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3 years ago

Find the value of X 72 (x +4)

Mathematics

1 answer:

allsm [11]3 years ago

4 0

Answer:

72x + 288

Step-by-step explanation:

You would multiply 72 with (x + 4), which would leave you with 72x + 288. The value of x would be 72 i think

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How to solve this and the steps you took

mr Goodwill [35]

Answer:

n = 16

Step-by-step explanation:

Step 1: Cross multiply

6(n - 7) = 2(2n - 5)

Step 2: Distribute

6n - 42 = 4n - 10

Step 3: Subtract 4n on both sides

2n - 42 = -10

Step 4: Add 42 to both sides

2n = 32

Step 5: Divide both sides by 2

n = 16

5 0

3 years ago

How do you find the equality of 4/12=A/3

Rama09 [41]

Answer:

A = 1

Step-by-step explanation:

$frac. \: \frac{4}{12} = \frac{a}{3}$

$\frac{ \: \: \: 4 \: \div \: x \: = \: a}{12 \: \div \: x \: = \: 3}$

$\frac{ \: \: 4 \: \div \: x \: = \: a}{12 \: \div \: 4 \: = \: 3}$

$\frac{ \: \: 4 \: \div \: 4 \: = \: a}{12 \: \div \: 4 \: = \: 3}$

$\frac{ \: \: 4 \: \div \: 4 \: = \: 1}{12 \: \div \: 4 \: = \: 3}$

$a= 1$

5 0

3 years ago

6 is what percent of 24

iren2701 [21]

Answer:

Step-by-step explanation:

Convert fraction (ratio) 6 / 24 Answer: 25%

3 0

4 years ago

Read 2 more answers

Exercise 2.64. On a test there are 20 true-or-false questions. For each problem the student (a) knows the answer with probabilit

ale4655 [162]

Answer:

$\left(p+\dfrac{p}{2}\right)^{19}\left(20-19p-\dfrac{19r}{2}\right)$

Step-by-step explanation:

Let the probability that he gets the correct answer be m.

If he gets the answer, then either he knows it (a probability of p) or he does not know it but guesses correctly (r × 1/2). Therefore,

$m = p + \dfrac{r}{2}$

Let the probability that he gets the incorrect answer be n. Then, by being complementary events

$n=1-m =1 - p - \dfrac{r}{2}$

This is a binomial or Bernoulli distribution since he gets the answer either correctly or incorrectly. The probability of at least 19 correct answers out of 20 is the sum of the probabilities of 19 or 20 correct answers.

$P(\gt19) = P(19) + P(20)$

$P(\gt19) = \binom{20}{19}m^{19}n^1 + \binom{20}{20}m^{20}$

$P(\gt19) = 20\left(p + \dfrac{r}{2}\right)^{19}\left(1 - p - \dfrac{r}{2}\right) + \left(p + \dfrac{r}{2}\right)^{20}$

$= \left( p + \dfrac{r}{2}\right)^{19}\left(20\left(1 - p - \dfrac{r}{2}\right)+p + \dfrac{r}{2}\right)$

$P(\gt19) = \left(p+\dfrac{p}{2}\right)^{19}\left(20-19p-\dfrac{19r}{2}\right)$

3 0

4 years ago

{15×115-(-3)}(4-4)÷3{5+(-3)×(-6)} simplify the expressions <br>

Lena [83]

Answer:

Step-by-step explanation:

Alright, so we all know that the order is { [ ( ) ] } right?

1. { }

2. [ ]

3. ( )

Those are the IMPORTANT orders!

So first, 15 x 155 is 2325, and - and - is a +.

The first part is 2328, ( 2325 + 3 ).

The second part is 4-4 ÷ 3, don't forget, PEMDAS!

Prentices

Exponents

Multiplication

Division

Addition

Subtraction

So no, you will not divide 4 and 3 first.

First, do 4 - 4 which is 0.

And then 0 ÷ 3 which is 0.

The third part is 3 { 5 + ( - 3 ) x ( - 6 ) }

The outside 3 means that we will multiply after we get the answers.

But first, -3 x -6 is 18 because - and - is +.

Now, 5 + 18 which is 23.

3 times 23 is 69!

The fourth part is really easy, just add them all up!

2328 x 0 + 69

And lastly, we know that the answer is 0.

6 0

3 years ago