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shepuryov [24]
3 years ago
15

How can I determine the question I circled? I’m stuck, please help (look at photo)

Mathematics
1 answer:
Semenov [28]3 years ago
7 0

i dont really know but im guessing use ratios. like 4:total volunteers

or something like that

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A meter stick perpendicular to the ground casts a 1.5 meter shadow at the same time a telephone pole casts a shadow that is 9 me
snow_lady [41]
The height of the telephone pole = 9 / 1.5 = 6 meters
7 0
3 years ago
I need help with this one
Aleksandr [31]

Answer:

58 degrees

Step-by-step explanation:

The little square in the corner signals a right angle/a 90 degree angle. If x and 32 add up to 90, then x is 58.

7 0
2 years ago
A health psychologist knew that corporate executives in general have an average score of 2.55 with a standard deviation of 0.5 o
Mumz [18]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

Population mean (μ) = 2.55

Population standard deviation (σ) = 0.5

Sample size (n) = 30

Sample mean (x) = 2.76

α = 0.05

STEP 1:

Stress score in general executive (s1)

Stress score in exercising executive (s2)

Null : s1 = s2

Alternative : s1 < s2

STEP 2:

Shape of distribution = normal

Population mean (μ) = 2.55

Population standard deviation (σ) = 0.5

Sample size (n) = 30

Sample mean (x) = 2.76

α = 0.05

Decision rule :

α = 0.05 which corresponds to a t score (t0) ;

df = n - 1 = 30 - 1= 30 at 0.05 = 1.699

If :

(Test statistic (t) > t0) ; reject the Null

(right tailed test)

Test statistic (t) :

(x - μ) / (σ/√n)

(2.76 - 2.55) / (0.5/√30)

0.21 / 0.0913

= 2.30

t > t0

2.30 > 1.699

t is more extreme than t0

Hence, reject the null at α = 0.05

7 0
3 years ago
Jenna is having a sidewalk sale. She pays $12 for a
RSB [31]

Answer:

25.5

Step-by-step explanation:

because you have to do 25×1.50 -12

4 0
3 years ago
Christine has a rope that is 9 meters long. She cuts away a plece that is 3.29 meters long. How long is the remaining plece of r
natima [27]

Answer:

9.00-3.29= 5.71 meters rope remaining

7 0
3 years ago
Read 2 more answers
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