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Nata [24]
2 years ago
6

What is 0.4 repeating written as a fraction ​

Mathematics
2 answers:
Dimas [21]2 years ago
7 0

Answer:

0.4 as a fraction would be 2/5

Yuliya22 [10]2 years ago
4 0

Answer: 4/9

Step-by-step explanation:

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Find a and b if the points p(6,0) and q(3,2) lie on the graph of ax + by =12
s2008m [1.1K]

Answer:

a= 2

b = 3

Step-by-step explanation:

Given

p(x,y) = (6,0)

q(x,y) = (3,2)

ax + by = 12

Required

Find a and b

In p(x,y) = (6,0), x = 6 and y = 0.

This gives:

a*6 + b*0 = 12

6a = 12

Divide by 6

a= 2

In q(x,y) = (3,2). x = 3 and y = 2.

This gives:

a*3 + b*2 = 12

3a + 2b = 12

Substitute 2 for a

3*2 + 2b = 12

6 + 2b = 12

Collect Like Terms

2b = 12 - 6

2b = 6

Divide by 2

b = 3

7 0
3 years ago
The volume of a cube, in cubic centimeters, is given by the function V(x) = x3, where x is the side length of the cube in centim
Sav [38]

I think we can all agree that 1 centimeter=10millimeters.

And if x is the side in centimeters then 10x will be the side in millimeters.

We just need to rewrite x^3 into (10x)^3.

Because you need to do the exponent to all part of the ( )...

(10x)^3=1000x^3

V(x)=1000x^3 cubic millimeters is the answer

5 0
3 years ago
What is the x-intercept of y=5x+20?
densk [106]

Answer:

the x intercept is -4

Step-by-step explanation:

to find the x intercept, set y = 0 and solve for x

y = 5x+20

0 = 5x+20

subtract 20 from each side

-20 = 5x +20 -20

-20 = 5x

divide each side by 5

-20/5 = 5x/5

-4 =x


7 0
3 years ago
What is the inverse of the function f(x) = 2x + 1?
BaLLatris [955]

Answer:

f^{-1} = \frac{x-1}{2}

Step-by-step explanation:

f(x) = 2x+1

<em>Replace it with y</em>

y = 2x+1

<em>Exchange the values of  x and y</em>

x = 2y+1

<em>Solve for y</em>

x = 2y+1

<em>Subtracting 1 from both sides</em>

2y = x-1

<em>Dividing both sides by 2</em>

y = \frac{x-1}{2}

<em>Replace it by </em>f^{-1}

So,

f^{-1} = \frac{x-1}{2}

3 0
3 years ago
Read 2 more answers
What is the measure of an anglethat is supplementary to an angle of 37°? A. 127° B. 53° C. 143° D. 323°​
KengaRu [80]

<u>Answer:</u>

143°

option c is correct!

<u>Explanation:</u>

Given:

Two angles are supplementary:

One angle = 37°

We know if two angles are supplementary their sum is equal to 180°.

Let another angle be x°

= > 37° + x° = 180

= > x° = 143°

Therefore another angle is 143°.

8 0
2 years ago
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