How do mental math strategies help you solve problems such as the ones above?

1 answer:

7 0

With mental math, you can perform equations quickly and efficiently. They also help you to develop your own strategies and solve more complex math equations. Hope this helps;)

You might be interested in

What equation is equivalent to y+2 = -2(x-3) in slope intercept form

Temka [501]

Answer:

-x+y+5

Step-by-step explanation:

7 0

3 years ago

A path 3 m wide runs around the inside of a square park inside 60 M.FIND THE AREA OF THE PATH.pls

jok3333 [9.3K]

Answer: 180 i believe

Step-by-step explanation:

7 0

2 years ago

What is the inverse of f(x)=1.5^x+4

STatiana [176]

Answer:

Step-by-step explanation:

4 0

2 years ago

A pound of coffee beans yields 60 cups of coffee (4 cups = 1 qt). how many milliliters of coffee can be obtained from 1.0 g of c

kari74 [83]

We can easily convert grams to pounds and find that 1 g of coffee beans is 0.00220462 pounds. Now we can multiply that value with 60 cups to find how many cups it makes.

We find that it makes 0.1322772 cups.

Then we know that 236.588 milliliters are in a cup. We multiply the value of the coffee available with 1 g of coffee beans (in cups - of course) and get the value the question asked :

0.1322772 * 236.588 milliliters

The answer is 31.2951981936 milliliters!

Hope this helps!

5 0

3 years ago

Find the difference. Enter your answer in lowest terms in the box below as a

lara [203]

Answer:

76/165

Step-by-step explanation:

The difference of fractions can be found using the formula ...

a/b -c/d = (ad -bc)/(bd)

<h3>Difference</h3>

Using the given values in the formula, we have ...

$\dfrac{8}{11}-\dfrac{4}{15}=\dfrac{8(15)-11(4)}{11\cdot15}=\dfrac{120-44}{165}=\boxed{\dfrac{76}{165}}$

Here, the difference fraction does not need to be reduced. Many calculators and spreadsheets can do this arithmetic for you.

The above formula can also be used for sums of fractions. In that case, the sign changes from minus to plus.

7 0

2 years ago