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2 years ago

5x +3y=210 x+y=60 Witch can represent a linear equation

Mathematics

1 answer:

nadya68 [22]2 years ago

4 0

Answer:

both

Step-by-step explanation:

Both of the equations shown here are linear equations in standard form.

5x + 3y = 210

x + y = 60

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300 reduced by 3 times x is 33

Wewaii [24]

300-3x=33

Subtract 300 on both sides.

-3x=-273

Divide both sides by -3.

x=91

I hope this helps!
~kaikers

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3 years ago

The half-life of the radioactive element unobtanium-43 is 10 seconds. If 48 grams of unobtanium-43 are initially present, how ma

natka813 [3]

Answer:

At time, 10 seconds, the mass remaining is 24 grams

At time, 20 seconds, the mass remaining is 12 grams

At time, 30 seconds, the mass remaining is 6 grams

At time, 40 seconds, the mass remaining is 3 grams

At time, 50 seconds, the mass remaining is 1.5 grams

Step-by-step explanation:

Given;

initial mass of the radioactive element = 48 grams

half life, t = 10 seconds

time of decay (s) remaining mass of the radioactive element

0 ------------------------------------------------- 48 grams

10------------------------------------------------- 24 grams

20 ------------------------------------------------- 12 grams

30 -------------------------------------------------- 6 grams

40 --------------------------------------------------- 3 grams

50 ----------------------------------------------------- 1.5 grams

60------------------------------------------------------0.75 grams

Thus;

At time, 10 seconds, the mass remaining is 24 grams

At time, 20 seconds, the mass remaining is 12 grams

At time, 30 seconds, the mass remaining is 6 grams

At time, 40 seconds, the mass remaining is 3 grams

At time, 50 seconds, the mass remaining is 1.5 grams

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3 years ago

A rectangular picture frame measures 4.0 inches by 5.5 inches. To cover the picture inside the frame with glass costs $0.99 per

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3 years ago

Read 2 more answers

Question 2 of 10<br> Solve the equation x = gtr for r.

umka2103 [35]

Answer:

see attached.

Step-by-step explanation:

kindly see attached.

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2 years ago

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It looks like your first selection (a) is appropriate.

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3 years ago