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ad-work [718]
3 years ago
10

Ji and Layla played a game in which they scored 10 points for a correct answer and lost 20 points for an incorrect answer. Ji an

swered 7 questions correctly and 3 questions incorrectly. Layla answered 5 questions correctly and 1 question incorrectly. Who had the higher score? By how many points?
Mathematics
1 answer:
Finger [1]3 years ago
6 0

Layla had the higher score by 20 points.

Step-by-step explanation:

Given,

Points for correct answer = 10 points

Points for incorrect answer = 20 points

Loss means subtraction;

Therefore,

Total points of Ji = Correct answers*10 - Incorrect answers*20

Total points of Ji = 7*10 - 3*20

Total points of Ji = 70 - 60

Total points of Ji = 10 points

Total points of Layla = Correct answers*10 - Incorrect answers*20

Total points of Layla = 5*10 - 1*20

Total points of Layla = 50 - 20

Total points of Layla = 30 points

Difference = Points of Layla - Points of Ji

Difference = 30 - 10 = 20 points

Layla had the higher score by 20 points.

Keywords: multiplication, subtraction

Learn more about subtraction at:

  • brainly.com/question/11108818
  • brainly.com/question/11149751

#LearnwithBrainly

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chubhunter [2.5K]

Answer:

0.4 × 10 = 4

1.25 × 10 = 12.5

97.465 × 10 = 974.65

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3 years ago
Which number is rational?<br> √2<br> 10<br> 016
erica [24]
16 I think is a rational number
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3 years ago
PLEASE HELP ASAP!!!!
Setler [38]

Piecewise Function is like multiple functions with a speific/given domain in one set, or three in one for easier understanding, perhaps.

To evaluate the function, we have to check which value to evalue and which domain is fit or perfect for the three functions.

Since we want to evaluate x = -8 and x = 4. That means x^2 cannot be used because the given domain is less than -8 and 4. For the cube root of x, the domain is given from -8 to 1. That meand we can substitute x = -8 in the cube root function because the cube root contains -8 in domain but can't substitute x = 4 in since it doesn't contain 4 in domain.

Last is the constant function where x ≥ 1. We can substitute x = 4 because it is contained in domain.

Therefore:

\large{  \begin{cases} f( - 8 ) =   \sqrt[3]{ - 8}  \\ f(4) = 3 \end{cases}}

The nth root of a can contain negative number only if n is an odd number.

\large{  \begin{cases} f( - 8 ) =   \sqrt[3]{ - 2 \times -  2 \times   - 2}  \\ f(4) = 3 \end{cases}} \\  \large{  \begin{cases} f( - 8 ) =  - 2\\ f(4) = 3 \end{cases}}

Answer

  • f(-8) = -2
  • f(4) = 3
6 0
2 years ago
If each dozen cookies needs 3/4 of a bag of flour to make,how many bags of flour does grandma needs to buy if she is making 10do
stepan [7]

Answer:

7.5 flour bag

Step-by-step explanation:

we are given

flour bags need to make 1 dozen cookies=3/4

we have to find

number of flour bags for 10 dozen cookies needed =?

1 dozen cookies needed flour=3/4

and for 10 dozen cookies

we will multiply 10 on both sides

it will give

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3 years ago
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seropon [69]

Problem 37

<h3>Answer: B. 4 & 1/4 gallons</h3>

-------------------

Work Shown:

The 3/4 and 1/2 add up to (3/4)+(1/2) = (3/4)+(2/4) = 5/4 = 1&1/4

The whole part 1 is then added to the other whole parts 1 and 2 to get 1+2+1 = 4

Overall, the grand total is 4 & 1/4

An alternative way is to convert each mixed number to a decimal to get 1&1/2 = 1+1/2 = 1+0.5 = 1.5 and 2&3/4 = 2+3/4 = 2+0.75 = 2.75

Add up those decimals 1.5+2.75 = 4.25

then convert that result to a mixed number: 4.25 = 4+0.25 = 4+1/4 = 4&1/4

================================================

Problem 38

<h3>Answer: C. Cubic feet</h3>

----------------

The units for volume follow the template "Cubic _____" where you'll write "feet", "inches", "centimeters" or whatever unit you are using in the blank.

Some other examples:

* cubic miles

* cubic meters

* cubic yards

3 0
3 years ago
Read 2 more answers
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