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Liula [17]
3 years ago
14

a physical trainer measures her heart rate and counts that it beats 30 times in 15 seconds. what is the unit rate for her heart

beat? please help
Mathematics
1 answer:
nikitadnepr [17]3 years ago
3 0
The unit rate is 2 beats per second.


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Does -2(z+3)-z=-z-4(z+2) have one,zero or infinite solutions
Andrew [12]

Hello from MrBillDoesMath!

Answer:

One solution (z = -1)

Discussion:

-2(z+3)-z=-z-4(z+2)        =>

-2z -6 -z = -z -4z - 8       =>

-3z -6 = -5z -8                =>  add 6 to both sides

-2z = -5z -2                     => add 5z to both sides

3z = -5z +5z -3               =>

3z = -3                            =>

z = -1

Thank you,

MrB

6 0
3 years ago
What is the LCM of 6, 12 and 15
Wewaii [24]
3 is the least common multiple
8 0
3 years ago
Read 2 more answers
2(4 – 16) – (–30) 2(–12) – (–30) 24 – (–30) 54
VLD [36.1K]

Step-by-step explanation:

2(4 – 16) – (–30) 2(–12) – (–30) 24 – (–30) 54= 2×4-2×16 -×-30×2×-12-×-30×24-×-30= 8-32+30-24+30×24+30: 732

3 0
3 years ago
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given an existing function: f(x)=0.5(x-2)2+3, what transformstiins would have to be made to result in g(x)=-2(x+3)2 -1?
eimsori [14]

Answer:

  • vertical scaling by a factor of -4
  • horizontal translation 5 units left
  • vertical translation 11 units up

Step-by-step explanation:

We notice that the multiplier of the squared term in f(x) is 0.5; in g(x), it is -2, so is a factor of -4 times that in f(x).

If we scale f(x) by a factor of -4, we get ...

  -4f(x) = -2(x -2)² -12

In order for the squared quantity to be x+3, we have to add 5 to the value that is squared in f(x). That is, x -2 must become x +3. We have to replace x with (x+5) to do that, so ...

  (x+5) -2 = x +3

The replacement of x with x+5 amounts to a translation of 5 units to the left.

We note that the added constant after our scaling changes from +3 to -12. Instead, we want it to be -1, so we must add 11 to the scaled function. That translates it upward by 11 units.

The attached graph shows the scaled and translated function g(x):

  g(x) = -4f(x +5) +11

5 0
3 years ago
M=72-0.75n can anyone explain how i can find both m and n plz
kari74 [83]

Answer:M is M=-0.75 and +72 and N is n= -1.3M+96

Step-by-step explanation:

5 0
2 years ago
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