Answer:
Step-by-step explanation:
In order for us to be able to find our answer, we need to show our work.
-3(x-y=3) → -3x + 3y = -9
+2x - 3y = -1
____________________________
-1x = -10
-1 -1
We need to divide -1 both sides in order for us to be able to find our x-value but there's more to this than just solving for X.
x = 10
x - y = 3
10 - y = 3
-10 -10
_________________
-y = -7
-1 -1
We need to divide -1 both sides in order for us to be able to find our y-value. Please note that each y is equivalent to an invisible 1.
y = 7
As a result, your answer will be B.
What is the area of a circle if the diameter is 9cm?
Round to the nearest hundredth (0.01cm2)
Answer: A≈63.62
Step-by-step explanation:
9/2= 4.5
A=πr2=π·4.52≈63.61725
Answer:
To find the area of a circle we have [tex]\pir^{2}[/tex] and the radius is half of the diameter so we have 4.5² which gives 16.25π
how do you know when the square root of a positive integer is simplified
Answer: Simplifying a square root just means factoring out any perfect squares from the radicand, moving them to the left of the radical symbol, and leaving the other factor inside the radical symbol. If the number is a perfect square, then the radical sign will disappear once you write down its root. hope this helps can u give me brainliest or use this link it can help u
Step-by-step explanation:
8. a number increased by five and then divided by two
Answer:3
Step-by-step explanation:
1+5=6
6/2=3
Answer:
3
Step-by-step explanation:
------------Need help ----------
Y=3x-2
Answer: -8, -5, -2, 1, 4
Step-by-step explanation:
Y=3x-2
- Plug in the number for x.
x = -2, y = 3x - 2= 3(-2) - 2 = - 6 - 2= - 8
x = -1, y = 3x - 2= 3(-1) - 2 = - 3 - 2= - 5
x = 0, y = 3x - 2= 3(0) - 2 = 0- 2= - 2
x = 1, y = 3x - 2= 3(1) - 2 = 3 - 2= 1
x = 2, y = 3x - 2= 3(2) - 2 = 6 - 2= 4
you can estimate the number of days in the three months of april,may,and june using the eqation 3x30=90 what is the exact number of days in the three months
Answer:
Step-by-step explanation:
Donna's Garden Supply wants a 3-month moving-average forecast, including a forecast ... 3-Month Moving Average. January. February. March. April. May. June. July ... arbitrary because there is no set formula to determine them. ... ÈPO CH Compare the actual data with the data we forecast (using each of the two a values).
You spin a spinner and pick a card. How many outcomes are possible?
It's just 5 * 4 which is 20.
Pencils cost $.10 and erasers cost $0.25. steve bought 5 more pencils than erasers. he spent a total of $1.55. how many erasers did steve buy?
Answer:
Let x be the number of pencils Steve bought.
Let y be the number of erasers Steve bought.
x=y+5
0.1x + 0.25y = 1.55
Solving the system, our answer is: (8, 3)
So, she bought 3 erasers.
Let me know if this helps!
A man is 32 years older than his son. Ten years ago he was three times as old as his son. find the present age of each?
In a school, 4/5 of the students study a language.
Of those students who study a language, 1/3 study German
What is the ratio of students who study German to the students who do not study German?
Answer:
I agree with Emma
Step-by-step explanation:
above
Answer:
4 12
--- : ---
15 15
I think this might be the answer, but fair warning there is a high chance I am wrong.
The set of ordered pairs {(-2, 4), (x, 1), (1, 3), (2, 4)} is a function. Which is a possible value for x?
A. -2 B. 1 C. 2 D.3
Answer:
1
Step-by-step explanation:
if the simple interest on 2000 for 4 years is 4000 then what is the interest rate
Answer:
Principal = Rs 2000
Time = 4 years
Interest = Rs 400
Now, Interest= Principal×Rate×Time/100
400= 2000×R×4/100
R= 400×100/2000×4
Step-by-step explanation:
Hope it is helpful....
A central angle 0, in a circle of radius 4 ft intercepts an arc length of 50 ft.
Calculate the radian measure of 0.
Given:
The central angle = [tex]\theta[/tex]
Radius of the circle = 4 ft
Intercepted arc length = 50ft
To find:
The value of [tex]\theta [/tex] in radian measure.
Solution:
The formula for arc length is
[tex]s=r\theta[/tex]
where, r is radius and [tex]\theta [/tex] is the central angle in radians.
Putting s=50 and r=4, we get
[tex]50=4\theta[/tex]
Divide both sides by 4.
[tex]\dfrac{50}{4}=\theta[/tex]
[tex]12.5=\theta[/tex]
Therefore, the value of [tex]\theta [/tex] is 12.5 radians.
what is pi and how invented it??
Answer:
Step-by-step explanation:
The Egyptians calculated the area of a circle by a formula that gave the approximate value of 3.1605 for π. The first calculation of π was done by Archimedes of Syracuse (287–212 BC), one of the greatest mathematicians of the ancient world.
Answer:
π is a mathematical constant. Its commonly used value is 3.14. There is a expanded value for π. It appears in many formulas in all areas of mathematics and physics. In maths, it is commonly used for solving of circles and spheres.
The π was invented by Archimedes of Syracuse. He was one of the greatest mathematicians of the ancient world.
WILL MARK BRAINLIEST
Enter the values for the following composite transformation.
Translate
units left and _____ units down, then rotate _____°.
Answer:
down 6,right 4, rotate 180 degrees assuming we are starting from the blue heart.
Step-by-step explanation:
( guys this question is a music question it’s not a math question i just put math subject because they didn’t have music subject!! )
In terms of rhythm, notes are named for ...
A. how they look.
B. how long they last.
C. how fast they are.
D. how high or low-pitched they are.
Answer:
i think its d
Step-by-step explanation:
State whether the diagonals of each figure bisect each other
A: Parallelogram yes no
B: Square yes no
C: Kite yes no
D isosceles trapezoid yes no
Simplify the given expression below:
(3 + 4i) + (5 - 2i)
1) -2 + 6i
2) 2 - 2i
3) 7 +3i
4) 8 + 2i
Answer:
4) 8+2i
Step-by-step explanation:
When you expand you get 3+4i+5-2i
when you add the like terms you get 8+2i
Answer:
3
Step-by-step explanation:
The answer is 3 3+4 is 7 and 5-2 is 3
help me find the value of x!
Asap someone help me
Answer:
x= 11.4
Step-by-step explanation:
for the base of the triangles BC is 15 and DF is 5 so if 5 times 3 is 15 then you are reducing the other triangle to a third of the big triangles size. so 3.8 times three is 11 4
New York has an area of 49,108 square miles. Vermont has an area of 9,614 square miles. How much larger is New York than Vermont?
Answer:
39,494 square miles
Step-by-step explanation:
Simple: 49,108-9,614= 39,494 square miles
Which of the following is the product of the rational expressions shown
below?
2/x • 3/2x - 5
Answer:
Step-by-step explanation:
6/ 2x2-5x
The product of the rational expression 2/x(3/2 x-5) is 3-10/x.
What is expression?Expression is combination of numbers, fraction, symbols , coefficients, indeterminants or determinants. It shows a relationship between variables. It is mostly not found in equal to form.
How to find product?We have been given an expression 2/x(3/2 x-5) and we have to find the product of the expressions.
Product=2/x*3/2 x-2/x*5
To find the product of the expression, we have to multiply numerators with numerators and denominators with denominators and then perform the division part.
=6x/2x-10/x
=3-10/x
Hence the product of the rational expression 2/x(3/2 x-5) is 3-10/x.
Learn more about expression at https://brainly.com/question/723406
#SPJ2
A fruit seller brought 120 oranges for rs 500 and spent rs 60 for parking them into 10 boxes each containing a dozen oranges. If he sold a dozen of oranges for rs 58.8, find the profit percentage I know the answer it is 5% but I need the explanation for it in picture format it is also ok but in neat handwriting pls help
Answer:
First, we know that he spent rs500 plus rs60 in the whole process, then the total cost is:
C = rs500 + rs60 = rs560
Now he sells the oranges in packs of 12, then if he has 120 oranges, the total number of packs that he can sell is:
120/12 = 10
So he has 10 packs of 12 oranges.
And he sells each one for rs58.8
Then if he sells the 10 packs, the total revenue is:
R = 10*(rs58.8) = rs588
The profit is the difference between the revenue and the cost, here the profit is:
P = R - C = rs588 - rs560 = rs28
And the profit percentage is calculated as follows:
(P/C)*100%
Where P = profit and C = cost, then we have:
(rs28/rs560)*100% = 5%
Use the Triangle Inequality Property to determine whether a triangle can be formed with the given side lengths. 4 m, 8 m, 9 m *
Answer:
Therefore a triangle can be formed with side lengths of 4 m, 8 m, 9 m
Step-by-step explanation:
A triangle is a polygon with three sides and three angles. There are different types of triangles such as scalene, isosceles, equilateral and so on.
The triangle inequality property states that the sum of any two sides of a triangle must be greater than the third side. If a, b and c are the sides of a triangle then:
a + b > c; a + c > b; b + c > a
Given a triangle with side length 4 m, 8 m, 9 m:
4m + 8m = 12m > 9m
4m + 9m = 13m > 8m
8m + 9m = 17m > 4m
Therefore a triangle can be formed with side lengths of 4 m, 8 m, 9 m.
original price $135; 30%
Answer:
40.5
Step-by-step explanation:
dividing
An airplane is flying at 450 miles per hour. How many yards does the airplane fly in 30 min?
Answer:
the plane flies 396,000yd in 30 min
Step-by-step explanation:
450 / 2 = 225
1 mile = 1,760
225 * 1,760 = 396,000 yd
Plz mark as brainliest if this helped! Have a nice day!!!
-Lil_G
Step-by-step explanation:
450 miles = 1hour = 60mins
X miles = 30mins
cross multiply
450 × 30 = 60 × X
13500 = 60X
divide through by 60
225 = X
therefore, X = 225miles
now
1 mile= 1760 yards
225 miles = X
cross multiply
X = 1760 ×225
X = 396000 yards
convert 34% to a simplified fraction
Answer:
17/50
Step-by-step explanation:
mark as brainliest pls
A city has a population density of approximately 6,300 people /km2. The population is about 552,200 people. What is the approximate area of the city
Answer:
Step-by-step explanation:
552,200 people × (1 km²)/6,300 people) ≈ 87.65 km²
2) Solve the system of equations using substitution.
2x -- 9y = 14
x = -6y +7
Answer:
x= 7, y=0 (7,0)
Step-by-step explanation:
PLS HELP FAST ILL GIVE BRAINLIEST
When y=48, x=4.2. If the value of y varies directly with x, what is the value of y when the value of x is 10.6?
Answer:
y = 121.14
Step-by-step explanation:
For this, we will need to start by cross multiplying.
(4.2 * y) = (48 * 10.6)
4.2y = 508.8
to isolate the varible, we need to divide both sides by 4.2
y = 121.14
The area of a circle is 4pie cm2. What is the circumference, in centimeters? Express
your answer in terms of .
Answer:
4[tex]\pi[/tex]
Step-by-step explanation:
A = [tex]\pi[/tex][tex]r^{2}[/tex]
A = 4[tex]\pi[/tex] [tex]cm^{2}[/tex]
4[tex]\pi[/tex] =
4 = [tex]r^{2}[/tex]
2 = r
C = 2[tex]\pi[/tex]r
C = 2(2)[tex]\pi[/tex]
C = 4[tex]\pi[/tex]
