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DedPeter [7]
4 years ago
14

Which pair shows equivalent expressions?

Mathematics
1 answer:
dalvyx [7]4 years ago
3 0
-2(x+5)=-2*x-2*5=-2x-10
<span> Correct answer: -2x-10=-2(x+5)</span>
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HURRY!!! HURRY!!! HURRY!!!
podryga [215]

x = \frac{3}{2} ± \frac{1}{2}i

rearrange the equation and equate to zero

2x² - 6x = - 5 ⇒ 2x² - 6x + 5 = 0

this doesn't factor with integers, hence use the quadratic formula to solve

with a = 2, b = - 6 and c = 5

x = (6 ± √(36 - 40 ) )/4

  = (6 ± √(-4) ) / 4

  = (6 ± 2i ) / 4

x = \frac{3}{2} ± \frac{1}{2}i



8 0
3 years ago
Read 2 more answers
What is the probability of at least 2 people having the same birthday as you in a class of 29 students?
Leno4ka [110]

Answer:

The chance that the second person has the same birthday is 1/365. To find the probability that both people have this birthday, we have to multiply their separate probabilities. (365/365) * (1/365) = 1/365, or about 0.27%

4 0
3 years ago
I need help on number 18
galina1969 [7]
The expression is x=3 * 4. x=12
4 0
4 years ago
Find the solution to the system of equations: x 3y = 7 and 2x 4y = 8 1. isolate x in the first equation: 2. substitute the value
DIA [1.3K]

The solution to the system of equation are x = -2 and y = 3

<h3>How to find the solution of a system of equation?</h3>

x + 3y = 7

2x + 4y = 8

Let's isolate x in the first equation

x = 7 - 3y

substitute the value of x in the second equation.

Therefore,

2(7 - 3y) + 4y = 8

14 - 6y + 4y = 8

-2y = 8 - 14

-2y = -6

y = -6 / -2

y = 3

Hence,

x + 3(3) = 7

x = 7 - 9

x = -2

learn more on equation here: brainly.com/question/12926248

#SPJ1

4 0
2 years ago
What is the easiest way to find the square root of a number?
klio [65]

Answer:

use a calculator

Step-by-step explanation:

best trick

6 0
3 years ago
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