All categories

3 years ago

Could you check my answer, whether I done it right or wrong?

Mathematics

1 answer:

Iteru [2.4K]3 years ago

4 0

your almost right check once and you wil get especially alternate angles

You might be interested in

The perimeter of a regular 6 -sided figure is 30 units, and the length of each side is x + 1 units.

iren [92.7K]

Answer:

x = 4

Step-by-step explanation:

since each side is equal to x + 1 and there are 6 sides, to get x alone, you have to subtract 1, six times from the perimeter.

1 × 6 = 6

30 - 6 = 24

then divide that by the number of sides (6)

24 ÷ 6 = 4

x = 4!

4 0

3 years ago

If a paper plane is thrown from the top of a 147-foot cliff into the water below, the height of the plane at any given time can

sasho [114]

Answer:

c. 6.5 seconds.

Step-by-step explanation:

We have been given that a a paper plane is thrown from the top of a 147-foot cliff into the water below, the height of the plane at any given time can be determined by the formula $h = -3t^2+147$ , where h is the height of the plane at t seconds.

To find the time, when plane will be at a height of exactly 20.25 feet, we will substitute $h=20.25$ in our given formula and solve for t as:

$20.25= -3t^2+147$

$-3t^2+147=20.25$

$-3t^2+147-147=20.25-147$

$-3t^2=-126.75$

$\frac{-3t^2}{-3}=\frac{-126.75}{-3}$

$t^2=42.25$

Take square root of both sides:

$t=\pm \sqrt{42.25}$

$t=\pm 6.5$

Since time cannot be negative, therefore, the plane will be at a height of exactly 20.25 feet after 6.5 seconds and option 'c' is the correct choice.

6 0

3 years ago

Help your girl asap!

Ulleksa [173]

B (2<3)and C (4+3=7) maybe

7 0

3 years ago

F(x)=√(10-3x) find the formula

Otrada [13]

Let y=f(x)
y=sqrt(10-3x)
you want to make x the subject

square both sides
y²=10-3x
3x=10-y²
x=(10-y²)/3

now replace y with x
f^-1(x)=(10-x²)/3

8 0

3 years ago

Perform the required operations on the following functions Given: f(x)= 3-x; g(x)= -2x Find g[f(x)]

N76 [4]

ANSWER

$g(f(x)) = 2x - 6.$

EXPLANATION

The given functions are;

$f(x) = 3 - x$
and

$g(x) = - 2x$

We now find

$g(f(x)) = g(3 - x)$

We plug in f(x) into g(x) to get,

$g(f(x)) = - 2(3 - x)$

We expand parenthesis to get,

$g(f(x)) = - 6 + 2x$

Or

$g(f(x)) = 2x - 6$

6 0

3 years ago