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2 years ago

On Tuesday morning Tori went running for 40 minutes.

Mathematics

1 answer:

lana66690 [7]2 years ago

7 0

Answer:

Step-by-step explanation:

40min(529kcal/30min)=705.33kcal

So she is correct in saying she used more than 700 kcal

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(y+3):(y+5)=k:1 show that y=(5k-3)/(1-k) hence y=(5k-2)/(1-k)

luda_lava [24]

hi,

Express the ratios in fractional form, that is

= ( cross- multiply )

y + 3 = k(y + 5) ← distribute

y + 3 = ky + 5k ( subtract ky from both sides )

y - ky + 3 = 5k ( subtract 3 from both sides )

y - ky = 5k - 3 ← factor out y from each term on the left side

y(1 - k) = 5k - 3 ← divide both sides by (1 - k)

y = 5k- 3

____

1 - k

4 0

2 years ago

A bag contains 10 colored marbles - 4 red, 4 blue and 2 green.

alexira [117]

the probability would be 100% if your smart

Step-by-step explanation:

ok so think of this if you have 10 marbles but it never said anything about getting rid of marbles ,you can get rid of four marbles.

3 0

2 years ago

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N-4=16 solve equation

gizmo_the_mogwai [7]

n - 4 = 16 Given

+ 4 + 4 Cancel out 4 to isolate n variable

n = 20

Prove.

20 - 4 = 16

16 = 16

True.

6 0

2 years ago

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A simple random sample of size n equals 200 individuals who are currently employed is asked if they work at home at least once p

____ [38]

Answer: 99% of confidence interval for the population proportion of employed individuals who work at home at-least once per week

//0.20113,0.20887[/tex]

Step-by-step explanation:

step 1:-

Given sample size n=200

of the 200 employed individuals surveyed 41 responded that they did work at home at least once per week

Population proportion of employed individuals who work at home at least once per week P = $\frac{x}{n} =\frac{41}{200} =0.205$

Q=1-P= 1-0.205 = 0.705

step 2:-

Now $\sqrt{\frac{P Q}{n} } =\sqrt{\frac{(0.205)(0.705)}{200} }$

=0.0015

step 3:-

Confidence intervals

using formula

$(P - Z_∝} \sqrt{\frac{P Q}{n},} (P + Z_∝} \sqrt{\frac{P Q}{n},$

$(0.205-2.58(0.0015),0.205+2.58(0.0015)\\0.20113,0.20887$

=0.20113,0.20887[/tex]

conclusion:-

99% of confidence interval for the population proportion of employed individuals who work at home at-least once per week

//0.20113,0.20887[/tex]

4 0

3 years ago

The tables show the cost for different numbers of song downloads.

iren [92.7K]

Answer:

Step-by-step explanation:

its the right answer bc its proportional

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3 years ago

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