All categories

2 years ago

Give an example of an addition problem in which you would and would not group the addends differently to add

1 answer:

8 0

Changing the grouping of the addends should not change the sum, according to the associative property of addition. You might group them differently with (50 + 3) + 47, so that you have 50 + (3 + 47). You might not regroup them with (16 + 4) + 5 rather than 16 + (4 + 5).

You might be interested in

Factoring trinomials

Tcecarenko [31]

$c^2$ $2c^2 + 13c +21 \\4c^2 + 13(2)c + 42\\(2c + 6)(2c+7)\\(c+3)(2c+7)$

This is a way to factoring trinomials (there exist different equivalent methods).

Multiply the trinomial but the term accompanying $c^2$ . This is the second line. Then, you could take the square of the $4c^2$ , ant try to create a factor () () that will correspond to the expression in the second line. That is, we want $4c^2 + 13(2) c + 42 = (2c + ?) (2c + ?)$

In ? we put the corresponding numbers that, if we multiply them we will obtain 42, and if we add them we will obtain 13. This numbers are 6 and 7. Then, we have $(2c + 6) (2c +7)$

The last step is divide by the number that we multipy in the first step.

4 0

3 years ago

What is the surface area of this design?

vichka [17]

Answer:

280in

Step-by-step explanation:

10×6=60

60×2=120

6×10=60

4×4=16

16×2=32

4×6=24

4×4=16

6×6=36

120+60+32+24+16+36=280

4 0

3 years ago

Candice is taking a group nature hike in a park. There is a

slavikrds [6]

Answer:

500 miles

Step-by-step explanation:

81-11 is 70. 70 divided by .14 is 500 so that's 500 miles she can bike.

8 0

2 years ago

Read 2 more answers

Shania drove on the interstate for 310 miles without stopping. If she traveled at a constant rate and the trip took her 5 hours,

sp2606 [1]

Answer:

62 miles per hour/62 mph

Step-by-step explanation:

Shania drives at a CONSTANT rate, which means in the 5 hours it took her to drive, each hour she drove the same amount.

So we need to do 310 miles in 5 hours, which is:

310/5

Solving this, we get:

The answer is 62 miles per hour.

Happy learning!

4 0

3 years ago

Read 2 more answers

Please help me with this problem i give brainiest.

Rus_ich [418]

Answer:

This is the answer in dollar

35x+9<=310

8 0

2 years ago