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kow [346]
3 years ago
10

An element with a mass of 320 grams decays by 5.1% per minute. To the nearest tenth of a minute, how long will it be until there

are 200 grams of the element remaining?
Mathematics
1 answer:
HACTEHA [7]3 years ago
7 0

Answer:

X=9

Step-by-step explanation:

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Solve for T: 10t-4x=3S Explanation plz
kifflom [539]
T=3s/10+2x/5 hope this helped <3
4 0
2 years ago
Please help will mark brainliest for the right answer
hodyreva [135]

Answer:

a).  x + y + 90° = 180°

b).  x = 67°

    y = 23°

Step-by-step explanation:

The sum of all angles in a triangle is 180°.

One of the angles in the figure is a right angle, or 90°.  Therefore the sum of the three angles in the figure is:

x + y + 90 = 180

We are also told that x + 2 = 3y.  

Rearranging that to isolate x gives us:  

x = 3y - 2

Thake the first equation and substitute the above expression of in place of x:

x + y + 90° = 180°

(3y-2) + y + 90° = 180°

4y + 88° = 180°

4 y = 92°

y = 23°

To find angle x, use y = 23°

x = 3y - 2

x = 3*(23°) - 2

x = 67°

The sum 90° + 67° + 23° = 180°

4 0
2 years ago
‘ it costs per person to skate at a roller rink A group pays a total of for i i skating people canceled because they could not g
Elan Coil [88]
As it says, set up the equation
7(x - 4) = 84

the parentheses mean you multiply, so it is really
7 × (x - 4) = 84
Now, find how many people are left after the 4 people canceled84 ÷ 7 = 12
There are 12 people
Now, add the 4 people that canceled
12 + 4 = 16

Answer:

x = 16 people
There was 16 people originally going skating.
6 0
3 years ago
A submarine is cruising 8 meters below the surface. The captain orders a dive of another 17 meters. What is the new cruising dep
swat32

Answer:

25 meters.

Step-by-step explanation:

Given in the question that,

Initial depth of the submarine = 8 meters

After the order of the captain, the submarine was made to dive another 17 meters.

So, the final cruising depth of the submarine can be calculated by <u>adding the initial depth of the submarine and the depth further increased upon the order of the captain</u>.

Thus, final cruising depth of the submarine = 8 + 17 = 25 meters.

4 0
3 years ago
Do you have textbooks
Fittoniya [83]

There are holt textbooks online if you have an Eclass course page.

7 0
3 years ago
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