Answer:
Car A speed = 80 m/s
Car B speed = 60 m/s
Step-by-step explanation:
Let Speed of Car A be represented as x
Let Speed of Car B be represented as y
280 = (x+y)(2)140 = x+y --> Equation 1Let z represent the distance that Car A travels until it catches up to Car B
280+z = x(14)Since it takes 14 hours for Car B to cover the distance z,
z = 14y280+14y = 14x280 = 14(x-y)20 = x-y --> Equation 2Solving Equation 1 and Equation 2, we get:
x = y+20140 = 2y+20120 = 2yy = 60 x = y+20 = 80Answer:
Car A speed = 80 km/h
Car B speed = 60 km/h
Step-by-step explanation:
I'll mark you brainliest if your correct
Answer:
The answer is 7
Step-by-step explanation:
on the graph number 6 is spun at 7
ѕєє thє híght σf вαr αt 6!! whαt'ѕ thє hєíght? σвvíσuѕlч ít'ѕ 7
í hσpє чσu gєt ít :)
I need help with this ASAP. Can you tell me what goes in what box.
Answer:
answers
Step-by-step explanation:
2 and 3rd
Markale sold his house for 175,000. If there is a 7% sales tax, how much money did he pay taxes
Answer:
12250
Step-by-step explanation:
50 POINTS!!! Nadeem is training for a bicycle race. On Monday, he bicycled for 30 minutes at 30 miles per hour. He rested for 10 minutes and then bicycled for 20 minutes at 36 miles per hour. Complete the table below and or draw the distance-time graph. (I JUST NEED THE GRAPH PART GIVING BRAINLIEST FOR BEST GRAPH)!!!
Answer:
your two points would be 30 minutes and 15 miles then 60 minutes and 18 miles
There are 48 students in a class and 6 of them are girls. What percent are boys
Answer:
87.5%
Step-by-step explanation:
If there are 48 students in total and 6 girls, then the remaining students are boys
The number of boys = 48 - 6 = 42
Now, calculate the %
42/48 x 100 = 7/8 x 100 = 87.5%
Hope this helps
If there are 48 students in a class and 6 of them are girls then the percentage of boys in the class is 87.5%,
Use the concept of percentage defined as:
A figure or ratio that may be stated as a fraction of 100 is a percentage. If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100.
The proportion, therefore, refers to a component per hundred. Per 100 is what the word percent means. The letter "%" stands for it.
Given that,
Number of students = 48
Number of girls = 6
Then number of boys = 48 - 6
The number of boys = 42
Therefore,
The percentage of boys in the class is,
[tex]\dfrac{42}{48}\times 100= 87.5 \text{ percent}[/tex]
Hence,
There are 87.5 percent of boys in the class.
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Help is needed, thank you so much!
Answer:
t=36
Step-by-step explanation:
54-18 = 36
Answer:
t + 18 = 54
Step-by-step explanation:
t + 18 = 54
subtract 18 from both sides
t = 36
The temperature during the night was 36 degrees
Hope that helps
Use the long division method to find the result when 4x^3+23x^2 + 21x + 30 is
divided by x +5.
Answer:
A polynomial is an algebraic expression made up of two or more terms subtracted, added, or multiplied. A polynomial can contain coefficients, variables, exponents, constants, and operators such as addition and subtraction.
It is also important to note that, a polynomial can’t have fractional or negative exponents. Examples of polynomials are; 3y2 + 2x + 5, x3 + 2 x 2 − 9 x – 4, 10 x 3 + 5 x + y, 4x2 – 5x + 7) etc. Like number, polynomials can undergo addition, subtraction, multiplication, and division.
We saw addition, subtraction, multiplication, and long division of polynomials previously.
hope it helps make brainlliest ty
Which graph represents the function f(x) = 4|x|?
Which graph represents the function f(x) = 4|x|?
It looks like a "V" going straight up from 0, and hits both 4 and -4 y while going up perfectly
The graph opens upward, and it has a vertex of (0,0)
What is vertex?The vertex of an equation is the minimum or the maximum point on the graph of the equation
The equation of the graph is given as:
[tex]f(x) = 4|x|[/tex]
The above equation represents an absolute value function
An absolute value function is represented as:
[tex]f(x) = a|x -h| + k[/tex]
So, by comparison, we have:
[tex]a = 4[/tex]
[tex]h = 0[/tex]
[tex]k = 0[/tex]
This means that the graph opens upward, and it has a vertex of (0,0)
See attachment for the graph of [tex]f(x) = 4|x|[/tex]
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what number multiples to 24 and adds to 10?
Answer:
4 and 6?
im not sure if you meant numbers
Step-by-step explanation:
Why is homework inportant?
Step-by-step explanation:
homework is like extra practice about what u had previously learned about that day
Help please due in 45 minutes
Answer: B
Step-by-step explanation:
A circular swimming pool is 21 feet in diameter.
How many feet around is the pool?
Answer:
the answer is 66feet
Step-by-step explanation:
can i get a brainliest plz
Two window washers, Meg and Bert, lean a ladder against the side of a building so that Meg can wash a window while Bert holds the ladder. The top of the ladder reaches the window, which is 8 meters off the ground. The base of the ladder is 6 meters away from the building. How long is the ladder?
Step-by-step explanation:
we can solve this question using Pythagorean theorem the hypotenuse of the ladder is 8 metres and base of the ladder is 6 metres so height will be..........
Hypotenuse²=Base²+ Height²
8²=6²+H²
64-36=H²
28=H²
7√2=H² Answer
Answer:
10
Step-by-step explanation:
How many grams are 7.00 x 1022 molecules of NaOH?
Answer:
46.5
explanation
6.022*10^23 molecules=40g.
7.00*10^23=40*7.00*10^23/6.022*10^23 g =46.5 g
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 4.65g are 7.00 x 10²² molecules of NaOH.
What is mole?The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample.
we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number
mole =given number of atoms ÷ 6.022×10²³(Avogadro number)
given number of atoms of NaOH= 7.00 x 10²² atoms
Substituting the values
mole=7.00 x 10²²÷ 6.022×10²³
mole =0.116 moles of NaOH
mass of NaOH= Molar mass of NaOH× moles of NaOH
= 40 × 0.116
= 4.65g
Therefore, 4.65g are 7.00 x 10²² molecules of NaOH.
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In a team of 24 players, about 80% of the team was on the honor roll last quarter. How many students were on the honor roll?
Answer:
19
Step-by-step explanation:
24 * 80% = 24*0.8 = 24* 8/10 = 24*4/5 = 96/5 = 19.2
round down becuase 0.2, or 20% of a person can not earn honor roll without suffering catastrophic organ failure.
Noah uses 1/2 of a cup of vinegar in his salad dressing recipe. How much vinegar would Noah use to make 3 1/6 recipes? Write your answer as a fraction or as a whole or mixed number.
(Please help me)
Answer:
1 7/12 cups
Step-by-step explanation:
1/2 x 3 1/6 = 1/2 x 19/6 = 19/12 or 1 7/12
For 1 he uses half cup
For 3 1/6 of the same recipe
He would use:-1/2*3 1/6
19/12 cup of vinegar
=1 7/12(Answer)
find the missing side 3 and 4.
Answer:
3. [tex]5\sqrt{3} \\[/tex] m
4. 5 m
Step-by-step explanation:
Just use Pythagorean theorem
6.7
x 2.5
2 x 6 =
2 x 0.7 =
1
11
0.5 x 6 =
0.5 x 0.7 =
Answer:
6.7
x 2.5
2 x 6 =53
Step-by-step explanation:
Answer:
1. 16.75
2. 12
3. 1.4
4. 1
5. 11
6. 3
7. 0.35
A company used 7.4 x 105 sheets of paper a month, the accounting department used 8.9 x 103 sheets. How many were used by other departments during the month
Answer:
731,100
7.311 × 10^5
Step-by-step explanation:
The computation of the number of sheet used by other department is given below:
Given that
The company used 7.4 × 10^5 sheets of paper So it would be 740,000
And, The accounting department used 8.9 × 10^3 sheets so it would be 8,900
Now the number of sheet used by other department is
= 740,000 - 8,900
= 731,100
= 7.311 × 10^5
Find the value of x. Round your answer to the nearest tenth.
x≈
Answer:
You did not give us an equation :\
PLEASE HELP FAST AND PLEASE DON'T POST A LINK
Your parents are planning to rent you an apartment when you go to college. The annual contract is $535.00/month with a 2-month penalty for breaking the lease. The month-to-month contract is $615.00/month. What is the difference in the amount paid if you leave after 8 months?
Answer:
The difference in amount = $430
Step-by-step explanation:
1- Annual contract:
The annual contract means a contract for 12 months. There is a month penalty for breaking the lease.
This means that, if you left after 8 months, you will have to pay for 10 month.
Total paid = monthly payment * 10
Total paid = 535 * 10 = $5350
2- Month-to-month contract:
You will only paid for the 8 months you stayed,
Total paid = monthly payment * 8
Total paid = 615 * 8 = $4920
3- Getting the difference:
We can note that a month-month contract is a better option if you intend to stay for only 8 months
Difference = 5350 - 4920 = $430
Hope this helps :)
A number of dimes and quarters are worth $2.55. If the number od dimes and quarters were interchanged the resulting new amount would be $2.70. How many of each kind of coin were there before the interchange?
Answer:
8 dimes
7 quarters
Step-by-step explanation:
Let number of
Dimes = x ; quarters = y
10x + 25y = 255 ___(1)
25x + 10y = 270 ___(2)
From (1)
10x = 255 - 25y
x = (255 - 25y) / 10
x = 25.5 - 2.5y
Put x = 25.5 - 2.5y in (2)
25(25.5 - 2.5y) + 10y = 270
637.5 - 62.5y + 10y = 270
-52.5y = - 367.5
y = 367.5 / 52.5
y = 7
x = 25.5 - 2.5(7)
x = 25.5 - 17.5
x = 8
What is the solution to
this system of linear
equations?
if jeff has 20 apples and mike has 18 apples how many aplles do they both have combined.
the base of a jewelry box is a square with a side length of 5 1/2 inches. the box is 2 inches high. what is the volume of the box?
The volume of the jewelry box is 60 1/2 cubic inches.
The area of a square with a side length of 5 1/2 inches can be found by multiplying the length of one side by itself, giving:
Area = (5 1/2) × (5 1/2) = 30 1/4 square inches
The height of the box is 2 inches.
Therefore, the volume of the jewelry box can be found by multiplying the area of the base by the height of the box, giving:
Volume = Area x Height = (30 1/4) × 2 = 60 1/2 cubic inches
Thus, the volume of the jewelry box is 60 1/2 cubic inches.
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Graph this function: Y = x + 11 (you can just tell me the coordinates)
Find the solution to the system of equations.
x + 3y = 4
2x + 5y = 12
A. (3.8)
B. (-8,4)
C. (16,-4)
D. (1.2)
E. (-1,-2)
Answer:
C (16,-4)
Step-by-step explanation:
16+3*-4=4
16+(-12)=4
16-12=4
4=4
2*16+5*-4=12
32+(-20)=12
32-20=12
12=12
need help with this !
Answer:
(-2,14) Hope this helps! Have a great day!!!
(This is for my Algebra ll project all you need to do is answer this question) How many siblings do you have?
Answer:
I have two Sisters
Step-by-step explanation:
Please Help!!!
The 2 questions are attached below.
Answer:
C. 80
Step-by-step explanation:
Hope This Helps! : )