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MAXImum [283]
3 years ago
10

A small tree was planted at a height of 8 feet. The tree has been planted for 16 months, and is now 59.2 feet tall. Which equati

on could be used to find x, the average number of feet the tree grew each month?
Mathematics
1 answer:
ss7ja [257]3 years ago
5 0

Answer:

8+16x=59.2 or 16x+8=59.2

Step-by-step explanation:

if it was 8 feet when it was planted and it grew x feet for 16 months ending at 59.2 ft then you would multiply 16 times x and add the original 8 ft which will equal 59.2 feet.

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Solve for b, i already solved for A <br> will give brainliest
larisa86 [58]

Answer:

b=23 degrees

Step-by-step explanation:

a was 66 degrees so b=23 degrees   180-90-66=23

6 0
3 years ago
A bacteria culture grows with constant relative growth rate. The bacteria count was 1,920 after 4 hours and 1,966,080 after 12 h
attashe74 [19]

From the calculation, the growth rate is 0.88.

<h3>What is the growth rate?</h3>

To find the relative growth rate

P1 = Poe^rt

P2 = Poe^rt

Thus;

1920 = Poe^4r ------ (1)

1966080 =Poe^12r -------(2)

P2/P1 gives;

1966080/1920 = Poe^12r/Poe^4r

1024 = e^12r/e^4r

1024 =e^8r

1024 = (e^r)^8

2^10 = (e^r)^8

e^r = 2^1.25

e^r = 2.38

r = ln(2.38)

r = 0.88

The initial size of the culture is;

1920 = Poe^(0.88 * 4)

Po = 1920/e^(0.88 * 4)

Po = 57

The  expression for the exact number of bacteria after t hours is

P(t) = 57e^0.08t

The growth (in bacteria per hour) after 9.5 hours is

P(t) = 57e^(0.88 * 9.5)

P(t) = 243544

For the number to reach 72,000;

72,000 =  57e^0.88t

72,000/57 = e^0.88t

ln 126 = ln[e^0.88t]

4.8 = 0.88t

t = 4.8/0.88

t = 5.5 hours

Learn more about exponential growth;brainly.com/question/13674608

#SPJ1

8 0
2 years ago
I NEED HELPPPP PLEASEEEEW BEGGINGGG YOUUUU PLEASEEEEEE PLEASEEEEEEE​
avanturin [10]

Answer:

7x + 7

Step-by-step explanation:

2x + 5x = 7x

5 +2 = 7

4 0
3 years ago
Read 2 more answers
What is -36 divided by 9 plus -5 minus 6
brilliants [131]
-36 divided by 9 plus -5 minus 6 is equal to -15
3 0
3 years ago
Read 2 more answers
Una estrategia de cálculo mental con
Softa [21]

Esta estrategia se puede aplicar sumando  15,75 + 0,25, –1,8 + –0,20, 3,5 + 12,5 y 2,62 + 7,38 antes de sumar el tercer número dado en cada caso.

<h3>¿En qué consiste está estrategia?</h3>

La estrategia propuesta consiste en sumar dos números decimales que den como resultado un número entero antes de sumar el tercer número decima. Por ejemplo si teneos  1,4 + 0,6  + 1,2, se debe sumar primero 1,4 + 0,6 lo que es igual a 2 antes de sumar el 1,2.

<h3>¿Por qué utilizar esta estrategia?</h3>

Este estrategia es beneficiosa porque facilita sumar números decimales.

<h3>¿Cómo aplicar está estrategia?</h3>
  • 15,75 + 1,2 + 0,25 = 16 (0,25+15,75) + 1,2 = 17,2
  • (–1,8) + 2,45 + (–0,20) = -2 (-1,8-0,20) + 2,45 = 0,45
  • 3,5 + 11,8 + 12,5 = 16 (12,5+3,5) +11,8 = 27.8
  • 7,38 – 1,5 + 2,62 = 10 (7,38+2,62) + 2,62 = 12,62

Aprenda más sobre números decimales en: brainly.com/question/24620232

#SPJ1

7 0
1 year ago
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