All categories

3 years ago

3x+2(6x)=15 Can you please solve for x? Thanks!

Mathematics

2 answers:

Debora [2.8K]3 years ago

6 0

Answer:

x=1

Step-by-step explanation:

6x x 2=12x + 3x = 15x

15x/15 = 15/15

x = 1

Law Incorporation [45]3 years ago

3 0

Answer:

x=1

Step-by-step explanation:

You might be interested in

A ball is thrown in the air from the top of a building. Its height, in meters above ground, as a function of time, in seconds, i

kirza4 [7]

Answer:

It would take 2 second to reach its maximum height.

The maximum height of the ball is 43.6 meters above the ground.

Step-by-step explanation:

Consider the provided function.

$h(x)=-4.9x^2+19.6x+24$

The above function's graph is a downward parabola and the maximum of the downward parabola is at its vertex.

We can find the x coordinate of the function using the formula: $\frac{-b}{2a}$

Substitute a=-4.9 and b=19.6 in $\frac{-b}{2a}$

$x=\frac{-19.6}{2(-4.9)}$

$x=\frac{19.6}{9.8}$

$x=2}$

Hence, it would take 2 second to reach its maximum height.

Substitute x=2 in above formula.

$h(2)=-4.9(2)^2+19.6(2)+24$

$h(2)=-19.6+39.2+24$

$h(2)=43.6$

Hence, the maximum height of the ball is 43.6 meters above the ground.

6 0

3 years ago

Rachel jogged along a trail that was 1/4 of a mile long. she jogged around the trail 8 times. How many mile did Rachel jogged?

Alex777 [14]

She jogged 2 miles, because 1/4 is 25%, if she ran the trail 8 times she ran the trail 1/4 * 8 which is 2 miles.

6 0

3 years ago

How would 9/25 as a percent

Over [174]

36% is the answer to the question

8 0

3 years ago

Read 2 more answers

Evaluate.

guajiro [1.7K]

Answer:

Step-by-step explanation:

23+4⋅2−7

PEMDAS

Multiply first

23+8−7

Add and subtract from left to right

31-7

4 0

2 years ago

What is the radius of a sphere if its surface area is 2,122.64 square inches? (Use 3.14 for π.) 11 in. 13 in. 121 in. 169 in.

crimeas [40]

To solve this, we are going to use the surface are of a sphere formula: $A=4 \pi r^2$
where
$A$ is the surface area of the sphere
$r$ is the radius of the sphere

We know for our problem that $A=2122.64$ and $\pi =3.14$ , so lets replace those vales in our formula:
$A=4 \pi r^2$
$2122.64=4(3.14)r^2$
$2122.64=12.56r^2$
Now, we just need to solve our equation for $r$ :
$\frac{2122.64}{12.56} =r^2$
$r^2=\frac{2122.64}{12.56}$
$r^2=169$
$r=+or- \sqrt{169}$
$r=13$ or $r=13$
Since the radius of a sphere cannot be a negative number, $r=13$ .

We can conclude that the radius of a sphere with surface area <span>2,122.64 </span> $in^2$ is 13 in.

3 0

3 years ago