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alexandr1967 [171]

3 years ago

9

Lori bought a shirt and a hat at a half off sale. If she spent a total of $21 on the two items, what was the original price of t

he hat ?

1 answer:

Bad White [126]3 years ago

6 0

Do 21 divided by 2 and you’ll get 10.5 so the original price was $10 and 50 cents

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Nastasia [14]

Answer:

D) m=1/2

Step-by-step explanation:

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3 years ago

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When you are finding a percent of a number or price, you need to convert the percent to a

r-ruslan [8.4K]

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decimal

Step-by-step explanation:

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3 years ago

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Which equation represents the circle described?

faust18 [17]

ANSWER

${(x - 4)}^{2} + {(y - 3)}^{2} = {2}^{2}$

EXPLANATION

The equation of the circle with radius r and centre (a,b) is given by

$(x - a)^{2} + {(x - b)}^{2} = {r}^{2}$

The radius is

$r = 2$

We need to determine the center of the circle from the given equation of another circle, which is,

${x}^{2} + {y}^{2} - 8x - 6y + 24 = 0$

We complete the square to obtain,

${x}^{2} - 8x+ {y}^{2} - 6y + 24 = 0$

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${x}^{2} - 8x+ {( - 4)}^{2} + {y}^{2} - 6y + {( - 3)}^{2} = - 24 + {( - 3)}^{2} + {( - 4)}^{2}$

${(x - 4)}^{2} + {(y - 3)}^{2} = - 24 + 9+ 16$

${(x - 4)}^{2} + {(y - 3)}^{2} = 1$

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Hence the center of the circle whose equation we want to find is also (4,3).

With this center and radius 2, the required equation is,

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Therefore the correct answer is C.

3 0

3 years ago

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Suponha que uma variável assume os valores: 11 – 8 – 7 – a – 16 – 10 Determine a de modo que a média aritmética seja igual 11.

Elenna [48]

Answer:

a = 14

Step-by-step explanation:

The mean is the sum of the values divided by the number of values.

$\begin{array}{rcl}\text{Mean}&= &\dfrac{11 + 8 + 7 + a + 16 + 10}{6}\\\\\dfrac{52 + a}{6}& = & 11\\52 + a & = & 66\\a & = & 66 - 52\\& = & \mathbf{14}\\\end{array}$

4 0

3 years ago

Amanda teaches all of the bass and viola students. All of her classes have the same number of students. Each class has the great

alexandr402 [8]

Answer:

5 classes - 2 bass classes and 3 viola classes.

Step-by-step explanation:

Find the greatest common factor (GCF)

List the factors of 20 and 30:

20: 1, 2, 4, 5, 10, 20

30: 1, 2, 3, 5, 6, 10, 15, 30

The greatest factor that both numbers share is 10.

Therefore, there are 10 students in each class. So, she teaches 2 bass classes and 3 violas classes.

hope this helps! <3

6 0

1 year ago