All categories

4 years ago

WILL GIVE BRAINLIST AND 21 POINTS

Mathematics

2 answers:

sweet [91]4 years ago

8 0

Answer:

1) 4/(6+4+5) = 4/15

2) incomplete data

3) 16/(12+14+16+18) = 16/60 = 4/15

= 27%

4) (1+3)/10= 4/10 = 2/5

5) 12/30 = 0.4 = 40%

zvonat [6]4 years ago

8 0

Answer:

All of those answers are correct except number 2 that one is 0.3

Step-by-step explanation:

1.) 4/15

2.) 0.3

3.) 27%

4.) 2/5

5.) 40%

You might be interested in

Solve x2 - 8x = 20 by completing the square. Which is the solution set of the equation?

Artyom0805 [142]

Answer:

{-2,10}

Step-by-step explanation:

x^2 - 8x = 20

Take the coefficient of x

-8

Divide by 2

-8/2 =-4

Square it

(-4)^2 =16

Add this to each side

x^2 - 8x+16 = 20+16

x^2 - 8x+16 = 36

The left hand side becomes( x + (-8/2) )^2

(x - 4)^2 = 36

Take the square root of each side

sqrt((x - 4)^2) =±sqrt( 36)

x-4 = ±6

Add 4 to each side

x-4+4 = 4±6

x = 4±6

x = 4+6 x = 4-6

x = 10 x = -2

3 0

4 years ago

What is -10=10(x+9) and could you tell me how to do it cause I don't understand.

timofeeve [1]

-10=10x+90
80=10x
x=80/10
x=8

4 0

3 years ago

Read 2 more answers

A number is divisible by 6 if and only if it is divisible by 3.

olga55 [171]

The answer would be D

4 0

3 years ago

Week 6<br> Please answer with clear instructions so that i can apply this to other questions

Crazy boy [7]

Answer:

Step-by-step explanation:

Gradient is the same as slope to get your answer follow this formula y2 - y1 divided x2 -x1 in this problem it will look like this

4 - (-4) /1 - (-1) =

8 / 2 =

= 4

I hope this helps!!

3 0

3 years ago

A population of mice is increasing exponentially. On Monday there were 120 mice. One month later there were 132 mice. Write a fu

den301095 [7]

Answer:

$y =120*1.1^x$

$r = 10\%$ --- Percentage increase

Step-by-step explanation:

Given

Let

$x \to months$

$y \to mice$

So, we have:

$(x_1,y_1) = (0,120)$ --- Monday

$(x_2,y_2) = (1,132)$ --- One month later

Required

The function

The function is represented as:

$y = ab^x$

In $(x_1,y_1) = (0,120)$ , we have:

$120 =a * 1$

$120 =a$

Rewrite as:

$a = 120$

In $(x_2,y_2) = (1,132)$ , we have:

$132 = a * b^1$

$132 = a * b$

Substitute $a = 120$

$132 = 120 * b$

Solve for b

$b = \frac{132}{120}$

$b = 1.1$

Recall that:

$y = ab^x$

Hence, the function is:

$y =120*1.1^x$

To get the monthly percentage increase (r), we have:

$y = a(1 + r)^x$

Compare to: $y = ab^x$

So:

$1+r =b$

Make r the subject

$r = b-1$

$r = 1.1-1$

$r = 0.1$

Express as percentage

$r = 0.1*100\%$

$r = 10\%$

8 0

3 years ago