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liubo4ka [24]
2 years ago
10

There are 16 girls and 18 boys in a class. The teacher Chooses a students name at random to answer a question. What is the proba

bility that the teacher chooses a girl to answer the question?
Mathematics
1 answer:
murzikaleks [220]2 years ago
6 0

Step-by-step explanation:

girl=16

boy=18

picking a girl at random

the answer is = 1/16

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Can someone help with this one?
Vedmedyk [2.9K]

Answer:

(a) 0.05 minutes per calorie burned

(b) Slope = 20

Step-by-step explanation:

(a) If 200 calories are burned in 10 minutes...then what about 1 calorie

; 1/200 × 10 = 0.05 minutes

(b) Slope of the graph...;just take any two points on the graph...which are (10;200) and (20;400)

Slope = (400 - 200) ÷ (20 - 10)

;Slope = 200 ÷ 10

;Slope = 20

7 0
3 years ago
A piece of electronic equipment is built with 3 cooling fans. The equipment will function only if at least 2 of the 3 fans are w
PolarNik [594]

Answer:

0.66608

Step-by-step explanation:

Equipment = 3 fans

Mortality = 0.098

We are required to find probability that equipment gets to work for 5years

The question says forces of mortality is constant and also equal to 0.098

To calculate p(x>5)

We will do this by calculating exponentially

e^-0.098x5

= 0.612626394

Probability that at least 2 fans out of 3 are working

3(0.612626394)²+(1-0.612626394)+(0.612626394)³

= 1.1259333x0.3873736+0.2299255

= 0.6660823470

This is approximately

<u>0.6608</u>

this is the probability that the equipment will work for at least 5years

8 0
3 years ago
Which equation represents the partial sum of the geometric series?
user100 [1]

Answer:

B

Step-by-step explanation:

4 0
3 years ago
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Pls help . <br><br> (when u get in the document its duplicated)
riadik2000 [5.3K]
The picture is not showing up
6 0
2 years ago
Read 2 more answers
F(x)=−4x ^ 2 +10 {Find }f(-2)
BlackZzzverrR [31]

Answer:

f(-2) = -6

Step-by-step explanation:

<u>Step 1:  Set x to -2 </u>

f(-2) = -4(-2)^2 + 10

f(-2) = -4(4) + 10

f(-2) = -16 + 10

f(-2) = -6

Answer:  f(-2) = -6

3 0
2 years ago
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