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Marysya12 [62]
3 years ago
10

Katalina is solving algebraic expressions for her math homework. She solves the problem 7y -12, when y = 3. Katalina says that t

he answer is 61. Is she correct? How do you know?
Mathematics
1 answer:
Tomtit [17]3 years ago
7 0

Answer:

No

Step-by-step explanation:

Substitute 3 in for y

7y-12

7(3)-12

21-12

9

She is not correct, the correct answer would be 9

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Translating a sentence into a multi-step equation
Kryger [21]

Answer:7x-4= 3

Step-by-step explanation:

4 less than the product of 7 and a number is equal to 3.

The answer is 7x-4= 3 beacuse:

(a.  whenever you have something less than , the first number in the sentence (in this cacse 4) goes after the second number (in this case 7) with a subtraction sign in the middle. (imagine this equation looking like 7-4 <u>for now)</u>.Thats a little trick i use whenever i have to write "something less than something"

(b. okay so now we know it has to be 7 times somethig -4=3, but now we just need to write the "product of 7 and a number" in proper form. in other words, whenever you get somethig times a number, it is always going to be  that number with an x right next to it. so thats why i made it 7x.

(c. "equals 3" is easy because you just turn it into an "=3".

(d. Now put it together. "4 less than the product of 7 and a number is equal to 3." becomes 7x-4=3.

Hope this helps :)) Also brainliest would be appreciated, worked pretty hard on this ! :D

5 0
2 years ago
Recursive definitions for subsets of binary strings.Give a recursive definition for the specified subset of the binary strings.
dmitriy555 [2]

Answer:

Step-by-step explanation:

A binary string with 2n+1 number of zeros, then you can get a binary string with 2n(+1)+1 = 2n+3 number of zeros either by adding 2 zeros or 2 1's at any of the available 2n+2 positions. Way of making each of these two choices are (2n+2)22. So, basically if b2n+12n+1 is the number of binary string with 2n+1 zeros then your

b2n+32n+3 = 2 (2n+2)22 b2n+12n+1

your second case is basically the fact that if you have string of length n ending with zero than you can the string of length n+1 ending with zero by:

1. Either placing a 1 in available n places (because you can't place it at the end)

2. or by placing a zero in available n+1 places.

0 ϵ P

x ϵ P → 1x ϵ P , x1 ϵ P

x' ϵ P,x'' ϵ P → xx'x''ϵ P

3 0
3 years ago
If the sum of two whole numbers is 24 more than their difference, then one of the number must be
Iteru [2.4K]

Answer:

Option C. 12

Step-by-step explanation:

Let

x---> one whole number

y ---> the second whole number

we know that

x+y=(x-y)+24

x-x+y+y=24\\2y=24\\y=12

therefore

One of the number must be 12

5 0
3 years ago
What is the value of p? p+2−4=14
zubka84 [21]
The answer is 16 because 16+2=18-4=14
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3 years ago
Dont trust breekall indian hacker/and help please
ollegr [7]

Answer:

ok....

Step-by-step explanation:

3 0
2 years ago
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