What 2 numbers whose sum is 105.7 the numbers are 19, 85.2, 533, 571, 88.2, 525, 20, 17.5, 400, 261, 20.5 ,125, 7, 23, 901, 30

1 answer:

6 0

To make it quickly we can consider only those numbers which will give us a decimal of xxx.7. There are only a few numbers like this: 85.2, 88.2, 20.5.

I tried adding 85.2 to 17.5 and it gave me 102.5 - it was close but not close enough :)

So I picked 85.2 + 20.5 = 105.7 and voila :)

You might be interested in

Darrien read 97 pages last week.Evan read pages last week.How many 8 my 6. pages did, the boys read?

const2013 [10]

I’m really confused about this

7 0

2 years ago

Solve the quadratic equation 3x²-3x-1=0? (by using the square method)

ohaa [14]

Answer:

x=1 and x=-1/3

Step-by-step explanation:

$3x^2-2x-1=0\\\\3(x^2-\frac{2}{3}x-\frac{1}{3})=0\\ \\3(x^2-\frac{2}{3}x-\frac{1}{3}+\frac{4}{9})=3(\frac{4}{9})\\ \\ 3(x^2-\frac{2}{3}x+\frac{1}{9})=\frac{4}{3}\\ \\ 3(x-\frac{1}{3})^2=\frac{4}{3}\\ \\(x-\frac{1}{3})^2=\frac{4}{9}\\ \\x-\frac{1}{3}=\pm\frac{2}{3}$

$x-\frac{1}{3}=\frac{2}{3}\\ \\x=\frac{3}{3}\\ \\x=1$

$x-\frac{1}{3}=-\frac{2}{3}\\ \\x=-\frac{1}{3}$

Therefore, x=1 and x=-1/3

8 0

2 years ago

When we rewrite an expression so that it has no grouping symbols and all of the like terms have been combined, we ___ it.

Dmitriy789 [7]

Answer:

"simplify"

Step-by-step explanation:

The notion of simplifying an expression depends on the expression. For the one offered as an example, the simplification steps required are eliminating parentheses and combining like terms.

Other possible simplification steps include combining fractions, reducing fractions, and rationalizing denominators (eliminating surds or complex numbers).

It appears the vocabulary word that is desired in the blank is simplify.

8 0

3 years ago

Read 2 more answers

Riley and Francesca both commute to work. Riley's commute on the train

makvit [3.9K]

36=-x+12
36-12=24

X=24

6 0

3 years ago

Is the answer 4 correct ?

ankoles [38]

Answer: