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IgorLugansk [536]
3 years ago
5

Emily sold 99 boxes of cookies for a fundraiser. If she sold 60% of the total boxes of cookies sold for the fundraiser, how many

boxes of cookies were sold for the fundraiser total?
Mathematics
1 answer:
liubo4ka [24]3 years ago
8 0

I believe you must subtract 99-60=39. Hope this helps.

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A toxic radioactive substance with the density of 4 mg/cm² is detected in the been detected in the ventilating ducts that was us
Kruka [31]
The formula for half-life is:

A = P(0.5)^{t/h}

A is the amount remaining, P is the initial amount, t is the time that has passed, and h is the half-life of the substance.  Plug in the values that you know and solve:

4 = P(0.5)^{35/20} \\ \\ 4 = P(0.5)^{1.75} \\ \\ P = \frac{4}{0.5^{1.75}} \\ \\ P \approx 13.4543426441

Rounded to the nearest whole number, the density of the substance was about 13<span>mg / cm².</span>
8 0
3 years ago
A null hypothesis can only be rejected at the 5% significance level if and only if:
ozzi

Answer:

Option (B) a 95% confidence interval does not include the hypothesized value of the parameter              

Step-by-step explanation:

Alpha, α = 0.05

We conduct a hypothesis test at 5% significance level.

The null hypothesis will be rejected when

Option (B) a 95% confidence interval does not include the hypothesized value of the parameter

  • When a 95% confidence interval is constructed,it contains all the possible values for the parameter being estimated.
  • If the value of the parameter stated in the null hypothesis is contained in the 95% confidence interval, then we fail to reject the null hypothesis 0.05 level and accept it.
  • If the value stated in the null hypothesis is not in the interval, then we fail to accept the null hypothesis and reject the null hypothesis at the 0.05 level.
6 0
3 years ago
If a:b=5:7 and b:c=6:12, then a:b:c<br>​
uranmaximum [27]

Step-by-step explanation:

A/B=5/7 , B/C=6/12

Taking B=12×7=84, we get

A=12×5=60, C=7×6=42

Hence,

60:84:42. Answer

3 0
2 years ago
What is 123.4×34 cause I don't know so can someone please give me the right answer
kolbaska11 [484]
The answer is 4195.6. Hope this helps you :)
4 0
3 years ago
I NEED HELP WILL GIVE YOU 100 POINTS!!!! IF SOLVED CORRECTLY ​
Dafna11 [192]

Answer:

The edge lengths are 3 for all of them. Radical cubed 27 is also 3.

Step-by-step explanation:

27/ 3 = 9.  The  square root of 9 is 3.  So 3 * 3 * 3 = 27. For the bottom answer, it is 3 since 3 * 3 * 3 = 27.

How simple is this answer. I don't understand your problem.

6 0
3 years ago
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