Solve the system by substitution.
-3x-4y=11
y=2x
Answer:
x = -1, y = -2
Step-by-step explanation:
-3x-4y=11
y=2x
Plug in 2x for y:
-3x-4(2x)=11
-3x-8x = 11
-11x = 11
x =-1
Plug in x in y = 2x
y = 2(-1)
y = -2
Answer:(-1,-2)
Step-by-step explanation:
Please help (15 points)
Answer:
a=5 b=8 c=4
Step-by-step explanation:i hope this is right
What is 4and2/14 as an improper fraction in lowest terms
Answer: 58 14ths
Step-by-step explanation:
multiply 14 by 4 to get 56 14ths, then add the 2
Answer:
58/14
Step-by-step explanation:
4 and 2/14= 4*4*4*4 = 56 + 2 = 58/14
Trevor read a total of 36 books over 9 months. If Trevor has read 52 books so far, how many months has he been with his book club? Assume the relationship is directly proportional.
? months
I HAVE MORE QUESTIONS
Simplify 4(-8x + 5) – (-33x – 26)
Answer:
the answer is most likely to be (x+46)
THIS IS EASY!! PLS HELP ME! ASAP PLS
Eliza claims that the two squares are congruent. Which statement could be used to prove Eliza's claim?
A) Any two squares are congruent since all squares have angles of 90 degrees
B) The two squares are congruent since a translation carries one square onto the other.
C) Any two squares are congruent since all four sides of any square are congruent.
D) The two squares are congruent since a rotation about the origin carries one square onto the other.
Answer:
A
Step-by-step explanation:
I Hope this helps you out!
Eliza claims that the two squares are congruent. The statement that could be used to prove Eliza's claim can be found in Option A.
Any two squares are congruent since all squares have angles of 90 degrees.
A figure is said to be congruent if they have similar angles and the position of each shape corresponds to each other.
From the given figure attached to the question, we can see that the two shapes in the figure are squares, and they are located at 2 units each from the origin. The angles of each shape are 90° to the horizontal line and they are perpendicular to each other.
The two squares may not be congruent since not only translation carries one square onto the other, from the figure in the question, it may be a reflection and not only translation.
Also, only the sides of a shape cannot be used as a determining factor to determine if a shape is congruent or not.
Therefore, we can conclude that any two squares are congruent since all squares have angles of 90 degrees.
Learn more about congruent angles here:
https://brainly.com/question/16448127?referrer=searchResults
Which sets of ordered pairs represent a function? Select all that apply.
A {(3,5), (4, -1), (2, -1), (2, 7), (-3, 6)}
B {(-3, 9), (-2, 4), (-1, 1), (0, 0), (1, 1)}
C {(1, 1), (4, 2), (9, 3), (16, 4), (25, 5)}
D {(9, -3), (4, -2), (1, -1), (0, 0), (1, 1)}
Answer:
C because X values can't be repeated
Step-by-step explanation:
purchased a DVD player on sale. The original selling price was $. The sale price was $.
what are the prices?
Determine if each sequence is an arithmetic sequence. If yes, find the common difference.
1. 10,12,15,19,…
2. If there is, what is the common difference?
Answer: Yes, add one more each time you add
Step-by-step explanation:
Which of the following is a solution to the system? Show your work.
3x+2y=-3
3x-y=6
Group of answer choices
(-1, 0)
(1, -3)
(2, 0)
LaTeX: (0,-\frac{3}{2})
Answer:
(1, -3) is a solution to the system of equations ⇒ B
Step-by-step explanation:
Let us solve the system of equations
∵ 3x + 2y = -3 ⇒ (1)
∵ 3x - y = 6 ⇒ (2)
→ Subtract equation (2) from equation (1)
∵ (3x - 3x) + (2y - -y) = (-3 - 6)
∴ (0) + (2y + y) = (-9)
∴ 3y = -9
→ Divide both sides by 3 to find y
∴ y = -3
→ Substitute the value of y in equation (2) to find x
∵ 3x - (-3) = 6
∴ 3x + 3 = 6
→ Subtract 3 from both sides
∵ 3x + 3 - 3 = 6 - 3
∴ 3x = 3
→ Divide both sides by 3 to find x
∴ x = 1
To check the answer substitute the values of x any in each equation if the two sides of the equation are equal, then the solution is right
∵ 3x + 2y = -3
∵ 3(1) + 2(-3) = -3
∴ 3 - 6 = -3
∴ -3 = -3
→ The two sides of the equation are equal
∵ 3x - y = 6
∵ 3(1) - (-3) = 6
∴ 3 + 3 = 6
∴ 6 = 6
→ The two sides of the equation are equal
∴ The solution satisfies the two equations
∴ (1, -3) is a solution to the system
What is the point slope form of the line with slope that passes through the point (-4, - 7)?
y+4= (x + 7)
y-4= }(x-7)
y-7= (x - 4)
y+7= (x+4)
Jordan has traveled 255 miles out of 340 miles on a trip. What percent of the total distance has he traveled?
A. 73%
B. 82%
C.75%
D. 70%
Answer:
75%
Step-by-step explanation:
Just do long division and get c.75%
Pls mark brainliest
Answer:
75%
Step-by-step explanation:
I swear it is right.
5 divided by 9/10 as a fraction
Answer:
5/1. 9/10 ÷ 5 = 9/50
Step-by-step explanation:
a whole number 5 can be written as 5/1. 9/10 ÷ 5 = 9/50 in fraction form.
hope this helped. Let me know if i was right. Im sorry if I was wrong Im not so good at math.
In Beijing in 2008, the Women's 3,000 meter Steeplechase became an Olympic event. What is this distance in kilometers
Answer:
The distance would be 3 kilometers
Step-by-step explanation:
Each kilometer is 1,000 meters. Divide 3,000/1,000= 3
2. Solve the system of equations.
1
ży 22
—1
x + 3y = 2 = 10
11/x + 2
+ z = -4
9514 1404 393
Answer:
(x, y, z) = (2, 1, -5)
Step-by-step explanation:
There are numerous equation solvers available on the web. The attached result is from one of them.
__
You may find it easier to solve these by hand if you eliminate fractions.
2x -y +z = -2x +3y -z = 10x +0y +2z = -8The first step is to look to see what you have, then formulate a strategy for getting a solution. Because the equations containing y have opposite coefficients, one of which is -1, we choose to use those to eliminate y. Immediately, we will have two equations in x and z.
If you multiply the first equation by 3 and add that to the second, then you will eliminate y. The third equation already has y eliminated, so you will then have two equations in x and z.
3(2x -y +z) +(x +3y -z) = 3(-2) +(10)
6x -3y +3z +x +3y -z = -6 +10
7x +2z = 4 . . . . [eq4]
Subtracting the third equation from this eliminates z, so you have ...
(7x +2z) -(x +2z) = (4) -(-8)
6x = 12
x = 2
Substituting into the third equation gives ...
2 +2z = -8
2z = -10
z = -5
Then using the first equation, you have ...
y = 2x +z +2 = 2(2) +(-5) +2 = 1
(x, y, z) = (2, 1, -5)
There are 13 guests at Morgan's party. If each guest will be served exactly \tfrac{4}{5} 5 4 pint of ice cream, how many pints of ice cream will she need? Express your answer in simplest form.
Multiply number pf people by amount they are having:
13 people x 4/5 pint = (13 x 4)/5 = 52/5 = 10 2/5 pints.
They need 10 2/5 pints total. ( Simplest form)
Since you can't buy a fraction of a pint, they would actually need to buy 11 pints
The volume of 100 drops of a liquid is 0.1 fluid ounces what is the volume of 10,000 drops
Answer:
0.001 fluid oz.
Step-by-step explanation:
100 : 0.1 = 10,000 = 0.001
What would be the output (y-value) for the rule y = 4x - 5 if
you used an input of x = -2? Just write the number for your
answer.
Six lines are drawn in the coordinate plane below.
2
Which line has a negative slope?
Select all that applys
A.PR
B.SR
C.PQ
D.PS
E.QS
F.QR
Answer:
PQ
SR
PR
Step-by-step explanation:
they are all going down while the others rise
PLEASEEE HELP ILL GIVE BRAINLIEST btw there are 2 attachments so u could see all the answer choices
Answer:
1) C
Step-by-step explanation:
Step 1)
First we have to plot ↓
2x ≥ y + 2
And that looks like Image 1
Step 2)
Second we have to plot ↓
2x - 5y ≤ 10
and that looks like Image 2
The kindergarten section of Lost Valley School has 12 classrooms. If each classroom
has 15 students how many total kindergarten students are at Lost Valley School?
Answer:
180
Step-by-step explanation:
12x15=180 simple
Meg is a veterinarian. She found that 10,or 33%,of the dogs she saw this week were boxers. Steve is also a veterinarian. He found that 4 of the 20 he saw this week were boxers. Does each person need to find the part, the whole, or the percent?
Please help. Line l is parallel to line m. Find the value of x.
Answer:
x = 32
Step-by-step explanation:
2x and 64° are corresponding angles and are congruent, thus
2x = 64 ( divide both sides by 2 )
x = 32
Please help me on this
Answer:
a: -1,-1
b: 2,3
c:6,7
d: 5, 7
Step-by-step explanation:
Answer:
A -1,-1
B 2,3
C 6,7
D 5,-3
Step-by-step explanation:
You have to plug in each plotted point into the formula that was given to you.
Ex - A is plotted point is (-4,-3) so you plug in (-4+3,-3+2) which will give you (-1,-1)
Consider the table for f(x) and the graph for g(x). Which statement is true when comparing the y-intercepts of the functions?
A) The y-intercept for f(x) is greater than the y-intercept for g(x).
B) The y-intercept for both functions is (0,0).
C) The y-intercept for g(x) is greater than the y-intercept for f(x)
D) The y-intercept for both functions is (0, 2).
Answer:
Should be C
Step-by-step explanation:
The y-intercept for f(x) is greater than the y-intercept for g(x). Therefore, option A is the correct answer.
What is a y-intercept?In Maths, an intercept is a point on the y-axis, through which the slope of the line passes. It is the y-coordinate of a point where a straight line or a curve intersects the y-axis. This is represented when we write the equation for a line, y = mx+c, where m is slope and c is the y-intercept.
From the table, we have the coordinates (-2, 0) and (-1, 1).
Here, slope (m)=(1-0)/(-1+2)
m=1
Substitute m=1 and (x, y)=(-2, 0) in y=mx+c, we get
0=1(-2)+c
c=2
From the graph y-intercept is c=1
Therefore, option A is the correct answer.
To learn more about the y-intercept visit:
brainly.com/question/14180189.
#SPJ2
Complete the explicit formula for the sequence.
42, 47, 52, 57, 62, ...
Answer:
Step-by-step explanation:
67,72..
Need these proofs solved ASAP 45 pts I will give brainliest
Answer:
Step-by-step explanation:
im not sure buddy
geo quiz!! don’t understand at all
A popumation of bacteria quadruples (x4) every hour, the initial population is 30.
A.) Find the population at the end of seven hours.
B.) After how many hours will the population equal 7,864,320?
Pls help ;-;
Which number line shows all the values of x that make the inequality
-3x + 1 < 7 true?
Answer:
C
Step-by-step explanation:
A closed circle means inclusive, and -2 is included in values that would make the equation true. Then you just have to test another number greater than and less than -2 to see which way the arrow should point.
-3(-3) + 1 < 7
9 + 1 < 7
10 < 7 FALSE
-3(0) + 1 < 7
1 < 7 TRUE
All values (including -2) will make this equation true
Question:
Which number line shows all the values of x that make the inequality
-2x - 7 ≥ 13 true?