Answer:
What's the question?
Step-by-step explanation:
You haven't shown me a question.
Answer:
The answer is A.[tex]98\beta \pi[/tex]
Step-by-step explanation:
Take the transactions of the polynomials and apply the quadratic formula.
The diagram shows a straight line ABCD.
A is the point (−260,480) D is the point (620,−180)
The line cuts the y-axis at B and the x-axis at C.
Answer:
B (0, 285 ) , C (380, 0 )
Step-by-step explanation:
the first step is to obtain the equation of the line in slope- intercept form
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = A(- 260, 480 ) and (x₂, y₂ ) = D (620, - 180 )
m = [tex]\frac{-180-480}{620-(-260)}[/tex] = [tex]\frac{-660}{620+260}[/tex] = [tex]\frac{-660}{880}[/tex] = - [tex]\frac{66}{88}[/tex] = - 0.75 , then
y = - 0.75x + c ← is the partial equation
to find c substitute either of the 2 points into the partial equatio
using (620, - 180 ) , then
- 180 = - 465 + c ⇒ c = - 180 + 465 = 285
So y- intercept is B (0, 285 )
y = - 0.75x + 285 ← equation of line
to find the x- intercept , let y = 0 in the equation and solve for x
0 = - 0.75 + 285 ( subtract 285 from both sides )
- 285 = - 0.75x ( divide both sides by - 0.75 )
380 = x
x- intercept is C (380, 0 )
Difference:
x values
260 + 620 = 880
y values
480 + 180 = 660
Gradient = change in y/ change in x
Or
gradient = rise/run
= 660/880
= 3/4
= 0.75
We've got a negative slope - gradient must be negative
y = mx + c
y = - 0.75x + c
To find the y-intercept (c), which on the diagram is point B - you substitute one of the coordinates into the equation y = - 0.75x + c.
You use - point A or D - it don't matter which
I'll pick D - (620,−180)
y= -0.75x + c
-180 = - 0.75 x 620 + c
-180 = - 465 + c
+465
285= c
Thus, the equation is:
y = - 0.75x + 285
or
y = - 3/4x + 285
Where point B is (0,285) and C is (380,0)
To find:
B substitute x = 0 into the equation
(y= - 3/4 x 0 + 285)
C substitute y = 0 in the equation
0 = - 3/4x + 285
-285
- 285 = - 0.75x
÷ - 0.75
380 = x
( I converted 3/4 to 0.75 to make things clearer)
Hope this helps!
Groceries R Us is selling 8 apples for $2.80.
Food Galore is selling 6 apples for $2.16.
Shop Here is selling 4 apples for $1.42.
Find their unit rates. Which store has the best deal?
Answer:
Groceries R Us
Step-by-step explanation:
i dont know how to explain lol
The distance between points A(1, -4) and B(x, -2) is [tex]\sqrt{5\beta }[/tex] units. Find x.
Answer:
5\beta ???
Step-by-step explanation:
please recheck the question ..
Darlene picked 7 apples. Juan picked 4 times as many as Darlene. How many apples did Juan pick?
What equation represents this situation?
Group of answer choices
7*4=a
7-4=a
a-7=4
a*4=7
Good luck
Answer:
ok, i think this would be.....a.
Step-by-step explanation: so i know 7x4=28 so 7*4=a makes sense cause a = 28
have a nice day
the equation of a line is shown
6x-3y=5
a dilation c entered at the origin with a scale factor of 6 is applied to this line
A: what is the slope of the line after dilation
B: what is the value of the y-intercept of the line after the dilation
Answer: See below
Step-by-step explanation:
Let us write the equation of the given line in standard form:
[tex]6 x-3 y=5 \quad \Rightarrow \quad y=2 x-\frac{5}{3}[/tex]
A. The line moves away from the origin by a scale factor of 6, but its inclination still remains the same. Therefore, after any dilation, the slope of that line never changes.
Thus, the slope of the given line after dilation will be the same as the original slope, which is m = 2.
B. The x-intercept of the line before dilation will be given by substituting x = 0 in the given equation as shown below:
[tex]y=2(0)-\frac{5}{3}=-\frac{5}{3}[/tex]
Now, the y-intercept of the line after the dilation will be given by:
[tex]6\left(-\frac{5}{3}\right)=-10[/tex]
what is the expression to (4×+3)+(-2×+4)
Answer:
4x(3-2)
Step-by-step explanation:
since in 2 groups, there are number 4 in common
Apply Distributive Law to achieve this.
Circle A has center of (2,3) and a radius of five, and circle B has a center of (1,4) and a radius of 10.
What steps will help show that Circle A is similar to Circle B?
A.) Dilate circle A by a scale factor of 2
B.) Translate circle A using the rule. (x + 1, y - 1).
C.) Rotate circie A 180° about the center.
D.) Reflect circle A over the y-axis.
Answer:
A) Dilate circle A by a scale factor of 2Step-by-step explanation:
For two triangles to be similar, they need to have the same radius.
Circle A has a radius of 5, and Circle B has a radius of 10.So, to make them similar, we can simply :
dilate circle A by a scale factor of 2This would give Circle A and B the same radius, and they will be similar.
Owen is going on a multi-day hike up a large mountain. He wants to know what clothes he should bring for the higher elevation as he hikes. What clothes should Owen bring?
Answer:
Owen should wear thick, layered clothing thats will keep him warm
Example:Jackets,sweaters,heavy socks, gloves, benies, Balaclavas...ect
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Heavier Clothes, Since, The higher elevation will have cooler tem
y=7x+5, y=2x+5
Solving systems
Answer:
x = 0, y = 5
Step-by-step explanation:
y = 7x + 5
=> x = (y-5) / 7
y = 2x + 5 = 2 *(y-5) /7 + 5
=> (y - 5) / 2 = ( y - 5) / 7
=> y =5 since only 0 / 2 = 0 / 7
=> x = (y -5) / 7 = 0 / 7 = 0
Please help!! Will mark brainlyest.
Answer:
C
Step-by-step explanation:
It cannot be D and A and B are the same
Answer:
90 degrees around the origin
Step-by-step explanation:
When you rotate the first time it is 90 degrees
When you rotate two times it is 180 degrees
When you rotate three times it is 270 degrees
Hope it helps:)
A rancher wants to fence in an area of 1000000 square feet in a rectangular field and then divide it in half with a fence down the middle, parallel to one side. What is the shortest length of fence that the rancher can use
The shortest length of the fence used by the rancher in a rectangular field of 1000000 square feet is 4899 ft.
What is the area of a rectangle?The area of a rectangle is a region enclosed in four corners where two opposite sides are equal. The area of the rectangle is mathematically expressed as:
Area of a rectangle = length(x) × breath(y)
1000000 sq.ft = (x) × (y) ---- (1)
However, to determine the fencing, we have:
Length of fencing = 2x + 2y
since the rectangle has four sides and opposite sides are equalSuppose we use the x-direction to estimate the region where the fencing is located, we have:
Length of fencing = 2x + 2y + x
Length of fencing = 3x + 2y ---- (2)
From equation (1), make (y) the subject of the formula and replace the value of y with equation (2)
The Length of fencing is:
[tex]\mathbf{L = 3x - 2( \dfrac{1000000}{x})}[/tex]
[tex]\mathbf{\dfrac{dL}{dx} = 3 - \dfrac{2000000}{x^2} = 0}[/tex]
[tex]\mathbf{ x^2= \dfrac{2000000}{3} }[/tex]
[tex]\mathbf{ x= \dfrac{1000\sqrt{2}}{\sqrt{3}} }[/tex]
[tex]\mathbf{x = \dfrac{1000 \sqrt{6}}{3}}[/tex]
Now, if we replace the value with equation (1), then y will be:
[tex]\mathbf{y = \dfrac{1000000}{\dfrac{1000 \sqrt{6}}{3}} }\\ \\ \\ \\ \mathbf{y = \dfrac{3000 }{\sqrt{6}}}[/tex]
[tex]\mathbf{x =500\sqrt{6}}[/tex]
Now, the shortest length of the fencing can be computed by using the equation (2):
L = 3x + 2y
[tex]\mathbf{L = 3( \dfrac{1000 \sqrt{6}}{3}) + 2(500 \sqrt{6})}[/tex]
[tex]\mathbf{L =1000 \sqrt{6} + 1000 \sqrt{6}}[/tex]
[tex]\mathbf{L =2000 \sqrt{6} }[/tex]
[tex]\mathbf{L \simeq 4899 \ ft}[/tex]
Learn more about the area of a rectangle here:
https://brainly.com/question/25292087
helpppppppppppppppppppllssssssssssssssssss
Kavya is surveying how seventh-grade students get to school. In her first-
period class, 10 out of 32 students ride the bus to school. There are 160
students in seventh grade. Based on her survey, how many seventh-grade
students can she predict ride the bus to school?
• A. 40
B. 138
• C. 50
• D. 512
Please help I’ll give brainlist to the first person to answer and the answer is correct please help!! Fast hurry!!!
There are 50 seventh-grade students who can she predict riding the bus to school.
What is the unitary method?The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.
The unitary method is a method by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit. It is a method that we use for most of the calculations in math.
We are given that first-period class, 10 out of 32 students ride the bus to school. There are 160 students in seventh grade.
Therefore, we have;
160/32=5
10 x 5 =50
Thus, the answer is 50
Learn more about the unitary method, please visit the link given below;
https://brainly.com/question/23423168
#SPJ2
This question is from one of my practice questions, since im studying. Can someone help me with this?
The equation of a line is y = -4x + 10
What is the y-intercept of the line
Answer:
10
Step-by-step explanation:
the formula y = mx +c
the y is obviously, y.
m, also means the gradient has a value of -4
c is the y-intercept, so the value of c is 10.
The 8th term of a linear sequence is 18 and the 12th term is 26. Find the first term, the common difference and the 20th term
Answer:
see explanation
Step-by-step explanation:
the sequence is linear, that is arithmetic with nth term
[tex]a_{n}[/tex] = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
given a₈ = 18 and a₁₂ = 26 , then
a₁ + 7d = 18 → (1)
a₁ + 11d = 26 → (2)
subtract (1) from (2) term by term to eliminate a₁
4d = 8 ( divide both sides by 4 )
d = 2
substitute d = 2 into (1) and solve for a₁
a₁ + 7(2) = 18
a₁ + 14 = 18 ( subtract 14 from both sides )
a₁ = 4
then
a₂₀ = 4 + (19 × 2) = 4 + 38 = 42
Please help!! Will mark brainlyest.
Answer:
Answer:
47
Step-by-step explanation:
a)
a^2 + b^2 = c^2
33^2+33^2=c^2
2178=c^2
c=(nearest is 47)
b)
If you cut the square in half diagonally, it forms two right triangles with angle measures 90-45-45. You can use sin (opposite over hypotenuse) to find the length of the hypotenuse. sin (45) would be 33/(hypotenuse length). From a trig chart, you can find that sin (45) is 1/sqrt(2), meaning that 33/x = 1/sqrt(2). This means that x=33sqrt(2), which is around 47.
Step-by-step explanation:
Model trains fascinate everyone—both children and adults.
Agree
Disagree
Explain why you voted the way you did.
A school has 24 teachers and
600 students
a. Write the ratio of teachers to students. Simplify it to its lowest terms.
b. To keep the same ratio of teachers to students, how many teachers should the school hire if the number of students increase to 800
Please do NOT answer with links!
Answer: a. 24:600
b. 53
Step-by-step explanation:
First simplify:
24:600
6:150
2:30
1:15
A certain circle can be represented by the following equation. x^2+y^2+16x-14y+49=0x 2 +y 2 +16x−14y+49=0x, squared, plus, y, squared, plus, 16, x, minus, 14, y, plus, 49, equals, 0 What is the center of this circle ? ((left parenthesis ,,comma ))right parenthesis What is the radius of this circle ? units
Answer:
center = (-8, 7)
radius = 8 units
Step-by-step explanation:
Equation of a circle: [tex](x-h)^2+(y-k)^2=r^2[/tex]
(where (h, k) is the center of the circle and r is the radius)
Rewrite the given equation:
[tex]x^2+y^2+16x-14y+49=0[/tex]
[tex]\implies x^2+16x+y^2-14y+49=0[/tex]
[tex]\implies (x+8)^2-64+(y-7)^2-49+49=0[/tex]
[tex]\implies (x+8)^2+(y-7)^2=64[/tex]
Therefore:
center = (-8, 7)radius: [tex]r^2=64 \implies r=\sqrt{64} =8[/tex]Answer:
The circle is centered at (8,0)
The circle has a radius of 10 units.
Step-by-step explanation:
trust
name the 3d shape formed by each net.
Answer:
1. Rectangular Prism
2. Cylinder
3. Triangular Pyramid
4. Triangular Prism
5. Cone
6 Rectangular Pyramid
Hello! Can someone help me, please? Thank you so much!
Topic: possibility.
How many double digit numbers are there where the two digits are different from each other ?
Answer:
81
Step-by-step explanation:
double digit numbers begin at 10 and end at 99
10 → 19 has 10 double digits
20 → 29 has 10 double digits
and so on up to 90 → 99
that is there are 90 double digits from 10 → 99
double digits with same value are 11, 22, 33, 44, 55, 66, 77, 88, 99
that is 9 double digits with the same value
Then double digits with different values = 90 - 9 = 81
Answer:
81 double digits numbers.
Step-by-step explanation:
From 1 to 99, first 9 numbers are single digit numbers
Double digit numbers = 99 - 9 =90
In this 90 numbers, 11,22,33,44,55,66,77,88,99 have same digits.
90 - 9 = 81
Choose the model for the problem 2/3 ÷ 2 .
Write the word 'MATHEMATICS' using line segments and observe the number of angles more than a right angle and number of angles less than a right angle
Answer:
Here is a diagram I made that shows all of the angles of the letters. (By to the way, letters I, C, and S don't have any angles, so I didn't include them.)
Step-by-step explanation:
Pls and help me with this !!!
Answer:
#20 is -20
#21 is -3
#22 is 36
The ratio of pencils to notebooks at a store is 5 to 3. Fill in the
The ratio of pencils to notebooks at a store is 5 to 3. Fill in the missing values to show the possible number of pencils and
notebooks.
Answer:
1st,15
2nd, 40
3rd, 36
Step-by-step explanation:
Find the perimeter of the triangle .
Answer:
P = 9x + 22
Step-by-step explanation:
Perimeter = sum of all sides
P = (3x + 11) + (3x + 11) + (3x)
P = 9x + 22
I hope this helps! God bless
Find an ordered pair that is a solution to the equation.
Answer:
[tex](x,y) = (4,1)[/tex]
Step-by-step explanation:
[tex]-4+5\cdot 1 = 5-4 =1[/tex]
Answer:
(2, 3/5)
Step-by-step explanation:
Step 1. Rewrite as slope-intercept form, y = mx + b (OPTIONAL)
-x + 5y = 1
5y = x + 1
y = 1/5x + 1/5
Step 2. Pick an x value, then sub for y
x = 2
y = 1/5(2) + 1/5
y = 2/5 + 1/5
y = 3/5
Ordered pair: (2, 3/5)
God bless!
20 points!!! please help
Do 13, 14, 15, and 16
Answer:
13. 360 14. 1080 15. x=53 16. x=135
Step-by-step explanation:
Equation: (n-2)*180
For 13. all angles in a a quadrilateral add up to 360
For 14. 8 sides-2=6. 180*6=1080 degrees
For 15. 15+155+137=307. 360-307=53. x=53 degrees
For 16. 6 sides-2=4. 4*180=720. 90*2=180. 720-180=540. 540/4=135.
x=135
please help me right now
Step-by-step explanation:
1. 3=5x-12
3+12=5x
15/5=x
3 = X
2. -3x + 5 = -13
-3x= -13 -5
x = -18/-3
x= 6
3. -x+6=4
-x =4-6
x=-2/-1
×=2
4.-4y=48
y =48/-4
y = -12
5. m/2=10
m=10×2
m=20
6.-2.5b=20.5
b = 20.5/-2.5
b = -4.2
7. ×/7+15=8
×/7 = 8-15
× = -7×7
× =-49
8. ⅓d-6=0
⅓d=6
d =6×3
d =18
9.(g-13)/4=9
g-13=9×4
g =36+13
g =49
10. (1-k)/5=5
1-k =5×5
-k =25-1
k =24/-1
k=-24