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ad-work [718]
3 years ago
6

Draw a line from each figure to an area

Mathematics
1 answer:
Georgia [21]3 years ago
3 0

Answer:

A=27 cm^2

B=24 cm^2

C=26 cm^2

D=28 cm^2

Step-by-step explanation:

Break each problem down into individual shapes.

For instance, A can be split into a 3 by 3 square and a 6 by 3 square.

      Get the area by multiplying the length & height: A = L * H

For the triangles the area is the same equation divided by 2 A=LH/2

Shapes with unclear dimensions like C can be skipped and have their area revealed through process of elimination.

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assume the substance has a half-life of 11 years and the initial amount is 126 grams.How long will it be until only 15 % remains
Mumz [18]
(126) times (1/2 to the x/11 power) = 15% times 126

(1/2) to the x/11 power = 0.15

Take the log of both sides :

(x/11) times log(1/2) = log(0.15)

Multiply both sides by 11 :

'x' times log(1/2) = 11 x log(0.15)

Divide both sides by " log(1/2) " :

x = 11 x log(0.15)/log(1/2) = <em><u>30.107 years</u></em> (rounded)

That's the time it takes for <em><u>any-size</u></em> sample of this substance
to decay to 15% of its original size.


5 0
3 years ago
HELP! Ev evaluate the square root of 16 plus the square root of 29, correct to two decimal places.
Stella [2.4K]

Answer:

\sqrt{16} +\sqrt{29} =9.39

Step-by-step explanation:

\sqrt{16} =4

\sqrt{29} ≅ 5.39

4+5.39=9.39

6 0
3 years ago
Read 2 more answers
In a play-school with 500 students, the number of boys is 20 more than five-sevenths of the number of girls. Let’s find the numb
Arisa [49]

Answer:

Ok, so we can express the boys as another letter. just express them as the letter B for boys.

Step-by-step explanation:

I really don't know why.

8 0
3 years ago
Anna has a coin and a number cube. What is the probability that she flips a heads, and rolls a 3 or 5?
eduard

Answer:

1/6 chance

Step-by-step explanation:

1/2 multiplied by 1/3

5 0
3 years ago
Please Need help on this
faust18 [17]

:) Hope this helps you to your question

6 0
3 years ago
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