All categories

2 years ago

In 20 years charles will bevthree time as old as he is now. how old is he now?

1 answer:

7 0

Answer:

10

Explanation:

Make our unknown equal to x, in this case his current age.

In 20 years he will be three times as old as he is now, in other words:

x + 20 = 3x

Now solve the equation:

20 = 3x - x
20 = 2x
10 = x

You might be interested in

PLEASE HELP I GIVE ALL MY POINTS PLZZZZ!!!!! Select the correct answer. Vector u has its initial point at (1, -12) and its termi

dimulka [17.4K]

Answer:

Vector u has u_x = (5 - 15) = -10, and u_y = -4 - 22 = -26, and its component form would be u = -10i - 26j.

If vector v is in the opposite direction: 10i + 26j

And if it is double in magnitude: v = 20i + 52j

Hope this helps you! Ask me anything if yu have any quistions!

6 0

2 years ago

Let f(x) = x2 − 16. Find f−1(x)

Yanka [14]

Answer:

$f^{-1}(x)=\pm\sqrt{x+16}$

Step-by-step explanation:

$f(x)=x^2-16$

To find the inverse of this function, temporarily the f(x) with a y (or whatever else you want) and then solve for the x.

$y=x^2-16\\y+16=x^2\\x=\pm\sqrt{y+16}$

Now, you can swap the variables again and write the function.

$f^{-1}(x)=\pm\sqrt{x+16}$

3 0

2 years ago

Find the difference for the subtraction 7.211- 5.24

Serhud [2]

Answer:

1.971

Step-by-step explanation:

7.211 - 5.24 = 1.971

4 0

2 years ago

Read 2 more answers

What is the value of t?

tresset_1 [31]

Answer: attached 47 degrees

Step-by-step explanation:

There is three inner triangles the total angle is 540 or 180*3 see comment

3 0

3 years ago

PLS HELP! WILL GIVE BRAINLIEST!

OLga [1]

Answer:

the 4th one

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers