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Alexeev081 [22]
2 years ago
12

Area of the shaded region: ___ units squared

Mathematics
1 answer:
sergey [27]2 years ago
8 0

Answer:

80 units squared

Step-by-step explanation:

well first you get the area of the big rectangle, 8x12=96

then you need to get the area of the light sqaure, because there is the same amount of ticks 3 times, the equal lengths are 12/3= 4 units each so the dimensions of the sqaure are 4 by 4 4x4=16 then you do 96-16= 80 units squared.

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1/10. You can do this by dividing both numbers by three. Hope this helped!
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4 years ago
A television set costs $4500 cash. When bought on hire-purchase, a deposit of $450 is
mezya [45]

Answer:

$750

Step-by-step explanation:

did the problem

7 0
3 years ago
In the 1980’s, a clinical trial was conducted to determine if taking an aspirin daily reduced the incidence of heart attacks. Of
zubka84 [21]

There is enough evidence to conclude that taking aspirin cannot  reduces the chance of cancer.

Given sample size of patients take aspirin 11037, sample size of patients who have assigned placebo group be 11034. 104 doctors who take aspirin had a heart attack, 189 doctors had placebo had heart attacks.

First we have to form hypothesis.

H_{0} :p{1} -p_{2} =0

H_{1}:p_{1} -p_{2} < 0

We have to find the respective probabilities.

p_{1}=104/11037

=0.0094

p_{2}=189/11034

=0.0171

Now their respective margin of errors.

s_{1}=\sqrt{ {(0.0094*0.9906)/11037}

=0.0009

s_{2}=\sqrt{0.0171*0.9829}

=0.0011

Hence the distribution of the differences,they are given by:

p=p_{1} -p_{2}

=0.0094-0.0171

=-0.0077

S=\sqrt{s_{1} ^{2}+s_{2} ^{2}  }

=\sqrt{(0.0009)^{2} +(0.0011)^{2} }

=0.00305

z=(p -f)/S (In which f=0 is the value tested at the null hypothesis)

=(-0.0077-0)/0.00305

=-2.52

p value will be 0.005.

p value of 0.05 significance level.

z=1.96.

1.96>0.005

So we will reject the null hypothesis which means it cannot reduce the whole chance of becomming a heart attack.

Hence there is enough evidence to conclude that taking aspirin cannot  reduces the chance of cancer.

Learn more about t test at brainly.com/question/6589776

#SPJ4

6 0
2 years ago
(16.379-0.879)/4.2×1.241
FrozenT [24]

Answer:

go ask ur teacher u fool brain less stupid

8 0
3 years ago
Find the 8th term of the geometric sequence: 1/3, -1, 3
olga55 [171]

Step-by-step explanation:

a= 1/3

common ratio = -3

the 8th term is given by,

a {r}^{7}  =  \frac{1}{3}  \times  {( - 3)}^{7}

=  - 729

7 0
4 years ago
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