All categories

2 years ago

Solve this 2 step equation 3x-8=7

Mathematics

2 answers:

Gwar [14]2 years ago

4 0

Answer:

X=5

Step-by-step explanation:

3x-8=7

3x=15 (add 8 to both sides)

X=5 (divide by 3)

Ne4ueva [31]2 years ago

3 0

Since, x = 5
So,
3x - 8 = 7
or, 3 x 5 - 8 = 7
Therefore, 15 - 8 = 7

You might be interested in

Round 2.5 to the nearest whole number?

statuscvo [17]

Answer:3

Step-by-step explanation:

3 0

2 years ago

−4(m+6)=−8 plz answer

dangina [55]

Answer:Divide both sides by the numeric factor on the left side, then solve.

−

Step-by-step explanation:

5 0

3 years ago

Micah was asked to add the following expressions: 3x2−x−9x2+3x+2+−2x2+2x+5x2+3x+2 First, he combined like terms in the numerator

shtirl [24]

Micah was asked to add the following expressions:

$\frac{3x^2-x-9}{x^2+3x+2} + \frac{-2x^2+2x+5}{x^2+3x+2}$

First, he combined like terms in the numerator and kept the common denominator

First step is correct. He added the like terms in the numerator, because the denominators are same.

$3x^2 -x -9 -2x^2+2x+5becomes x^2 +x -4$

So he got , $\frac{x^2+x-4}{x^2+3x+2}$

In the next step, he cannot cancel out x^2 from the top and bottom . Because x-4 and 3x+2 are added with x^2

If we have x^2 is multiplied with other terms at the top and bottom , then we can cancel out x^2.

So Micah added the expression incorrectly. Final answer is not correct.

5 0

3 years ago

A right triangle has a leg of 11 and a hypotenuse of 16. Find the missing leg (in simplest radical form)

igomit [66]

Answer:

11^2 + b^2 = 16^2

121 + b^2 = 256

b^2 = 135

b = 3 X q(15)

Step-by-step explanation:

8 0

3 years ago

The equation of a circle whose center is at ( 4,0 ) and radius is length 2 ( square root ) 3

Vesna [10]

The equation of a circle:
$(x-h)^2+(y-k)^2=r^2$
(h,k) - the coordinates of the center
r - the radius

The center is (4,0), the length of the radius is 2√3.
$(x-4)^2+(y-0)^2=(2\sqrt{3})^2 \\
\boxed{(x-4)^2+y^2=12}$

8 0

2 years ago

Read 2 more answers