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zvonat [6]
3 years ago
9

What is the area? (Will mark if correct)

Mathematics
2 answers:
Jet001 [13]3 years ago
8 0

Answer:

A=40.5

Step-by-step explanation:

A=pq /2

A= 9x9/2

A=81/2

A=40.5

larisa [96]3 years ago
7 0

Answer:

81

Step-by-step explanation:

All you have to do is times 9*9=81

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when you are dividing two decimals how can you check whether you have divided the decimals correctly?
Mice21 [21]

Dividing two decimals means that we need to make the following math operation:

\frac{p}{q} \\ \\ where \ p \ and \ q \ are \ two \ decimals

According to the following definition:

If \ p \ and \ d \ are \ two \ real \ numbers \ (two \ decimals) \ it \ is \ true \ that:\\ \\  p=d\times q+r \\ \\ where:\\ \\ p:Dividend \\ d:Divisor \\q:Quotient \\ r:Reminder


We can prove that our result is correct by multiplying the divisor by the quotient plus the reminder and verifying that this result matches the dividend. Also, we can use a calculator to prove that.

5 0
3 years ago
Read 2 more answers
What is the value of x
ratelena [41]

Answer:

19

Step-by-step explanation:

6 0
3 years ago
After the 4th half life how much of the sample is left if the mass is 100g.
vazorg [7]

Answer:

\huge\boxed{\sf 6.25 \ g}

Step-by-step explanation:

After every Half life , Half of the mass is left.

After 1st Half life = 100 g / 2 = 50 g

After 2nd Half life = 50 / 2 = 25 g

After 3rd Half life = 25 / 2 = 12.5 g

After 4th Half life = 12.5 / 2 = 6.25 g

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
6 0
3 years ago
Find the missing angle thank you
Maksim231197 [3]
Straight lines will always add up to 180 degrees, so the angle that is missing here is supplementary to the other angle(adds up with the other angle to get 180) so we take 79 away from 180 and get 101 degrees
7 0
4 years ago
Read 2 more answers
Find the distance between the points (-3, 11) and (5,5).<br> O 10<br> 2/10<br> o 2.17
german

Answer: d = 10

Step-by-step explanation:

Step-by-step explanation:

The formula for calculating distance between two points is given by :

d = \sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}

x_{1} = -3

x_{2} = 5

y_{1} = 11

y_{2} = 5

substituting the values , we have

d = \sqrt{(5-(-3))^{2}+(5-11)^{2}}

d = \sqrt{(5+3)^{2}+(-6)^{2}}

d = \sqrt{(8)^{2}+(-6)^{2}}

d = \sqrt{64+36}

d = \sqrt{100}

d = 10

4 0
3 years ago
Read 2 more answers
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