# Convert the verbal expression with its equivalent algebraic expression. Use r for any unknowns and simplify your answer. If applicable,

Convert the verbal expression with its equivalent algebraic expression. Use r for any unknowns and simplify your answer. If applicable, put the constant at the beginning of the expression. three-quarters the sum of seven and a number The mathematical equivalent of this phrase is:​

## This Post Has 9 Comments

1. 25linm says:

Asan yung ipapasagot mo???

2. pikachu20040 says:

$9x^2+5$

Step-by-step explanation:

Let x represent the unknown number.

We are asked to convert the verbal expression with its equivalent algebraic expression..

Five more than a nine times square of a number.

Square of the number would be $x^2$.

Nine times square of the number would be 9 multiplied by  $x^2$ as:

$9x^2$.

Five more than a nine times square of a number would be $9x^2$ plus 5 as:

$9x^2+5$

Therefore, our required expression would be $9x^2+5$.

3. gdhshwjfs says:

T = 42.08  °C

Explanation:

Using the expression,

$\ln \dfrac{k_{1}}{k_{2}} =-\dfrac{E_{a}}{R} \left (\dfrac{1}{T_1}-\dfrac{1}{T_2} \right )$

Wherem

$k_1\ is\ the\ rate\ constant\ at\ T_1$

$k_2\ is\ the\ rate\ constant\ at\ T_2$

$E_a$ is the activation energy

R is Gas constant having value = 8.314 J / K mol

Thus, given that, $E_a$ = 45.6 kJ/mol = 45600 J/mol (As 1 kJ = 1000 J)

$k_2=2\times k_1$

$k_1=0.0160s^{-1}$

$T_1=30\ ^0C$

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15

So,

T = (30 + 273.15) K = 303.15 K

$T_1=303.15\ K$

So,

$\ln \dfrac{k_{1}}{2\times k_{1}} =-\dfrac{45600}{8.314} \left (\dfrac{1}{303.15}-\dfrac{1}{T_2} \right )$

$\ln \dfrac{1}{2} =-\dfrac{45600}{8.314} \left (\dfrac{1}{303.15}-\dfrac{1}{T_2} \right )$

$8.314\ln \left(2\right)=-45600\left(\frac{1}{303.15}-\frac{1}{T_2}\right)$

$8.314\ln \left(2\right)=-150.42058+\frac{45600}{T_2}$

$144.65775 =\frac{45600}{T_2}$

$T_2=\frac{45600}{144.65775}$

$T_2=315.23\ K$

Conversion to °C as:

T(K) = T( °C) + 273.15

So,

315.23 = T( °C) + 273.15

T = 42.08  °C

4. Gheaton6274 says:

Question:

Select expression that is mathematically equivalent to

$\frac{x}{y-z} + (a-b)*c$

a) $x/y - z + (a - b) * c$

b) $x/(y - z) + (a - b) * c$

c) $x/y - z + a - b * c$

d) $x/(y - z) + a - b * c$

$x/(y - z) + (a - b) * c$

Step-by-step explanation:

Given

$\frac{x}{y-z} + (a-b)*c$

Required

Determine its equivalent

Start by writing y - z in bracket;

$\frac{x}{y-z} + (a-b)*c$

becomes

$\frac{x}{(y-z)} + (a-b)*c$

When - is used as divide, it is equivalent to /

The given expression can then be rewritten as

$x/(y - z) + (a - b) * c$

Hence;

$\frac{x}{y-z} + (a-b)*c$ is equivalent to $x/(y - z) + (a - b) * c$

5. alialoydd11 says:

Explanation:

2t2 is 1 1t1 = 11 11t2

1212t12 = 0 0t2=2 der fo it 2

6. clairajogriggsk says:

p - 6

I hope this helps!

7. Expert says:

y - y1 = m(x- x1)

y - (-5) = 2/3(x -0)

y + 5 = 2/3x

y = 2/3x - 5

8. Expert says:

10/60

step-by-step explanation:

if you divide 10 by 60 the answer is 0.166666 while if you divide or solve the other problems it equals 0.6

9. jasonlawrencejr6844 says:

Sum is addition, less than is subtraction, equals is is, division is of and multiplication is per