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3 years ago

4x+15=75 in a number line

Mathematics

1 answer:

Dennis_Churaev [7]3 years ago

7 0

Answer:

x= 15

Step-by-step explanation:

4x+15=75

4x = 60

x = 15

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What is the value of x? 6.75+3/8x=131/4<br> 1. 2 7/16<br> 2. 171/3<br> 3. 18 2/3<br> 4. 531/3

Arte-miy333 [17]

$6.75+\frac{3}{8}x=13\frac{1}{4}\\\\ 6\frac{3}{4}+\frac{3}{8}x=13\frac{1}{4}\\\\ \frac{3}{8}x=13\frac{1}{4}-6\frac{3}{4}\\\\ \frac{3}{8}x=12\frac{5}{4}-6\frac{3}{4}\\\\ \frac{3}{8}x=6\frac{2}{4}\\\\x=\frac{13}{2}\cdot\frac{8}{3}\\\\x=\frac{52}{3}\\\\ x=17\frac{1}{3}$

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4 years ago

if 3/4 gallon of paint covers 1/4 of a wall in luna's bedroom, how much pain does she need to cover ONE wall?

solmaris [256]

Answer:

3 gallons to cover one wall

Step-by-step explanation:

3/4 gallon = 1/4 wall

3/4 X 4 = 1/4 x 4

3 gallons to cover one wall

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3 years ago

When you divide a whole number by a decimal less than 1, the quotient is greater than the whole number. Why?

lyudmila [28]

Because division is repeated subtraction.

For example: "10 divided by 2" means "How many times can you
subtract 2 from 10 before the 10 is all gone ?".

When you divide a whole number by ' 1 ', you're trying to find out
how many times you can subtract ' 1 ' from the whole number.
Of course, the answer is the whole number itself.

Now, when you divide a whole number by a piece less than ' 1 ',
you're trying to find out how many times you can take a piece of ' 1 '
away from the whole number. Of course THAT will be more times
than the whole number itself.

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3 years ago

What is the domain of the given function? {(3, –2), (6, 1), (–1, 4), (5, 9), (–4, 0)}

jekas [21]

Answer: {x | x = –4, –1, 3, 5, 6}

Step-by-step explanation:

The domain is the set of x values, which is 3, 6, -1, 5, and -4 in this case.

6 0

2 years ago

45 + 54 = 99 times ( ) + ( )

Pani-rosa [81]

a) You have to find the greatest common factor for the values 45 and 54

To do so you have to determine the factors for each value and determine the highest value both numbers are divisible for.

Factors of 45 are

1, 3, 5, 9, 15, 45

Factors of 54 are

1, 2, 3, 6, 9, 18, 27, 54

The greatest common factor is 9, this means that you can divide both numbers by 9 and the result will be an integer:

$\frac{45}{9}=5$ $\frac{54}{9}=6$

b) Given the addition

$45+54$

You have to factorize the adition using the common factor.

That is to "take out" the 9 of the addition, i.e. divide 45 and 54 by 9 and you get the result (5+6) but for this result to be equvalent to the original calculation, you have to multiply it by 9

$45+54=9(5+6)$

4 0

2 years ago