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timama [110]
3 years ago
13

I need help immediately

Mathematics
1 answer:
melamori03 [73]3 years ago
7 0

Answer:

Ima say A

Step-by-step explanation:

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6-129. Nick represented the equation 3(2x+4)=-6 on the Equation Mat below. Choose a strategy to solve for x. You may continue to
poizon [28]

Answer:

x = -3

Step-by-step explanation:

You have the following equation:

3(2x+4)=-6\\

you first you distribution property in order to eliminate the parenthesis:

3*2x+3*4=-6\\\\6x+12=-6

next, you subtract 12 in both sides of the equation:

6x+12-12=-6-12\\\\6x=-18

Finally, you divide the equation by 6 and simplify:

\frac{6x}{6}=-\frac{18}{6}\\\\x=-3

hence, the solution to the equation is x = -3

3 0
3 years ago
Alondra received a 14% hourly raise, but the number of hours worked decreased by 7.5%. If her wage was $10.50 an hour and she wo
Elodia [21]

Answer:

She will earn <u>$442.89</u> in one week after the changes.

And this is <u>more</u> than her previous weekly earnings.

Step-by-step explanation:

Given:

Alondra received a 14% hourly raise, but the number of hours worked decreased by 7.5%. If her wage was $10.50 an hour and she worked 40 hours per week before the changes.

Now, to find money she will earn in one week after the changes.

Her wage was = $10.50.

She worked per week = 40 hours.

So, her salary before changes:

10.50\times 40\\\\=\$420.

Thus, the salary per week before changes is $420.

Now, to get her salary after 14% hourly raise:

10.50+14\%\ of\ 10.50\\\\=10.50+\frac{14}{100} \times 10.50\\\\=10.50+1.47\\\\=11.97

<u>Salary after hourly raise = $11.97 per hour.</u>

Then, to get the number of hours worked decreased by 7.5%:

40-7.5\%\ of\ 40\\\\=40-\frac{7.5}{100} \times 40\\\\=40-3\\\\=37.

<u>Number of hours per week after hours of worked decreased  = 37 hours.</u>

Now, to get the salary after changes:

<em>Salary after hourly raise × number of hours per week after hours of worked decreased</em>

=11.97\times 37

=\$442.89.

<u>Salary after changes in one week = $442.89.</u>

<u><em>As, the previous salary was $420 in one week. </em></u>

<u><em>And after changes this salary is $442.89 in one week which is more than previous. </em></u>

Therefore, she will earn $442.89 in one week after the changes.

And this is more than her previous weekly earnings.

4 0
3 years ago
The axis of symmetry for a quadratic equation can be found using the formula x equals StartFraction negative b Over 2 a EndFract
alexandr402 [8]

Answer:

a=-\frac{b}{2x}

Step-by-step explanation:

The equation of a quadratic function is given as:

ax² + bx + c = 0

where a, b and c are the coefficient in the quadratic equation.

The axis of symmetry of the quadratic equation is given as:

x=-\frac{b}{2a}

To get the equation for a, we have to make a the subject of formula:

x=-\frac{b}{2a}\\\\multiply\ both\ sides\ by \ 2a:\\\\x*2a=-\frac{b}{2a}*2a\\\\2ax=-b\\\\Divide\ through\ by\ 2a\\\\2ax/2a=-b/2a\\\\a=-\frac{b}{2x}

5 0
4 years ago
Read 2 more answers
Solve the equation using the quadratic formula.
Brrunno [24]
Hello:
x²+3x-2 = 0
delta = b²-4ac       a=1       b = 3        c = -2
delta =(3)²-4(1)(-2) =17 =(<span>√17)² 
</span><span>x = −3±√17/2</span>

7 0
3 years ago
A farmer harvested 21 1/4
Oxana [17]

Answer:

and sold it for 26 rupesz m*********d

8 0
3 years ago
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