Answer:
8r.
Step-by-step explanation:
If we substitute 3 into all of these equations, we get
8(3) which equals 24
6(3) which equals 18
9(3) which equals 27
7(3) which equals 21
8r is the one that equals 24 when 3 is substituted.
6. What is the value of x in the solution to the systems of linear equations shown below?
2x - 2y+z=3
5y-z= -31
x+ 3y + 2z = -21
Step-by-step explanation:
[tex]1) \: \: 2x - 2y + z = 3 \\ 2x = 3 + 2y - z \\ x = \frac{3 + 2y - z}{2} \\ \\ 2) \: \: \: not \: any \: \: \: x \: \: \: available \: \: \\ \\ 3) \: \: x + 3y + 2z = - 21 \\ x = - 21 - 3y - 2z[/tex]
Answer:
x= -5
Step-by-step explanation:
5y-z= -31, add z and 31 to both sides
5y+31 = z, substitute z in the other two given equations
2x - 2y+z=3
2x-2y +5y+31 = 3, combine like terms and subtract 31 from both sides
2x+3y = -28
x+ 3y + 2z = -21
x+3y +2(5y+31) = -21, distribute 2 over the addition parenthesis
x+3y +10y+62 = -21, combine like terms and subtract 62 from both sides
x+13y = -83
Now we have 2 equations with 2 variables x and y to solve
2x+3y = -28
x+13y = -83
Because we need to find x then from the first equation we can write that
3y = -2x-28, subtract 2x from both sides and the divide both sides by 3
y = (-2x-28)/3, substitute this in the second equation
x + [13(-2x-28)/3] = -83 , distribute 13 . over the subtraction parenthesis
(3x/3)+[(-26x - 364) /3= -83, find the common denominator
3x+[(-26x - 364) = -83*3 , cross multiply
3x -26x = -249 +364, add 364 to both sides
- 23x = 115, divide both sides by (-23)
x= -5
What is the y-intercept of the graph below.
The y-intercept is 0, as that is where the line go thorugh the y-axis line.
the star bakery they made 112 loaves of bread on monday. on tuesday they made twice as much as they made monday. how many loaves of bread did they make tuesday. answer
Answer:
224
Step-by-step explanation:
112 x 2 = 224
si a+b = 40; ab= 40 calcula a2 + b2
a² + b² = 1,520
Step-by-step explanation:
a + b = 40ab = 40a² + b²
= (a + b)² - 2ab
= 40² - 2(40)
= 1,600 - 80
= 1,520
Just tell me which one it is because I am confused please help me
Answer:
[tex]d \: is \: correct[/tex]
Answer:
a. y = -2x-5
Step-by-step explanation:
*Don't get confused the y-axis scale is 2
I guess you would kind of have to guess by looking at the graph for this one, the y-intercept is 5.
The graph is negative because it is pointing the opposite way
The slope is 2 because the y-axis has a scale of 2
With these facts you can formulate that the equation would be y = -2x-5
What kind of fraction is 14/6
Yes, It is an improper fraction
Please help me ASAP!!!!!
Answer:
c and b
Step-by-step explanation:
behdjdurjnrnrjdjdjdi
PLEASE HELP ITS MATH THANK YOUUUU
Answer:
2 millimeters
Step-by-step explanation:
Since that 1 millimeter is 10 meters then 20 meters which is twice will be 2 millimeters. :)
13) Store A and Store B both sell apples by the pound. Store A uses the function y = 0.38x,
where y represents the total cost in dollars and x represents the number of pounds. The
relationship between weight and cost at Store B is shown in the table. At which store
are apples more expensive?
50 Points NEED HELP ASAP PLS AND THANK YOU
A) Store A
B) Store B
C) The cost is the same at both stores
C is the answer
Hayden has 7 shells . Elly has 5 fewer shells than Hayden . Beth has 2 shells . How many shells do they have in all?
Answer:
11 i think
Step-by-step explanation:
PLEASE HELP!!! WILL GIVE BRAINLIEST!!!!!
will give branliest to right answer
Answer:
i think it is b
Step-by-step explanation:
Someone please HELP!!!
I’ll make it brainliest
Answer:
Step-by-step explanation:
Question 1) Take each point and move down two units. For example: Take point A, keeping it on the vertical line, and count two squares down, then place a new point there and call it A1. Do the same for each point in the parallelogram. Question 2) Take one point from parallelogram EFGH and move it two squares to the left. Then from that new point, count four squares down and place a new dot there. Do this for every point in the EFGH parallelogram. Question 3) This one is a bit trickier. Ok, so we know three points on the graph. L(-5, -5), M(-5, -2), and N(-2, -2). Ok so we know that if we plot these points, they will make three points in a square. All we need is the fourth point. To get that, we have to place all three points on the graph. Let's start with L. The coordinates are (-5, -5). Now, the first number is -5 which means to go 5 points to the left from the center point, then the next number is -5 again, so that means that from that point that we just made, you go 5 points down, and then that is your point L. Now, for point M, it is the same thing except for the second number, it tells us to go -2. So, instead of going 5 down like the first point, you must go 2 points down after you have to the left 5 points. REMEMBER: when plotting points, you always have o start in the center point(center of the graph). Negative numbers are always left and down. Positive numbers are always right and up. Do the same thing for point N (left 2, and then 2 down). After you have plotted all three of these points, you can see that there is one point missing. The point that we are missing is (-2, -5) (2 to the left, and 5 down).Question 4) Ok, so what you want to do is first plot your points. X(2, 1): start at center point and go 2 points to the right and one point up. Y(4,4): from center point, o 4 points to the right and the 4 points up. Z(5,2): from center point, go 5 points to the right then 2 points up. Now, connect your dots and it should make a triangle. Now for the tricky part. They want us to move our triangle 4 points down. So, start with letter Y and simply count 4 points down from its original point and place the new dot there. The new coordinates to this new Y point should be: (4, 0) (4 to the right of the center point and 0 up or down) So, this point should be on the line. The reason it is still 4 to the right is because all we did was move the point down and not left or right. DO this with the other two points and you should get: X(2, -3) (2 to the right and 3 down from center point) and Z(5, 2) (5 to the right and 2 down from center point)Question 5) THE FIRST NUMBER IS ALWAS THE NUMBER ON THE HORIZONTAL LINE.I. the point is is moved 4 to the right of the center point and 2 down. So it is (4, -2)
P. This point is moved negative 4 (to the left) and down 3 . So it is: (-4, -3)
G. This point is moved 5 to the right and then up 2 which makes it (5, 2)
Q. This point is moved 6 to the right and 4 down which makes it (6, -4)
R. This point is moved 2 to the left and 2 up which makes it (-2, 2)
S. (6, 4)
J. (-2, -4)
U. (-5, 0)
H. (3, -1)
K. (-6, -5)
Is this correct now?
What is the slope of A line parallel to the line whose equation is 6x+9y=216
9•(c + 3) = 9•c +9•3
Choose the property of real numbers that justifies the equation
Answer: Distributive Law
Amelia's garden is 7 feet long and 8 feet wide. What is the area of Amelia's garden?
Answer:
10 feet long each because 8 × .25 is 2 and 8 + 2 is 10
Step-by-step explanation:
Brainliest?
f(x) = x² + 2ax + a² - a
g(x) = 4 - x²
Let variable a be a real number. Find the range of values of a such that the equation f(x) = g(x) has two different solutions.
***The answer should be -2 < a < 4, but I don't know why.
Step-by-step explanation:
f(x) = x² + 2ax + a² - a
g(x) = 4 - x²
f(x) = g(x)
x² + 2ax + a² - a = 4 - x²
2x²+2ax+a²-a -4 =0
the equation has two different solutions
=> (2a)² - 4(2)(a²-a-4) > 0
4a²-8a²+8a +32 >0
-4a²+8a+32 > 0
a²-2a-8 >0
(a-4)(a+2) < 0
the answer should be
-2 < a < 4
Walmart sells a 40-ounce jar of peanut butter for $5.58
What is the Unit Price?
Examine the Federal Tax Table for married couples filing joint returns.
Married Couples Filing Jointly
If Taxable Income Is between: Then the Tax Due Is:
$0 – $19,400 10% of taxable income
$19,401 – $78,950 $1940+12% of the amount over $19,400
$78,951 – $168,400 $9086+22% of the amount over $78,950
$168,401 – $321,450 $28,765+24% of the amount over $168,400
$321,451 – $408,200 $65,497+32% of the amount over $321,450
$408,201 – $612,350 $93,257+35% of the amount over $408,200
$612,351+ $164,709.50+37% of the amount over $612,350
Sally and her husband, Ahmed, together earned a total of $203,300 in taxable income last year. Using the tax table, what do they owe in federal income taxes? Enter your answer rounded to the nearest dollar, such as: $42,536
Answer:
$37,141
Step-by-step explanation:
The applicable line of the tax table is ...
$28,765+24% of the amount over $168,400
If A represents the amount of taxable income, this simplifies to ...
$28,765 +0.24(A - 168,400) = $28,765 +0.24A -40416 = 0.24A -$11,651
For their income of 203,300, Sally and Ahmed owe ...
0.24×203300 -11651 = 48792 -11651 = 37141
They owe $37,141.
1/5(x + 0.5) + 5.24 = 3/2x + 7/10(x + 2.2)
Solve for x
Answer:
x=19/10
Step-by-step explanation:
abcdefghijklmnopqrstuvwxyz
someone help i’ll mark brainliest!!! Find the equation of the line through (7,1)
that has a slope of 1/2
Express your answer in General (Standard) Form.
Answer:
y=1/2x - 2.5
Step-by-step explanation:
Answer:
Step-by-step explanation:
We can use the point-slope formula to write an equation for this line. The point-slope formula states :
where m is the slope and (x1 y1) is a point the line passes through .
We can substitute the slope and values from the point to give:
(y-1) = 8 (x-7)
We can also transform this equation to the slope-intercept form by solving for
y
. The slope-intercept form of a linear equation is: y=mx+b
where the m is the slope and b s the y-intercept value.
y-1= (8 times x) - ( 8 times 7)
y-1= 8x - 56
y-1 + 1= 8x- 56 + 1
y-0= 8x- 55
y= 8x - 55
Which of these u is a example
Answer:
the correct answer is C there ya go
Answer:
C. Typing 28 words in 2/3 of a min
Step-by-step explanation:
42 words : 60 secs = ? words : ? secs
42:60 16:40 / This could not be an answer because 1/3 of 42 is 14. And 16 exceeds 14. So this couldn't be a possible answer choice.
42:60 16:80 / This could not be an answer because 16 is less than 42 and the time given here is over 60 secs.
42:60 28:40 / This would be an answer because 1/3 of 42 is 14. SO if we multiplied 14 by 2 we would be 28.
42:60 28:80 / This could not be an answer because 28 is less than 42 and the time given here is over 60 secs.
help！！！！What is a value of y that makes the relation （3，5）（2，5）（9，y）a function！
Answer:
tesie nqsguirin tentndaoloe
Step-by-step explanation:
what is the psychology of a middle school student compared to a elementary compared to a high school compared to a college how does the brain change
Please help me I need to pass
Answer:
5 / 8
Step-by-step explanation:
3 / 4 = 0.75
5 / 8 = 0.625
5 / 8 is between 1 and 3 / 4.
Write the equation in standard form.
y+ 7= -3/2 (x+1)
Answer:
2y + 3x = -17
Step-by-step explanation:
standard form is Ax + By = C
first step is to distribute -3/2 among 'x' and then by 1 to get:
-3/2x - 3/2
you now have y + 7 = -3/2x - 3/2
we want to get the -3/2x term on the same side as 'y' and get 7 from the right side to the left side
we want to add 3/2x to the left side of the equation because it is being subtracted:
y + 3.2x + 7 = -3/2
now we want to subtract 7 to the right side because it is currently being added:
y + 3/2x = -7 3/2
we can convert -7 3/2 to be -17/2
we now can eliminate the denominator of 2 in the 'x' term by multiplying each term by 2 to get:
2(y + 3/2x) = -17/2(2)
distribute and simplify to get:
2y + 3x = -17
Help pleaseeeees x+1/6=3x/10
Answer:
X=1/174
Step-by-step explanation:
Answer:
x = -5/21
Step-by-step explanation:
The common denominator between all the terms in this equation is 30. Multiply everything by 30.
[x+1/6=3x/10] * 30
30x + 5 = 9x subtract 9x on both sides
21x+5 = 0 subtract 5 on both sides
21x = -5 divide 21 on both sides
x = -5/21
Please help
I will mark brainliest
Answer the questions in the picture
Thank you :)
mass=density×volume
mass=4.7(cm³)×19.3(g/cm³)=90.71 g
9) V= width × length × heightFind seven ordered pairs to the equation y=8 - x2.
NEED IT ASAP PLEASE!!!
-3 | 9-8=1 | (-3, 1)
-2 | 4-8= -4 | (-2, -4)
-1 | 1-8=-7 | (-1, -7)
0. | 0-8=-8 | (0, -8)
1 | 1-8=-7 | (1, -7)