Answer:
Step-by-step explanation:
5m - 2n = 4
m - 4n = -1 add 4n to both sides m - 4n + 4n = 4n - 1
m = 4n - 1 now substitute for m into the first equation
5(4n -1) - 2n = 4
20n - 5 - 2n = 4 combine the n coeffients and add 5 to both sides
18n - 5 = 4 + 5
18n = 9 solve for n by dividing 18 by both sides
18 n/18 = 9 /18
n = 1/2 now find for m using m = 4n - 1 m = 4(1/2) - 1 m = 2 -1 = 1
m = 1 (1, 1/2) solves the two equations
3x + 5y = 11 equation 1
2x - y = 3 multiply both sides by 5 so when you add the two equation
the y term is eliminated (becomes zero)
5(2x-y) = 5(3)
10x - 5y = 15 equation 2 add equation 1 and equation 2
3x + 5y = 11 add the like terms
10x - 5y = 15 add the like terms
(3x + 10x) + (5y - 5y) = (11 + 15)
13x + 0 = 26 the y tern is gone now solve for x
13x = 26
13x/13 = 26/13
x = 2 now find y using 2x - y = 3
2x - y = 3 add y and subtract 3 from both sides
2x - y + (y - 3) = 3 + (y - 3)
2x - 3 = y we already know x = 2
2(2) - 3 = y
4 - 3 = y
1 = y answer (2,1) solves the two equaitons
help me pleaseeeeeeeeeeeeeeeee
Help me out please an thank you
Answer:
Answer is D
Step-by-step explanation:
because its sideways its x = y^2
and because its facing right its positive.
ill mark brainlist plss help
Answer:
345,512
Step-by-step explanation:
one liter is a thousand ml, so u just have to multiply
stuck on this hope someone can help me
Answer:
all are correct except the third one. the formula for that one should be v = a³ since it's a cube
Step-by-step explanation:
Subject:Mathematics
Divide 45 pens between devika bhoomika in the ratio 4:5
Answer:
20:25
Step-by-step explanation:
add how many parts (4+5=9)
45/9=5
4*5=20, 5*5=25
therefore, 20:25
What is the formula for the volume of a sphere?
V=(1/3)*(π)*(r*r)*(h)
V=π*r*r*h
V=b*l*h
V=(4/3)*(π)*(r*r*r)
Answer:
D,
Step-by-step explanation:
the volume of a sphere is 4/3πr^3
Question 1 A square has a perimeter given by the expression 20x + 24y Write an expression for the length of one side of the square.
Answer:
5x+6yStep-by-step explanation:
to understand thisyou need to know about:algebraPEMDAStips and formulas:parimeter of a square:4alet's solve:factor out 4 from the expression:4(5x+6y)therefore the length of one side of the square is 5x+6yAnswer:
[tex] \boxed{ \tt{s = 5x + 6y}}[/tex]
Step-by-step explanation:
[tex]let \: the \: perimeter \: be \to p \\ let \: the \: side \: be \to s \\ since \to \: p = 4s \\ then \to \: 4s = 20x + 24y \\ hence \to \: 4s = 4(5x + 6y) \\ therefore \to \: s = 5x + 6y[/tex]
Muffins come in 3 sizes, 4 flavors, and with or without nut toppings. How many combinations are in the sample space?
Answer:
9 combinations are in the sample space
Step-by-step explanation:
Well there's 3 sizes 4 flavors and with or without nuts
3(Sizes)+ 4(flavors)+ 2(with or without)
Therefor when you add those up you get 9 things people can choose from, known as the sample space.
Alexa wants to purchase some new supplies for making jewelry
Answer:
B A A
Step-by-step explanation:
Whats 1+1 and 2+2 and 3+7 I’m in the first grade
Answer:
1 answer is 2
2 answer 4
3 answer 10
Step-by-step explanation:
Add 1+1
get 2
Add 2+2
get 4
Add 3+7
get 10
Please Help!!! Find the approximate volume by using 3.14 (not the pi key) Round to the nearest hundredth when necessary show your work!
The approximate volume of first cone is 709[tex]mi^{3}[/tex] and the volume of second cone is 262 [tex]cm^{3}[/tex].
What is volume?Volume is amount of substance a container can hold in its capacity. Volume of cone is basically 1/3 *π[tex]r^{2}h[/tex] in which r is radius and h is height of cone.
How to calculate volume?We have been given two cones. First is having radius of 7 mi and
height 14 mi and second is having radius of 5 cm and height of 10 cm. We are required to find out the volume of both the cones.
Volume of first cone=1/3 *π[tex]7^{2}* 14[/tex]
=(49*3.14*14)/3
=708.86
Approximately 709 [tex]mi^{3}[/tex]
Volume of second cone =1/3π[tex]5^{2} *10[/tex]
=(25*3.14*10)/3
=261.67
Approximately 262 [tex]cm^{3}[/tex].
Hence the approximate volume of first cone is 709[tex]mi^{3}[/tex] and the volume of second cone is 262 [tex]cm^{3}[/tex].
Learn more about volume at https://brainly.com/question/463363
#SPJ2
-8x+2<114
Make sure to type “x” and the the inequality symbol “<,>,<_,_>”
3
The grid shown below is in the shape of a rectangle.
What is the area, in square units, of the shaded part of the rectangle?
А.
14
B
24
С
28
D
48
Answer:
hello
Step-by-step explanation:
but dear where is the picture?
Will mark brainliest hurryyy!!!
Given A=[-3 -4 1 0] B= [-7 -9 4 -1] and c=[-42 -20 5 4] What is the value of X in the matrix equation AX + B = C?
I had this question asked before lol
Answer:
X=[1 5 8 -1]
Step-by-step explanation:
B or Option 2
what is 5 times a number minus 3 is 12 ?
Answer:
5*x-3=12
the number is 3 because 5*3=15 and 15-3=12
Answer:
3
Step-by-step explanation:
x - 3 = 12
12 + 3 = 15
15 - 3 = 12
5( ? ) = 15
15/5
? = 3
5(3) = 15 - 3 = 12
Hope this helps dude
Brent leaves school to go home. He walks 10 blocks north and then 6 blocks west. If Brent could walk in a straight line to the school, what is the exact distance between Brent and school
Answer:
11.66 units
Step-by-step explanation:
Given that he walks 10 blocks north and then 6 blocks west..
When combined with the straight line to the school, this forms a right angled triangle with the straight line as the hypotenuse.
Hence, let the straight line be h
h^2 = 10^2 + 6^2 (using Pythagoras theorem)
h^2 = 100 + 36
h^2 = 136
h = √ 136
h = 11.66 units
Determine if the sequence is geometric. If it is, find the common ratio. ( -4, 12, -36, 108, ... )
Step-by-step explanation:
to know whether it is geometric progression or not, you need to find the common ratio. to find the ratio divide the (n+1)th term by n th term
so, 12/-4 = -3
also, -36/12 = -3
here u see the ratio is always same, i.e., common ratio.
thus u can say it is a geometric series with common ratio -3
help? part a:
Students at Sunnyside Middle School are selling tickets to the annual talent show. Below is a table showing ticket prices for students and adults.
Talent show ticket prices
Student Price $3
Adult Price $5
What amount of money would be collect if 60 students and 30 adults bought tickets? Show or explain how you got your answer.
Answer:
$330
Step-by-step explanation:
$3 times 60 students = $180
$5 times 30 adults = $150
$180 + $150 = $330
Answer:
Step-by-step explanation:
you would find your answer by multiplying the amount of students/adults by how much each ticket costs
60 x $3 = $180
30 x $5 = $150
$180 + $150 = $330
Rachel needs to drive a total of 205.2 miles. So far, she has driven 56 miles. How many more miles must Rachel drive?
miles
X 5 ?
Answer:
205.2/56 = 3.66428571
rounded answer 3.7 hours
Leon got a reduction of $40 on a Geometry set
which was marked $480.
(a) What fraction was the reduction?
(b) What percentage was the reduction?
(c) What percentage of the cost did Leon
pay for the Geometry set?
i need help with this asap! i will give brainliest :) (image included)
7 x 3 = 21 so it is 21 ft cm your welcome
Answer:
The answer is C = 63π
Step-by-step explanation:
V = πr2 h
V = π (3)2 x 7
V = π (9) (7)
V = 63 π
Express 0.0175 in scientific notation.
Answer:
Step-by-step explanation:
1.75 x 10^-2
Answer:To equal the original number, you would have to multiply 1.75 by 0.01 or 10-2. Therefore, the proper scientific notation for 0.0175 would be 1.75 x 10-2.
9 ( x + 4 ) = 63
Solving 2 step equations
Answer:
The answers is x=3
Step-by-step explanation:
Divide both sides by the numeric factor on the left side then solve.
Hope this helps.
May i please have a brainless Thank you.
What is the quotient? X+5√3x^2+4x+5 A.) 3x^2-11+60/x+5 B.) 3x-11+60/x+5 C.) 3x^2-11-50/x+5 D.) 3x-11-50/x+5 Please hurry this is timed!
Answer:
[tex]3x - 11[/tex]
Step-by-step explanation:
Given
[tex]\frac{3x^2 + 4x + 5}{x + 5}[/tex]
Required
Determine the quotient
First, we check if the divisor (x + 5) can divide the dividend (3x^2 + 4x + 5) without having a reminder
Equate the denominator to 0.
[tex]x + 5 = 0[/tex]
[tex]x = -5[/tex]
Substitute -5 for x in the numerator
[tex]3x^2 + 4x + 5 = 3*(-5)^2 + 4 * (-5) + 5[/tex]
[tex]3x^2 + 4x + 5 = 60[/tex]
This means that it has a reminder of 60
To get the quotient, we subtract 60 from the numerator and evaluate
[tex]\frac{3x^2 + 4x + 5}{x + 5}[/tex] becomes
[tex]\frac{3x^2 + 4x + 5 - 60}{x + 5}[/tex]
[tex]\frac{3x^2 + 4x - 55}{x + 5}[/tex]
Expand the numerator
[tex]\frac{3x^2 + 15x - 11x - 55}{x + 5}[/tex]
Factorize:
[tex]\frac{3x(x + 5) - 11(x + 5)}{x + 5}[/tex]
Factor out x + 5
[tex]\frac{(3x- 11)(x + 5)}{x + 5}[/tex]
Cancel out x + 5
[tex]3x - 11[/tex]
Hence, the quotient is [tex]3x - 11[/tex]
The ratio of green bags to white bags in the store is equal to 2 to 5.There are 30 white bags in the store how many green bags are there?
Answer:
12 green bags
Step-by-step explanation:
Given data
The given ratio of green bags to white bags is
=2 to 5
=2:5
Number of white bags=30
Applying the part to part method, let the number of green bags be x
so
2/5=x/30
cross multiply
30*2=5x
60=5x
divide both sides by 5
x= 60/5
x=12
Hence there are 12 green bags
(4c+3d) - (6c-6d) - (3c-5d)
Simplify please <3
Answer:
Solution
−5+14
Step-by-step explanation:
Distribute
(4+3)−1(6−6)−1(3−5)
(4+3)−6+6−1(3−5)
Distribute
(4+3)−6+6−1(3−5)
(4+3)−6+6−3+5
(4c+3d) - (6c-6d) - (3c-5d) (4+3)−6+6−3+5
4+3−6+6−3+5
Combine like terms
4+3−6+6−3+5
−5+3+6+5
Combine like terms
−5+3+6+5
−5+14
Solution
−5+14
Consider the rectangle. Which pair of expressions represents the perimeter of the rectangle?
PLEASE HELP!!!
Answer:
6x + 2 and 2x + (x + 1) + 2x + (x + 1)
Step-by-step explanation:
Perimeter of a rectangle = 2(length + width)
Length = 2x
Width = x + 1
Perimeter of a rectangle = 2(length + width)
= 2{2x + (x + 1)}
= 2(2x + x + 1)
= 2(3x + 1)
= 6x + 2
Perimeter = length + width + length + width
= 2x + (x + 1) + 2x + (x + 1)
pls i need help is dis qs :(
Answer:
Step-by-step explanation:
Fig 1
<f=180-2×30=180-60=120
<D and <E are base angle of isosceles triangle.
Fig 2
AB=AC=BC=8
All the side of equilateral are equal and all interior angle also equal.
Answer:
Step-by-step explanation:
a) ΔFED is isosceles triangle. EF = ED
∠F = ∠D =x {Angles opposite to equal sides are equal}
∠F + ∠E + ∠D = 180 {Angle sum property }
x +x + 30 = 180
2x + 30 = 180
2x = 180 -30
2x = 150
x = 150/2
x = 75
∠F = 75
b) All the angles are equal. So, it is an equilateral triangle. In equilateral triangle all sides are equal.
So, AB = 8
Write an equation in point-slope form of the line that passes through (-1,-4) with slope -2.
Answer:
y+4=-2(x+1)
Step-by-step explanation:
y-y1=m(x-x1)
y-(-4)=-2(x-(-1))
y+4=-2(x+1)