4x + y = 4
8x + y = 5
If (x,y) is the solution of the system of equations above, what is the value of
x?
Answer:
if u substract the equations u get 4x = 1, therefore x = 1/4
Step-by-step explanation:
(8x + y) - (4x + y) = 5 - 4
4x = 1
x = 1/4
50,6291583.9741
What place value does 4 hold in the number above?
number 4 is in the thousanths place
Giving brainliest to the correct answer 20 points!!!
Answer:
x, (40,0)
y, (0,15)
hope it helps
Answer:
78
Step-by-step explanation:
hvtyvyuhj7
can someone help me
Answer:
Pretty sure that you have it right, B
Step-by-step explanation:
HI AGAIN BLUE DINO PERSON
What is the value of x?
Find the unknown angle.
The temperature was –5°C at 6:00 a.M. It increased 3 4 34 of a degree every hour for 6 hours. The temperature then increased 1 1 2 112 degrees every hour for 5 hours. What was the temperature at 5:00 p.M.?
Answer:
The temperature was;
6 °C
Step-by-step explanation:
Here, we want to know the temperature at 5 pm
For the first 6 hours, we have an increase of 3/4 degree per hour
so the temperature increase in the first 6 hours will be;
6 * 3/4 = 4.5 degrees
Then we had an increase of 1 1/2 degrees per hour for 5 hours
The increase after these 5 hours will be;
3/2 * 5 = 15/2 = 7.5 degrees
Total increase is 7.5 + 4.5 = 11 degrees
We subtract the initial -5 from here
So the present temperature will be;
-5 degree + 11 degree = 6 degrees celsius
Andres has 18 sour cherry fruit strips. He and 4 of his friends are going to share them all equally. How many fruit strips will each person get?
~PLEASE ANSWER QUICK~
Answer: 3 3/5
Explanation:
18÷4=3.6
3.6= 18/4
18/4 as a mixed number is 3 3/5
Micah sketches the graph below to represent a scenario his teacher gave him.
On a graph, a line goes through points (0, 2) and (2, 4).
Which scenario could Micah’s graph represent?
Valerie has $1 and then earns $2 per week (where x is the number of weeks) in allowance, for a total of y dollars.
Valerie has $2 and then earns $1 per week (where x is the number of weeks) in allowance, for a total of y dollars.
Valerie earns $1 per week (where x is the number of weeks) in allowance and has spent $2, for a total of y dollars.
Valerie earns $2 per week (where x is the number of weeks) in allowance and has spent $1, for a total of y dollars.
The scenario represented by the linear function y = x + 2 is given by:
Valerie has $2 and then earns $1 per week (where x is the number of weeks) in allowance, for a total of y dollars.
What is a linear function?A linear function is modeled by:
y = mx + b
In which:
m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.For this problem, we have that:
The y-intercept is of 2, as when x = 0, y = 2.The slope is of 1, as when x changes by 2, y also changes by 2, hence m = 2/2 = 1.Thus the function is given by:
y = x + 2.
Which means that the initial amount is of $2, and increases by $1 for each unit of time, hence the correct option is:
Valerie has $2 and then earns $1 per week (where x is the number of weeks) in allowance, for a total of y dollars.
More can be learned about linear functions at https://brainly.com/question/24808124
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Answer:
b
Step-by-step explanation:
A basketball player has a 60% chance of
making each free throw. What is the
probability that the player makes exactly
five out of seven free throws?
Answer:
8/10
Step-by-step explanation:
Answer:
50%
Step-by-step explanation:
Whats the answer choices
what is the base of a triangle if the height is 8 in. and the area is 28 in. squared
Answer:
the base = 7 in
Step-by-step explanation:
Answer:
Step-by-step explanation:
Area = 1/2 base * height
Area = 28
height = 8
base = ?
28 = 1/2 * 8 * base
28 = 4 * base
28/4 = base
base = 7
The expression on the left side of an equation is shown below. Negative 6 x + 6 = box If the equation has an infinite number of solutions, which expression can be written in the box on the other side of the equation? –6 1 Negative 6 x Negative 6 x + 6
Answer:
The answer is -6x + 6
Step-by-step explanation:
For us to have an infinite number of solutions, then, what we have on the right hand side will be exactly what we have on the left hand side
Since we have -6x + 6 on the left hand side
To have infinite number of solutions, what we have on the right hand side will be the same
Thus, we have -6x + 6 on the second side
Answer:
It's D
Step-by-step explanation:
I just did it on edge
William is 11 years old. One day, his granddad took him and his younger brother to a basketball game. The tickets for the game were priced at $17 for adults (`a`) and $13 for children (13 years and younger) (`c`). What is the expression for the total cost of the tickets for William’s family and what was the total cost?
Answer:
43$
Step-by-step explanation: Three tickets total.
2 tickets cost 13$ =26
1 ticket 17 = 43 total
Hope this helped! God Bless!!
The total cost of the tickets for William’s family with 1 adult and 2 children is $43.
William's age = 11 years
Price for an adult = $17
Price for a child = $13
What will be the total number of tickets be bought?The total number of tickets to be bought will be 3 i.e. William, His Granddad, and William's younger brother i.e. 1 adult ticket and 2 children tickets.
Total price = price of 1 adult ticket + price for 2 children's ticket
Total price =17+2*13
Total price =17+26
Total price =$43
Therefore, the total cost of the tickets for William’s family is $43.
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What factors does Jenna need to model for the sides?
How can you write the equation for a linear function if you know only two ordered pairs for the function?
Drag tiles to complete the explanation. Tiles may be used once, more than once, or not at all.
Answer:
Use the two ordered pairs to find the slope, m.
Then substitute one set of ordered pairs and m into y = mx + b to solve for b
Step-by-step explanation:
If we are given two ordered pairs of a function and we need to write an equation that represents the linear function, first, what we need to do is to use the two ordered pair to find the slope, m, using the formula, [tex] m = \frac{y_2 - y_1}{x_2 - x_1} [/tex].
After getting the slope (m), find the value of the y-intercept (b), by substituting the value of one of the ordered pairs and the slope value (m) into y = mx + b.
Once the value of m and b is known, plug in the value of m and b into y = mx + b to derive the equation of the linear function.
Use the 2 ordered pairs to find the slope, m .
Then substitute m and one set of ordered pairs into y = mx + b to solve for b.
If given the 2 ordered pairs for a function, the ordered pairs can be first used to find the slope of the function.
For example
(x₁, y₁)(x₂, y₂)
m = slope = y₂ - y₁ / x₂ - x₁
The slope(m) is then substituted in the slope intercept form equation.
y = mx + b
where
m = slope
b = y-intercept
And one set of the ordered pairs is also substituted in the equation to get the value of the y-intercept(b).
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A bag contains green tokens and black tokens. There are 24 green tokens in the bag. The ratio of green tokens to black tokens is 8 to 5. Find the number of black tokens in the bag.
Can I have the answer please?
Answer:
There are 15 Black tokens.
Step-by-step explanation:
If the ratio is 8:5 we divide 24 by 8 to get 3. We then do 5 x 3 for the black tokens and get 15.
The number of black tokens in the bag are 15.
What is mean by Ratio?
A ratio indicates how many times one number contain in another number. The ratio of two number is written as x : y, which is equivalent to x/y.
Where, x and y are individual amount of two quantities.
And, Total quantity gives after combine as x + y.
Given that;
In the bag, there are 24 green tokens in the bag.
And, The ratio of green tokens to black tokens is 8 to 5.
Now,
There are 24 green tokens in the bag.
And, The ratio of green tokens to black tokens is 8 to 5.
So, Number of green tokens = 8x
And, Number of black tokens = 5x
Hence, We can formulate;
⇒ 8x = 24
⇒ x = 3
Thus, Number of black tokens = 5x
= 5 × 3
= 15
Therefore, The number of black tokens in the bag are 15.
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A new health drink has 130% of the recommended daily allowance (RDA) for this vitamin. The RDA for this vitamin is 45 mg. How many milligrams of the vitamin are in the drink?
Answer: 58.5 mg
Step-by-step explanation:
Given: Recommended daily allowance(RDA) for a certain vitamin = 45 mg
To find : Quantity of this vitamin in drink
Amount of vitamin new drink has = 130% of (RDA)
= (130% of 45) mg
= (1.3 x 45 mg [ To convert percentage to decimal , we divide a number by 100]
= 58.5 mg
Therefore, Quantity of vitamin in drink = 58.5 mg
the total cost of tickets to the school play is shown in the table. Write an equation to find the total cost of any number of tickets. Describe the relationship in words. Use the equation to find the cost of 15 tickets.
Amy has a collection of dimes and quarters. If the expression
V=0.25x+0.10y
represents the total value of the coins Amy has, the expression 0.10y
most likely represents the ...........
Answer:
the value of the dimes
Step-by-step explanation:
The expression 0.10y most likely represents the number of dollars when all dimes are clubbed together.
What is a linear equation?A relationship between two or more parameters that, when shown on a graph, produces a linear model. The degree of the variable will be one.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
Amy has a collection of dimes and quarters. If the expression is given as,
V = 0.25x + 0.10y represents the total value of the coins Amy has.
The expression 0.10y most likely represents the number of dollars when all dimes are clubbed together.
More about the linear equation link is given below.
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Find the area of the parallelogram. pick one of these
30 sq cm
40 sq cm
12 sq cm
17 sq cm
Answer:
The area of the parallelogram is 40.
Step-by-step explanation:
You multiply the base by the height:
4*10= 40
HELP PLEASE!!! I just need someone to answer it so that this can help others!!!
Answer:
Bro its right
Step-by-step explanation:
Please answer this is homework i need help with
What is the easiest way to solve negative fractions plus positive fractions?
Answer:
Step-by-step explanation:
and I'll explain why so when when we're
looking into combining fractions
positive negative fractions the main
important thing we need to make sure we
have is like denominators
all right common dinar common
denominator the easiest the easiest way
to find a common denominator is to
multiply the denominators right that's
the easiest way to go ahead and find one
just multiply three times eight which is
24 that's gonna give you your comments
and on there does that make sense so
make sense multiply the denominator but
that's not always going to be the least
common denominator so an easy way to
always check to find the least common
denominator is choose the largest
denominator which would be 8 and then
kind of list out the multiples so is and
sitting determine it does 3 divide into
any of those multiples before we get to
24 so just 3 to buy an 8 no so 8 is not
the least common denominator then we go
to 16 just 3 divided into 16 No
24 yes it does so actually end up 3
times 8 is gonna equal 24 and it's okay
lays knowing if you always want to
multiply your denominators you can
always do that but that just because
you're multiplying you're not always
gonna get the least common denominator
and the problem with that is you're
gonna have to simplify your fraction a
little bit more at the end all right but
it is also a way to always get a common
denominator so my lcd is 24 and what I
like you guys to do is always like write
that down so you can always kind of
remember it and basically when we have
an LCD of 24 what we want to be able to
do is say alright what do I need to
multiply now both of my denominators by
to get to 24 well to get 3 forget about
the negative sign per second for do get
3 we need to multiply by 8 right but
there's a problem if you have a fraction
and you only multiply the denominator by
it you've now changed the fraction think
about 1/2 if you have 1/2 and you
multiply the denominator by 3 you now
have 1/6 right is 1/6 equal to 1/2
no so we need to multiply the numerator
and the denominator by 8 think about
again 1/2 times 3 over 3 equals 3 over 6
is 3 over 6 equivalent to 1/2 yes so
when you're multiplying your fraction we
want to make sure we
keep equivalent fractions for 3/8 we
need to multiply by five over five and
then when I multiply fractions I just
simply multiply across numerator times
numerator denominator times denominator
therefore I get negative 8 over 24 plus
I don't know 3 right thank you I don't
know I was like off in my own world I
guess there you go
sorry so therefore now I have negative 8
24 plus 9 over 24 and now when we need
to add combined fractions we need to
combine fractions as long as they have
common denominators we just add or
subtract our numerators so just think
about negative you owe eight dollars you
have nine dollars in your pocket
therefore you're gonna have one dollar
left right and you keep the denominator
the same question okay letting it
internalize
Evaluate 3.6x + 4.5y when x=3 and y=7
Answer:
42.3
Step-by-step explanation:
3.6(3)+4.5(7)
10.8+31.5
42.3
what is 2/3 of the distance between the points U (-1,4) and B (8,5)
Answer:
6.037Step-by-step explanation:
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\\\U (-1,4)\quad\implies\quad x_1=-1\,,\ \ y_1=4 \\\\B (8,5)\quad\implies\quad x_2=8\,,\ \ y_2=5\\\\\frac12d=\frac23\sqrt{(8+1)^2+(5-4)^2}=\frac23\sqrt{81+1}=\frac23\sqrt{82}\approx6.037[/tex]
1. y = x2 + 2x – 8
Axis of Symmetry:
Vertex:
Domain:
Range:
Answer:
Axis of Symmetry: x=-1
Vertex: (-1,-9)
Domain: (- ∞ ,∞ )
Range: (-9,∞ )
Step-by-step explanation:
Can someone please help with this question please I need help?!
Answer: B
Step-by-step explanation:
Each month, the person seems to grow taller. So, there IS a positive association between height and age.
CAN SOMEONE PLEASE HELP ME THIS TEST WAS DUE 2 DAYS AGO I ONLY GOT 10 MIN LEFT AND IM ONLY ON QUESTION 2 HELPPPP!
Answer:
The amount of water draining at a rate of 2.5 gallons per minute. I hope you do good on your test good luck! :)))
Step-by-step explanation:
Solve:
−7/3a+4=47/3
What is A
I will give extra points to who gets this right also will give brainliest
Answer:
a= -5
Step-by-step explanation
PEMDAS
Sam is driving to San Antonio. He has already driven 110 miles in 2 hours. At
this rate, how many miles will he travel in 30 minutes?
Answer:
27.5 miles in a half hour
Step-by-step explanation:
Divide 110 by 2 then 55 divided by 2 to get 27.5
Brainliest?
Elena wants to make a scale drawing of her bedroom. Her bedroom is a rectangle with length 5 m and width 3 m. She decides on a scale of 1 to 50. a. What would be the width and length of a scale drawing of Elena's bedroom?
Answer: Length = 10cm
Width = 6cm
Step-by-step explanation:
First and foremost, we should note that
1 meter = 100 cm.
Therefore,
Length = 5m = 500 cm
Breadth = 3m = 300 cm.
Since Elena wants to make a scale drawing of 1 to 50, then
Length = 500 cm / 50 = 10 cm
Breadth = 300 cm / 50 = 6 cm.
Therefore, the length of the scale drawing will be 10 cm and the width of the scale drawing will be 6cm.