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Papessa [141]
3 years ago
6

Derek is working out in order to be in shape for the upcoming football season. He does cardio exercises and strength training. E

ach hour he spends doing cardio burns 200 calories and each hour he spends doing strength training burns 100 calories. Derek's coach recommends that he spend more than twice as much time doing cardio exercises as he does doing strength training.
Mathematics
1 answer:
Serjik [45]3 years ago
7 0

Answer:

what is the question you only gave the problem

Step-by-step explanation:

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Help me!!!!!!!!!!! Help help help
kakasveta [241]

Answer:

5 × \frac{1}{100}

Step-by-step explanation:

4*100+2*10+3*1+6*\frac{1}{10}+x+9*\frac{1}{1000}=423.659\\4*100+2*10+3*1+6*0.1+x+9*0.001=423.659\\400+20+3+0.6+x+0.009=423.659\\423.609+x=423.659\\x=0.05\\\\50*\frac{1}{10}=5\\\\5*\frac{1}{100}=0.05\\\\50=50\\\\5*0.05=0.25

8 0
3 years ago
Use elimination to solve each system of equations<br> 2x-y=-1<br> 3x-2y=1
mixer [17]
2x-y=-1 \ \ \ |\times (-2) \\&#10;3x-2y=1 \\ \\&#10;-4x+2y=2 \\&#10;\underline{3x-2y=1 \ \ \ \ } \\&#10;-4x+3x=2+1 \\&#10;-x=3 \ \ \ |\times (-1) \\&#10;x=-3 \\ \\&#10;2x-y=-1 \\&#10;2 \times (-3)-y=-1 \\&#10;-6-y=-1 \ \ \ |+6 \\&#10;-y=5 \ \ \ |\times (-1) \\&#10;y=-5 \\ \\&#10;\boxed{(x,y)=(-3,-5)}
8 0
4 years ago
Read 2 more answers
Two kinds of tickets to an outdoor concert were sold: lawn tickets and seat tickets. Less than 400 tickets in total were sold. L
miskamm [114]

Answer:

Tickets to sit on the bench (b) = 150

Tickets to sit on the lawn (l) = 200

Step-by-step explanation:

Tickets to sit on a bench (b)cost $75 each.

Tickets to sit on the lawn (l) cost $40 each

350 tickets had been sold

$19,250 had been raised through tickets sales

This forms a simultaneous equation:

b + l = 350 ... (i)

75b + 40l = 19,250 ... (ii)

Multiplying (i) by 40 and (ii) by 1 we get;

40b + 40l = 14,000 ... (i)

75b + 40l = 19,250 ... (ii)

Subtracting (ii) - (i) we get;

35b = 5250

b = 5250 ÷ 35 = 150

7 0
3 years ago
Can someone help me with this question please?
blagie [28]

Answer:

  a) 96 = 3.57√h

  b) h ≈ 723.11 m

Step-by-step explanation:

<h3>a)</h3>

The equation you want to solve is the model with the given values filled in.

  D(h) = 3.57√h . . . . model

  96 = 3.57√h . . . . . equation for seeing 96 km to the horizon

__

<h3>b)</h3>

We solve this equation by dividing by the coefficient of the root, then squaring both sides.

  96/3.57 = √h

  h ≈ 26.891² ≈ 723.11 . . . . meters above sea level

Dustin would need to have an elevation of 723.11 meters above sea level to see 96 km to the horizon.

8 0
2 years ago
Please help me on these questions and explain it thanks
Korolek [52]
ABC = 180-120=60
ACB = 180-(40+60)=80
Therefore ECD= 80 as ACB and ECD are vertically opposite angles

the solution is A as that is where the graphs intersect each other
6 0
4 years ago
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