Intro:
Hello!!! Princess Sakura here ^^
Step-by-step explanation:
Step 1:Solve x−4y=−7 for x...
[tex]x-4y=-7\\x=4y-7[/tex]
Step 2:Substitute 4y−7 for x in −x+2y=3...
[tex]-x+2y=3\\-(4y-7)+2y=3\\-4y+7+2y=3\\-2y+7=3\\-2y=-4\\y=2[/tex]
Step 3:Substitute 2 for y in x=4y−7...
[tex]x=4y-7\\x=4(2)-7\\x=8-7\\x=1[/tex]
So the solution of these equations is (1,2).
A marathon is 26.2 miles long. There is a water station every 1 31/100 miles along the race route. Which expression represents the total number of water stations? A. 26.2−1 31/100 B. 26.2+1 31/100 C. 26.2÷1 31/100 D. 26.2(1 31/100)
Answer: C. [tex]26.2\div1\dfrac{31}{100}[/tex]
Step-by-step explanation:
Given: A marathon is 26.2 miles long.
There is a water station every[tex]1\dfrac{31}{100}[/tex] miles along the race route.
Total number of water stations = (marathon distance) ÷ (distance between any two water stations)
The expression represents the total number of water stations[tex]=26.2\div1\dfrac{31}{100}[/tex]
Hence, the correct option is C.
Raoul is training hard for a 10k run he takes 42.85 minutes to complete 5laps of the park how much time on an average does he clock to complete a single lap
Answer: He took 8.57 minutes on average to complete one single lap.
Step-by-step explanation:
Given: Time taken to complete 5 laps = 42.85 minutes
Divide both sides by 5, we get
On average, Time taken to complete 1 lap = [tex]\dfrac{42.85}{5}[/tex] minutes
= 8.57 minutes
hence, he took 8.57 minutes on average to complete one single lap.
Can someone be my math helper please I’m so bad at math lol
Answer:
I'd gladly help! Comment on this, and I'll help. :)
Step-by-step explanation:
Answer:
comment questions i will try my hardest to answer i have a A+ in math so if anyone needs help
Step-by-step explanation:
please help me with this question.
Answer
give more information on the subject please, we cant solve it like this
Step-by-step explanation:
Giving brainiest if you answer correctly
Answer:
y=2x+1
Step-by-step explanation:
pick any 2 coordinates
for example:
(1,3) and (2,5)
1x2=2+1=3
2x2=4+1=5
Scott’s Concepts & Designs creates custom t-shirt designs. They charge $8 for a short sleeved t-shirt and a one-time design fee of $20. The total cost of a Yale order was $452. How many t-shirts did Yale order?
Answer:
the answer would be 16 if you round
Identify the slope, y-intercept, and x-intercept of the graph of the linear
equation.
19. 5x + 3y = 15
20. y = x - 3
21. x = -4
PLEASE HELP I’M SO LOST
MY TEACHER DOESN’T TEACH AT ALL
Please help me, I don't really understand this. It's due today, also please show your work. I'm giving 50 points for this problem.
Answer:
1) 20 % decrease
2)21% decrease
3)8% increase
4)39.9% increase
5)23 % increase
6) 43.3 decrease
Step-by-step explanation:
Divide: (3.75 x 10^6 ) / (2.5 x 10^3 )
Answer:
1500
Step-by-step explanation:
A bag contains 9 green marbles and 12 white marbles. In simplest form, what are the odds in favor of drawing a white marble?
A) 4:7
B) 4:3
C) 1:7
D) 3:4
Answer:
3 : 4, D
Step-by-step explanation:
Since the ratio is 9 : 12, simply put it in fraction form and simplify.
Does anyone know what 9 + 10 is?
Answer:
9+10 is 19
Step-by-step explanation:
HELP PLSS ASAP TY:Choose all expressions that are equal to 28.3.
A. 27 + 0.91 + 0.39
B. 0.01 + 28.02
C. 9.9 + 9.8 + 9.6
D. 0.02 +28 + 0.28
E. 27.3 + 1
Answer:
A, D, E
Step-by-step explanation:
Write the equations of the line in slope-intercept form that is perpendicular to 5x-3y=-18 and passes through (-10,-4).
The Radius of a pizza is 7 inches how many inches is the diameter
Answer:
14 Inches
D= R + R
Add the radius by itself to get the diameter
If Cool Shirts offered a deal for free shipping, how many shirts would you need to
purchase until the companies cost the same? *
Company $ Per Shirt Shipping
Cool Shirts $8.00 $13.00
Total Tees
$7.50
$16.00
A. 24
B. 28
C. 32
D. 48
Please help
Answer:
b
Step-by-step explanation:
What equation represents the same value as 15/12
Answer:
15/12 is the same as 15÷12
Step-by-step explanation:
fractions is just division when u see the fraction line the numerator is being divided by the denominator if that makes sense
To attend the concert, it costs $25 for parking plus $45 per ticket. If Nick paid $250, how many tickets did he purchase?
Answer:
5
Step-by-step explanation:
250-25=225
so then that means...
225 divided by 45=5
5
Ramona works in a clothing store where she earns a base salary of $140 per day plus 14% of her daily sales. Write an equation to describe her earnings.
Answer:
hola hi
La verdad no se Inglés y no te podría ayudar
Which of the numbers listed below are solutions to the equation? Check all
that apply.
x=0
A.
B. 1
C. -2
D. O
E. 2
F. None of these
Simplify the expression shown. 3.5(10g - 2) + 17 + 20g
Answer:
The answer is 55g+10
Step-by-step explanation:
first you use distributive property then add like terms.
Quincy drew a map of Galveston Island. In the scale Quincy used for the map, 2 centimetres represents 10 kilo meters. Galveston Island is actually 43.5 kilo meters long. What is the length in centimetres of Galveston Island on Quincy's map?
Answer:
8.7cm
Step-by-step explanation:
From the question, we know that:
10 km = 2 cm(on the map)
43.5 km = x cm
Cross Multiply
10 × x cm = 43.5km × 2
x cm = 43.5 km × 2/10
x cm = 8.7 cm
The length in centimetres of Galveston Island on Quincy's map is 8.7cm
A teacher buys 4.25 ounces of a compound for an experiment. The compound costs $2.32 per ounce. The teacher pays with a $10 bill. How much change does the teacher receive?
Given:
Compound for an experiment = 4.25 ounces
Compound costs = $2.32 per ounce.
Teacher pays = $10
To find:
The amount of change teacher receive.
Solution:
Cost of 1 ounce of compound = $2.32
Cost of 4.25 ounce of compound = 4.25 × $2.32
= $9.86
It is given that, the teacher pays with a $10 bill.
Amount of change = $10 - $9.86
= $0.14
Therefore, the teacher receive $0.14 change.
The dimensions of a rectangle are 3.61 cm and
2.57 cm, each correct to 3 significant figures.
a) Write down the upper and lower bounds for each dimension
b) Find the upper and lower bounds of the area of the rectangle.
c) Write down the upper and lower bounds of the area correct to 3 significant figures
Answer:
a) 3.605 and 3.615, 2.565 and 2.575
Step-by-step explanation:
Add the following integers.
12 + (-7) =
Your answer
5
Answer:
5 is the answerlolStep-by-step explanation:
If you know the answer why post a question ?
Thanks anyway ♥
[tex]12 + (-7)\\\\\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a\\\\=12-7\\\\\mathrm{Subtract\:the\:numbers:}\:12-7=5\\\\=5[/tex]
I neeeed the answer please!!!
What are the solutions of x squared plus 6x minus 6 equals 10 ?
x² + 6x - 6 =10
Solutions-
6 - 6x + 2²= 10
6 - 2² + 6x= 10
Answer:
x = 2, and/or -8:)
Step-by-step explanation:
Move all terms to the left side and set equal to zero. Then set each factor equal to zero;)
Can I have brainliest?
5. What is the solution to the system of equations,
graphed below?
Answer:
(-2,3)
Step-by-step explanation:
It's the point where the 2 lines meet
The population of fish in a certain lake increased from 370 to 420 over the months of
March and April. At what rate is the population increasing?
Answer:
50 new fish in total
so lets say 25 per month
Rate: 25 fish per month
Step-by-step explanation:
The rate is the population increasing is 0.135 or 13.5% .
What is Growth rates?Growth rates refer to the percentage change of a specific variable within a specific time period.
Growth rate= [tex]\frac{Present value - Past value}{Past value}[/tex]
According to the question
The population of fish increased from 370 to 420
i.e
Present value = 420
Past value = 370
over the months of March and April
By using Growth rate formula :
Growth rate= [tex]\frac{Present value - Past value}{Past value}[/tex]
Now,
Substituting values in formula
Growth rate= [tex]\frac{420 - 370}{370}[/tex]
= [tex]\frac{50}{370}[/tex]
= 0.135 or 13.5%
Hence, the rate is the population increasing is 0.135 or 13.5% .
To know more about Growth rates here:
https://brainly.com/question/13870574
#SPJ3
A(n)=13(n-1)(4) what is A(2)
Answer:
A(2) = 52
General Formulas and Concepts:
Order of Operations: BPEMDAS
Step-by-step explanation:
Step 1: Define
A(n) = 13(n - 1)(4)
A(2) is n = 2
Step 2: Solve
Simplify: A(n) = 52(n - 1)Substitute: A(2) = 52(2 - 1)Subtract: A(2) = 52(1)Multiply: A(2) = 52Slope = −1, y-intercept = 5
Answer:
Ok
Step-by-step explanation: