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Aleksandr-060686 [28]
4 years ago
10

I need help pleaseee

Mathematics
1 answer:
laiz [17]4 years ago
8 0
7 because 3 times 7 is equals 21
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Someone help!!! PLEASE BE QUICK.... <br> **BONUS POINTS**
Tatiana [17]

Answer:

884cm^2

Step-by-step explanation:

top triangle area=21*24/2=252

central triangle area=16*24/2=192

left n right triangle area (each)=22*20/2=220

total area of wood needed=252+192+220+220

=884cm^2

6 0
3 years ago
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Iodine-125 has a daily decay rate of about 1%. How many milligrams of a 500 mg sample will remain after 300 days? Round the answ
Amanda [17]
So.. in this case, the starting amount is the 500mg sample... and the rate of decay, negative rate, is 1%, and at the time, the elapsed days is 0, to t = 0, P = 400

\bf \qquad \textit{Amount for Exponential change}\\\\&#10;A=P(1\pm r)^t\qquad &#10;\begin{cases}&#10;A=\textit{accumulated amount}\\&#10;P=\textit{starting amount}\to &500\\&#10;r=rate\to 1\%\to \frac{1}{100}\to &0.01\\&#10;t=\textit{elapsed period}\to &300\\&#10;\end{cases}&#10;\\\\\\&#10;A=500(1-0.01)^{300}
7 0
3 years ago
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18. Doreen picked 2.33 kg of grapes. She gave 800 g of the grapes to her brother and then shared the remaining grapes equally wi
Nikitich [7]

---------------------------------------︵‿︵‿୨♡୧‿︵‿︵--------------------------------------

Answer:

765 grams

Step-by-step explanation:

Exchange:

2.33 kg = 2330 gr

Grams of grapes that are left after giving 800 grams to her brother:

2330 - 800 = 1530 gr

Grams of grapes each sister will get if Doreen shares the remaining equally:

1530 : 2 = 765 gr

--------------------°✧° Pls mark me as °♡°(ꂧ ꁞ ꂧ)°♡° Brainliest °✧°--------------------

3 0
2 years ago
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Find the area of a triangle with a base of 10 meters and a height of 6 meters
Deffense [45]
A = (1/2)bh  [b = 10 m, h = 6 m]

A = (1/2) * 10 * 6 = 30 m²
5 0
3 years ago
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What is 42 x 3? (try to not use a calculator though) I don't actually need this to be solved but, I want to see if you guys can
laila [671]

Answer:

126

Step-by-step explanation:

42 times 3 = 126

6 0
3 years ago
Read 2 more answers
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