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2 years ago

Please help me write the expressions I'm terrible at word problems!!

Mathematics

1 answer:

guajiro [1.7K]2 years ago

3 0

Answer:

Expression: 2.89+(1.28x3) Answer: 6.73

Step-by-step explanation:

Number 1

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Explain how to find a common denominator of 3/4 and 1/5 what is a common denominator of 3/4 and 1/5 show how you can rename 3/4

Paul [167]

Answer:

Common denominator = 20

New fractions are: $\dfrac{15}{20}\ and\ \dfrac{4}{20}$

Step-by-step explanation:

Given:

The fractions are given as:

$\dfrac{3}{4}\ and\ \dfrac{1}{5}$

The denominators of the first fraction is 4 and that of the second fraction is 5.

In order to find the common denominator for 4 and 5, we have to find the least common multiple of each of the numbers.

Multiples of 4 = 4, 8, 12, 16, <u>20</u>, 24, 28,....

Multiples of 5 = 5, 10, 15, <u>20</u>, 25, 30,....

Therefore, the least common multiple of 4 and 5 is 20. So, the common denominator is 20.

Now, multiply the numerator and denominator of each fraction by the same suitable number such that the denominator becomes 20.

So, for the first fraction, 4 is in the denominator.

So, 4 when multiplied by 5 gives 20.

So, we multiply the numerator and denominator of first fraction by 5. This gives,

$\dfrac{3}{4}=\dfrac{3\times 5}{4\times 5}=\dfrac{15}{20}$

Now, for the second fraction, 5 is in the denominator.

So, 5 when multiplied by 4 gives 20.

So, we multiply the numerator and denominator of first fraction by 4. This gives,

$\dfrac{1}{5}=\dfrac{1\times 4}{5\times 4}=\dfrac{4}{20}$

Therefore, the new fractions after making the denominators same are:

$\dfrac{15}{20}\ and\ \dfrac{4}{20}$

4 0

3 years ago

What is the slope of f(x) = 2x – 3

bezimeni [28]

Answer:

Step-by-step explanation:

slope is 2 because is the coefficient is next to the variable x

6 0

3 years ago

Read 2 more answers

En una granja hay gallinas y vacas, en total uman 624. Se sabe que el numero de vacas son 36 veces mas que el numero de gallinas

BartSMP [9]

Answer:

17 R 12

Step-by-step explanation:

Hola,

en total son 624 y las vacas son 36 mas que las gallinas, vos tienes que divider 624 con 36

624÷36

6 0

2 years ago

A bag with 2 1/2 quarts of peanuts can make 2 1/6 jars of peanut butter. How many

diamong [38]

Answer:

You will need 3 6/13 quarts of peanuts to make 3 jars of peanuts butter

Step-by-step explanation:

To make this answering seamless, we make the mixed fractions into improper fractions

Hence 2 1/2 becomes 5/2

while 2 1/6 becomes 13/6

Here we are told that a bag with 5/2 quarts of peanuts can make 13/6 jars of peanuts butter

Hence, x quarts of peanuts will make 3 jars of peanuts butter

To get the value of x, what we simply need to do is to cross multiply.

Thus, we have

5/2 - 13/6

x - 3

3 * 5/2 = 13/6 * x

15/2 = 13x/6

26x = 90

x = 90/26

x = 45/13

x = 3 6/13

3 0

3 years ago

12) The length of one side of a triangle is 24 cm and the length of its hypotenuse is 40 cm. find the length of its third side.

ivanzaharov [21]

Answer:

Step-by-step explanation:

given the triangle is right triangle

c^2 = a^2 + b^2

40^2 = 24^2 + b^2

1600 = 576 + b^2

b^2 = 1024

b = 32

6 0

2 years ago

Please help me write the expressions I'm terrible at word problems!!​

Please help me write the expressions I'm terrible at word problems!!