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3 years ago

What is 2/5 written as a decimal?

Mathematics

2 answers:

Molodets [167]3 years ago

7 0

B) 0.4 is 2/5 because 2/5 is 40%

muminat3 years ago

3 0

0.4 is your correct answer

You might be interested in

A) Let f(x) = 4x + 2 and g(x) = 2x^2-4. Find the formula for the composition function gof

ollegr [7]

Answer:

g o f = $g(f(x)) = 32x^2 + 32x + 4$

Step-by-step explanation:

Given

$f(x) = 4x +2$

$g(x) =2x^2 - 4$

Required:

Find g o f

This is calculated as:

$gof = g(f(x))$

$g(x) =2x^2 - 4$

So:

$g(f(x)) = 2(4x+2)^2 - 4$

$g(f(x)) = 2(4x+2)(4x+2) - 4$

$g(f(x)) = 2[ 16x^2 + 16x + 4)] - 4$

$g(f(x)) = 32x^2 + 32x + 8 - 4$

$g(f(x)) = 32x^2 + 32x + 4$

5 0

3 years ago

(x+2y = 10 16y=-3x+30

Harlamova29_29 [7]

Answer:

x = 10, y = 0

Step-by-step explanation:

x + 2y = 10

x = 10 - 2y (Bring the 2y to the right)

16y = -3x + 30

16y = -3(10 - 2y) + 30 (Substitute x to 10 - 2y)

16y = -30 + 6y + 30 (Expand brackets)

10y = 0 (Bring y to the left)

y = 0

x = 10 - 2(0) (Substitute y = 0)

x = 10

x = 10, y = 0

7 0

3 years ago

The function f(x) = -3/4x^2 +9/2x models, in feet, the shape of a doorway arch on a historic building. How high is the

slamgirl [31]

Is has to be 7.25 feet.

3 0

3 years ago

What is the measure of arc BC? 130 65 32.5 180

ale4655 [162]

Answer:

The measure of arc BC is 130° ⇒ 1st answer

Step-by-step explanation:

In a circle:

The measure of an arc is equal to the measure of the central angle subtended by it
The measure of an arc is equal to double the measure of the inscribed angle subtended by it
Central angles subtended by the same arc are equal in measures
Inscribed angles subtended by the same arc are equal in measures
The measure of central angle is double the measure of the inscribed angle which subtended by its arc

∵ Angle BDC is an inscribed angle

∵ It is subtended by the arc BC

- By using the 2nd fact above

∴ The measure of arc BC = 2 × the measure of ∠BDC

∵ The measure of angle BDC is 65 degree

∴ The measure of arc BC = 2 × 65°

∴ The measure of arc BC = 130°

The measure of arc BC is 130°

7 0

3 years ago

Ron flies his airplane 20 km over the ground. He gains 800 m in altitude over the flight. What is the slope of the line segment

mrs_skeptik [129]

Answer:

this might help.......

Step-by-step explanation:

...

3 0

2 years ago