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3 years ago

You roll an 10-sided fair die. What is the probability that you roll a 7?

2 answers:

6 0

Hey there!

If you have a 10 sided die that is numbered 1/10, 7 is one side of that die. That means that there is a 1/10 chance of rolling the 7 side. You could divide that fraction out to get the percentage of this probability:

1 ÷ 10 = 0.1

0.1 × 100 = 10%

There is a 10% chance of rolling a 7.

Hope this helped you out! :-)

jenyasd209 [6]3 years ago

3 0

10 percent is the answer

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Colin invests £3500 into his bank account.

Vikki [24]

Answer: £4733.05

Step-by-step explanation:

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3 years ago

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A young sumo wrestler decided to go on a special diet to gain weight rapidly. He gained weight at a constant rate.

Fittoniya [83]

The wrestler gained 5.20 kilograms per month.

Step-by-step explanation:

Let,

x be the weight gained every month.

y be the original weight before weight gain.

According to given statement;

0.5x+y=80.6 Eqn 1

2x+y=88.4 Eqn 2

3.5x+y=96.2 Eqn 3

Subtracting Eqn 1 from Eqn 2

$(2x+y)-(0.5x+y)=88.4-80.6\\2x+y-0.5x-y=7.8\\1.5x=7.8$

Dividing both sides by 1.5

$\frac{1.5x}{1.5}=\frac{7.8}{1.5}\\x=5.20$

The wrestler gained 5.20 kilograms per month.

Keywords: linear equation, subtraction

Learn more about linear equations at:

#LearnwithBrainly

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2 years ago

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An initial number of bacteria presented in a culture is 1,000. This number triples every 30 minutes. Write a function expressing

Svetlanka [38]

Tripiling time is
$A=P(3)^ \frac{t}{r}$
t=time elapsed
r=tripling time
P=initial amount

so

$A=1000(3)^ \frac{t}{30}$
when time is measured in minutes
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8 0

3 years ago

I need this asap ty:p

Anastasy [175]

Answer:

(a) x = -2y

Step-by-step explanation:

You can tell if an equation is a direct variation equation if it can be written in the format y = kx.

Note that there is no addition and subtraction in this equation.

Let's put these equations in the form y = kx.

(a) x = -2y

y = x/-2 → y = -1/2x
This is equivalent to multiplying x by -1/2, so this is an example of direct variation.

(b) x + 2y = 12

2y = 12 - x
y = 6 - 1/2x
This is not in the form y = kx since we are adding 6 to -1/2x. Therefore, this is NOT an example of direct variation.

-2y = -3x
y = 3/2x
This follows the format of y = kx, so it is an example of direct variation.

(d) 5x² + y = 0

y = -5x²
This is not in the form of y = kx, so it is NOT an example of direct variation.

(e) y = 0.3x + 1.6

1.6 is being added to 0.3x, so it is NOT an example of direct variation.

(f) y - 2 = x

y = x + 2
2 is being added to x, so it is NOT an example of direct variation.

The following equations are examples of direct variation:

x = -2y
3x - 2y = 0

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1/3 as a decimal is roughly .333 repeating

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