Answers
Answer:
y=7, x=7
Step-by-step explanation:
They both equal y, so you can set the right part of the equations equal to each other
4x-21=2x-7
solve for x
2x-21=-7
2x=14
x=7
knowing x, we can now substitute back into one of the original equations to find y
y=4(7)-21=28-21=7
or
y=2(7)-7=14-7=7
Related Questions
Please help me I really need it this is hard for me
Answers
Answer:
27.6 cm
Step-by-step explanation:
Answer: 44.6
Step-by-step explanation:
It’s not that hard use the formula of the volume of a sphere. And just replace the R with whatever your radius is, if you have a diameter just divide it by 2 to get the radius. Hope this helps
Use the substitution method to solve the system of equations.
5x + 2y = 1
y = -x + 2
Answers
Answer:
(x,y) = (-1,3)
Step-by-step explanation:
hope this helps!
How many solutions would there be for the following system of equations? y = 3x - 5 67 – 2g = 10 A 1 Solution B 2 Solutions c) No solution D Infinitely Many solutions
Answers
Answer:
D
Step-by-step explanation:
Given the 2 equations
y = 3x - 5 → (1)
6x - 2y = 10 → (2)
Substitute y = 3x - 5 into (2)
6x - 2(3x - 5) = 10
6x - 6x + 10 = 10 ( subtract 10 from both sides )
6x - 6x = 0 , that is
0 = 0 ← True
This indicates the system has infinitely many solutions → D
The solids are similar. Find the missing dimension(s).
Will mark brainlest if you give a full explanation 10 min!!!
Answers
Answer:
s = 4.5 cm
l= 3.75 cm
Step-by-step explanation:
Mathematically, when two shapes are similar, the ratio of their corresponding sides are equal
According to this rule, we have it that;
4/6 = 3/s
4 * s = 3 * 6
4s = 18
s = 18/4
s = 4.5 cm
Similarly;
4/5 = 3/l
4 * l = 5 * 3
4l = 15
l = 15/4
l = 3.75 cm
A car drove 5 miles in 30 minutes. How far will the car go in 1 hour?
Answers
Answer: 10 miles
Step-by-step explanation:
Practically, just look at it. 30 minutes = 5 miles, 60 minutes = 10 miles
Mathmatically, find the constant of proportionality.
30 minutes divided by 5 miles = 6 minutes per 1 mile. 60 minutes = 10 miles
help me its mathhhhh
Answers
Answer:
x=9 im pretty sure
Step-by-step explanation:
Which is the minimum or maximum value if the given function
А.
The function has a maximum value of -4.
B.
The function has a minimum value of -4.
C. The function has a maximum value of -3.
D
The function has a minimum value of -3
Answers
Thank you :)
The question is above!
;)
Answers
Answer:
umm 9/2
Step-by-step explanation:
please help with this ?!?
Answers
Diameter = 12
Radius = 6
Area of circle = (pi) r ^2
=pi 6^2
=36pi
Area = 113.1 cm^2
What is the solution to the system of equations?
-6x-2y = 8
1
X+ 3y = 29
O (10,-2)
O (10, 2)
O (2, 10)
O (-2, 10)
Answers
Step-by-step explanation:
-2,10 is the answer according to my working
PLS HELP I'LL GIVE YOU BRAINLIEST In a recipe you need 200 g of flour to make 8 cookies. Rosie has 480 g of flour. What is the greatest number of cookies rosie can make?
Answers
Answer:
19 cookies
Step-by-step explanation:
200/8 = 25
25 grams of flour in each cookie.
480/25 = 19.2
Rosie can make up to 19 cookies with 480g of flour
Answer:
The greatest number of cookies Rosie can make is 19 cookies.
Step-by-step explanation:
200g = 8 cookies
400g = 16 cookies
475g = 19 cookies
you only have 480 g of flour and 1 cookie uses 25 g of flour.
Your Welcome!
Which of the following graphs best represents a function that has a minimum value and x-intercepts of 3 and -1?
Answers
Answer:
a
Step-by-step explanation:
I have an hour to do this please help
Answers
Answer:
6
Step-by-step explanation:
27/9 =3
now 18/3
=6
PLEASE HELP ASAP!!!!!!!!!!!!!!!
Answers
Answer:
the answer is D
Step-by-step explanation:
y=[tex]x^{2}[/tex]+1
What is the volume of a box with 385 cubes and 11/3 x 5/3 x 7/3
Answers
Answer:
y
=
x
2
−
2
x
,
y
=
x
Step-by-step explanation:
please explain clearly
Answers
what is 21x+1 in simple form
Answers
Answer:
( 21 x X ) + 1
Step-by-step explanation:
look at photo to answer!
please help
Answers
Answer:
the answer is minus 2 ( -2)
Answer:
B
Step-by-step explanation:
This involves reading the coordinates of points from the graph
When x = 3 then y = - 2 , that is the point (3, - 2 )
b. If each square has a side length of 61 cm, write an expression for the surface area and another for the volume of the figure
Answers
Answer:
6*(61^2) and 61^3
Step-by-step explanation:
If the squares have a side length of 61 (assuming this is a cube) our surface area is 6*(61^2) because each side is a square and there are six sides.
As for the volume, we have 61^3.
Hope this was helpful.
~cloud
Here is an equation and all the steps Clare and Lin took to solve it. Are both of their solutions correct? Explain your reasoning.
Answers
Answer:
Both solutions are correct
Step-by-step explanation:
Given
Expression:
[tex]14x - 2x +3 = 3(5x + 9)[/tex]
See attachment for Clare and Lins' solution
Required
Determine if they are correct or not
[tex]14x - 2x +3 = 3(5x + 9)[/tex]
Open bracket
[tex]14x - 2x + 3 = 15x + 27[/tex]
Collect like terms
[tex]14x - 2x -15x = -3 + 27[/tex]
[tex]-3x = 24[/tex]
Divide by -3
[tex]x = \frac{24}{-3}[/tex]
[tex]x = -8[/tex]
Both solutions are correct
how many different four-digit ID tags can be made if repeats are allowed
Answers
Answer:
4!Explanation:
4! = 4×3×2×1 = 24
here's an example:
123412431324134214231432213421432314234124132431312431423214324134123421412341324213423143124321Find the volume of the cone.
please help me.
Answers
Answer:
46.08
Step-by-step explanation:
the formula for finding the volume of the cone is: V = π r^2 h/3
Insert the information provided (2 because half the diameter is the radius)
and solve. Hope this helps!
Find the area of the circle. Round your answer to the nearest hundredth. diameter 3in
Answers
Area of circle = pi × r squared
A= 3.14....× (1.5×1.5)
A= 7.068583471
A= 7.07in( to nearest hundredth)
Which statements are correct? Check all that apply. 5 students study both French and Spanish. 63 students study French. 2 students study neither French nor Spanish. 30 students study French, but not Spanish. 63 students study Spanish.
Answers
Answer:
The correct answers are:
• Option 1,
• Option 3 and
• Option 4
Step-by-step explanation:
From the two-way table, it is true that;
1.) 5 students study both French and Spanish.
2.) 30 students study French but not Spanish.
3.) 2 students study neither French nor Spanish
4.) 35 students study French
5.) 68 students study Spanish
6.) 63 students study Spanish but not French
This makes the correct answers options 1, 3 and 4
P.S: I believe your question is from the attached image
Answer:
A. 5 students study both French and Spanish.
C. 2 students study neither French nor Spanish.
D. 30 students study French, but not Spanish.
:)
Only one correct answer
Answers
Answer:
19
Step-by-step explanation:
ngl its kinda easy 5(2)+3(3) = 10+9 = 19
Answer:19
Step-by-step explanation:5x2=10+3x3=9 so 10+9=19
I need help with this , 7x-3y+4x-5y+8x-6y
Answers
Answer:
19x−14y
Steps:
7x-3y+4x-5y+8x-6y
=19x-3y-5y-6y
= 19x−14y
plz mark as brainliest
Answer:
19x-14y
Step-by-step explanation:
rearrange
7x+4x+8x-3y-5y-6y
solve the coefficient and add the variables
Simplify 2xy(4x+7-3y
Answers
Name the coordinates of P if P(0, 4) is rotated 180°
Answers
Answer:
P'(0, -4)
Step-by-step explanation:
when a coordinate (x, y) is rotated by 180 degrees, the resulting coordinate will be (-x, -y). Note that each coordinate is negated when rotated about 180 degrees
Given the coordinate P (0, 4). When rotated by 180 degrees, the resulting coordinate will be at P'(0, -4)
Help
I dont know the answer im not very smart
Answers
What is the diameter of a satellite dish with a circumference of 957.7?
Answers
Answer:
The diameter would be 305 m
Step-by-step explanation:
Answer:
305 assuming your using 3.14 for pi
Step-by-step explanation: