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3 years ago

Solve for y 12ytd=-19 y+t

Mathematics

1 answer:

Vladimir79 [104]3 years ago

7 0

Answer:

y=t/(12dt+19)

Step-by-step explanation:

This question want us to make y the subject of formula...it involves a step by step process

Back to the question

12ytd=-19y+t

Let's start solving by asking how can we make y the subject of formula from this equation...you have to be a fast thinker

Let's continue with the solution

12ytd=-19y+t

Add 19y to both sides

12ydt+19y=t

Then factorise only from the left side and y is common to the two figures

y(12dt+19)=t

Divide both sides by (12dt+19)

y=t/(12dt+19)

Therefore the final answer is y=t/(12dt+19)

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A survey of middle school students asked if they play video games. The responses are

kow [346]

Answer:

A. 35.69%

B. 62.77%

Step-by-step explanation:

In this case, what we must do is calculate the probability supported with the data in the table.

Part A.

What is the probability that a randomly selected student is a 7th grader?

Here the total is all the students that would be the sum of all the grades, which are 325 students.

the number of 7th graders is 116, so the probability is:

116/325 = 0.3569

that is, 35.69%

Part B: What percentage of the students interviewed play Video games?

The total number of students is the same 325 and of those 204 play video games, therefore:

204/325 = 0.6277

that is, 62.77%

6 0

3 years ago

What is the value of 1/3x-3/4 when x =1/4

satela [25.4K]

Answer:

The value of 1/3x-3/4 when x=1/4 is 0.08333 repeated.

Step-by-step explanation:

7 0

3 years ago

Jeff's mother gave him money. he used an equal amount of money each day. at the end of the 7th day, he was left with 1/4 of how

skelet666 [1.2K]

Jeff received 280$ from his mother

Such questions are the simplest as it needs you to just write the conditions accordingly which then simplifies and provides you the answer.

This question can be solved using two tricks which are shown below:-

Trick 1 :

1 – 1/4 = 3/4 (used for the 1st 7 days)

1/4 – 410 (used for 8th and 9th days)

(3/4)/7 ——- (1/4 – 10)/2

(3/4) x (2/7) = 3/14 ——- (1/4 – 10)

1/4 – 3/14 = (7 – 6)/28 = 1/28 ——- 10

28/28 ——- 10 x 28 =$ 280

Trick 2 :

7 days ——- 3/4

1 day ——- 3/28

2 days ——- 6/28

6/28 ——- (1/4 – 10) = 7/28 – 410

1/28 ——- 10

28/28 ——- 10 x 28 = $280

Thus Jeff received 280$ from his mother.

Learn more about simple math here :

brainly.com/question/23678

#SPJ4

4 0

2 years ago

How many zeros are in the standard form of 10 7 write this number in standard form

vodka [1.7K]

Answer:

There are 7 zeroes in the standard form of 10⁷

The number is: 10,000,000

Explanation:

A power represents how many times this number is multiplied by itself

For example:

x² means we will multiply x by itself 2 times (x * x)

x⁵ means we will multiply x by itself 5 times (x * x * x * x * x)

The standard form of a number means the number written with no powers

Now, the given number is 10⁷

This means that:

The number is 10 multiplied by itself 7 times

10⁷ = 10 × 10 × 10 × 10 × 10 × 10 × 10 = 10000000 .........> standard form

We can observe that it has 7 zeroes

Hope this helps :)

8 0

3 years ago

Simplify the expression. 9y^2−25/9y^2−30y+25

mezya [45]

Answer:

Step-by-step explanation:

56y^2/9-30y+25

4 0

2 years ago