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3 years ago

Which expression is equivalent to square root a^7

Mathematics

1 answer:

FinnZ [79.3K]3 years ago

3 0

Answer is d

Step-by-step explanation:

If you multiply a^6 and a it equals a^7

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I need help on this question

Westkost [7]

Answer:

v = 16.5

Step-by-step explanation:

6 0

3 years ago

This is for algebra 1

allsm [11]

X+y=12 -- 1
3x+2y=29 -- 2

(1)x2
2x+2y=24 -- 1
(2)-(1)
x=5

Sub x into 1
x+y=12
5+y=12
y=7

Her two numbers are 5 and 7

3 0

3 years ago

The doubling period of a bacterial population is 20 20 minutes. At time t = 100 t=100 minutes, the bacterial population was 9000

Nuetrik [128]

Answer:

The initial population was 2810

The bacterial population after 5 hours will be 92335548

Step-by-step explanation:

The bacterial population growth formula is:

$P = P_0 \times e^{rt}$

where P is the population after time t, $P_0$ is the starting population, i.e. when t = 0, r is the rate of growth in % and t is time in hours

Data: The doubling period of a bacterial population is 20 minutes (1/3 hour). Replacing this information in the formula we get:

$2 P_0 = P_0 \times e^{r 1/3}$

$2 = e^{r \; 1/3}$

$ln 2 = r \; 1/3$

$ln 2 \times 3 = r$

$2.08 \% = r$

Data: At time t = 100 minutes (5/3 hours), the bacterial population was 90000. Replacing this information in the formula we get:

$90000 = P_0 \times e^{2.08 \; 5/3}$

$\frac{9000}{e^{2.08 \; 5/3}} = P_0$

$2810 = P_0$

Data: the initial population got above and t = 5 hours. Replacing this information in the formula we get:

$P = 2810 \times e^{2.08 \; 5}$

$P = 92335548$

3 0

3 years ago

How to work this out ?

Free_Kalibri [48]

Answer:

The solution is (-3, -2).

Step-by-step explanation:

Please note that if you simply add these 2 equations together, 9x - 9x = 0, and you are then left with -5y = 10. Thus, y = -2. Subbing -2 for y in the first equation, we get 9x - 8(-2) = -11, or 9x + 16 = -11.

Subtracting 16 from both sides, we get 9x = -27, so that x = -3.

The solution is (-3, -2).

6 0

3 years ago

HELP PLEASE !!!! a. 7(x + 2) = 3x + 6 b. 5/4x-17=x-8 c. 1/2(16x+5)-3=19-5x

Fantom [35]

A=x= -2 b=x=36 c= x=1.5

3 0

2 years ago