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Wewaii [24]
3 years ago
11

Contestants in a dance-a-thon rest for the same amount of time every hour. A couple rests for 15 minutes in 3 hours. How long di

d they rest in 7 hours?
Mathematics
1 answer:
motikmotik3 years ago
3 0

Answer:

35 Minutes

Step-by-step explanation:

15 minutes divided by 3 hours = 5 minutes an hour

7 x 5 = 35

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The midpoint of AB is M (2,0). If the coordinates of A are (7, -2), what
Lubov Fominskaja [6]

Answer:

The coordinates of point B are (-3,2)

Step-by-step explanation:

we know that

The formula to calculate the midpoint between two points is equal to

M(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})

we have

M(2,0)\\(x_1,y_1)=(7,-2)

substitute

(2,0)=(\frac{7+x_2}{2},\frac{-2+y_2}{2})

Find the value of x_2

we have that

2=\frac{7+x2}{2}

4=7+x_2\\x_2=-3

Find the value of y_2

we have that

0=\frac{-2+y_2}{2}

0=-2+y_2\\y_2=2

therefore

The coordinates of point B are (-3,2)

5 0
3 years ago
Is 23/100 a rational number
Anna35 [415]

Answer:

YES

Step-by-step explanation:

A rational number is a number that can be expressed as the quotient or fraction p/q of two integers

- 23 and 100 are both integers

- 23 / 100 = 0.23 which is not a continious decimal

5 0
2 years ago
Read 2 more answers
PLLLSSS HURRRYYY
tester [92]

Answer:

  • y = 55x
  • y = 46x +45

Step-by-step explanation:

A. The regular cost is 55 per person. Using the given variable definitions, that cost can be expressed as ...

  y = 55x

__

B. The party special cost is 46 per person, with an added fee of 45. That cost can be expressed as ...

  y = 46x +45

_____

As you know, the cost of a purchase is the product of the cost of an item and the number of items. Here, the cost of entry is the cost of the item of interest, and the number of persons needing entry is the number of items. The party special has the addition item of a private room, so its cost is added to the total for the party special.

5 0
3 years ago
Which can be multiplied?
elena55 [62]

Answer:

  B)  BD

Step-by-step explanation:

The number of columns of the first matrix (2nd dimension) must match the number of rows of the second matrix (1st dimension). When you write the dimensions together, the two middle numbers must be the same.

AB ⇒ (3x2) × (3x5) . . . . 2 ≠ 3, so cannot be multiplied

BD ⇒ (3x5) × (5x7) . . . . 5 = 5, so can be multiplied

CD ⇒ (2x3) × (5x7) . . . . 3 ≠ 5, so cannot be multiplied

DD ⇒ (3x5) × (3x5) . . . . 3 ≠ 5, so cannot be multiplied

8 0
3 years ago
How do you write 8.11 as an improper fraction
Gre4nikov [31]
8.11 as an improper fraction is 811 over 100 811/100 if you convert
6 0
3 years ago
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