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MissTica
3 years ago
8

Stephen counted 17 heartbeats in 15 seconds. How many times does his heart beat in 1 minute?

Mathematics
1 answer:
blagie [28]3 years ago
6 0

Stephen's heart beats 68 times in one minute

Step-by-step explanation:

60 sec (one min) divided by 15 sec ( the unit of time we use to track the 17 heartbeats) = 4

4 times 17 =68

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17 POINTS
notsponge [240]

This problem can be solved with a series of additions and subtractions.

The starting value is 500 and we first subtract 120 because on Monday they withdrew 120 dollars which leaves us with 380 dollars.

Next, we add 50 because on Wednesday they deposited 50 dollars which results in 430.

And, If I am not mistaken, we are done because when Braxton bought their basketball ticket, they used their debt card and did not withdrew from their checking account.

So, the answer is 430 dollars.

8 0
3 years ago
If u is a unit vector, find u · v and u · w. (assume v and w are also unit vectors.) equilateral triangle
serg [7]

solution:

we know that ,

u.v = ΙuΙ ΙvΙcosθ

here,

θ =60° (since the given triangle is equilateral triangle)

u.v = ΙuΙ ΙvΙcos60°

     = 1 x 1 x 1/2

u.v = 1/2

now, u.w = ΙuΙ ΙwΙcosθ

              = ΙuΙ x cos(60x2)

u.w = -1/2


5 0
4 years ago
20 points!! Pls help me out!!
geniusboy [140]

Answer: C. J=5

Step-by-step explanation: Hope this help :D

3 0
3 years ago
4/9=w+4<br><br> solve for w.
Elina [12.6K]

Answer:

-32/9

Step-by-step explanation:

4/9=w+4

4/9-4/1=w

4-36/9=w

w=-32/9 or w=-3.56

5 0
3 years ago
Read 2 more answers
2. Write an expression using fractions to show how to determine the amount that each person will pay. Then calculate each person
Nata [24]

Answer:

Mia=0.34

Jasmine=0.18

Lia=0.25

Cleo=0.23

Step-by-step explanation:

Mia=28.47/83.90=0.34

Jasmine=14.97/83.90=0.18

Lia=20.99/83.90=0.25

Cleo=19.47/83.90=0.24

5 0
3 years ago
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