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3 years ago

How to solve 3(x+1)=5(x-2)+7

1 answer:

7 0

So first do 3(x+1) which is 3x+3 because you have to multiply the outside number by the stuff in side the parentheses. Then you do the 5(x-2)+7 and it should be 5x-10+7 so now your equation should be 3x+3=5x-10+7 now subtract the 3x from the 5x and now your equation should look like this: 3=2x-10+7. Then you add the 10 and the 7 so now your equation should look like this: 3=2x-3 because it's a -10 and a positive 7 it would be -3. So then you have to add the -3( which now becomes positive to the other 3 in front of the = sign. So now your equation should look like this: 6=2x. Now divide by 2 to get x by its self and now your answer should be 3=x or x=3.

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May 06,

Andre45 [30]

Answer:

343 cubic inches

Step-by-step explanation:

7 times 7 times 7 is 343

3 0

2 years ago

3. The equation 4x + 16y = 36 is a true equation for a particular

Kazeer [188]

Answer:

See below.

Step-by-step explanation:

We know that the equation $4x+16y=36$ is a true equation for a particular value of x.

Now, let's see what happens if we divide everything by 4. In other words:

$\frac{4x+16}{4}=\frac{36}{4}$

Divide:

$x+4=9$

So, we get $x+4=9$ .

When we divided everything by 4, we used the division property of equality. Under this property, the equation remains the same even if we divided since we did the <em>same thing to both sides of the equation. </em>

Therefore, $x+4y=9$ is also true for the same value of x because it is just a simplified version of $4x+16y=36$ .

4 0

4 years ago

Helppppppppppppppppppp

4vir4ik [10]

Answer:

$x {2} + (y - 3) {2} = 9$

Step-by-step explanation:

By using the formula:-

$(x - h) {2} + (y - k) {2} = r {2}$

where, (h,k) is the center and r is the radius

4 0

3 years ago

mr.rogers bought a computer that cost 2,500. the sales tax rate was 7% how much did he pay for the computer

Anna [14]

Answer:

it's answered...............

3 0

2 years ago

How do you this question? Please explain.

Nuetrik [128]

Answer:

Step-by-step explanation:

Recognize that all the triangles are right triangles, so are similar to each other. In these similar triangles, the ratio of the short side to the long side is the same for all.

... CB/CA = CT/CB

... CB² = CA·CT = 10·6 = 60 . . . . . . . . . . multiply by CA·CB; substitute values

... CB = √60 = 2√15 . . . . . . . take the square root; simplify

_____

<em>Comment on this solution</em>

The altitude to the hypotenuse of a right triangle (CB in this case) divides the hypotenuse into lengths such that the altitude is their geometric mean. That is ...

... CB = √(AC·CT) . . . . as above

This is true for any right triangle — another fact of geometry to put in your list of geometry facts.

3 0

3 years ago