2. Solve the system by substitution. (1 point)
2x – y + z = -4
z = 5
-2x + 3y - 2 = -10
O(-8,7,5)
O(-8. -7,5)
O(8, -7,5)
O(-8, -7,-5)
Answers
Answer:
Answer for this one is second one (-8,-7,5)
Step-by-step explanation:
Hope it will help you :)
Related Questions
A robot can complete 7 tasks in 2/3 hour.What is the unit rate for hours per task
Answers
Answer: The robot can complete 10.5 tasks per a hour because 7 times 2/3 you do the keep change flip
Which well then equal 7 times 3/2 which will then equal 21/10 or 10 1/2 or 10.5
Step-by-step explanation
It takes 18 hours to fill a pool using 8 garden hoses. How long would it take to fill the same pool using 9 garden hoses? (Answer not 20)
Answers
Answer:
2.25 hours per hose
Step-by-step explanation:
i think you can find it from there
NEED HELP ASAP BRAINLY IF CORRECT
Answers
Answer:
25r +30j = 460
r - j = 3
Step-by-step explanation:
Let r and j represent Riley's hours and Jace's hours, respectively. The equations could be ...
25r +30j = 460
r - j = 3
__
The solution is (r, j) = (10, 7).
Write all prime numbers between 15 and 20
Answers
Answer:
17 and 19
Step-by-step explanation:
Answer:
17, 19
Step-by-step explanation:
15 is composite (5, 3) (15, 1)
16 is composite (8, 2) (4, 4) (16, 1)
17 is prime (17, 1)
18 is composite (9, 2) (6, 3) (18, 1)
19 is prime (19, 1)
20 is composite (2, 10) (4, 5) (20, 1)
David begins the summer with a savings of $54.00 more than Fatima. David’s job
pays $8.25 per hour. Fatima’s job pays $9.75. If they both work the same amount of
time each day, how many hours of work will it take David to have as much money as
Fatima? Write an inequality and then solve.
Answers
Answer:
36 hours (1 1/2 days, 351$ )
Step-by-step explanation:
create a linear system and solve.
8.25x + 54 = 9.75x
_______________
-8.25x -8.25x
_______________
54 = 1.5x
_______________
1.5 x = 54
_______________
÷ 1.5. ÷1.5
_______________
x = 36.
if you want to know how much money they will have at this time, just substitute the x value that you solved for back into the equation
x = 36 -> 8.25(x) + 54 = 9.75(x)
8.25(36) + 54 = 9.75(36)
297 + 54 = 351
351 = 351
________________________________
David's budget >= 54$
Fatima's budget >= 0$
The required inequality is 8.25x + 54 = 9.75x
It will take 36 hours for David to have as much as Fatima.
David :
Initial saving = 54
Pay per hour = $8.25
Fatima :
Pay per hour = $9.75
Let number of hours worked = x
David's total = $8.25x + 54
Fatima's total = 9.75x
In other to have the same amount :
8.25x + 54 = 9.75x
Collect like terms :
8.25x - 9.75x = - 54
-1.5x = - 54
x = - 54 / - 1.5
x = 36
Hence, it will take 36 hours for David to have as much as Fatima.
Learn more : https://brainly.com/question/13218948
Be sure to SHOW YOUR WORK!!! Tests submitted with no work will be given a ZERO!!! 1.) You are one of five people who have been hired to mow the lawn at the local college. Each week, the dimensions of the plot you are responsible to mow changes. The college conducts a lottery, and whichever number is drawn, represents the x value. Your plot has a length which is three more than seven times x and the width is four times x minus 2.
a.) What are the dimensions of your mowing plot? Length: ______________________________________ Width: ______________________________________
b.) What is the area of your plot (remember area = length x width)? Area: _________________________________________
c.) If x = 10 meters, how many square meters is your plot? (show steps)Area: _________________________________________
2.) Factor by grouping: xy− 4y + 7x − 28
Answers
Step-by-step explanation:
maybe if u add more brainly coins more ppl will come
Joana's printer can print 96 black and white pages in 4 minutes. If the ratio of pages printed to minutes is constant, how many minutes will it take the printer to print 240 pages
Answers
Answer:
10 minutes
Step-by-step explanation:
A decorator wants to line the bottom of 3 drawers with paper. If the bottom of each drawer measures 36 inches by 20 inches, how many squares inches of paper are needed?
Answers
Answer:
168 I believe
Step-by-step explanation:
Which percent is represented by the diagram below?
2 area models with 100 squares. In the first model, 100 squares are shaded. In the second model, 25 squares are shaded and 75 are unshaded.
A. 1.25%
B. 12.5%
C. 125%
D. 1250%
Answers
Answer:
It is c 125%
Step-by-step explanation:
I took the test
Answer:
C on Edge 2020
Step-by-step explanation:
Anyone who is kind to answer please
Answers
Help!!!
Solve for x and y to satisfy both equations in the system:
{6x+y=252x−3y=25}
Answers
Answer:
6x+y=25
2x_3y=25
2(6x+y=25
6(2x_3y=25
12x+2y=50
12x_18y=50
20y=100
y=5
6x+y=25
6x+5=25
6x=20
x=3.33
I need help! The 20% off sale is a better deal than the $200 rebate or $150 coupon for the $1,500 dining room set. Explain why this is the best deal for them. Are they under budget?
Answers
Answer:
See explanation
Step-by-step explanation:
The 20% off sale is a better deal because 20% off of $1500 will cost $1200. (See work).
However, the 200 or 150 dollars off will cost $1300-1350. Thus, the better deal for the dining room set is to use the 20% off.
If their budget is $1250, they will be $50 under budget because they would be paying $1200 for the set.
Work:
1500 x 20%
1500 x 0.20 = 300
1500-300= $1200
1500-150= 1350
1500-200= 1300
Yes, the Porters are under budget. The 20% off sale is the best deal because $1,500 times 0.20 is $300. $300 is a bigger discount than the $150 coupon and $200 rebate. $300 off $1,500 is $1,200, which is less than the amount budgeted.
John puts $300 into a savings account. He puts more money into the account each month. After 12 months he has $1500 in his savings account. At this rate, how much will he have in his savings acount after 24 months?
Answers
Answer:
7200
Step-by-step explanation:
I'm not going to explain but i will say that you should multiply 300x 24 to get you answer
Answer:
[tex]y= 100x +300[/tex]
[tex]x=[/tex] How many months
Step-by-step explanation:
In this equation a
We are solving to find after 24 months you want to plug 24 in to where X is and solve the eqaation from there.
Hope this helps!!
Can someone answer the first question ????? PLEASE HURRY ILL GIVE ALL MY POINTS
Answers
Answer:
its F
Step-by-step explanation:
Its f since when you do the reflection on a grid you will get (1,-4) No problem ;D
Which shape has a larger area: a rectangle that is 7 inches by 34 inch, or a square with a side length of 212 inches? Show your reasoning.
Answers
Answer:
Area of the rectangle = l×b
= 7×34 = 238sq.inches
Area of the square = side ²
= 212² = 44,944sq.inches
Therefore, the square has a larger area
A DVD normally costs $20. The price changes to $9.50 when it goes on sale. How much is the percent of change on the DVD
Answers
Tbh it might be 55 percent
Solve the proportion. I need to show much work so a step by step explanation would help!
Answers
Answer:
Solution: x=5
Step-by-step explanation:
Equations
This is an equation in the form of a proportion or ratio:
[tex]\displaystyle \frac{2}{x+3}=\frac{5}{4x}[/tex]
To solve it, we eliminate the denominators by multiplying by both of them.
Multiply by (x+3)(4x):
[tex]\displaystyle (x+3)(4x)\frac{2}{x+3}=(x+3)(4x)\frac{5}{4x}[/tex]
Simplify both sides:
[tex](4x)*2=(x+3)*5[/tex]
Operate:
[tex]8x=5x+15[/tex]
Simplify:
[tex]3x=15[/tex]
Solve for x:
[tex]x=15/3=5[/tex]
Solution: x=5
What is the square root of two?
Answers
Answer:
4
Step-by-step explanation:
Answer:1.41421356237
Step-by-step explanation:
· The senior class is planning an end of the year party to celebrate graduation. Their
total budget for food and drinks is $600. Each plate of food costs $5, and each drink
costs $1. Each person at the party gets one plate of food and one drink, with none
leftover. How many people went to the party?
Solve problem using systems of equations.
Answers
Answer:
100
Step-by-step explanation:
Because everyone had one plate and one drink, we can combine those individual prices.
5 + 1 = 6
Now we divide 600, the total cost, by 6, the cost for one person.
600 ÷ 6 = 100
So now we know that 100 people went to the party, as there was nothing left over.
Find the measure of each angle. Assume the lines are parallel.
Answers
Answer:
2 = 67
3 = 113
4 = 67
5 = 113
6 = 67
7 = 113
8 = 67
Step-by-step explanation:
opposite angle have to equal 180 because if you combine them they just become the line.
since the lines are parallel, measurements will be the same for the bottom set of angles as they are the top set of angles.
F (2) =
(please give an explanation i'm confused)
Answers
Answer:
I think it would be like f x2 so you would reorder the term and get 2f
Step-by-step explanation:
How much money does Alex have more than Emily? Alex has $68.00 and Emily has $-94.00
answer the correct answer!
Answers
Answer:
162
Step-by-step explanation:
Multiply (X^4+1)(3x^2+9x+2)
Answers
Answer:
whatever they said up there
yee yee
Step-by-step explanation:
you lent your cousin $25.75 and she sent you $30.00 who owes who money and how much money
Answers
Answer:
you owe her 4.28
Step-by-step explanation:
30.00-25.75= 4.28
a function can be classified as one-to-one correspondence, one-to-many correspondence and many-to-one correspondence.
Answers
Mappings can be classified as one-to-one, one-to-many, and many-to-one
A mapping of a set of domain R to another set of domain X is expressed as:
f: X→ R where:
X is the domain
R is the co-domain
For a one-to-one mapping, all the elements of the domain R must have a unique element in the co-domain RFor a one-to-many mapping, an element of the domain R must have more than one element in the co-domain RFor a many-to-many mapping, all elements of the domain R must have a unique element in the co-domain RLearn more here: https://brainly.com/question/24138383
Write a equation
The line which passes through (-3,-3) and (2, 1) point slope(ps)
Answers
Whats 2 + 6? If the 2 is really a 7?
Answers
Answer:
13
Step-by-step explanation:
7 + 6 = 13
You are trying to find the distance AB between two points on either side of a river. You
measure the following distance:
Answers
Answer:32ft
Step-by-step explanation: I missed this as well, ED and AB are the same and if you don’t read you skip over the fact ED equals 32ft. Since ED and AB equal eachother it would be 32ft
The value of AB = 32 feet
What is congruency ?Congruent shapes are shapes that are exactly the same. The corresponding sides are the same and the corresponding angles are the same.
Given:
EC= 32 ft = BC
DC= 28 ft =AC
<ECD= <BCA
So, In ΔECD and ΔBCA
EC = BC
DC= AC
<ECD= <BCA
Thus, by SAS ΔECD ≅ ΔBCA
Hence, by CPCT : ED= BA = 32 ft.
Learn more about congruency here:
https://brainly.com/question/7888063
#SPJ2
Yo yo Help a girl out LOL due today please help just need the answer <3
Answers
Answer: The answer is 19 hours
Step-by-step explanation:
Answer:
the correct answer is 19
Step-by-step explanation:
I NEED HELP RIGHT NOW!!! PLEASE!
what is the value of 5 in 0.459
Answers
Answer:
Place value= hundreds place
or, 0.05