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nirvana33 [79]
4 years ago
5

the value of y varies directly with x, and when x = 1/4 , y = 25. What is the value of y when x is 2 1/3 need help ASAP

Mathematics
1 answer:
Grace [21]4 years ago
3 0

Answer:

y=233\frac{1}{3}

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

In this problem we have

For x=1/4, y=25

Find the value of k (constant of proportionality)

y/x=k -----> k=25/(1/4)=100

The linear equation is

y=100x

Find the value of y when the value of x=2\frac{1}{3}

substitute the value of x in the equation but first convert to an improper fraction

x=2\frac{1}{3}=\frac{2*3+1}{3}=\frac{7}{3}

y=100(\frac{7}{3})=\frac{700}{3}

convert the result in mixed number

\frac{700}{3}=\frac{699}{3}+\frac{1}{3}=233\frac{1}{3}

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3. Reasoning Ben says that n = 5 is the solution of the equation 7n = 45. How can you check whether Ben is correct? ​
likoan [24]

Answer:

You cant, because Ben is WRONG, unless you made a typo while writing the question

Step-by-step explanation:

If you subsitute N for 5, then the equation would be 7 x 5 = 45. However, this is not true. The correct equation is 7 x 5 = 35, so Ben is wrong UNLESS you made a typo while writing the question.

Hope this helped! If it did, please mark it brainliest! It would help a lot! :D

6 0
3 years ago
I need help on my homework... plz
Kazeer [188]

Nevermind i see it. one sec

7 0
3 years ago
Please help!!! Thank you!!!
Reptile [31]
To find the total area of this figure, it would be easiest to find the area of the left part (rectangle) and then find the area of the right part (triangle), and then add the two area values together.

First, we will find the area of the rectangle, using the formula A = lw, where l is the length of the rectangle and w is the width of the rectangle.
The length of the rectangle is 13 cm and the width is 9 cm. If we substitute in these values into our equation, we get:
A = (13cm)(9cm)
A= 117 cm^2

Next, let’s find the area of the triangle, using the formula A=(1/2)bh, where b is the base of the triangle and h is the height.
The base of the triangle is 11 cm and the height of the triangle is 5 cm (found by subtracting 13-8 as seen in the figure). If we substitute in these values and simplify, we get:
A=1/2(11cm)(5cm)
A=1/2(55cm^2)
A=27.5 cm^2.

When we add together the area of the rectangle with the area of the triangle, we will get the total area of the figure.

117 cm^2 + 27.5 cm^2 = 144.5 cm^2
Your answer is 144.5 cm^2 or the first option.

Hope this helps!
8 0
3 years ago
Answer my question and i will mark you as brainliest its that easy, trust me i promise
Lesechka [4]

Answer:

Hope that help the answer is 300

Step-by-step explanation he drives for 3 hours at a rate of 80 km per hour, multiply:

Now we need to find how far he goes in 45 minutes. There are 60 minutes in an hour, so write and simplify:

45 is three quarters of an hour, so multiply that by 80 km per hour:

Add the distances together:

At a rate of 80 km per hours, in 3 hours and 45 minutes, Tim drives 300 km.

Finito.

R

7 0
3 years ago
Read 2 more answers
John read the first 114 pages of the novel, which was 3 pages less than 1/3 of the novel.
sp2606 [1]
If they're asking you how many pages are in the novel, there would be 351. To find this, you just add 3 to 114, which is 117 and multiply it by 3, which is 351. If they're asking something else, let me know and I'll try to help. I hope this helps!
8 0
3 years ago
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