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aleksandrvk [35]
3 years ago
13

Solve the equation 2/5x-1=9. Complete each step of the solution and check your solution

Mathematics
1 answer:
Fofino [41]3 years ago
3 0

Answer:

x = 25

Step-by-step explanation:

2/5x - 1 = 9

Add 1 to both sides

2/5x = 10

Multiply by 5 on both sides

2x = 50

Divide by 2 on both sides

x = 25

Check the answer:

Plug in 25 for x

2/5(25) - 1 = 9

10 - 1 = 9

9 = 9

The answer is correct.

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Answer:

28 meters above sea level or just positive 28

Step-by-step explanation:


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3 years ago
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An artist creates a​ cone-shaped sculpture for an art exhibit. If the sculpture is 5 feet tall and has a base with a circumferen
tatyana61 [14]

Answer:

The volume of the sculpture is 67.824 ft^3

Step-by-step explanation:

In this question, we are to calculate the volume of a conical sculpture, given the height of the sculpture and the circumference of the base.

Mathematically, the volume V of the sculpture is given by;

V =1/3 * π * r^2 * h

Now, we have the height directly from the question but we do not have the value of the radius.

We can obtain the value of the radius from the circumference of the base

Mathematically, the circumference C of the base of the cone is given by;

C = 2 * π * r

Inputing the value of the circumference, we have;

22.608 = 2 * 3.14 * r

r = 22.608/(2 * 3.14)

r = 22.608/6.28

r = 3.6 feet

Now plugging these values into the volume equation, we have

V = 1/3 * 3.14 * 3.6^2 * 5

V = 67.824 ft^3

6 0
4 years ago
PLEASE HELP ME ASAP!!!!!!!!!!!!
arlik [135]
It’s 180 I think not sure
5 0
3 years ago
What are the 2 reasons that the Louisiana purchase caused a debate in the usa​
ehidna [41]

It was a debate between the northerners and southerners (forgive my spelling). The northerners feared the addition of more slave states and a corresponding lack of reprenestation of their intrests in the North. For the southern slave holders, new western lands would be a boon (helpful) to enslaved people and the Louisiana purchase threatened to entrench and expand their suffering to western territories.

I got this on Khan Academy

5 0
3 years ago
Write an Irrational number that can be added to the irrational number 5 to get a rational sum of 6.​
ki77a [65]

Answer:

41 -12√5

Step-by-step explanation:

  • All square roots of natural numbers, other than of perfect squares, are irrational.

so, let the unknown irrational number be x,

solve:

√x + √5 = 6

√x = 6 - √5

( √x ) ² = ( 6 - √5 )²

x = ( 6 - √5 )( 6 - √5 )

x = 36 -6√5 -6√5 + 5

x = 41 -12√5

7 0
3 years ago
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