Three possible solutions when solving a system of equation are: one solution, no solution, and infinite solutions.
The 3 possible solutions of a system of equations are:
- Unique or one solution
- Infinite solutions
- No solution
In case of a system of linear equations, we can determine the type of its solution as follows:
- If the slopes are different, then their graphs will intercept in one point. Hence, the system of linear equation will have one solution.
- If the slopes are the same but the equation of the lines are different, the lines are parallel, hence they will not intercept. Therefore, there is no solution.
- If the linear equations are exactly (or can be transformed to exactly) the same equations, the solution is infinite.
Learn more about system of equations here:
https://brainly.com/question/12526075
#SPJ4
HELP I NEED AN ANSWER!!
Answer:
[tex]1)2 ~real ~ solutions[/tex]
[tex]2) 0 ~ real ~solutions[/tex]
[tex]3) 1~real ~solutions[/tex]
Step-by-step explanation:.
[tex]1) x^2+y^2=17[/tex]
[tex]y=-1/2x[/tex]
[tex]x^2+1/4x^2=17[/tex]
[tex]4x^2+x^2=68[/tex]
[tex]5x^2=68[/tex]
[tex]x^2=68[/tex]
[tex]x=[/tex] ± [tex]\sqrt{68/5}[/tex]
----------------------
[tex]2) y=x^2-7x+10[/tex]
[tex]y=-6x+5[/tex]
[tex]-6x+5=x2-7x+10[/tex]
[tex]x^2-x+5=0[/tex]
[tex]a=1[/tex]
[tex]b=-1[/tex]
[tex]c=5[/tex]
[tex]D=b^2-4ac[/tex]
[tex]=1-20[/tex]
[tex]=-19[/tex]
[tex]\sqrt{0} =\sqrt{-19}[/tex]
---------------------
[tex]3) y=-2x^2+19[/tex]
[tex]8x-y=-17[/tex]
[tex]8x+2x^2-9=-17[/tex]
[tex]8x+2x^2+8=0[/tex]
[tex]4x+x^2+4=0[/tex]
[tex]x^2+4x+4=0[/tex]
[tex]x^2+2x+2x+4=0[/tex]
[tex]x(x+2)+2(x+2)=0[/tex]
[tex](x+2)(x+2)^2=0[/tex]
[tex](x+2)^2=0[/tex]
[tex]x=-2[/tex]
------------------------------
hope it helps...
have a great day!!!
The area of a circle is 497 cm2. What is the circumference, in centimeters? Express
your answer in terms of .
FE
Answer:
14π
Step-by-step explanation:
Area πr^2= 49π sq cm
so r= 7 cm
perimeter= 2πr= 14π
How do you solve an acute triangle using trigonometry?
An acute triangle is a triangle with all angles measuring less than 90°.
To solve an acute triangle using trigonometry, we need to know the length of at least one side and at least one angle of the triangle.
For example, let's assume the triangle has side lengths a = 6, b = 8, and we know the angle A = 30°.
First, we can use the Law of Cosines to calculate the length of the third side, c:
c² = a² + b² - 2abcos(A)
c² = 6² + 8² - 2(6)(8)cos(30°)
c² = 64 - 96cos(30°)
c² = 64 - 48
c² = 16
c = 4
Now we can calculate the other two angles, B and C, using the Law of Sines:
sin(B) = sin(A) * c/a
sin(B) = sin(30°) * 4/6
sin(B) = 0.5 * 2/3
sin(B) = 0.3333
B ≈ 19.47°
sin(C) = sin(A) * c/b
sin(C) = sin(30°) * 4/8
sin(C) = 0.5 * 0.5
sin(C) = 0.25
C ≈ 14.04°
Therefore, the three angles of the triangle are A = 30°, B = 19.47°, and C = 14.04°, and the three sides are a = 6, b = 8, and c = 4.
Learn more about acute trianglehere:
https://brainly.com/question/16663764
#SPJ4
HELPPPPPPPPPPPPPPP PWEASEEE!!!
Sean is determining the number of quarters equal to different dollar amounts.
There is a proportional relationship between the amount of money in dollars, x, and the number of quarters, y.
what is the area of this figure?
Answer:
357.5cm^2
Step-by-step explanation:
Last year there
were 620 7th grade
students. This year
enrollment has
increased by 105%.
How many 7th
grade students are
there this year?
Answer: 1271
Step-by-step explanation:
620 + (105% × 620) =
620 + 105% × 620 =
(1 + 105%) × 620 =
(100% + 105%) × 620 =
205% × 620 =
205 ÷ 100 × 620 =
205 × 620 ÷ 100 =
127,100 ÷ 100 =
1,271
15 A manufacturer needs 51 pounds of plums to make 27
quarts of prune juice. How many pounds of plums
would the manufacturer need to make 18 quarts of prune
juice?
Answer:
34 pounds
Step-by-step explanation:
51 pounds of plum = 27 quarts
x pounds of plum = 18 quarts
(cross multiply)
27x = 918
divide both sides by 27
x=34 pounds
Answer correctly for brainliest (8th grade math)
eat a peppermint it will stimulate your small brain
PLEASE HELP,
10 POINTS + BRAINLIEST
Find the volume of the sphere. Round your answer to the nearest tenth.
Use 3.14 for
r = 7 in.
The volume of the sphere is about ____in^3.
Answer:
Step-by-step explanation:
1436 is the answer
You have a pitcher that holds 35.2 oz. of iced tea. If each glass holds 8.8 ounces, how many glasses can you completely fill?
Answer: 4
Step-by-step explanation:
35.2/ 8.8= 4
4
megan shaded 2/8 of the circle what is another way she could write this fraction
Answer:
Step-by-step explanation:
2/8 = 1/4
2/8 = 200/800
and so on.
There are an infinite number of possibilities here.
Answer:
1/4
Step-by-step explanation:
2/8 can be simplified to 1/4
2/8 divided by 2/2 = 1/4
but there are also many other ways
10/40,6/24, etc
21
Select the correct answer from the drop-down menu.
2.36 radians E
1.18 radians
B
IF AD= AB
. the ratio of the length of BC to the length of DE is
Reset
Next
Answer:
the answer should be 3/4
The ratio of the length of arc BC to length of arc DE is calculated as: 1/2.
What is the Length of an Arc?Length of an arc = ∅r, where r is radius, and ∅ is angle measure in radians.
AD = 2/3AB
Length of DE:
∅ = 1.18 + 2.36 = 3.54 radians
r = 2/3AB
Length of arc DE = (3.54)(2/3AB) = 2.36(AB)
Length of BC:
∅ = 1.18 radians
r = AB
Length of arc BC = (1.18)(AB) = 1.18(AB)
Ratio of the length of BC to DE = 1.18(AB) / 2.36(AB) = 1.18/2.36 = 1/2
Learn more about Length of arc on:
https://brainly.com/question/2005046
#SPJ2
Help please please help help me!!!!
Answer:
I got 126.12 in my notes
Step-by-step explanation:
PLEASE PLEASE HELP ME I DONT UNDERSTAND THIS SUBJECT PLESASE!!!!!!!!!!!!!!
Lyle borrowed $3,000 from the bank at a simple interest rate of 5.5%. The total amount Lyle paid the bank was $3,495. What was the amount of time Lyle had the loan?
____ years
Answer:
3
Step-by-step explanation:
Answer:
i belive those are the ones that are under 90 persent
Step-by-step explanation:
BRAINLIEST FOR THIS QUESTION
A shop sells orange juice in the following ways: 500 ml bottle for £1.40 2 litre carton for £2.50 each or 2 cartons for £4.50 3 litre carton for £3.50 What's the cheapest way of buying exactly 7 litres with no extra? Find the amount of each type of bottle or carton you need and the total cost of buying 7 litres.
The cheapest way of buying exactly 7 litres with no extra is buying 500 ml bottle for £1.40
The amount of buying 7 litres of orange juice at the cheapest buy is £2.52
What is the cheapest buy?500 ml bottle for £1.40
Convert ml to liters:
500 ml = 0.5 liters
Unit rate = 0.5/1.40
= £0.36 per liter
2 litre carton for £2.50
Unit rate = 2/2.50
= £0.8 per liter
2 cartons for £4.50
Unit rate = 2/4.50
= $0.44 per carton
3 litre carton for £3.50
Unit rate = 3 / 3.50
= £0.86 per liter
The cheapest buy per liter of the orange juice is buying 500 ml bottle for £1.40.
Therefore, the cost of 7 liters at the cheapest buy
= £0.36 per liter × 7
= £2.52
Read more unit rate:
https://brainly.com/question/19493296
#SPJ1
A rectangle has a perimeter of 16 centimeters. The lengths of the sides of the rectangle are between 1 centimeter and 7 centimeters. If x represents the length of a side of the rectangle, then the rectangle's area is represented by x(8-x) square centimeters. Suppose a square is constructed to have the same area as this rectangle. The length of a side of the square is represented by centimeters. What is the range of possible perimeters of the square? Round answers to the nearest hundredth of a centimeter.
The range of possible perimeters of the square=10.583
What is area of a rectangle?Area of a rectangle (A) is the product of its length (l) and width (w).
A= l. w
here, we have,
A rectangle has a perimeter of 16 centimeters.
The lengths of the sides of the rectangle are between 1 centimeter and 7 centimeters.
let, x represents the length of a side of the rectangle,
then the rectangle's area is represented by x(8-x) square centimeters.
i.e. area of square = 8x-x^2
the side = √x(8-x)
perimeter= 4×√x(8-x)
Hence, the range of possible perimeters of the square=10.583
To learn more on Area click:
brainly.com/question/20693059
#SPJ2
SAFF (Students against Fatty Food) is a group of students who are protesting the food in high school cafeterias. At a recent rally, the students covered the first 40 yards by 40 yards of the football field. There were 24 students in each 8 feet by 8 feet square. How many students were present at the rally?
By unitary method 24 students/(64/9) yards squared times 1600 yards squared equals 5400 students.
What is unitary method ?The unit technique is an approach to problem-solving that involves first determining the value of a single unit, then multiplying that value to determine the required value. The unit method, to put it simply, is used to extract a single unit value from a supplied multiple. For instance, 40 pens would cost 400 rupees, or the price of one pen. The process for doing this may be standardized. a single country. anything that has an identity element. (mathematics, algebra) (Linear algebra, mathematical analysis, mathematics of matrices or operators) Its adjoint and reciprocal are equivalent.
Students traverse a total area of 40 yards by 40 yards, or 1600 yards.
24 kids covered an area of 8 ft x 8 ft, or (8 ft x 1 yd/3 ft)2 = [(8/3) yard]2 = (64/9) yd.
The number of students present is calculated by multiplying the number of students per yard, or 24 students/(64/9) yd2, by the area that students cover.
Therefore: 24 students/(64/9) yards squared times 1600 yards squared equals 5400 students.
To know more about unitary method visit:
https://brainly.com/question/28276953
#SPJ4
Find the radius r of the circle. Round your answer to the nearest tenth.
Answer:
it might be 2.6
Step-by-step explanation:
im assuming the 16.3 is the circumfrence, so if you follow the formula for circumfrence (2πr) the radius would be 2.6. hope this is correct
The radius r of the circle is 4.4 yd .
What is sector of circle?A circular sector, also known as circle sector or disk sector, is the portion of a disk enclosed by two radii and an arc, where the smaller area is known as the minor sector and the larger being the major sector.
What is length of arc?For a circle, the arc length formula is θ times the radius of a circle.
Arc Length = 2 π r (θ/360°)
where,
r = radius of circle
θ = angle of Sector
According to the question
Arc Length of circle = 16.3 yd
Angle of sector= 240°
By using arc length formula
Arc Length = 2 π r (θ/360°)
substituting the value
16.3 = 2π r (240°/360°)
16.3 = 2π r * [tex]\frac{2}{3}[/tex]
16.3 * 3 = 4π r
54.9 = 4π r
As π = [tex]\frac{22}{7}[/tex]
54.9 = 4 * [tex]\frac{22}{7}[/tex] r
54.9 * 7 = 88 r
384.3 = 88 r
r = 4.4 yd
Hence, The radius r of the circle is 4.4 yd .
To know more about sector of circle and length of arc here:
https://brainly.com/question/2571307
#SPJ2
Please help! This question is really confusing me!
Answer:
The area is the square unit.
Let the scale factor is k.
The unit circle has area of π.
Similar circle is k times the unit circle.
r₂/ r₁ = kThe ratio of areas is the square of the scale factor:
A₂/A₁ = k²If the scale factor is r, then the area of the circle with radius of r is:
A₂ = A₁k² = A₁r²Since A₁ = π, the area of A₂ is:
A₂ = π*r² = πr²7: There are 13 visitors at Al Shaheed Park today. This is 20 % of the normal
amount of visitors. How many visitors would there normally be today?
Answer:
65
Step-by-step explanation:
20% is 1/5 of 100.
multiply 13 by 5 to get the original amount of numbers. you can proof check it by doing
13/65 which is 0.2. multiply the decimal by 100 and you get 20. which is 20%
What is the value of y?
A. 83
B. 89
C. 96
D. 97
Answer:
A. 83 is the correct option.
Step-by-step explanation:
all angles of a triangle are always equal to 180.
46 + 51 + y = 180
97 + y = 180
180 - 97 = 83
Have a nice day! :-)
A car is traveling on a small highway and is either going 55 miles per hour or 35 miles per hour, depending on the speed limits, until it reaches its destination 200 miles away. Letting x represent the amount of time in hours that the car is going 55 miles per hour, and y being the time in hours that the car is going 35 miles per hour, an equation describing the relationship is: 55x+35y=200
A: If the car spends 2.5 hours going 35 miles per hour on the trip, how long does it spend going 55 miles per hour?
B: If the car spends 3 hours going 55 miles per hour on the trip, how long does it spend going 35 miles per hour?
C: If the car spends no time going 35 miles per hour, how long would the trip take? Explain your reasoning.
Answer:
A. The car spends 2.05 hours going 55 miles per hour
B. The car spends 1 hour going 35 miles per hour
C. The trip takes 3.6 hour
Step-by-step explanation:
The equation is
55x+35y=200
Let's solve A
We know the car spends 2.5 hours going 35 miles per hour on the trip, so we put 2.5 in for y and solve for x
55x+35(2.5) = 200
55x + 87.5 = 200
55x = 112.8
x = 2.05 hours going 55 miles per hour
So, the car spends 2.05 hours going 55 miles per hour
Let's solve B
55(3)+35y=200
165 + 35y = 200
35y = 35
y = 1 hour
So, the car spends 1 hour going 35 miles per hour
Let's solve C
We know the car spends no time going 35 miles per hour, so we put 0 in for y and solve for x
55x+35(0)=200
55x = 200
x = 3.6 hours
So, the trip takes 3.6 hour
3. A bank is offering 4.5% simple interest on a savings account. If you deposit $8,000, how much interest will you earn in five years? (2 Points) A. $260 B. $720 C. $1,800 D. $3,600
Answer:
Answer c 1,800
Step-by-step explanation:
The total interest at the rate of 4.5% interest of the amount of $8000 will be $1800 hence option (C) will be correct.
What is simple interest?Simple interest is a way to figure out how much interest will be charged on a sum of money at a specific rate and for a specific duration of time.
Simple interest has a constant principal amount, as opposed to compound interest, which multiplies the interest from the principal of previous years to calculate the interest of the subsequent year.
Given that
Principle amount (P) = $8000
Rate of interest (R) = 4.5%
Time period (T) = 5 years.
The interest in the T time period has been given by
Total interest = PRT/100
So,
Total interest = 8000×4.5×5/100 = 1800
So total interest of the given amount will be $1800.
For more about simple interests,
https://brainly.com/question/25845758
#SPJ2
Can someone help me find x for both
On solving the provided question, we can say that - the value of x in triangle ABD is = 60
What is triangle?Three sides and three vertices make up a triangle, which is a polygon. It is among the fundamental forms in geometry. Triangle ABC is the name given to a triangle with vertices A, B, and C. When the three points are not collinear, a unique plane and triangle in Euclidean geometry are found. A triangle is a polygon that has three sides and three corners. The spots where the three sides join end to end make up the triangle's corners. Three triangle angles added together equal 180 degrees.
here, in triangle ABD
x = 60
as its acute angle
To know more about triangle visit:
https://brainly.com/question/2773823
#SPJ1
please help will mark brainliest
After diving the polynomials, the quotient and remainder is q(x)=-x^2+1 and r(x)=-1 respectively.
What are polynomials?
The word "polynomial" is derived from the Greek words "poly" and "nominal," which combined translate to "many phrases." There is no limit to the number of terms that can exist in a polynomial.
The polynomials are -
a(x)=-x^4
b(x)=x^2+1
Divide a(x) by b(x).
-x^4/x^2+1 = -x^2+1 with remainder as -1.
The quotient is obtained as q(x)=-x^2+1 and the remainder is r(x)=-1.
The given equation is -
a(x)/b(x)=q(x)+[r(x)/b(x)]
Plugging in all the values -
-x^4/x^2+1=-x^2+1+[-1/x^2+1]
[-x^4/x^2+1]-[-1/x^2+1]=-x^2-1
-x^4+1/x^2+1=-x^2-1
-x^4+1=[-x^2+1][x^2+1]
-x^4+1=(-x)^2[x^2+1]+(1)[x^2+1]
-x^4+1=-x^4-x^2+x^2+1
-x^4+1=-x^4-1
So, LHS=RHS is proved using the equation.
Therefore, the quotient is q(x)=-x^2+1 and the remainder is r(x)=-1.
To learn more about polynomials from the given link
https://brainly.com/question/4142886
#SPJ1
What are 3 completed examples for systems of equations?
Answer:
There are three ways to solve systems of linear equations: substitution, elimination, and graphing.
school has 8 periods a day each of 45 minutes’ duration. How long would each period be, if the school has 9 periods a day, assuming the number of school hours to be the same?
Answer:
40 min per period
Step-by-step explanation:
When it has 8 periods :
Total time = 45 min per period for 8 period
Total time = 45 × 8 min
When it has 9 periods : let each period be of x min
Total time = x min per period for 9 period
Total time = x × 9 min
As total time remains same,
45 × 8 = x × 9
5 x 8 = x
40 = x
What is the sum in simplest form?
4.5 + 1 3/5
Answer: 6 1/10
Step-by-step explanation:
Homework please help
Answer:
c. infinitely many solutions
Step-by-step explanation:
hope this helps :)
What value of n makes this equation true?
0.7n + 0.8n = 2.1
A. n = 0.60
B. n = 1.40
C. n = 3.15
D. n = 3.60
0.7n+0.8n=2.1
1.5n=2.1
n=1.4
Therefore, the answer is B.
Answer:
B). n = 1.40
Step-by-step explanation:
0.7n + 0.8n = 2.1
(0.7n + 0.8n) = 2.1
1.5n = 2.1
/1.5 /1.5
n = 1.40
hope this helped!