Answer: it would be y=2.5x*40
Step-by-step explanation:
Answer:
for miles lets use (m) symbol
earnings =(m÷2.5)×40
Step-by-step explanation:
for example
Darnell has run 20 miles
earnings =( 20÷2.5)×40 =8×40= $320
Find the equation of the line which is parallel to y = 4x + 3 and goes through the point (4, 5)
Answer:
y = 4x - 11Step-by-step explanation:
The given line has a slope m = 4.
We know parallel lines have equal slopes.
Use point - slope equation and substitute the coordinates of the given point to get:
y - 5 = 4(x - 4)y - 5 = 4x - 16y = 4x - 16 + 5y = 4x - 11Find the new concentration of a solution if 25. 0 mL of water is added to 125. 0 mL of 0. 150 M NaCl solution. What is the final volume? mL.
Part A: The final volume of the new solution is 150 mL.
Part B: The concentration of the new solution is 0.125 M.
What is the volume?The volume of liquid is defined as the amount of liquid in a three-dimensional container. Volume is the quantity of three-dimensional space occupied by a liquid.
Given that the molarity of NaCl solution is 0.150 M, the volume of NaCl solution is 125 mL, the volume of water added is 25 mL.
Part A:
The final volume of the new concentrated solution is calculated as given below.
[tex]V = 125 + 25[/tex]
[tex]V = 150 \;\rm mL[/tex]
The final volume of the new solution is 150 mL.
Part B:
The mole of the NaCl solution is calculated using the molarity formula.
Molarity of NaCl solution = 0.150 M
Volume of NaCl solution = 125mL or 0.125 L
Molarity = Mole of NaCl solution / Volume of the NaCl solution
[tex]0.150 = \dfrac {Moles}{Volume}[/tex]
[tex]0,150 = \dfrac {Moles}{0.125}[/tex]
[tex]Moles \;= 0.01875[/tex]
The moles of NaCl solution is 0.01875 mole which remains same when water is added. Thus, the molarity of the new concentration can be calculated as given below.
Molarity = Moles of NaCl / Volume of new solution
Molarity = [tex]\dfrac {0.01875}{0.150}[/tex]
Molarity = 0.125 M
Hence we can conclude that the concentration of the new solution is 0.125 M.
To know more about the volume, follow the link given below.
https://brainly.com/question/24650225.
Enola spots an airplane on radar that is currently approaching in a straight line, and
that will fly directly overhead. The plane maintains a constant altitude of 6125 feet.
Enola initially measures an angle of elevation of 16° to the plane at point A. At some
later time, she measures an angle of elevation of 36° to the plane at point B. Find the
distance the plane traveled from point A to point B. Round your answer to the
nearest tenth of a foot if necessary.
Answer:
12930.1
Step-by-step explanation:
Which choice shows the graph of a linear function?
Answer:
4th one
Step-by-step explanation:
because its a line (linear)
There are 60 seconds in a minute. Therefore, there are _______ seconds in 5 1/2 minutes.
Answer:
330 seconds
Step-by-step explanation:
60(5.5)
Solve each system using the elimination method
4x-y=-2
2x+y=2
Which expression is equivalent to −28x2 + 35x?
Answer:
-7x(4x - 5)
Step-by-step explanation:
−28x^2 + 35x
-7x(4x - 5)
Hope this helps!
simplify
(7•87-12•09)×(-3•44)
Answer:
=−66132x
Step-by-step explanation:
((7)(87)−(12)(9))(x)((−3)(44))
=−66132x
How do I work out reverse mean
Answer:
reverse mean going back side.
Lex, Mattie, Penelope, and Wallace shares pound of candy equally. How much candy does each person get?
pound
pound
pound
2 pounds
Answer:
0.05 as decimal
1/20 as fraction
Step-by-step explanation:
Flip the reciprocal and multiply to get the answr you make the 4 into a fraction by doing this ; 4/1 and flip it like this; 1/4. Then multiply it to get 1/20
Have an amazing day!
Please rate and mark brainliest!
Need help with number 9 very urgent !!! Pls show work
please help me quick with it
Answer:
the answer is C
Step-by-step explanation:
I had the same question
What is the value of 12a^-4b^-3 for a = 2 and b = -1?
Answer:
-3/4
Step-by-step explanation:
a = 2 and b = -1
12a⁻⁴b⁻³
= 12(2)⁻⁴(-1)⁻³
= 12(1/16)(-1)
= -12/16
= -3/4
PLEASE HELP
HURRYYY
Answer:
The answer is the last option or 6.
Over 2 days, 12 likes were added.
12/2 is 6.
Over an additional 3 days, 18 likes were added.
18/3 is 6.
So, the average rate of change is 6.
PLEASE HELP FOR BRIANLEST PLEASE
Answer:
The equations in the system have different intercepts so there are two solutions
A dance instructor earns $30 for teaching a class. The instructor earns a 10% raise. After the raise, how much does the instructor get paid for
teaching a class?
Answer:
10/100 x 30 = 3
30 + 3 = 33
Answer:
The answer is $33
Step-by-step explanation:
Given;A dance instructor earns $30 for teaching a class. The instructor earns a 10% raise.Here,
$30 × 10 ÷ 100 = 300/100 = $3
Here, we know the raised amount.
So,
$30 + $3 = $33
Thus, the instructor get paid for teaching a class is $33
-TheUnknownScientist 72
Describing Steps Used to Solve an Equation with Decimals
Examine the steps used to solve the equation.
12.5x − 10.2 = 3(2.5x + 4.2) - 6
1. 12.5x − 10.2 = 7.5x + 12.6 − 6
2. 12.5x − 10.2 = 7.5x + 6.6
3. 12.5x = 7.5x + 16.8
4. 5x = 16.8
5. x = 3.36
Analyze the steps to determine which properties or procedures were used to complete each step
Step 1:
✔ distributive property
Step 2:
✔ combining like terms
Step 3:
✔ addition property of equality
Step 4:
✔ subtraction property of equality
Step 5:
✔ division property of equality
Which fraction does the colored portion of the picture represent?
Answer: 19/24
Step-by-step explanation: There are 19 colored squares out of 24 squares total.
HELP!!! can -21/21 be simplified?
Answer:
Yes
Step-by-step explanation:
since it is -21/21 you can divide it by 21, -21/21=-1, 21/21=1
hence, -1/1
-1/1=-1
70°
x
82°
r
r
6 -
- 4)º
an
160°
(2y - 40
HELP ASAP
Answer:
Step-by-step explanation:
x + 70 = 180 {Linear pair}
x = 180 - 70
x = 110
y + 82 = 180 {linear pair}
y = 180 -82
y = 98
x - 4 = 110 - 4 = 106
2y - 40 = 2*98 - 40
= 196 - 40
= 156
Find the length of side x in simplest radical form with a rational denominator.
Answer:
x = 2[tex]\sqrt{6}[/tex]
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
x² = ([tex]\sqrt{12}[/tex] )² + ([tex]\sqrt{12}[/tex] )² [ the 2 legs are congruent ]
x² = 12 + 12 = 24 ( take square root of both sides )
x = [tex]\sqrt{24}[/tex] = [tex]\sqrt{4(6)}[/tex] = [tex]\sqrt{4}[/tex] × [tex]\sqrt{6}[/tex] = 2[tex]\sqrt{6}[/tex]
Can somebody help me with these problems please
Answer:
[tex]\huge\sf{Solutions :- }[/tex]7. Cos Z=> Cos theta = Base /Hypotenuse
=> Cos Z = 30/50 => 3/5
★ So, Option B) 3/5 is a correct answer.
_______________________
8. Cos X
=> Cos theta = Base/Hypotenuse
=> Cos X = 12/37
★ So, option D) 12/37 is a correct answer.
________________________
9. Sin Z=> Sin theta = Perpendicular/Hypotenuse.
Sin Z = 16/20 => 4/5
★ So, option C) 4/5 is a correct answer
_____________________10. Sin Z=> Sin theta = Perpendicular/Hypotenuse
Sin Z = 48/50 => 24/25
★ So, option A)24/25 is correct answer
________________________
Fernando had to pay $1.40 in sales tax when he purchased a shirt. If the sales tax rate is 7%, how much did his shirt cost? please give explanation thank you
Answer:
it's answer is 1.34 but it can be wrong also
Answer:
$20
Step-by-step explanation:
Fernando paid $1.40 as sales tax and the sales tax rate is 7%.
We can write,
Total cost * 7% = 1.4
Total cost = 1.4/0.07 SInce 7% = 0.07
So, total cost = $20
Betty, Cathy, Isabel, Lani, Alma, and Ursula ran and 800-meter race. Alma beat Isabel by 7 meters. Betty finished 12 meters behind Ursula. Alma finished 5 meters ahead of Lani but 3 meters behind Ursula. Cathy finished halfway between the first and last person. IN what order did they finish? Also indicate the distances between each girl.
Answer:
1. Ursula = y
2. Alma = y - 3 (3 meters behind)
3. Carly = y - 6 (3 meters behind Alma)
4. Lani = y - 8 (2 meters behind Carly)
5. Isabel = y - 10 (2 meters behind Lani)
6. Betty = y - 12 (2 meters behind Isabel)
Step-by-step explanation:
We are going to use different letters to represent the meters run by the girls:
Alma beat isabel by 7 meters, if A is x then Isabel is x - 7
A = x
I = x -7
Ursula beat Betty be 12 meters. Let's call Ursula y, then:
U = y
B = y - 12
Alma finished 5 meters ahead of Lani but 3 meters behind Ursula. Let's call Lani z.
L = z
A = z + 5 = y - 3 (since Ursula was "y" and Alma finished 3 meters behind Ursula)
We're going to leave Carly until the end since she finished halfway between the first and the last girls.
Now we can see that Alma is represented by equations with 3 different letters:
A = x = z + 5 = y -3
Therefore we know that
x = y -3
⇒A = y - 3
And we'll proceed to express all the other girls distances in terms of "y"
We know that Isabel = x - 7. Therefore we can substitute x = y - 3 and we get that
Isabel = x - 7 = (y - 3) - 7 = y - 10
⇒I = y - 10
We already have Ursula and Betty expressed in terms of y.
⇒U = y
⇒B = y - 12
Now let's go back to Alma equation (A = x = z + 5 = y -3) and we see that:
z + 5 = y - 3.
Therefore z = y - 3 - 5 = y - 8.
⇒z = y - 8
We have Lani left who was L= z = y - 8
⇒ L = y - 8
The first girl would be Ursula = y
And the last girl would be Betty = y - 12.
⇒Therefore, Carly finished halfway them both and that would be C = y - 6
So, the order in which they arrived was:
Ursula = y
Alma = y - 3 (3 meters behind)
Carly = y - 6 (3 meters behind Alma)
Lani = y - 8 (2 meters behind Carly)
Isabel = y - 10 (2 meters behind Lani)
Betty = y - 12 (2 meters behind Isabel)
Please Mark as brainliest if i got it correct
Kito makes on online purchase of a guitar case for $39.99, a tuner for $24.99 and picks for $26.99. Taxes are 6% of the total purchase price. Shipping charges are based on the following table:
Amount of Purchase
Standard Shipping
Express Shipping
up to $50
$5.10
$7.00
$50 up to $100
$6.35
$8.20
$100 up to $200
$7.80
$11.60
$200 and over
$10.50
$16.45
Kito selects express shipping and the company bills his credit card $105.69 for the total of the online purchase. Determine if Kito has been billed correctly for his purchase.
a.
Kito has been billed correctly.
b.
Kito has not been charged enough for his purchase.
c.
Kito has been over charged by $1.85 for his purchase.
d.
Kito has been over charged by $3.40 for his purchase.
Answer:
a. Kito has been billed correctly
Step-by-step explanation:
We simply need to check Kito's work to see if his price is accurate.
First, we can add the prices together to find the price before the sales tax is applied: 39.99 + 24.99 + 26.99 = $91.97
We can use this formula to figure out the total cost, C, after the sales tax, t is added:
C = l + (l * (t / 100)), where l = the price before applying the sales tax
C = 91.97 + (91.97 * (6 / 100)) = 97.4882 = $97.49
We know that the total cost lies between the 50 and 100 and that Kito chose the express shipping. Thus we add: 97.49 + 8.20 = $105.69.
If we did not round before, we would still get the same answer when rounding: 97.4882 + 8.20 = 105.6882 = $105.69
Kito has not been charged enough for his purchase.
Option B is the correct answer.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example: so
1 + 3x + 4y = 7 is an expression.com
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
First, we need to calculate the total cost of the purchase before shipping and taxes:
= $39.99 + $24.99 + $26.99
= $91.97
Next, we need to add the shipping cost based on the amount of the purchase:
Since the purchase amount is between $50 and $100, the express shipping cost is $8.20.
So the total cost of the purchase with shipping is:
= $91.97 + $8.20
= $100.17
Finally, we need to add the tax:
= 6% of $100.17
= $6.01
So the total amount Kito should be billed is:
= $100.17 + $6.01
= $106.18
And,
Since Kito was billed $105.69, he has been undercharged by $0.49.
Therefore,
Kito has not been charged enough for his purchase.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ5
AABC shows the floor space that a corner cabinet takes up. What is the
area?
The area of the triangle is 2√5 square units
Arwa of a triangleThe formula for finding the area of a triangle is expressed as:
A = 0.5bh
b is the base
h is the height of the triangle
Using the distance formula
b = AC = √(5-1)²+(0-2)²
base =√20
base = 2√5
For the height
h = √(1-3)²+(4-4)²
base =√2²
base = 2
Area = 0.5(2)(2√5)
Area = 2√5 square units
Hence the area of the triangle is 2√5 square units
Learn more on area of triangle here: https://brainly.com/question/23945265
What is the solution to the following system of equations?
x − 3y = 6
2x + 2y = 4
(-1, 3)
(3, -1)
(1, -3)
(-3, 1)
Answer:
(3, -1) is your answer
Step-by-step explanation:
x − 3y = 6
2x + 2y = 4
|
x - 3y=6
x+y=2
Thank you if you help. It may take some time to give someone brainlyist just be patient.
Answer:
The bathroom measures 14 feet by 15 feet. They have 188 square feet of tile. Does the family have enough tile to cover their bathroom floor? Yes, they have enough tiles and will have 159 square feet of tiles left over.
Step-by-step explanation:
Mark me brainliest!!
Elisa used 4 cups of flour to
make her cupcakes. If she
only made a batch,
how much flour would she
need?
Answer:
i think there is missing context?
x + y = 8
how do i solve for x
Answer:
x = 8 - y
Step by step explaination:
==>x + y = 8
==> x = 8 - y
==> substract the value
==> Done