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lana66690 [7]
3 years ago
14

guy wants to add 7,145 and 8,265 and using mental math strategies what steps could guy take to add the number is guy,s answer co

rrect explain
Mathematics
2 answers:
Marat540 [252]3 years ago
7 0

Answer:

The sum of two numbers is 15,410.

Step-by-step explanation:

We have to add two numbers using mental math trick. The numbers to be added is 7145 and 8265.

We can use the associative property of addition to solve this problem.

Associative property of addition states that:

a + (b+c) = (a+b) + c

Now,

7145 + 8265

=(7000 + 100 + 40 + 5)0 + (8000 + 200 + 60 +5)\\=(7000 + 8000) + (100 + 200) + (40 + 60) + (5+5)\\=15000 + 300 + 100 + 10\\=15410

Thus, the sum of two numbers is 15,410.

TEA [102]3 years ago
4 0
First add the biggest number like thousand together and the go in to the last numbers
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Evaluate 1/3 m- 1- 1/2 n when m=21 and n=12
liq [111]

Answer:

0

Step-by-step explanation:

First we have to identify 1/3 m. We know that m is 21 and 1/3 of 21 is 7.

Then we find 1/2 on n which we know is 12 so 1/2 of 12 is 6.

Then we subtract. 7-1 is 6 and 6-6 is 0

Hope this helped!!! :D

4 0
3 years ago
Which statement is correct?
Arisa [49]

Answer:

2.06 \times 10^-^2 = 206

1.88 \times 10^-^1 = 18.8

206 \times 18.8 = 3,872.8

7.69 \times 10^-^2 = 769

2.3 \times 10^-^5  = 230,000

=\frac{769}{230000}

= 0.00334

therefore,

3,872.80 > 0.00334

Step-by-step explanation:

Which statement is correct?

(2.06x102x1.88 x 10-1) <7.69x 10

2.3x10-5

(2.06 x 10-2)(1.88 x 10-1) 7.69x 10-

2.3x10-5

7.69 x 10"

(2.06 x 10-2x1.88x10-)>

2.3x10-5

(2.06x 10-2X(1.88x 10-1)-7.69x104

2.3x10-5

Given that;

2.06 \times 10^-^2 = 206

1.88 \times 10^-^1 = 18.8

206 \times 18.8 = 3,872.8

7.69 \times 10^-^2 = 769

2.3 \times 10^-^5  = 230,000

=\frac{769}{230000}

= 0.00334

therefore,

3,872.80 > 0.00334

7 0
3 years ago
Think about the function f(x) = 3 - 2x
Angelina_Jolie [31]

f(0) means the function output when the input is x = 0. This is the same as saying the y value when x = 0.

f(x) = 3-2x

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The point (0,3) is on the graph. This is the y intercept which is where the graph crosses the y axis. The y intercept always occurs when x = 0.

So in other words, the special name for f(0) is the y intercept.

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