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Brut [27]
3 years ago
11

Q3.

Mathematics
1 answer:
umka2103 [35]3 years ago
3 0

Answer:

8.48%

Step-by-step explanation:

Bill's weight decreases from 64.8 kg to 59.3 kg.

We need to find the percentage decrease in Bill's weight. It can be calculated as follows :

\%=\dfrac{64.8 -59.3 }{64.8 }\times 100\\\\=8.48\%

So, the required decrease in percentage is 8.48%.

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A store advertises 15% off an item that regularly sells $300.what is the sale price off the item?
Komok [63]
The original price of the item is said to be 100 dollars.
Now, it offers 15% discount. Let's solve for the dicounted price.
=> 15% = 0.15
Solution:
=> 300 * .15 
=> 45 dollars 
=> 300 dollars - 45 
=> 255 dollars
3 0
3 years ago
Read 2 more answers
What is the square foot of 2
yKpoI14uk [10]
144 square inches because it's 12 by 12 by 12
3 0
3 years ago
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4.521x10^1 in scientific notation
Vikki [24]

Answer:

if you are asking for the real number, the answer would be 45.21

Step-by-step explanation:

We simply multiply by 10 since we are given 1 as an exponent

3 0
3 years ago
If a and b are both integers and b does not equal 0, then -(a/b) = (-a)/b = a/(-b) Choose two values for a and b. see if those v
kkurt [141]

a=4 , b=3  These values make the equation true .

<u>Step-by-step explanation:</u>

Here we have , If a and b are both integers and b does not equal 0, then -(a/b) = (-a)/b = a/(-b) Choose two values for a and b. We need to find if those values make the equation true . Let's find out:

We have the following equation:

-(a/b) = (-a)/b = a/(-b) , Let a=4 , b=3 , So

⇒ -(a/b) = (-a)/b = a/(-b)

⇒ -\frac{a}{b} = \frac{-a}{b} = \frac{a}{-b}

⇒ -\frac{4}{3} = \frac{-4}{3} = \frac{4}{-3}

⇒ -\frac{4(-1)}{3} = \frac{-4(-1)}{3} = \frac{4(-1)}{-3}                   { Multiplying by -1 }

⇒ \frac{4}{3} = \frac{4}{3} = \frac{4}{3}

Therefore , These values make the equation true .

7 0
4 years ago
Canine hip dysplasia is a degenerative disease that causes pain in many dogs. Sometimes advanced warning signs appear in puppies
nordsb [41]
<h2>Answer with explanation:</h2>

Formula for plus-four confidence interval :

\hat{p}\pm z^* \sqrt\dfrac{\hat{p}(1-\hat{p})}{n+4}}

, where n= Sample size.

\hat{p}  = Sample proportion and \hat{p}=\dfrac{x+2}{n+4}

z* = Critical z-value.

Let p be the proportion of puppies area found with early hip dysplasia.

As per given , we have

n= 42

\hat{p}=\dfrac{5+2}{42+4}=0.1522

Since confidence interval is not given , so we assume it as 95% .

z-critical value for 95% confidence is 1.96.

Then, the required confidence interval will become :

0.1522\pm (1.96)\sqrt{\dfrac{0.1522(1-0.1522)}{42+4}}\\\\ 0.152\pm  (1.96)\sqrt{0.002805112173}\\\\ 0.152\pm 0.1038\\\\ =(0.1522- 0.1038 ,\ 0.152+ 0.1038)\approx(0.0484,\ 0.256)

Hence, the plus four confidence interval for p = (0.0484, 0.256)

Interpretation: We are 95% sure that the true proportion of puppies area found with early hip dysplasia lies in  (0.0484, 0.256).

7 0
3 years ago
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