MATHEMATICS HIGH SCHOOL

Click to see the full picture please help I don’t get this

Answers

Answer 1

Answer:

Step-by-step explanation:

$- 3(2x + 4) + 4x = 3x + 10$

or,

$- 6x - 12 + 4x = 3x + 10$

or,

$- 12 - 10 = 3x + 6x - 4x$

or,

$- 22 = 5x$

$- 22 / 5 = x$

$x = - 22 / 5 \: \: ans$

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A bag contains 135 marbles some white and some transparent. The ratio of white marbles to transparent ones is 3 : 6. How many white marbles are there?

Answers

Answer:

Number of white marbles in the bag = 45

Step-by-step explanation:

Total number of marbles in the bag = 135

Ratio of white marble to transparent ones = 3 : 6

Let number of white marbles be $=3k$

Then number of transparent marble will be $=6k$

Total number of marbles will be $=3k+6k=9k$

So we have.

$9k=135$

Dividing both sides by 9.

$(9k)/(9)=(135)/(9)$

∴ $k=15$

∴ Number of white marbles in the bag = $3k=3*15 = 45$

Final answer:

In a bag of 135 marbles with a white to transparent ratio of 3:6, there are 45 white marbles, as the ratio simplifies to 1:2. With 3 ratio parts total (2 transparent + 1 white), dividing the total marbles (135) by the total parts (3) gives 45 marbles per part, meaning there are 45 white marbles (1 part).

Explanation:

In mathematics, we can solve the problem by understanding the ratio given. A ratio of white to transparent marbles is given as 3:6. This simplifies to 1:2 meaning that for every 1 white marble, there are 2 transparent marbles.

With the total number of marbles being 135, we can divide this number by the total parts in the ratio to find the number per part. The sum of the ratio is 3 parts (1 part white + 2 parts transparent). So, we have 135 marbles ÷ 3 parts = 45 marbles per part.

Given that the ratio of white marbles is 1 part, the number of white marbles in the bag will be 1 part x 45 marbles/part = 45 white marbles.

Learn more about Ratio here:

brainly.com/question/31549749

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Write an algebraic expression for the following word phrase: the quotient of r and 12?

Answers

quotient= division so 12/r would be your answer

Final answer:

The algebraic expression for the word phrase 'the quotient of r and 12' is r/12. This represents a division operation where r is divided by 12.

Explanation:

The phrase 'the quotient of r and 12' can be translated into an algebraic expression as r/12. In this expression, 'quotient' refers to the mathematical operation of division. Hence, the expression means that the variable 'r' is divided by '12'.

Learn more about Algebra here:

brainly.com/question/24875240

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Explain how to find 40x50 using mental math

Answers

Bscically DO 4x5 which is 20
NEXT add the two zeros
NOW you have 2,000
40x50=2,000

First, do 4*5=20

Then, add two zeros...

So the answer is 2000

5. The cost of a notebook increased from $4.30 to $4.58, what is the percent increase?A 5.5%
C. 6.5%
B 6%
D. 7%

Answers

The answer is 6.5
Explanation : 1. Find out the increase number by subtracting 4.58 - 4.30 = 0.28 or 6.51%
2. Divide the increase number 0.28 by 4.30 and multiple by 100 which gives you 6.51162791 .
3. Get rid of all the numbers behind 5 and you can’t round it because 1 is too small. Which then gives you the answer 6.5 :) <3

Yesterday Lou and $12.76 selling lemonade and $4.87 selling ice pops at his stand today bought two pizzas for five dollars each how much money does he have left

Answers

Answer:

7.89

Step-by-step explanation:

Subtract on calculator bro!

Answer:

its 7.63

Step-by-step explanation:

C
- = -2
9
What is the correct answer for this problem

Answers

$(c)/(9)=-2\nc=-18$

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