Ask question

Ask question

All categories

3 years ago

11

The topic= Direct and Inverse Proportions

1 answer:

maxonik [38]3 years ago

6 0

Answer:

A) 3

B)60

C)4

Step-by-step explanation:

y = kx

36 = 12k

A)k=3

~~~~~~~~~~

b) 60

12*5

c) 4

12/3

You might be interested in

#1 plz thx!!!!!!!!!!

r-ruslan [8.4K]

We have to use pythagorean theorem. The equation is $a^{2} + b^{2} = c^{2}$ so we plug in the numbers (hypothenuse is always C in the equation) $a^{2} + 8^{2} =10^{2}$ now we solve:

$a^{2} +64=100$ Exponents

$a^{2} =36$ Subtract

a=6 Square Root

x=6 Answer

5 0

3 years ago

Factor completely 2x^2 +6x -108

never [62]

Answer:

2(x-6)(x+9)

Step-by-step explanation:

5 0

3 years ago

nekit [7.7K]

They are similar , scale factor is 3

6 0

3 years ago

Solve<br> y=-x2+2x+10<br> y=x+4

Marizza181 [45]

Y=10
explanation:
-4•2= -8
2•4=8
-8+8=0
y=10

4 0

3 years ago

There are 10 pens in a box. There are x red pens in the box. All the other pens are blue. Jack takes at random two pens from the

expeople1 [14]

The probability that one of each color is selected is $\frac{10x - x^2}{45}$

<h3>Probabilities</h3>

The probability of an event is the chances of the said event

The given parameters are:

Total = 10
Red = x
Blue = 10 - x

<h3>Calculating the required probability</h3>

The probability that one of each color is selected is calculated as follows:

$P = P(Blue) \times P(Red) + P(Red) \times P(Blue)$

So, we have:

$P = \frac{10 - x}{10} \times \frac{x}{9} + \frac{x}{10} \times \frac{10 - x}{9}$

This gives

$P = \frac{x(10 - x)}{90} +\frac{x(10 - x)}{90}$

Take LCM

$P = \frac{2x(10 - x)}{90}$

Simplify the above expression

$P = \frac{x(10 - x)}{45}$

Expand

$P = \frac{10x - x^2}{45}$

Hence, the probability that one of each color is selected is $P = \frac{10x - x^2}{45}$

Read more about probabilities at:

brainly.com/question/7965468

4 0

3 years ago