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barxatty [35]
3 years ago
13

BRAINLIEST ASAP solve for y -140=18+4(5y-2)

Mathematics
1 answer:
Elenna [48]3 years ago
4 0

Answer:

Variable Y is equal to 7.5.

Step-by-step explanation:

First, open the brackets:

18 + 20y - 8 = -140

Second, subtract 18 and add 8 from/to both sides.

20y = -140 - 18 + 8

20y = -150

Third, divide by 20.

y = 7.5

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Algebra 2 (picture shown)
TEA [102]

Answer:

<em>M(13)=14.3 gram</em>

Step-by-step explanation:

<u>Exponential Decay Function</u>

The exponential function is used to model natural decaying processes, where the change is proportional to the actual quantity.

An exponential decaying function is expressed as:

C(t)=C_o\cdot(1-r)^t

Where:

C(t) is the actual value of the function at time t

Co is the initial value of C at t=0

r is the decaying rate, expressed in decimal

The element has an initial mass of Mo=970 grams, the decaying rate is r=27.7% = 0.277 per minute.

The equation of the model is:

M(t)=M_o\cdot(1-r)^t

M(t)=970\cdot(1-0.277)^t

Operating:

M(t)=970\cdot 0.723^t

After t=13 minutes the remaining mass is:

M(13)=970\cdot 0.723^{13}

Calculating:

M(13)=14.3 gram

4 0
2 years ago
1 +100000 what is the best answer​
serg [7]

Answer:

10001 is the answer to your Question

5 0
2 years ago
An 8-sided die is formed when two square pyramids are attached by their bases. The perimeter of the base shape is 6 centimeters.
Leona [35]
Consider one pyramid
Side length of base = 1.5cm and its height is 1 cm
Slant height of one of the lateral faces =  sqrt(1^2 + 0.75^2) =  1.25 cm
Area of one of the triangular faces = 0.5 * 1.5* 1.25 =  0.9375 cm^2

There are 8  of these so the required surface area = 8 * 0.9375 
=  7.5 cm^2 Answer

5 0
3 years ago
Read 2 more answers
EXPERTS/ACE/GENIUSES
Naddik [55]

1SF = 1 1/2 = 1.5
centered at origin

answer is 
figures MNO and PNQ
6 0
3 years ago
Two fifth of a certain number is 30 what is the number?
vesna_86 [32]
<h2>75</h2>

- - - - - - - - - - - - - - - - - - - - - - - -

Beginning with an "If-then" statement ⇣

<em>If </em><em>2/5 = 30 </em><em>then</em><em> 1/5 = 15</em>

Now we have 1/5, let's make it 1 by multiplying x5.

<em>15 x 5 = </em><em>75</em>

- - - - - - - - - - - - - - - - - - - - - - - -

Good luck! :)

~pinetree

3 0
2 years ago
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