Answer:
4x+-6y=7
Step-by-step explanation:
hope this helps
Answer:
x= -3
y= -2
Step-by-step explanation:
(1) x + 2y= -7
(2) 3x - 8y= 7
Balance a term in both equations for elimination
Equation (1) x (3) 3x + 6y= -21
Equation (2) x (-1) -3x + 8y= -7
After the calculation, it will result to:
14y= -28
Divide both sides by the coefficient of y
This will result to:
y= -2
From equation (1):
x + 2y= -7
Insert the unit of y (-2)
x + 2(-2)= -7
x - 4= -7
Collect like and unlike terms
x= 4 -7
x= -3
TO CHECK:
3x - 8y= 7
Insert the solved units
3(-3) - 8(-2)= 7
-9 - (-16)= 7
-9 + 16= 7
16 - 9= 7
CORRECT!!!
A clerk mixes a 15 pound a 15 pound bag of nuts for a customer. peanuts cost $ 5.50 5.50 per pound pound amd cashews cost $ 7.60 7.60 per pound . Pound . the total cost comes to $ 75.50 write a system of equations to find how many pounds of peanuts and how many pounds of cashew are in the bag
Answer:
[tex]x+y= 15---------------------1\\\\5.5x+7.6y= 75.5----------------2[/tex]
Step-by-step explanation:
Given data
let the number of peanuts be x
and the number of cashew be y
so
x+y= 15---------------------1
and
5.5x+7.6y= 75.5----------------2
Hence the system of equation is given as
[tex]x+y= 15---------------------1\\\\5.5x+7.6y= 75.5----------------2[/tex]
(7) Length of the base of a triangle is 12 cm.if the base is triple the height,
The area of the triangle = ?
(a) 36 cm
(c) 24 cm
(b) 144 cm
(d) none of the previous
Can someone please solve this with steps?
What is the constant of proportionality in the table below
Answer:
1/3
Step-by-step explanation:
Y/x=k that is the equation for constant of proportionality
2/6=k
1/3=k
Use the Pythagorean’s Theorem to find the missing side of each triangle
Answer:
131 is prime. So the answer is A
Step-by-step explanation:
Remark
x is one of the legs. The other one is √65
Equation
x^2 + (√65)^2 = 14^2
Solution
x^2 + 65 = 196 Subtract 65 from both sides
x^2 = 196 - 65
x^2 = 131 Take the square root of both sides.
√x^2 = √131
x = √131
This Venn diagram illustrates the sample space of the numbers.
Complete the table by filling in the values for each region of the sample space.
Answer:
Image attached below
Explanation:
Plato answer
Answer:
Event | ValuesE1 | 1, 3, 5, 7, 9, 12, 14, 16, 18, 19, 21, 23, 25, 27, 30, 32, 34, 36 E2 | 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35E1 & E2 | 1, 3, 5, 7, 9, 19, 21, 23, 25, 27 E1 or E2 | 1, 3, 5, 7, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 23, 25, 27, 29, 30, 31, 32, 33, 34, 35, 36Step-by-step explanation:
plato / edmentum answer
Help
I will give u 10 points
Answer:
D 30
Step-by-step explanation:
each angle in the hexagon=120°
angleSMN=120°
all triangles =180° in total
180-120= 60
60÷2 =30
remaining 2 angles = 30° each
Solve the equations that have variables on both sides, find your answers in the legend below: *
I HAVE PUT THIS QUESTION OUT 5 TIMES PLEASE ANACER
Answer:2=B , -3=T. 5=S. 40=L
Step-by-step explanation:
Find the output, y, when the input, x, is -1.
Answer:
the output is 3
Step-by-step explanation:
look for the point on the graph whose coordinate is -1
the point on the graph whose x coordinate is -1 is (-1,3)
so its 3
Brittany bought a dress that cost $22.50. If the sales tax is 6.5%, how much tax did she pay?
Answer:
$1.46
Step-step explanation:
We have to find out what 6.5% of 22.5 is, our keyword is of, so we're multiplying. Our equation is:
22.5 x 0.065 = 1.46
So our tax is $1.46
Determine whether(-8,-3) is a solution of 2x -8=1 is (-8,-3) a solution to the equation ?
Answer:
No
Step-by-step explanation:
(-8,-3) does not land on the line 2x-8=1
what is the perimeter of this triangle?
Answer:
its answer is A
Step-by-step explanation:
as perimeter is tge edition of all sides
Answer:
12, i think
Step-by-step explanation:
I cant really see the umbers, so I guessed
A bus travels 18km in 30 minutes .What is the average speed of the bus?
Answer:
18/30 = 0.6 km/hr
Step-by-step explanation:
Which sets of ordered pairs show equivalent ratios? (1, 2), (2, 3), (4, 7) (2, 2), (4, 4), (6, 6) (3, 1), (4, 1), (5, 1) (4, 1), (8, 2), (12, 3) (2, 1), (4, 3), (5, 4)
Given:
The different sets of ordered pairs in the options.
To find:
The sets of ordered pairs that show equivalent ratios
Solution:
The set of ordered pairs show equivalent ratios, if
[tex]\dfrac{y}{x}=k[/tex]
Where, k is a constant.
For option 1,
(1, 2), (2, 3), (4, 7)
[tex]\dfrac{2}{1}\neq \dfrac{3}{2}[/tex]
For option 2,
(2, 2), (4, 4), (6, 6)
[tex]\dfrac{2}{2}=\dfrac{4}{4}=\dfrac{6}{6}=1=k[/tex]
The set of ordered pairs (2, 2), (4, 4), (6, 6) show equivalent ratios.
For option 3,
(3, 1), (4, 1), (5, 1)
[tex]\dfrac{1}{3}\neq \dfrac{1}{4}[/tex]
For option 4,
(4, 1), (8, 2), (12, 3)
[tex]\dfrac{1}{4}=\dfrac{2}{8}=\dfrac{3}{12}=k[/tex]
The set of ordered pairs (4, 1), (8, 2), (12, 3) show equivalent ratios.
For option 5,
(2, 1), (4, 3), (5, 4)
[tex]\dfrac{1}{2}\neq \dfrac{3}{4}[/tex]
So, sets of ordered pairs in options 1, 3 and 5 does not show equivalent ratios.
Therefore, the correct options are 2 and 4.
Simplify the expression 4m+8+3m
Answer: 7m+8
Step-by-step explanation:
2^4 = which number is the base?
Answer:
2
Step-by-step explanation:
cuz it's the number below
I toss a coin 20 times. comes up "Heads" 7 times. What is the 1 point
relative frequency of getting a "Head"?
Someone help please I have to finish this quickly—
Answer in fraction form = 7/20
Answer in decimal form = 0.35
Answer in percent form = 35%
These are three ways to say the same thing.
======================================================
Explanation:
To get the relative frequency, you divide the number of times heads comes up out of the number of tosses total. Reduce the fraction as much as possible. In this case, 7 and 20 have no factors (other than 1) in common. So the fraction 7/20 cannot be reduced further.
The fraction 7/20 converts to the decimal form 0.35 after using a calculator or long division.
0.35 converts to 35% after moving the decimal over to the right two spots.
Water makes up 3.4 of a person's weight. If a student weighs 100 lbs., how much of his weigh is water?
Answer:
75
Step-by-step explanation:
To determine how much of a persons weight is water, multiply 3/4 by their weight.
weight of water = weight x 3/4
100 x 3/4 0r 100 x 0.75 ( same thing)
75
The student weighs 75 lbs underwater
P.S it's not 3.4 it's 3/4 = 75% of our body is made up of water.
how many units apart are (3.1,-1) and (4.1,-1)
Answer:
The points are 1 unit apart.
Step-by-step explanation:
Given points are:
(3.1,-1) and (4.1,-1)
Distance formula is given by;
Distance between points = [tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2[/tex]
Where,
[tex](x_1,y_1)[/tex] = Coordinates of first point
[tex](x_2,y_2)[/tex] = Coordinates of the second point
Putting the values,
Distance = [tex]\sqrt{(4.1-3.1)^2 + (-1-(-1))^2[/tex]
Distance = [tex]\sqrt{(1)^2 + (-1+1)^2[/tex]
Distance = [tex]\sqrt{(1)^2}[/tex]
Distance = 1 unit
Hence,
The points are 1 unit apart.
Write
73/50
as a decimal.
Answer:
1.46
Step-by-step explanation:
We know that
[tex]\frac{73}{50}[/tex]
is the same as
73÷50
Then using
Long Division for 73 divided by 50
and rounding to a Max of 3 Decimal Places gives us
=1.46
have a wonderful day
Use the diagram below to solve for the missing angles, XYZ. Please help!
Answer:
z=50
y and x=65
Step-by-step explanation:
z=180-130=50 because the total angles on a straight line sum up to 180
x and y=(180-50)/2=65 because 2 angles in an isosceles triangle are equal
HURRRY DUE IN 1 HR HEEELLLLPPP
Answer:
3* 2*3*2 is n
Step-by-step explanation: well find a way to put 3 and 2 two times in expressions and expressions have no equal signs steer clear of that.
36n + 30
Greatest common factor of this?
PLZ HURRY
which expression is equivalent to (5r + 2) +- (4x - 3)?
Step-by-step explanation:
Answer : 5r−4x+5
hope I helped c:
Insta: brianna_editsz
х+2y = 9
3х + 5y = 20
Answer:
x=-5 y=7
good luck :)
What is the common difference of the set {(1, 0), (2, 2), (3, 4), (4, 6), (5, 8)}?
An experiment consists of spinning the spinner
below. What is the theoretical probability it will
land on green?
Green
Yellow
Red
Red
Green
Yellow Green
0.43
0.5
0.75
0.375
Answer:
total outcomes= 8
green = 3
probability to get green = 3/8 = 0.375
The length of a rectangle is 5(x+2) units. The width of the rectangle measures (2x-1) units. Set up and simplify an alegebraic expression to find the difference between the rectangles length and width.
Answer:
(3x + 11) units
Step-by-step explanation:
The length of a rectangle is 5(x+2) units.
The width of the rectangle measures (2x-1) units.
The difference between the rectangles length and width is given as:
Length - Width
(5(x + 2) - (2x - 1) units
(5x + 10 - 2x + 1) units
(5x - 2x + 10 + 1) units
(3x + 11) units
Therefore, the algebraic expression for the difference between the rectangles length and width is given as:
(3x + 9) units
Here are the first four terms of a sequence.
4
11
22
37
Find an expression, in terms of n, for the nth term of this sequence.
Answer:
aₙ = 2n² + n + 1Step-by-step explanation:
We observe that the difference of terms is 4, 7 and 15 and next level difference is 4. It means the sequence is quadratic.
We can compare this with simple quadratic sequence
1, 4, 9, 16and find out that doubling each term gives us
2, 8, 18, 32This is close to our sequence, write the terms as follows to find exact rule
The first term:
a₁ = 4 = 2*1² + 2 = 2*1² + 1 + 1The second term
a₂ = 11 = 2*2² + 3 = 2*2² + 2 + 1The third term:
a₃ = 22 = 2*3² + 4 = 2*3² + 3 + 1The fourth term:
a₄ = 37 = 2*4² + 5 = 2*4² + 4 + 1The nth term as per observation above is:
aₙ = 2n² + n + 1Answer:
Step-by-step explanation:
(Anyone?) it’s easy just do it pls
Answer:
if it's easy why dont you do it,that picture dont even take good
Rebecca bought one gold fish ($32) and one star fish ($12). She spends the rest of her money on guppy fish. She starts with $80. Each guppy costs $6. Write an inequality for the number of guppies she can purchase.
Answer:
she can purchase 36 guppies
Step-by-step explanation:
80-32=48, 48-12=36
