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3 years ago

9

Ashley needs 75 flower seeds for her garden. She wants to spend the least amount of money and have the fewest seeds left over. W

here should Ashley buy her seeds?

2 answers:

allochka39001 [22]3 years ago

8 0

Not enough information to solve this problem

Fofino [41]3 years ago

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The temperature fell from 0 Degrees Fahrenheit to 15 and one-half Degrees Fahrenheit below 0 in 5 and three-fourths hours. Wen t

Kryger [21]

Answer:

The correct answer will be:

$-\dfrac{62}{23}$

Step-by-step explanation:

It is given that :

Initial temperature, $T_1 = 0^\circ F$

Final temperature,

$T_2 = -15\dfrac{1}{2}^\circ F\\\Rightarrow T_2 = -\dfrac{15\times 2+1}{2} ^\circ F\\\Rightarrow T_2 = -\dfrac{31}{2} ^\circ F$

Time taken :

$5\dfrac{3}{4}\ hrs = \dfrac{5 \times 4+3}{4}\ hrs = \dfrac{23}{4}\ hrs$

Change in temperature per hour:

$\dfrac{\text{Difference of temperature}}{\text{Total Time Taken}}\\\Rightarrow \dfrac{T_2-T_1}{\text{Total Time Taken}}$

Putting the values of temperatures and time:

$\dfrac{\dfrac{-31}{2}-0}{\dfrac{23}{4}}\\\Rightarrow \dfrac{\dfrac{-31}{2}}{\dfrac{23}{4}}\\\Rightarrow \dfrac{-31 \times 4}{2 \times 23}} \text{---- Error done by Wen at this step}\\\Rightarrow \dfrac{-31 \times 2}{23}}\\\Rightarrow \dfrac{-62}{23}}$

The error done by Wen was during calculating the values of fraction.

So, the correct answer is : $\frac{-62}{23}}$ instead of $\frac{-713}{8}$

5 0

4 years ago

Read 2 more answers

The circumference of the smaller circle is 30% of the circumference of the larger circle. Find the circumference of the larger c

Tasya [4]

Answer:

The circumference of the larger circle is 94.2 inches.

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

100 POINTSbrainlest to the person who get it right

Zina [86]

Answer:

[1] x² - 4/2x - 4

3² - 4/2 × 3 - 4 = 9 - 4/2
5/2

[2] 4 - 3x/2x + 4

4 - 3 × 2/2 × 2 + 4 = 2/8
1/4

[3] x²/2x² - 2

0²/2 × 0² - 2
0

[4] x² + 5/5 - x

- 2² + 5/5 + 2 = 4 + 5/7
9/7

[5] - x³/x² - 4

- 1³/-1² - 4 = - 1/1 - 4
1/3

[6] x + 3/x³ - 1

- 3 + 3/- 3³ - 1 = 0/- 27 - 1
0

[7] 5 - x²/3x²

5 - (- 4)²/3 × - 4² = 5 - 16/3 × 16
- 11/48

[8] - 2x + 6/2x³ - 3

- 2 × - 2 + 6/2 × - 2³ - 3
10/- 19

[9] 4x²/- 3x² + 1

4 × 1²/- 3 × 1² + 1 = 4/- 2
- 2

[10] 4x - 1/6x + 1

4 × 3 - 1/6 × 3 + 1
11/19

[11] x² - 1/x² + 1

1² - 1/1² + 1 = 0/2
0

8 0

3 years ago

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A 9,000-lb load is suspended from the roof in a shopping mall with a 16-ft-long solid aluminum rod. The modulus of elasticity of

Westkost [7]

Answer:

Step-by-step explanation:

Given:

elongation, x = 0.50 in

Force, f = 9000 lb

Young modulus, E = 10,000,000 psi

Maximum Stress, Sm = 30000 psi

Length, L = 16 ft

Converting ft to in,

12 in = 1 ft

=16 × 12 = 192 in

Young modulus, E = stress/strain

Stress = force/area, A

Strain = elongation, x/Length, L

E = f × L/A × E

1 × 10^7 = stress/(0.5/16)

= 26041.7 psi

Minimum stress = 26041.7 psi

Maximum stress = 30,000 psi

Stress = force/area

Area = 9000/26041.7

= 0.3456 in^2

Stress = force/area

Area = 9000/30000

= 0.3 in^2

Using minimum area of 0.3 in^2,

A = (pi/4)(d^2)

0.3 in^2 = (pi/4)(d^2)

d = 0.618 inches

diameter, d = 0.618 inches

7 0

3 years ago

1.The growth of a sample of bacteria can be modeled by the function b(t)=100(1.06)t where b is the number of bacteria and t is t

qwelly [4]

Given:

The growth of a sample of bacteria can be modeled by the function

$b(t)=100(1.06)^t$

where, b is the number of bacteria and t is time in hours.

To find:

The number of total bacteria after 3 hours.

Solution:

We have,

$b(t)=100(1.06)^t$

Here, b(t) number of total bacteria after t hours.

Substitute t=3 in the given function, to find the number of total bacteria after 3 hours.

$b(t)=100(1.06)^3$

$b(t)=100(1.191016)$

$b(t)=119.1016
$

Therefore, the number of total bacteria after 3 hours is 119.1016.

4 0

3 years ago