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zvonat [6]
3 years ago
15

Allister's father is 120% of Allister's height. If his father measures 180 cm, how tall is Allister?

Mathematics
2 answers:
katrin [286]3 years ago
8 0

Answer:

1.2*a=180

a=180/1.2

a=150 cm

Step-by-step explanation:

Katen [24]3 years ago
3 0

Answer:

a=180

Step-by-step explanation:

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A student group claims that first-year students at a university must study 2.5 hours (150 minutes) per night during the school w
AlekseyPX

Answer:

We have strong evidence that on average, students study less than 150 minutes per night during the school week

Step-by-step explanation:

Normal distribution:

mean     μ₀ = 150

Sample:

Sample size    n = 272

Sample mean   x = 141

Sample standard deviation  s  = 66

The standard error of the sample mean  SE = σ /√n

SE = 66/√272

SE = 66 / 16,49

SE = 4

Test Hypothesis:

Null hypothesis                            H₀             x  =   μ₀

Alternative hypothesis                Hₐ            x <    μ₀

z(s)  test statistics is:

z(s)  =  ( x  -  μ₀ ) / s/√n

z(s) = - 9 /4

z(s) =  -  2,25

p-value  for that z(s)      p-value  = 0,0122

Then for α =  0,05 p-value < 0,05

We are in the rejection region we need to reject H₀

7 0
3 years ago
If one can of paint contains 2 2/5 gallons, how much paint is in one dozen cans of paint?
olasank [31]
Hi there!

Let’s take a look at the question.

One can of paint contains 2 2/5. We can make it easier by transforming the fraction (2 2/5) to a decimal (2.4). Now you have 2.4. Next, it says “one dozen”. One dozen refers to 12 cans. You’ll want to multiply 2.4 with 12.

Your answer is 28.8, or 28 4/5.


Hope this helps!
7 0
3 years ago
I need help with this ^
Inga [223]

Answer:

23

Step-by-step explanation:

17 pluse 2 is 19

180 minus 19 is 161

add all the vs you get 7

so 161 divided by 7 is 23

6 0
3 years ago
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Answer:

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7 0
3 years ago
Solve the quadratic equation 2x + x-7 = 0<br> Give your answers to 2 decimal places.
Yakvenalex [24]

\text{Its not a quadratic equation but the answer is 2.33}

3 0
2 years ago
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