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2 years ago

What is the percentage of 0,4(That is a decimal fraction)

Mathematics

2 answers:

erica [24]2 years ago

7 0

2 over 5

Step-by-step explanation:

0.4=4 over 10 simplify=2over5

Vikki [24]2 years ago

4 0

Answer:

0.4= 4/10= 2/5

Step-by-step explanation:

The first decimal place after the point represent the place holder "tenth's"

0.4 = 4/10

This can simply to 2/5

 

 Hope it will help:-)

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Which vectors represent the reflection of the vector across the x-axis?

andrew-mc [135]

Answer:

<3, 7> and [3 7], b and c

Step-by-step explanation:

multiply the vector by the matrix {1 0} (top row) {0 -1} bottom row. So you flip the sign of the -7 and this gives us +7.

8 0

3 years ago

"Seven subtracted from the product of a number and 4 is -59."

xenn [34]

Answer:

the unknown number is -13

Step-by-step explanation:

4n -7 = -59

4n = -59 +7

n= -52 /4

n = -13

3 0

3 years ago

**HELP ASAP PLZ ;-;**

mart [117]

Answer:

1. (x^3+7x^2+8x-16) ; domain: R (all real number)

2. (x-1) ; domain: R-(-4) {all real number except (-4)

Step-by-step explanation:

f*g= f(x) and g(x)

i.e, f*g= (x^2+3x-4)(x+4)

i.e, f*g= x^3+3x^2-4x+4x^2+12x-16

i.e, f*g=x^3+7x^2+8x-16

it's domain is R, i.e, all real number!

f/g=(x^2+3x-4)/(x+4)

i.e, f/g={(x+4)(x-1)}/4

i.e,f/g=x-1

it's domain is all real number,except the number at which (x+4) becomes 0, i.e, x= (-4), -4 is not in domain!

✌️;)

5 0

4 years ago

Can someone tell me what the answer is

katrin [286]

Answer:

Step-by-step explanation:

add together all the quatile

3 0

3 years ago

Read 2 more answers

A student has a class that is supposed to end at 9:00am and another that is supposed to begin at 9:10am. Suppose the actual endi

never [62]

Answer:

0.8340

Step-by-step explanation:

The aim of this question is to find the probability that the student makes it to the second class prior to when the lecture commences.

Provided that A, B, and C are independent of each other from the full complete question.

Then; we want P(A + C < B)

So A $\sim$ N (2, 1.5)

B $\sim$ N (10, 1)

C $\sim$ N (6, 1)

P(A + C - B < 0)

Since they are normally distributed( i.e. A + C - B)

Then;

E(A + C -B) = E(A) + E(C) - (B)

E(A + C -B) = 2 - 10 + 6

E(A + C -B) = -2

Var(A+C -B) = Var(A) + Var (B) + Var (C)

Var(A + C -B) = (1.5)² + (1)² + (1)²

Var(A + C -B) = 4.25

The standard deviation = $\sqrt{4.25}$

The standard deviation = 2.06155

$P(A+C-B) = p \Big (Z < \dfrac{0-(-2)}{2.06155} \Big )$

$P(A+C-B) = p \Big (Z \le 0.97014 \Big )$

$\mathbf{P(A+C-B) = 0.8340}$

7 0

3 years ago

What is the percentage of 0,4(That is a decimal fraction)​

What is the percentage of 0,4(That is a decimal fraction)