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grin007 [14]
3 years ago
10

Simplify this expression: 13 + (–12) – (–5) = ? A. 30 B. –30 C. –6 D. 6

Mathematics
2 answers:
ElenaW [278]3 years ago
8 0
D.) 6 

because (-12) - (-5) = 7

13+ -7= 6
Ad libitum [116K]3 years ago
4 0
13 + (-12) - (-5) \\ \\ 13 - 12 + 5 \\ \\ 6 \\ \\ Answer: \fbox {6}
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2, 8, 32, 128<br> what is the sequence?
vovikov84 [41]
You multiply each by four to get the next number.

2*4=8
8*4=32
32*4=128

The next one in sequence would be 512. Since 128*4=512
6 0
4 years ago
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Which reaction displays an example of an Arrhenius base?
vekshin1

Answer:

NaOH(s) --> Na+(aq) + OH–(aq)

Step-by-step explanation:

A basis of Arrhenius is a substance that, when dissolved in an aqueous solution, increases the concentration of hydroxide, or OH-, ions in the solution.

So the answer is :

NaOH(s) --> Na+(aq) + OH–(aq)

8 0
4 years ago
Martin has a total of 19 nickels (50.05) and dimes ($0.10) worth $1.65. How many of each type of coin does he have?
mezya [45]

Answer: 19nickels and 7dimes.

Ps i really don’t know where the 50.05 came from if it is suppose to be there then I really don’t know how to solve this.

Step-by-step explanation:

Ok so if you know that there are 19nickels, let n=number of nickels.

The number of total coins subtracted by number of nickels will give you number of dimes.

165-number of nickels=number of dimes

Value of dimes=10(number of dimes) or total value of dimes/individual value (10cent)

Then you can substitute total as $1.65 and get the value of nickels by multiplying by 5cent ( my teacher taught me using whole numbers to make it easier so I turned $1.65 to 165 cent). Since the value of the dimes is the value of nickels subtracted from the total, I can subtract 95 from 165 and divide the difference by 10, to get the number of dimes.

5(n)=5(19)=95

(165-95)/10=number of dimes

70/10=7dimes

You can check by multiplying 7x10 and 5x15 again and adding them together to see if they equal 165 cent.

4 0
3 years ago
MP2 Reasoning Joel is 23 inches
Marta_Voda [28]

Answer: 576 inches

Step-by-step explanation:

Carlos’ height :587+12=599

Joel’s height: 599-23=576

:)

4 0
4 years ago
Read 2 more answers
Which explains why the sequence 216, 12, 2/3 is arithmetic or geometric.
DiKsa [7]
C, because every time you multiply the preceding number by 1/18, you get the next number in the sequence. It's not D, because an arithmetic sequence would be 216-1/18 (a difference of 1/18) rather than it decreasing by a factor.
6 0
4 years ago
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