Answer:
y = 1, x = - 8
or
(-8, 1)
Step-by-step explanation:
-x + 4y = 12
x + y = -7
add the equations together
0x + 5y = 5
5y = 5
y = 1
substitute y for 1 in one of the original equations to find x
x + y = -7
x + 1 = -7
x + 1 - 1 = - 7 - 1
x = - 7 - 1
x = -8
Answer:
y = 1, x = - 8 or (-8,1)
Step-by-step explanation:
......
a cookie recipe uses 2/3 bags of sugar Lisa is going to follow the recipe three times. Lisa will use blank bags of sugar?
Answer:
2 bags
Step-by-step explanation:
2/3 x 3 = 2
2/3, 1 1/3, 2.
She will use 2 bags of sugar.
answers ASAP plsssssss
Answer:
Step-by-step explanation:the answer is option A as 1 • 3 =3 and 3+4=7
Jocelyn was given a box of assorted chocolates for her birthday. Each night, Jocelyn treats herself to some chocolates. The number of chocolates remaining in the box tt days after Jocelyn's birthday can be modeled by the equation C= -3t+30. What is the x-intercept of the equation and what is its interpretation in the context of the problem?
9514 1404 393
Answer:
"x-intercept": t = 10the chocolates will be gone after 10 nightsStep-by-step explanation:
The "x-intercept" is the value of the independent variable (t, in this case) such that the value of the dependent variable (C) is zero. We can find it by solving the equation ...
0 = C
0 = -3t +30
0 = -t +10 . . . . . divide by 3
t = 10 . . . . . . . . . add t
The value of t is the number of days Jocelyn has been eating the chocolates. When t=10, C =0. The number of chocolates remaining in the box will be zero after 10 days.
Answer:
The x-intercept of the function is 10 which represents the number days after Jocelyn's birthday until all of the chocolates are gone.
Step-by-step explanation:
Since there were 0 chocolates remaining after 10 days, the x-intercept of 10 represents the number of days until the box of chocolates was empty.
Have a good day :)
Please help ...............
How many different states have you visited?
Answer:
Pfffft only one. I went to California
Step-by-step explanation:
Answer:
i am an alpha male so i have visited all of the states i know i know calm down ladies you all dont need to see me at one. (for legal reasons this is a joke)
Step-by-step explanation:
Can you please help me?
Answer: No
Step-by-step explanation: Because.
Is 2q - 2s + 2q equivalent to 4q - S? Why?
Answer:
yes. They both equal [20]=20
plz somebody help me asap i need help
Answer:
False, True, Falso True
Step-by-step explanation:
Slope is 3/1 or 3
Line hits (0,-5)
Rachel babysits the Michaelson’s kids on Saturdays for 4 hours and is paid $12.50 per hour. On Sundays, she babysits at the Smith’s for 4 hours and is paid $14.50 per hour.
Rachel earns $
on Saturdays and $
on Sundays. She earns $
more on Sundays than on Saturdays.
Answer:
She earns $8.00 more on Sunday
Step-by-step explanation:
Saturday 12.50x4=50.00
Sunday 14.50x4=58.00
Answer:
$50.00 on Saturdays
$50.00 on Sundays
She earns $8 more on Sundays than on Saturdays
I hope this helps
Can someone please help me with this ?!!
Answer:
I believe the answer is B
Step-by-step explanation:
find the perimeter or circumference and area of each figure and round to the nearest tenth
Answer:D hope this helps :)
1A roll of ribbon is 1,780 inches long. It takes 1 yard
of ribbon (36 inches) to wrap a gift:
How many gifts can be wrapped?
6 gifts. 6 yards of ribbon.
There were 10,000 people per two blocks in
Harlem, what is the simplified ratio of people
per block(s)?
Answer:
5,000 people per block
Step-by-step explanation:
IF there's 10,000 people per 2 blocks, all you have to do to find the amount of people in one block is to divide by 2. :) this can be represented mathematically as:
2x=10,000 - original
x=5,000 - divided to get x alone
Hope this helps!
The diagram shows three squares, P Q R S , T U V W and W X Y Z . Angles P U V and Q Y X are 62 ∘ and 74 ∘ respectively. What is angle V W X ?
Answer:
44
Step-by-step explanation:
180 - (62 + 74) = 44
I need help with this question
Answer:
120
Step-by-step explanation:
that is an isosceles triangle so all angles are equal to 60
x is supplementary with the angle that is equal to 60 meaning that the two angles added with equal 180
180-60=120 so x=120
The temperature is −18.2 Celsius in South Dakota and -9.7 Celsius Minnesota. Which one of the following inequalities correctly compares the temperatures? Choose 1 answer: Which one of the following descriptions is correct?
Answer:
A and A
Step-by-step explanation:
please mark brainliest.
Answer:
A and A
Step-by-step explanation:
I will mark you as the brainiest if you get this correct
Answer:
a is 0.49875 (but round it)
and b is 0.465
so b is a better deal
Step-by-step explanation:
Answer:
3.99$ divided by 8=0.50cents
50 cents per a battery
Step-by-step explanation:
6 batteries for 2.79 is a better buy
2.80 divided by 6 =46 cents per a batter
Which of the coordinate pairs is a point on the line y = -2/5x + 4?
A.) (2, 3)
B.) (-5, 6)
C.) (6, 2)
D.) (-2/5, 4)
Answer:
B.) (-5, 6)
Step-by-step explanation:
to solve algebraically, test the coordinate pairs in the equation [tex]y = -\frac{2}{5}x + 4[/tex]
to solve graphically, enter the equation [tex]y = -\frac{2}{5}x + 4[/tex] into a graphing calculator and graph the coordinate pairs as well to see which one is on the line.
(2, 3) is NOT a solution.
steps for solving algebraically:
first, identify the x and y values in your coordinate pair.
2 is the x-value and 3 is the y-value. coordinate pairs are always written as (x, y).plug in 2 for x in [tex]y = -\frac{2}{5}x + 4[/tex] (it doesn't matter if you plug in x or y first, i personally always start with the x-value but it really doesn't matter what order you do it in.)
y = -2/5x + 4 ⇒ y = -2/5(2) + 4now plug in 3 for y.
y = -2/5(2) + 4 ⇒ 3 = -2/5(2) + 4your equation is now 3 = -2/5(2) + 4. begin simplifying by multiplying -2/5 and 2.
3 = -2/5(2) + 4 ⇒ 3 = -0.8 + 4 (i converted my answer to a decimal because i'm better at dealing with decimals as opposed to fractions lol)now add -0.8 + 4 to simplify the rest of the right side of the equation.
3 = -0.8 + 4 ⇒ 3 = 3.23 and 3.2 are not equal, therefore (2, 3) is not a solution.
(-5, 6) IS a solution.
steps for solving algebraically:
first, identify the x and y values in your coordinate pair.
-5 is the x-value and 6 is the y-value. coordinate pairs are always written as (x, y).plug in -5 for x in [tex]y = -\frac{2}{5}x + 4[/tex] (it doesn't matter if you plug in x or y first, i personally always start with the x-value but it really doesn't matter what order you do it in.)
y = -2/5x + 4 ⇒ y = -2/5(-5) + 4now plug in 6 for y.
y = -2/5(-5) + 4 ⇒ 6 = -2/5(-5) + 4your equation is now 6 = -2/5(-5) + 4. begin simplifying by multiplying -2/5 and -5.
6 = -2/5(-5) + 4 ⇒ 6 = 2 + 4now add 2 + 4 to simplify the rest of the right side of the equation.
6 = 2 + 4 ⇒ 6 = 66 and 6 are equal, therefore (-5, 6) is a solution.
although we have identified (-5, 6) as a solution, i'm still going to check the rest of the points just to be sure! :)
(6, 2) is NOT a solution.
steps for solving algebraically:
first, identify the x and y values in your coordinate pair.
6 is the x-value and 2 is the y-value. coordinate pairs are always written as (x, y).plug in 6 for x in [tex]y = -\frac{2}{5}x + 4[/tex] (it doesn't matter if you plug in x or y first, i personally always start with the x-value but it really doesn't matter what order you do it in.)
y = -2/5x + 4 ⇒ y = -2/5(6) + 4now plug in 2 for y.
y = -2/5(2) + 4 ⇒ 2 = -2/5(2) + 4your equation is now 2 = -2/5(6) + 4. begin simplifying by multiplying -2/5 and 6.
2 = -2/5(6) + 4 ⇒ 2 = -2.4 + 4 (i converted my answer to a decimal because i'm better at dealing with decimals as opposed to fractions lol)now add -2.4 + 4 to simplify the rest of the right side of the equation.
2 = -2.4 + 4 ⇒ 2 = 1.62 and 1.6 are not equal, therefore (6, 2) is not a solution.
(-2/5, 4) is NOT a solution.
i see that they want to trick you with this one by using the values that are in other spots in the equation... that's crafty
steps for solving algebraically:
first, identify the x and y values in your coordinate pair.
-2/5 is the x-value and 4 is the y-value. coordinate pairs are always written as (x, y).plug in -2/5 for x in [tex]y = -\frac{2}{5}x + 4[/tex] (it doesn't matter if you plug in x or y first, i personally always start with the x-value but it really doesn't matter what order you do it in.)
y = -2/5x + 4 ⇒ y = -2/5(-2/5) + 4now plug in 4 for y.
y = -2/5(-2/5) + 4 ⇒ 4 = -2/5(-2/5) + 4your equation is now 4 = -2/5(-2/5) + 4. begin simplifying by multiplying -2/5 and -2/5.
4 = -2/5(-2/5) + 4 ⇒ 4 = 0.16 + 4 (i converted my answer to a decimal because i'm better at dealing with decimals as opposed to fractions lol)now add 0.16 + 4 to simplify the rest of the right side of the equation.
4 = 0.16 + 4 ⇒ 4 = 4.164 and 4.16 are not equal, therefore (-2/5, 4) is not a solution.
as for finding the solution on a graph, enter the equation for the line as well as the coordinate pairs into a graphing calculator. here i used a handy little site called desmos in order to graph all of this. the first photo i attached contains what i entered into the calculator, and the second photo i attached shows the graph. as you can see, the only point that is actually on the line is (-5, 6), which is why (-5, 6) is a solution to [tex]y = -\frac{2}{5}x + 4[/tex] , and the other coordinate pairs are not solutions to that equation because they are not on the line.
i hope this helps! have a lovely rest of your day <3
Answer:
its D you don't even need to do all the work bc the same numbers are right there in the equation
Ill mark you brainliest please help !
Answer: (-2, 1)
Step-by-step explanation:
What are the solutions of the equation (x−9)2=64?
Answer:
17,1
Step-by-step explanation:
I just did this question on the benchmark
7 yr 27 mon 27 da + 26 mo 42 da = i need answer aszap
Answer:
11 years 7 months 7 days(if 31 days a months) and change 7 days to 9 days if assuming 30 days a moths
Please help!
Thank you!
Step-by-step explanation:
the picture is sideways but that's the answer
is this a function or not
Answer:
No, I don't think so.
Step-by-step explanation:
I don't think this is a function because the triangle is made of multiple points. Some of these points share the same x point, so this concludes that a triangle on a graph is not a function.
Hope it helps!
In the diagram, AB = AC and ∠DCE = 75°, BCD and ACE are straight lines. ∠BAC =
Again, what is the shape?
someone please help!! find the value of y in this triangle
Answer:
30
Step-by-step explanation:
Triangle containing 120° and y° is an isosceles triangle.
Therefore,
y° + 120° + y° = 180°
2y° = 180° - 120°
2y° = 60°
y° = 60°/2
y ° = 30°
y = 30
Solve the system of linear equations using Elimination
3x + y = 12
-3x+9y=48
HELP ASAP!!! Worth 20 points
Answer:
x=2
y = 6
This is the answer for above equation
Using the figure below, find x if Z2 = 14x + 58 & 27 = 10x + 66.
M
9
1/2
43
516
78
b
*Hint: Follow the steps for finding angle measurements by relationships
5
14
6
2
PLEASE ANSWER QUICK I NEED HELP
Answer:
I think c?
Step-by-step explanation:
Write a linear function that relates y to x .
y=
Answer:
y = x-2
Step-by-step explanation:
find the slope. 0,-2 and 2,0
0- -2 / 2-0 = 1
y-0 = 1(x-2)
y = x - 2
Clyde made lasagna for dinner last night and 1/3 of it was left over clyde will share the leftover lasagna equally with his brother for lunch what diagram could they use to find the fraction of the whole lasagna that each will have for lunch?
Answer:
hwlllo
Step-by-step explanation: