Use elimination to solve and match each system of equations to the correct solution 5x=15-5y
8y+26=2r Brainliest to the first answer I get
Answer:
40x=120
10r=130
Step-by-step explanation:
8(5x=15-5y)= 40x=120-40y
5(8y+26=2r)= 40y+130=10r
40x=120-40y
10r=130+40y
40x=120
10r=130
This is as far as I could get because the two numbers have two different variables, I couldn't subtract or add. It would be like subtracting apples from oranges... you can't
[tex]\begin{cases}5x=15-5y\\ 8y+26=2x\end{cases}\\\\\begin{cases}5x+5y=15\\ -2x+8y=-26\end{cases}\\\\\begin{cases}(5x+5y)\cdot2=15\cdot2\\ (-2x+8y)\cdot5=-26\cdot5\end{cases}[/tex]
+ [tex]\begin{cases}10x+10y=30\\ -10x+40y=-130\end{cases}[/tex] (adding first equation to second)
[tex]\begin{cases}10x+10y=30\\{}\qquad50y=-100\end{cases}\\\\\begin{cases}10x+10y=30\\{}\qquad y=-2\end{cases}\\\\\begin{cases}10x+10(-2)=30\\y=-2\end{cases}\\\\ \begin{cases}10x-20=30\\y=-2\end{cases}\\\\ \begin{cases}10x=50\\y=-2\end{cases}\\\\ \begin{cases}x=5\\y=-2\end{cases}[/tex]
is something with/without a decimal greater?
Answer:
without
Step-by-step explanation:
Anything without a decimal is greater than something that does.
Answer:
without
Step-by-step explanation:
If it has no decimal, it is greater than a number with a decimal. The answer is without.
Aaron puts $1,000 in an account that pays 10% interest compounded quarterly. He leaves it in the account for six months. Estimate how much interest he earns.
Answer: $50.63 --- Interest
Step-by-step explanation:
Step 1
Using the formulae
A = P(1 + r/n)^nt
Where
A = principal + interest Amount
P = Principal Amount = $1000
t = Time in years= 6months = 0.5 years
n = number of compounding periods= quarterly =4
Step 2
6 months = 6/12 = 0.5 years
Rate = 10 % = 0.1
A = P(1 + r/n)^nt
= 1000 ( 1 + 0.1/4)^(4 x 0.5)
=1000(1 +0.025)^2
= 1000(1.025)^2
= 1000 x 1.050625
A= $1,050.625
but A = principal + interest Amount
Interest = A- Principal=$1,050.625-$1,000
=$50.625
Which point is a solution of
y = 3x+4 ?
O (1,5)
O (2, 10)
If ST=SV=90, TU=7x, and UV=x+84, what is the value of x?
Which situation can be represented by the equation x + 15 = 42?
Every bunch of bananas on a shelf has 15 bananas. If there are
42 bunches, how many bananas are on the shelf?
A gardener plants 42 plants in every row. The gardener planted
15 rows. How many plants have been planted?
Jim receives $15 for a barrel of glass bottles he collects for recycling.
If Jim received $42, how many barrels of glass bottles did Jim recycle?
If a grocer adds 15 pieces of fruit to a basket, there are now 42 pieces
in the basket. How many pieces of fruit were already in the basket?
Answer:
The last answer - If a grocery adds 15 pieces of fruit to a basket, there are now 42 pieces on the basket. How many pieces of fruit were already in the basket?
Help me PLEASE thank you
Answer:
top question is the 4th choice.
Step-by-step explanation:
What’s 12 away from -6 on a number line?
Answer:
-18
Step-by-step explanation:
you add 12 and six together and you get 18. Then you put a negative sign in front of it
Help mehhhhh. ❗️The number of tickets sold on Friday at a movie theater was 2,000 more than the number of tickets sold on Tuesday. 1,250 tickets were sold on Tuesday. Which integer represents the number of tickets sold on Friday?
Answer:
3,250
Step-by-step explanation:
1,250 + 2,000 = 3,250I hope this helps!
Answer:
The integer number is
3,250
Step-by-step explanation:
Tuesday ticket solds : 1,250
Friday ticket solds = 2000 + 1250 = 3250
Y=Mx+B what would m be
Which of the following is not a number set that contains the number 0? A. rational numbers B. irrational numbers C. whole numbers D. integers
Answer:
irrational numbers
Step-by-step explanation:
irrational numbers is the correct and right answer
Julio is paid 1.4 times hiş normal hourly rate for each hour he works over 30 hours in a week. Last week he worked 35 hours and earned $436.60. Write and solve an equation to find Julio's normal hourly rate, r. Explain how you know that your answer is reasonable. *
Answer:
Julio is paid 1.4 times his normal hourly rate for every excess hour he works in a week.
last week he worked 35 hours and got 436.60 dollars.
We need to find an equation so we can be able to solve Julio’s earnings:
=> Let X be the value of Julio’s rate
=> 30 * X + 5 x 1.4x = 436.6
=> 30x + 7x = 436.6
=> 37x = 436.6
=> 37x / 37 = 436.6 / 37
=> x = 11.8
Thus the original rate of Julio is 11.8 dollars
=> 1.4 x 11.8 = 16.52 dollars, the rate of Julio with added rate
=> 30 x 11.8 + 5 x 16.52
=> 354 + 82.6
=> 436.6
Step-by-step explanation:
which functions have Domains that are all Real numbers?
are there any answers you can choose from
Sonya is checking orders at the fabric store where she works. Some of the orders are in decimal and some are in fractions. Which of the following statements is not true?
Answer:
B is not true
Step-by-step explanation:
Inductive reasoning is based on
definitions.
facts.
patterns.
rules.
Answer:
patterns
Step-by-step explanation:
inductive reasoning is using past experiences to deduce future outcomes
Expand each expressions and combine like terms if possible
-12(5/6x - 5) + 2x
Answer:
The answer is
60 - 8xStep-by-step explanation:
[tex] - 12( \frac{5}{6} x - 5) + 2x[/tex]
Using FOIL multiply the terms in the bracket
That's
[tex] - 12( \frac{5}{6} x) + 12(5) + 2x \\ \rarr \: \: - 10x + 60 + 2x[/tex]
Group like terms
That's
[tex]60 + 2x - 10x[/tex]
We have the final answer as
60 - 8xHope this helps you
In 1979, zoologists estimated the number of fish in a local pond to be about
540. In 1989, 10 years later, the zoologists estimated that the number of
fish had increased to 990. Assuming that the fish population increased
linearly, how many fish lived in the pond in 1986? *
ann
Answer:
693 fish
Step-by-step explanation:
In 10 years, we can tell that the amount of fish increased by 1.833...(990 divided by 540) times. If we divide 1.833... by 10, we can find how much the pond increases by yearly. we get 0.1833... If we multiply that by 7 (because the gap between 1986 and 1979 is 7 years), we get 1.2833... So, if we multiply 540 by 1.28333..., we get 693 fish.
9(18) using disributive property.
Answer:
162
Step-by-step explanation:
9 * 18 = 162
Answer:
162
Step-by-step explanation:
Which charts or graphs always use axes both labeled with quantitative values and show individual points of data, meaning that each point matches with one value on the x-axis and one value on the y-axis? Check all that apply.
histograms
scatterplots
line graphs
pie graphs
bar graphs
frequency distributions
The correct choices would be scatter plots, line graphs, bar graphs option second, third, and fifth are correct.
What is scatter plot?Scatter plots are graphs that represent individual points of data and are labeled with quantitative values on both the co-ordinate axes, meaning that there is only one projection on the x-axis and one projection on the y-axis for each point.
We have:
The chart or graph always use axes both labeled with quantitative values and show individual points of data.
Each point matches with one value on the x-axis and one value on the y-axis.
The chart or graph would be scatter plots, line graphs, bar graphs.
Thus, the correct choices would be scatter plots, line graphs, bar graphs.
Learn more about the scatter plot here:
https://brainly.com/question/13984412
#SPJ1
Answer:I belive it is b and c
Step-by-step explanation:
I might be brain dead but can you help me and tell me how to solve this if I don’t have measurements?
Answer:
102 degrees
Step-by-step explanation:
Supplement means when both angles are added together they would equal 180. So,
78 + Angle 6 = 180
Angle 6 = 102
Explain why the graph of the equation g(x)=-(x+1)^2-3 would be a parabola opening downward.
The parabola opens downwards since a=____ and this value is _____ 0.
The choices for the second blank question are:
-less than
-greater than
-equal to
g(x) = -(x + 1)^2 - 3
Let's simplify this equation
g(x) = -(x^2 + 2x + 1) - 3
Distribute the negative sign
g(x) = -x^2 - 2x + 1 - 3
Combine like terms
g(x) = -x^2 - 2x - 2
The value of a = -2 and this value is LESS THAN 0
Least to greatest PLEASE IM STRUGGLING AS IS WITH THE COMPUTER
Answer
Least to Greatest order by options: 3, 2, 4, 1
Step-by-step explanation:
Option 3 is 1/2 therefor its 0.5
Option 2 is 4.4
Option 4 is 10
Option 1 is 13.14
And that's put in least to greatest order.
Write the equation g(x) of the transformation of the parent graph f(x) = |x| translated right 5 units.
Answer:
g(x) = |x-5|
Step-by-step explanation:
f(x) = |x|
y = f(x + C) C < 0 moves it right
g(x) = |x-5| moves it to the right 5 units
We start off with: f(x) = |x|
c < 0 means move right
y = f(x + c)
Move 5 units to the right
After: g(x) = |x - 5|
Best of Luck!
Please answer step by step 8y-9y=
Mark's computer has 24 GB of total storage space. A gigabyte (GB) of computer storage space is 230 bytes. How many bytes of total storage space does the computer have? Express the total number of bytes in exponential form.
Answer:
240gb
Step-by-step explanation:
What is the square root of 586
plz help.will give brainliest
Answer:
x+2 x+2 x+2
Step-by-step explanation:
reflect point R(6,10 ) over the y-axis. The coordinates for R' are
Answer: (6,-10)
Step-by-step explanation:
When you reflect a point over the y-axis, the sign of the number changes. It goes from negative to positive and positive to negative. Since both our numbers are positive, only the y-coordinate become negative because it is only being reflected over the y-axis, not x-axis. (6,-10)
How many miles per hour is 1 mile per minute
Sally is having a party and she has invited nine of her friends.
She is going to make a special non-alcoholic fruit punch for them all
to drink. Sally wants to make enough fruit punch for herself
and all her friends to have one glass each.
Sallys Fruit Punch Recipe.
The recipe below makes enough
fruit punch for 1 person.
1/2 lime
1/2 lemon
100ml pineapple juice 200ml lemonade 100ml orange juice
1) How much of each ingredient will she need?
Limes
Lemons Pineapple juice Lemonade Orange juice
Cost of ingredients:
Pineapple Juice
Lemons 50 each
Limes 40c each
Lemonade (2 liter bottle) $1.60
Orange juice (1 liter carton) 80c
Pineapoe juice (1 liter carton) 90c
Answer:
1) 5 limes, 5 lemons, 1,000 mL of pineapple juice, 2,000 mL of lemonade, 1,000 of orange juice
2) Limes = $2, Lemons = $2.5, Lemonade = $1.60, Orange Juice = 80c, Pineapple Juice = 90c
Step-by-step explanation:
1/2 limes · 10 = 5
1/2 lemons · 10 = 5
100 mL of pineapple juice · 10 = 1,000 mL
200 mL of lemonade · 10 = 2,000 mL
100 mL of orange juice · 10 = 1,000 mL
Cost:
5 limes · 0.4 = $2
5 lemons · 0.5 = $2.5
mL to L
1,000 mL of pineapple juice = 1 L, this costs 90¢
2,000 mL of lemonade = 2 L, this costs $1.60
1,000 mL of orange juice = 1 L, this costs 80¢
Overall:
5 limes for $2
5 lemons for $2.5
1 L of of pineapple juice for 90¢
2 L of lemonade for $1.60
1 L of orange juice for 80¢