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3 years ago

Pls help me ooo Pls it's urgent : Solve:a-(7-a)=5

Mathematics

2 answers:

Triss [41]3 years ago

5 0

Answer: a=6

Step-by-step explanation:

a-(7-a)=5

a-7+a=5

2a-7=5

2a=12

a=6 :)

SIZIF [17.4K]3 years ago

5 0

Answer:

$\Huge \boxed{a=6}$

Step-by-step explanation:

$a-(7-a)=5$

We need to isolate the $a$ variable on one side of the equation to find the value.

Distribute the negative sign.

$a-7+a=5$

Combine like terms.

$2a-7=5$

Add 7 to both sides of the equation.

$2a=12$

Divide both sides of the equation by 2.

$a=6$

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Answer:

100,000

Step-by-step explanation:

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3 years ago

Timothy creates a game in which the player rolls 4 dice. What is the probability in this game of having exactly two dice or more

devlian [24]

Answer:

B. 0.132

Step-by-step explanation:

For each time the dice is thrown, there are only two possible outcomes. Either it lands on a five, or it does not. The probability of a throw landing on a five is independent of other throws. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

Timothy creates a game in which the player rolls 4 dice.

This means that $n = 4$

The dice can land in 6 numbers, one of which is 5.

This means that $p = \frac{1}{6}$

What is the probability in this game of having exactly two dice or more land on a five?

$P(X \geq 2) = P(X = 2) + P(X = 3) + P(X = 4)$

In which

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 2) = C_{4,2}.(\frac{1}{6})^{2}.(\frac{5}{6})^{2} = 0.116$

$P(X = 3) = C_{4,2}.(\frac{1}{6})^{3}.(\frac{5}{6})^{1} = 0.015$

$P(X = 4) = C_{4,4}.(\frac{1}{6})^{4}.(\frac{5}{6})^{0} = 0.001$

$P(X \geq 2) = P(X = 2) + P(X = 3) + P(X = 4) = 0.116 + 0.015 + 0.001 = 0.132$

So the correct answer is:

B. 0.132

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3 years ago

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disa [49]

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3 years ago

If the point A (10, 4) is reflected above the line y = x. Identify the transformed point?

Nataliya [291]

The transformed point if reflected over y = x is (4, 10)

<h3>Reflection of coordinate</h3>

Reflections are transformation technique used to change the position of an image on an xy-plane.

Given the coordinate (10, 4), if this coordinate points are reflected over y =x, this shows that we will simply swap the coordinate points to have (4, 10)

Hence the transformed point if reflected over y = x is (4, 10)

Learn more on reflection here: brainly.com/question/1908648

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2 years ago

The two lines below are parallel. If the slope of the red line is 1/5 what is the slope of the green line?

alisha [4.7K]

Its 1/5.

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3 0

3 years ago

Read 2 more answers