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ivanzaharov [21]
3 years ago
11

What is a real world problem that can be modeled for 4x(-7)

Mathematics
1 answer:
ozzi3 years ago
7 0

Answer:

A football player carried the ball 4 times in a game. Each time he carried the ball he got tackled 7 yards behind the line of scrimmage. How many yards did the player gain during the game ? 4(-7)=-28

I have a new credit card and the balance is zero. I go shopping in 4 stores and make 4 purchases. Each of the 4 purchases cost $7.00 and I pay for them with my new credit card. What is the balance on my credit card now after I am done shopping ? I owe the credit card company $28.00. My balance is now 4(-7)=-$28.00

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Mariela bought gas for her car. Gas costs $2.12 per gallon, and
Montano1993 [528]

Answer:

$49.82

Step-by-step explanation:

Since each gallon is $2.12 you would just do $2.12 times 23.5 which equals $49.82. So Mariela spent $49.82 on gas

5 0
3 years ago
Read 2 more answers
F(x)=2x^2-x-6 g(x)=4-x (f+g)(x)
Semenov [28]

\large  \boxed{(f + g)(x) = f(x) + g(x)}

The property above is distribution property where we distribute x-term in the function.

Substitute both f(x) and g(x) in.

\large{ \begin{cases} f(x) = 2 {x}^{2}   -  x - 6 \\ g(x) =  4 - x \end{cases}}  \\  \large{f(x) + g(x) = (2 {x}^{2}  - x - 6) + (4 - x)} \\  \large{f(x) + g(x) = 2 {x}^{2}  - x - 6 + 4 - x}

Évaluate/Combine like terms.

\large{f(x)  + g(x) = 2 {x}^{2}  - 2x - 2}

The function can be factored so there are two answers. (Both of them work as one of them is factored form while the other one is not.)

\large{(f + g)(x) = 2 {x}^{2}  -2x -2}

<u>Alternative</u>

\large{(f + g)(x) = 2({x}^{2}  -x - 1)}

<u>Answer</u>

  • (f+g)(x) = 2x²-2x-2
  • (f+g)(x) = 2(x²-x-1)

Both answers work. The second answer is in factored form.

Let me know if you have any doubts!

8 0
3 years ago
Bridget is 5 years older than Angad. Paul is 4 years younger than Angad. If the total of their
Ainat [17]

Answer: Bridge is 21 years old

Step-by-step explanation:

Ok so after reading the question I already know that B (Bridget), A (Angad) and P (Paul) is 49 in the sum of age. I also know that B=A+5 and P=A-4. After that I can assume B=P+5+4. So now after we gather everything, the age of all of them is the same if we delete 5, 4, 4 (From B=P+5+4 and P=A-4). 49-5-4-4=36. So now lets assume they are all 12 (36/3=12). B is 5 years older so lets add 5 to B. B=17, A=12 and P=8. 8+12+17= 37. We now know that but 37 is 12 under 49, so lets add the average 12/3=4 so we add 4 to all of them. B=21 A=16 P=12. 21+16+12=49. So Bridge is 21 years old, Angad is 16 years old and Paul is 12 years old

5 0
3 years ago
Consider this cone. cone Identify the parts of the cone. Which letter indicates the height? Which letter indicates the radius? W
eduard

Answer:

Step-by-step explanation:

1.B

2.C

3.D

4.A

3 0
3 years ago
What number is to be multiplied with 1/3 to get 1/21
dybincka [34]

Answer:

1/7

Step-by-step explanation:

Since we do not know the number let us use the alphabet A to represent the unknown number

A × 1/3= 1/21

A/3= 1/21

Cross multiply both sides

A×21= 3×1

21A= 3

Divide both sides by the coefficient of A which is 21

21A/21=3/21

A=1/7

Hence the unknown number is 1/7

7 0
3 years ago
Read 2 more answers
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