Answer:
x=2, z=4, y=-6
Step-by-step explanation:
Add
-9x-y+2z= -4
-6x+y+5z= 2
-9x-6x is -15x
-y+y is 0
2z+5z is 7z
-4+2 is -2
So the equation now looks like this: -15x+7z=-2
Subtract
-6x+y+5z= 2
-4x+y+5z= 6
So the equation will look like this:
-6x+y+5z= 2
-(-4x+y+5z= 6)
-6x+4x is -2x
y-y is 0
5z-5z is 0
2-6 is -4
So the equation now looks like this: -2x=-4
You can find x by dividing -2 on both sides:
x=2
So 2 is x
Now you can substitute x into 2
-15(2)+7z=-2
-30+7z=-2
7z=28
Divide 7 on both sides:
z=4
So now you can substitute z into 4 (For any of the three equation)
-4(2)+y+5(4)=6
-8+y+20=6
20 minus 8 is 12
y+12=6
Subtract 12 on both sides:
y=-6
So the answers are
x=2, z=4, y=-6
Hope this helps!
Which sign makes this number sentence true?
|-56| __ |56|
A. >
B. <
C. =
D. x
William has a lemonade stand. Today he made $89.62 in lemonade sales and one third that amount in cookie sales. How much money did William make altogether?
Answer:
$119.49 (rounded to the nearest cent.)
Answer: 119.4933333 would be the actual answer but rounded to the nearest cent it would be 119.49
89.62/3 = 29.8733333....... 89.62 + 29.8733333 = 119.4933333
which of the following expressions to 36x + 24y? choose all that apply.
6x (6+4y)
6(6x + 4y)
12(36x + 24y)
12(3x + 2y)
4y(9x + 6)
4(9x + 6y)
6(6x + 4y)
12(3x + 2y)
4(9x + 6y)
CAN Someone PLS HELP ME PLSSSSSSSSSSSS
Answer: where is the rest of the problem
Step-by-step explanation:
-$107.85
The probability that record drawn randomly from a standard deck of 52 cards is a four
Answer:
1/13
Step-by-step explanation:
no.of sample space n(S) = 52
no.of favourable cases n(E) = 4
probability of getting a four p(E) = n(E) / n(s)
or, 4/52
or 2/26
or 1/13
therefore,the probability of getting a four is 1/13.
A 125 mililiter solution of fabric dye contains 5 ml of hydrogen peroxide what percent concentration of hydrogen peroxide?
math read please IMA WRITE USELESS WORDS CONTINUE
I really need assistance with this question
Answer:
first
Step-by-step explanation:
Lumen
Managerial Accounting
Chapter 5: Cost Behavior and Cost-Volume-Profit Analysis
5.6 Break – Even Point for a single product
Finding the break-even point
A company breaks even for a given period when sales revenue and costs charged to that period are equal. Thus, the break-even point is that level of operations at which a company realizes no net income or loss.
A company may express a break-even point in dollars of sales revenue or number of units produced or sold. No matter how a company expresses its break-even point, it is still the point of zero income or loss. To illustrate the calculation of a break-even point watch the following video and then we will work with the previous company, Video Productions.
Before we can begin, we need two things from the previous page: Contribution Margin per unit and Contribution Margin RATIO. These formulas are:
Contribution Margin per unit = Sales Price – Variable Cost per Unit
Contribution Margin Ratio = Contribution margin (Sales – Variable Cost)
Sales
Break-even in units
Recall that Video Productions produces DVDs selling for $20 per unit. Fixed costs
please help algebra ii!
Answer:-4
Step-by-step explanation:we can easily see it on the graph
Veggie’s Market sells 5 avocados for $2.30 and 3 tomatoes for $2.97. Martina buys 2 avocados and 1 tomato. What is the total cost of her veggies?
Answer:
$1.91
Step-by-step explanation:
$2.30 / 5 = $0.46
$2.97 / 3 = $0.99
2 * $0.46 + $0.99 = $1.91
Answer:
1.91
Step-by-step explanation:
divide 2.30 by 5 and u get 0.47 and she bought 2 avocados so 0.47 plus 0.47 is 0.92 and 2.97 divided by 3 is 0.99 so 0.99 plus 0.92 is 1.91 dollars
Factor 28x3 + 156x2 + 80x
Answer:
4(+5)(7+4)
Step-by-step explanation:
i think this is real
write an equation of the line passing through the point( 3, -1) and parallel to the line y=2/3 x-5
Answer:
[tex]y = \frac{2}{3} x - 2[/tex]
Step-by-step explanation:
find The y-intercept
[tex] - 1 = \frac{2}{3} (3) + b \\ - 1 = 1 + b \\ b = - 2 \: \: \: \: y - intercept[/tex]
The equation of the line
[tex]y = \frac{2}{3} x - 2[/tex]
3. Starting from the camp at C, Tim takes a bearing of a mountain and notes it to be 25°. He then walks 5 km to the hut at H and takes a second bearing, 345°
(a) Work out the angles in the triangle. Show it is a right angled triangle.
(b) From the mountain at M, what is the bearing of the camp?
(c) How far is it from the camp to the mountain?
(d) Tim walks back to camp from the hut. What bearing does he follow?
Answer:
No idea
Step-by-step explanation:
Leon and Thomas have the same number of cherries. Leon eats 5 of his cherries and has 12 cherries left. Thomas eats 9 of his cherries. How many cherries does Thomas have left?
A number n is increased by 40% and then decreased by 14%. What is the final result in terms of n?
Answer:
X = 100. A 40% increase causes it to increase to 140. A 40% reduction amounts to multiplying by 0.6, leading to a reduction of 40% of 140 ...
Simplify by using the product, quotient, and power rules
Answer:
3y^5
Step-by-step explanation:
What is the average distance covered in meters?
Answer:
4.17666666666666666667
Step-by-step explanation:
add 4.5 4.21 and 3.82 then divide it by 3
PLEASE HELP ITS MATH THANK YOUUUU
What do you call 7 in this division problem?
28 = 7 = 4
O A. Dividend
B. Divisor
C. Quotient
D. Product
SUBMIT
Plz help I need help plz
I NEED HELP PLS.......
(10pts) Ivan bought three games and paid $65 for all three. The second game was 50% more expensive than the first one. The price of the third game was 50% of the price of the second game. Find the price of the first game.
PLSSSSSSSS HELPPPP NOWWWWWW!!!
Answer:
The price of the first game is $.
We are required to find the price of the first game
The price of the first game is $20
Given:
let
price of the first game = x
price of the second game = x + 50% of x
= x + 0.5x
= 1.5x
Price of the third game = 50% of 1.5x
= 0.5 × 1.5x
= 0.75x
Total cost of game = $65
Total cost of game = price of the first game + price of the second game + Price of the third game
65 = x + 1.5x + 0.75x
65 = 3.25x
divide both sides by 3.25
x = 65 ÷ 3.25
x = 20
Therefore, the price of the first game is $20
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Simplify the following:
[tex]\sqrt{50} x^{2} y^{3}[/tex]
Answer:
5xy[tex]\sqrt{2y}[/tex]
Step-by-step explanation:
Answer: simplify
5√2x² y²
MATH WEEK 5 DISCUSSION
Exits on an interstate are numbered consecutively.
The distance between Exit 5 and Exit 6 is 3.2 miles.
The distance between Exit 6 and Exit 7 is 1.1 miles farther than the distance between Exit 5 and Exit
6.
The distance between Exit 6 and Exit 8 is 2.4 miles farther than the distance between Exit 5 and Exit
7.
The distance between Exit 7 and Exit 8 is
miles.
9514 1404 393
Answer:
5.6 miles
Step-by-step explanation:
Let the following distances between exits be defined:
a = exit 5 to 6
b = exit 6 to 7
c = exit 7 to 8
Then the given relations are ...
a = 3.2
b = 1.1 +a = 4.3
(b +c) = 2.4 +(a +b) ⇒ c = a +2.4 = 5.6
The distance between exits 7 and 8 is 5.6 miles.
Solve for the variable
9b+4−8b=7
b = ?
Jeffrey makes 3% commission on
his sales. If his sales total $1800
this week, how much money will he
make?
Answer:
He will make $54
STATE THE MODULES THAT ARE INCLUDED WHEN LEARNING CALCULUS I.
Answer:
Calculus is the branch of mathematics studying the rate of change of quantities (which can be interpreted as slopes of curves) and the length, area, and volume of objects. The chain rule is a formula for the derivative of the composition of two functions in terms of their derivatives.
Choose the 3 correct answers please! ( Branliest )
Answer:
Option A,B,E are equivalent.
Step-by-step explanation:
What we are given: Expression
To find : Which expressions are equivalent to given expression ?
Solution :
We solve the expression and check,
A) Yes it is equivalent.
B) Yes it is equivalent.
C) No it is not equivalent.
D) No it is not equivalent.
E) Yes it is equivalent.
Therefore, Option A,B,E are equivalent.
Step-by-step explanation:
Hope this Helps =)
Answer:
A , C , EStep-by-step explanation:
Answer A :[tex] - 30(3 + 2w) \\ - 30(3) - 30(2w)\\ - 90 - 60w[/tex]
It's equivalent. ✔️
Answer B :[tex]( - 9 - 6w) - 10 \\ - 9 - 6w - 10 \\ - 19 - 6w[/tex]
It's not equivalent. ✖️
Answer C :[tex] - 3(30 - 20w) \\ - 3(30) -3(20w) \\ - 90 - 60w \\ [/tex]
It's equivalent. ✔️
Answer D :[tex](6 + 4w) \times 15 \\ 15(6)+ 15(4w) \\ 90 + 60w \\ [/tex]
It's not equivalent. ✖️
Answer E :[tex] - 20(4.5 + 3w) \\ -20(4.5) -20(3w) \\ - 90 - 60w \\ [/tex]
It's equivalent. ✔️
The width of a rectangular rug is 4 1/4 inches longer than twice its length. If the perimeter of the rug is 56 1/2 inches, which equation represents this situation?
The question requires calculating the perimeter of the rectangular r ug
The equation which represent the situation is 113/2 = 6x + 34/4 and length is 8 inches and width is 20 1/4 inches
Given:
let
length of the rectangular r ug = x inches
Width of a rectangular r ug = (2x + 4 1/4) inches
Perimeter of the r ug = 56 1/2 inches
Perimeter of the r ug = 2(length + width)
56 1/2 = 2{x + (2x + 4 1/4)
113/2 = 2(x + 2x + 17/4)
113/2 = 2(3x + 17/4)
113/2 = 6x + 34/4
113/2 - 34/4 = 6x
(226-34) / 4 = 6x
192/4 = 6x
48 = 6x
divide both sides by 6
x = 48/6
x = 8 inches
So,
length of the rectangular r ug = x inches
= 8 inches
Width of a rectangular r ug = (2x + 4 1/4) inches
= 2(8) + 4 1/4
= 16 + 4 1/4
= 20 1/4 inches
Therefore, the equation which represent the situation is 113/2 = 6x + 34/4 and length is 8 inches and width is 20 1/4 inches
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