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Nina [5.8K]
3 years ago
7

I really need help pls

Mathematics
1 answer:
LenKa [72]3 years ago
6 0

Answer:

b

Step-by-step explanation:

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Solving rational equations<br><br> solve for x: 3/x-4=7/x
KIM [24]

Solving the rational equation \frac{3}{x-4}=\frac{7}{x} the value of x is 7

Step-by-step explanation:

We need to solve rational equation: \frac{3}{x-4}=\frac{7}{x} and find value of x.

Solving:

\frac{3}{x-4}=\frac{7}{x}

Cross multiplying:

3(x)=7(x-4)\\Simplifying:\\3x=7x-28\\3x-7x=-28\\-4x=-28\\x=-28/-4\\x=7

So, value of x = 7.

Solving the rational equation \frac{3}{x-4}=\frac{7}{x} the value of x is 7

Keywords: Solving the rational equation

Learn more about Solving the rational equation at:

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  • brainly.com/question/2456302

#learnwithBrainly

8 0
3 years ago
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Circle O is shown below. The diagram is not drawn to scale. What is the measure of angle BAC?
mafiozo [28]
56.5, since its (180 - 67)/2
5 0
3 years ago
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Solve BCD Round the answer to the nearest hundredth
lesya [120]

Answer:

A

Step-by-step explanation:

The measure of angle D can be found using the Interior Angle Sum of a Triangle.

The angles of a triangle add to 180. This means:

90 + 21 + x = 180.

111 + x = 180

x = 69

The solution is A.

Angle B is smaller than Angle D which means CD will be smaller than BC.

7 0
3 years ago
A cone is 3 inches high and has a base with a surface area of 7 square inches. What is the volume of the cone?
lawyer [7]

Answer: the answer should be 7

Step-by-step explanation:  V=πr2h

3=π·1.52·3

3≈7.06858

you can find the radius for the area of the base 7 by dividing by \pi like such 7/3.1459 the squared because remember its in r2 form which give you 1.5 then plug this in for one of two ways to solve A·\pi 1/3 or V=πr2h

4 0
3 years ago
50 pts (and will mark brainliest)
Alex787 [66]

Answer:

c. 21/200

hope I helped!

6 0
3 years ago
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