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Tpy6a [65]
3 years ago
15

You lose three points each time you answer a question incorrectly in a trivia game. If you answer eight questions in a row incor

rectly , what is the change in your score ?
Mathematics
1 answer:
ella [17]3 years ago
8 0

Answer:

The change should be -24 points

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A square mirror has sides measuring 2 ft less than the sides of a square painting. If the difference between their areas is 32 f
kari74 [83]

Answer:  The side lengths of mirror and painting are 7 ft and 9 ft respectively.

Step-by-step explanation:  Given that a square mirror has sides measuring 2 ft less than the sides of a square painting and the difference between their areas is 32 ft.

We are to find the lengths of the sides of the mirror and the painting.

Let x ft represents the length of the side of mirror. Then, the side length of square painting is (x+2) ft.

According to the given information, we have

\textup{area of painting}-\textup{area of mirror}=32\\\\\Rightarrow (x+2)^2-x^2=32\\\\\Rightarrow x^2+4x+4-x^2=32\\\\\Rightarrow  4x=28\\\\\Rightarrow x=\dfrac{28}{4}\\\\\Rightarrow x=7.

Therefore, the side length of mirror is 7 ft and the side length of painting is (7+2) = 9 ft.

Thus, the side lengths of mirror and painting are 7 ft and 9 ft respectively.

5 0
3 years ago
7 points!!!! hep help help 2. When you are converting a decimal to a fraction, how do you know what to use as the denominator?
vitfil [10]

Step-by-step explanation:

Check to see if there is a number before (to the left of) the decimal. If there is, this number is the whole number of the fraction. So, 3 is the whole number. Place the number that falls after (to the right of) the decimal in the numerator; then use the decimal placement to determine the denominator.

3 0
3 years ago
A soup recipe calls for 6 cups of broth a chef will triple this recipe he wants to know how many quarts of broth he will need
Vikki [24]

Answer: 4.5 quarts

Step-by-step explanation:

8 0
3 years ago
A wildlife photographer photographs a crocodile and then paddles against a river current for 6 km. Then, hoping to photograph a
Angelina_Jolie [31]

Answer:

5 or 6

Step-by-step explanation:

So I did it in a different way than shown in rsm classes. I said that the speed was x-2 and x.

then I said the distance was 6 and 15. If the time taken was 1 hour more, then we can come up with this equation:

Since the time is 6/x-2 or 15/x

15/x-6/x-2=1

multiply everything to get a common denominator then cancel it out to get

(15x-30)-6x=x^2-2x

11x-30=x^2

x^2-11x+30=0

(x-5)(x-6) is factored form.

so x=5 or x=6. this means that the speed of the boat is either 5km/h or 6 km/h

6 0
2 years ago
List the sets that -6 belongs to: whole numbers, integers, rational numbers, irrational numbers, and real numbers.
goldfiish [28.3K]

Answer:

Whole Number : 6

Integers: -6 and 6

Rational Number: -6.0 and -6/1

Irrational Number: -Infinity  or  -0


8 0
3 years ago
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