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vivado [14]
2 years ago
12

Please tell me how to do this, I'll mark brainliest if you do

Mathematics
2 answers:
lesantik [10]2 years ago
7 0
(180- 90-20)
That’s equals 77 degrees but it’s larger than 90 degrees

You only minus
The bottom line 180 and the 20 degree angle

It will be 160 degrees

-Zayn Malik
Arada [10]2 years ago
3 0

The bottom line is a straight line that is equal to 180 degrees.

The three angles above it all need to add together to equal 180.

One angle is given as 20, so the other two need to add together to equal 160 ( 180-20 = 160)

Those two angles form the angle ACE so the answer would be 160 degrees,

Answer 160 degrees.

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What is the probability that five randomly selected students will have a mean score that is greater than the mean achieved by th
katrin2010 [14]

Answer:

the probability that five randomly selected students will have a mean score that is greater than the mean achieved by the students = 0.0096

Step-by-step explanation:

From the five randomly selected students ; 160, 175, 163, 149, 153

mean average of the students = 160+175+163+149+153/5

= mean = x-bar = 800/5

mean x-bar = 160

from probability distribution, P(x-bar > 160) = P[ x-bar - miu / SD > 160 -150.8 /3.94]

P( Z>2.34) = from normal Z-distribution table

= 0.0096419

= 0.0096

hence the probability that five randomly selected students will have a mean score that is greater than the mean achieved by the students = 0.0096

where SD = standard deviation = 3.94 and Miu = 150.8

5 0
3 years ago
A grocery store sells a bag of 5 lemons for 2$. watnis the unit cost of each lemon in the bag
Ostrovityanka [42]

Answer:

$0.4

Step-by-step explanation:

Unit cost = cost / number of items

Unit cost = 2/5

2 divided by 5

3 0
3 years ago
The probability that a household owns a pet is 0. 55. Suppose there are 5 houses on a block. Assuming each household is independ
Alexandra [31]

If the probability that a household owns a pet is 0.55 then the probability that all households will have pets is equal to 0.0503.

Given that the probability that a household owns a pet is 0.55 and there are 5 houses on a block.

We are required to calculate the probability that all the five households will have pets.

Probability is basicallly the chance of happening an event among all the events possible. It cannot be negative.

Binomial probability distribution is basically the probability calculations but in different combinations.

In this we have to calculate the probability that all the houses will have the pets then the probability that all five households will have pets is equal to 5C_{5}(0.55)^{5} (1-0.55)^{0}

=1(0.0503)(0.45)^{0}

=1*0.0503*1

=0.0503

Hence the probability that all the five households will have pets is equal to 0.0503.

Learn more about probability at brainly.com/question/24756209

#SPJ4

6 0
1 year ago
N(n − 3) + 2(n-3)=( )(n-3)
expeople1 [14]

Answer: n = -1 n = 3

Step-by-step explanation:

4 0
4 years ago
Paul burned 65 calories in 15 minutes. How many calories did he burn in 1 hour? Please show how got to your answer!
stira [4]

Answer:

65 calories=15 minutes

Find how many minutes it will take Paul to born 1 calory. You divide 65 by 15

65÷15=4.333

Find how many calories lost in 1 hour= 60 minutes multiply by 4.3

60*4.333=260 calories

Therefore,

Paul burns 260 calories in 1 hour

7 0
3 years ago
Read 2 more answers
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