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Salsk061 [2.6K]
3 years ago
8

Please help me :)) i do not understand math lol

Mathematics
1 answer:
KiRa [710]3 years ago
5 0

Answer:

i think the  first one and thrid

Step-by-step explanation:

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Please help me with this homework question. No silly answers please and no bots, links, etc! I will mark brainliest to whoever g
Andre45 [30]

Answer:

T = (m × 20) + 25

(2.5 × 20) + 25 = 75

<u>75 minutes</u>

110 - 25 = 85

85 ÷ 20 = 4.25

<u>4.25 kilograms</u>

6 0
3 years ago
Cobalt-56 has a decay constant of 8.77 × 10-3 (which is equivalent to a half life of 79 days). How many days will it take for a
sweet-ann [11.9K]
As I read this one, is just a decay exponential equation... so

A = P(1 + r)ᵗ   where "t" is days passed. . hmm in this case is decay, so negative rate  A = P(1 - r)ᵗ, and the decimal amount would be 0.00877 for the rate

62% of P, the original value, is just 0.62P, now... if we hmm take P as just 1, it could be any amount, but 62% of 1,000,000 is just 62% of 1 times 1,000,000

so, for the sake of comparing it with a percentage, 1 will do

\bf 0.62P=P(1-0.00877)^t\implies P=1\implies 0.62=(1-0.00877)^t&#10;\\\\\\&#10;ln(0.62)=ln[(1-0.00877)^t]\implies ln(0.62)=t\cdot  ln(1-0.00877)&#10;\\\\\\&#10;\cfrac{ln(0.62)}{ln(0.99123)}=t
7 0
3 years ago
Okay here's the first few questions​
Marina86 [1]

Answer:

1,yes

2,no

3,x=√117

4,x=12 y=6

5,x=12, y=15.75

6 0
3 years ago
Finding the geometric mean
grigory [225]

Answer:

To find the geometric mean of two numbers, just find the product of those numbers and take the square root!

Step-by-step explanation:

4 0
2 years ago
Membership to iron gym cost $40 per month plus $30 registration fee. the monthly cost is deducted automatically from your accoun
garri49 [273]

Answer:

C. 8

Step-by-step explanation:

8 x 40 = 320$ plus 30$ fee is 350

4 0
3 years ago
Read 2 more answers
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