1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sedbober [7]
2 years ago
13

Element X decays radioactively with a half life of 11 minutes. If there are 790 grams of Element X, how long, to the nearest ten

th of a minute, would it take the element to decay to 40 grams?
Mathematics
1 answer:
leva [86]2 years ago
3 0

Answer:

47.34158

rounded to the nearest tenth of a minute: 47.3

You might be interested in
What is another way to write the calculation add 16 and 25, and then multiply by 47?
GarryVolchara [31]

Answer:

(16+25)×47

Step-by-step explanation:

..........

8 0
2 years ago
Read 2 more answers
Matthew purchased a desk that was on
natulia [17]

Answer:

ANSWER :

285.12

discount amount =45/00 x 480=45 x 48/10

=216.0

price of discount =480-216=264

salex tex 8/100 x 264. =21.12

total many of spend 264+21.12=285.12

4 0
3 years ago
Joshua went kayaking. It cost him $ 15 to rent the kayak. It also cost $ 6 for each hour spent on the lake kayaking. Joshua spen
pishuonlain [190]

Step-by-step explanation:

The total bill will be the sum of the rent and the cost for the total time spent.

$15 + $6 * 2.5

$15 + $15

$30

8 0
2 years ago
1.Encuentra la ecuación de la circunferencia que tiene como ecuación ordinaria (x-4)² + (y+5)²= 25 2- encuentra la ecuación gene
rodikova [14]

Responder:

1) x² + y²-8x + 10y + 16 = 0

2) x² + y² + x + 18y + 33 = 0

Explicación paso a paso:

A partir de la pregunta, debemos expresar la ecuación en la forma estándar de un círculo expresado como;

x² + y² + 2gx + 2fy + c = 0 donde;

(-g, -f) es el centro.

1) Para la ecuación (x-4) ² + (y + 5) ² = 25

Expande el paréntesis;

(x-4) ² + (y + 5) ² = 25

x²-8x + 16 + y² + 10x + 25 = 25

x²-8x + 16 + y² + 10y + 25-25 = 0

Recopile términos similares;

x² + y²-8x + 10y + 16 + 0 = 0

<em>x² + y²-8x + 10y + 16 = 0 </em>

<em>Por lo tanto, la ecuación requerida es x² + y²-8x + 10y + 16 = 0 </em>

<em> </em>

2) Para la expresión (x + 1) ² + (y + 9) ² = 49

x² + x + 1 + y² + 18y + 81 = 49

x² + x + 1 + y² + 18y + 81-49 = 0

Recopile términos similares;

x² + y² + x + 18y + 82-49 = 0

<em>x² + y² + x + 18y + 33 = 0 </em>

<em>Por tanto, la ecuación requerida es x² + y² + x + 18y + 33 = 0</em>

4 0
2 years ago
Is the fraction 45/61 in the simplest form? Explain.​
Leona [35]

Answer: i think it is.

you cant divide both numbers by the same number

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Any help for this question , please !
    10·1 answer
  • Which angles are adjacent angles?<br><br> A. B. C. D.
    15·1 answer
  • PLEASE HELP FOR POSITIVE COMMENTS ON YOUR PROFILE AND 44 POINTS! A classroom investigation list bleach as an ingredient. Bleach
    9·1 answer
  • Someone please help me asap !!!!
    7·1 answer
  • Solve the formula below for the specified variable.<br><br> d = rt for t
    10·1 answer
  • The perimeter of a square is 66.8 cm. What is the side length of the square?
    8·1 answer
  • 16 divided by 1/8 minus 1
    5·1 answer
  • Jane needs $20 to buy her radio.She has saved $15. What percent of the cost of the radio has she saved?
    12·2 answers
  • 7.5x(D-2.5)for D=3.5
    15·1 answer
  • A box of cereal costs $3.69. The box has 13.7 ounces of cereal. About how much does each ounce cost?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!