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zzz [600]
3 years ago
13

Which of the following statements uses the commutative property of addition

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
5 0

Answer:

the first one

Step-by-step explanation:

The second equation doesn't make sense because that's not a true statement. The third equation uses the associative property so the answer must be the first one.

You might be interested in
A boat travels 320 miles in 11 hours (with a constant speed), How much
Arada [10]

Answer: 4.2625

Step-by-step explanation:

11/320=x/124

11*124=320x

1364=320x

x=4.2625

Hopefully I was helpful!

3 0
3 years ago
Addison's Cafe offers two kinds of espresso: single-shot and double-shot. Yesterday afternoon, the cafe sold 70 espressos in all
Valentin [98]

Answer:

The number of single-shot espressos sold by the cafe was 49.

Step-by-step explanation:

It is provided that Addison's Cafe offers two kinds of espresso: single-shot and double-shot.

Total number of espressos sold by the cafe yesterday afternoon was,

<em>N</em> = 70

The proportion of single-shot espresso sold was, <em>p</em> = 0.70.

Let <em>X</em> = number of single-shot espressos sold.

Compute the number of single-shot espressos sold by the cafe as follows:

E(X)=N\times p

         =70\times 0.70\\=49

Thus, the number of single-shot espressos sold by the cafe was 49.

6 0
3 years ago
Just #35 please piecewise functions
saveliy_v [14]

Answer: No, the friend is correct. In any function, each input value can only lead to one output value. When you input 3 for the x-values, you would get two output values because 3 is included in both equations. To fix this, you need to have the 3 not included in one of the equations.

For example, you could say y=\left \{ {{2x-2, x\leq 3} \atop {-3, x > 3}} \right. or y=\left \{ {{2x-2, x < 3} \atop {-3, x\geq 3}} \right. because the input value of 3 would not be included twice.

If you look at the attached screenshot, you will see that if you keep your friend's function, inputting 3 will result in two outputs of 4 and -3, so therefore, y=\left \{ {{2x-2,x\leq 3} \atop {-3,x\geq 3}} \right. cannot represent a piecewise function.

3 0
1 year ago
$27 for four large pizzas or $32 for five large pizzas?
diamong [38]

Answer:

$32 for five large pizzas.

Step-by-step explanation

Well, 27 ÷ 4 = 6.75 per pizzas. 32 ÷ 5 = $6.4 per pizza. For five, you pay less.

Your welcome °ω°

4 0
2 years ago
What is the value of a^2 + 3b + c - 2d, when a = 3, b = 8, c = 2, and d = 5?
alekssr [168]

Answer:

25

Step-by-step explanation:

'. a=3

b=8

c =2

d=5

so

3^2+3(8)+2-2(5).

9+24+2-10

=25

8 0
3 years ago
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