\ 2x = 120 \\ x = \frac{120}{2} \\ \huge \red{ \boxed{ x = 60 \degree}}[/tex]
Find the 88th term of the arithmetic sequence 26, 28, 30,...
Answer:
200
Step-by-step explanation:
Given Arithmetic sequence is: 26, 28, 30,...
First term a = 26
Common Difference d = 2
n = 88
[tex] \because t_n=a +(n-1) d \\ \therefore \: t_{88}=26 +(88-1) \times 2 \\ \therefore \: t_{88}=26 +87 \times 2 \\ \therefore \: t_{88}=26 +174 \\ \huge \red{ \boxed{ \therefore \: t_{88}=200}} \\ [/tex]
The 88th term of the arithmetic sequence 26, 28, 30,... is 200.
Explanation:The given sequence is an arithmetic sequence, where each term is obtained by adding 2 to the previous term. The first term of the sequence is 26, and the common difference is 2.
To find the 88th term of the sequence, we can use the formula for the nth term of an arithmetic sequence: an = a1 + (n - 1)d, where an is the nth term, a1 is the first term, n is the term number, and d is the common difference.
Plugging in the given values: an = 26 + (88 - 1)2 = 26 + 87*2 = 26 + 174 = 200.
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James is a welder who earns $18 per hour. He works 8 hours per day, Monday through Friday. How much does James earn in one week?
Answer:
720 Dollars a Week
Step-by-step explanation:
18x8x5
since he makes 18 dollars an hour you multi that by 8 because 8 hours
then you have to multiply that by 5 because he works 5 days a week mon-fri
What is the image of the point (5, -3) after a reflection over the line y = x?
O (3,-5)
O (-5, 3)
O (-3,5)
o (5, 3)
Answer:
(-3,5)
Step-by-step explanation:
If the slope of y=x is 1, then you have to reflect over that line with a negative slope. It should reflect over to be (-3,5).
Answer:C
Step-by-step explanation:have a nice day!
Rayna found the curve of best fit for a set of data that represents an exponential relationship. The correlation coefficient for her curve of best fit is r= 0.274
The first is growth or decay. The second is is or is not. Which one is correct?
Answer:
The data set shows exponential GROWTH
raynas curve IS NOT a good fit for the data set
Step-by-step explanation:
Believe
Final answer:
With a correlation coefficient of r = 0.274, Rayna's exponential model is not a strong fit, and without the sign of the rate parameter, we cannot determine whether it represents growth or decay.
Explanation:
When Rayna found the curve of best fit for a set of data representing an exponential relationship with a correlation coefficient of r = 0.274, two aspects can be deduced. First, whether the relationship reflects growth or decay, and second whether the model fits well or not. The value of r indicates the strength and direction of the linear relationship between two variables.
In the context of exponential relationships, if the parameter representing the rate of change (often denoted by 'b') is positive, it indicates exponential growth; if the parameter is negative, it signifies exponential decay. Since we do not have the explicit sign of the parameter, we cannot directly conclude whether Rayna's data is demonstrating growth or decay.
The value of the correlation coefficient r = 0.274 is relatively low and thus, Rayna's exponential model is not a strong fit for the data. This is because the value of r is far from 1, and a higher correlation coefficient would suggest a stronger linear relationship between variables.
point
(Circles) What is the circumference of this circle, rounded to the nearest
tenth? Use 3.14 for T.
The radius of the cirde is 6 inches
6
in.
0
15.4 inches
18.8 inches
O
37.7 inches
O
113.0 inches
Answer:
37.68 or 37.7
Step-by-step explanation:
Circumference of a circle: 2πr
2 x 3.14 = 6.28
6.28 x 6 = 37.68 or 3.7
Hey i need help um pls ill give the crown
um im bad at math so
Rob says that this graph shows a proportional relationship. Is he correct? Explain.
Answer:
no, both lines increase at different angles
Answer:
No
Step-by-step explanation:
Because both of these functions have a constant, different growth, as one grows the other will grow at a slightly different rate, which will constantly change the ratio between their values. Since a proportional growth is one where the ratio between the values stays constant and this is not the case here, this is not a proportional relationship. Hope this helps!
If x2 + nx + 18 = (x + 9)(x + 2), what is the value of n?
Find the volume of the prism.
Answer:
168 units^3
Step-by-step explanation:
The volume of triangular prism is calculated like this : 1/2 × b×h×l (b: base, h: height, l: length)
1/2 × 7 × 6 × 8 = 168 units^3
A translation is shown on the grid below. On a coordinate plane, triangle A B C has points (negative 4, 2), (negative 4, negative 2), (negative 1, negative 2). Triangle A prime B prime C prime has points (1, 5), (1, 1), (4, 1). Which are true statements about the translation? The sides of the image and pre-image are congruent. The image is turned 90°. The angles in the image are different from the angles in the pre-image. The image is a slide of the pre-image. The image has a different shape than the pre-image. Each point has moved in a different direction. Each point has moved the same number of units.
Answer:
a, d, g
Step-by-step explanation:
Translation is one of the "rigid motions," along with reflection and rotation. Figures subject to rigid motions are congruent. No angles or segment lengths are changed. Translation is accomplished by adding the same vertical and horizontal offsets to every point of the original figure, effectively sliding the figure to a new location. Every image line segment is parallel to its corresponding pre-image line segment.
__
The statements shown in bold are true of any translation.
The sides of the image and pre-image are congruent. The image is turned 90°. The angles in the image are different from the angles in the pre-image. The image is a slide of the pre-image. The image has a different shape than the pre-image. Each point has moved in a different direction. Each point has moved the same number of units.Answer:
1,4,7
Step-by-step explanation:
1.) The sides of the image and pre-image are congruent.
4.) The image is a slide of the pre-image.
7.) Each point has moved the same number of units.
got 100
I’ll make sure to give you a brainliest
Answer:
Remove D
Step-by-step explanation:
The sum of the values would go from 0 to 3. Because there are 3 values when you remove one, the avg. of that would be 3/3 = +1
If r is an integer greater than 1, what is the value of (−1)r +1 if:
a) r is an odd integer
b) r is an even integer
I NEED THE ANSWER IN 30 MINS FOR SCHOOL! HELP!!!!!!!!!!!!!!!!!!!!!
Thanks in advance
Answer:
a is 0, b is 2
Step-by-step explanation:
Ik its late, but it was pretty ez. Just plug in dem numbers.
a. In the case when r is an odd integer so it should be zero.
b. In the case when r is an even integer so it should be two.
Calculation of the value:a.. In the case when r is an odd integer
So,
[tex]= (-1)^r + 1[/tex]
= -1 + 1
= 0
b. In the case when r is an even integer
So,
= 1 + 1
= 2
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A certain television is advertised as a 10-inch TV (the diagonal length). If the width of the TV is 6 inches, how many inches tall is the TV?
Answer:
8 inches
Step-by-step explanation:
Using Pythagorean theorem you know a^2+b^2=c^2
a^2+b^2=c^2 =
6^2+b^2=10^2=
36+b^2=100
100-36=b^2
64=b^2
64=8^2
The Tv is 8 inches tall