All categories

4 years ago

HELPPPPPP Question: In pic

Mathematics

2 answers:

nasty-shy [4]4 years ago

5 0

Answer:

5 $\frac{2}{3}$ I believe

Zina [86]4 years ago

4 0

Answer:

68/12

Step-by-step explanation:

12x5 is 60 then add the 8

You might be interested in

Please help math experts need your help 15 points !

Alinara [238K]

Answer:

12 = -3 - 3x

Step-by-step explanation:

Same concept as the last question I answered. First, let's derive a formula from the given model. So we have 3 negative x and 3 negative 1 which equal to 12 positive ones, this can be written as:

-3x - 3 = 12

which can be rewritten as

12 = -3 - 3x

7 0

3 years ago

The rate constant for this first‑order reaction is 0.740 s − 1 0.740 s−1 at 400 ∘ C. 400 ∘C. A ⟶ products A⟶products How long, i

sesenic [268]

Answer:

1.668 S

Step-by-step explanation:

We are given that

$A\rightarrow$ Product

For first order reaction,

$t=\frac{1}{k}ln\frac{A_0}{A}$

$t=\frac{2.303}{k}log\frac{A_0}{A}$

Rate constant=k= $0.740s^{-1}$

Temperature= $T=400^{\circ}$

We have to find the time taken by the reaction when concentration of A to decrease from 0.790 M to 0.230 M.

$A_0=0.79 M$

$A=0.230$

Substitute the values then we get

$t=\frac{2.303}{0.740}log\frac{0.79}{0.23}$

$t=1.668 s$

Hence, it would take 1.668 s for the concentration of A to decrease from 0.790 M to 0.230 M.

4 0

4 years ago

Hi can u plzz help me with these thank you!!!

julsineya [31]

Answer:

$Radius = 5ft$

$Circumference = 31.4\ ft$

$Perimeter = 25.12\ ft$

Step-by-step explanation:

Solving (1):

Given

$Diameter = 10ft$

Required

Determine the radius and circumference

Radius is calculated as follows:

$Radius = \frac{1}{2} * Diameter$

$Radius = \frac{1}{2} * 10ft$

$Radius = 5ft$

The circumference is calculated using:

$Circumference = 2 * \pi * Radius$

$Circumference = 2 * 3.14 * 5ft$

$Circumference = 31.4\ ft$

Solving (2):

Given

$R = 4ft$

Assume that the window is circular, the perimeter is calculated as follows:

$Perimeter = 2 * \pi * R$

$Perimeter = 2 * 3.14 * 4ft$

$Perimeter = 25.12\ ft$

4 0

3 years ago

-X/3=9 linear equations

Pepsi [2]

Answer:

x = -27

Step-by-step explanation:

-x/3 = 9

Multiply each side by -3

x/-3 * -3 = 9*-3

x = -27

3 0

3 years ago

Read 2 more answers

Please help with this question. <br> It’s an assignment that’s due at 11:30

Aliun [14]

Answer:205

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers