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Step2247 [10]
3 years ago
9

What is another way to write 138-(-89)?

Mathematics
1 answer:
Illusion [34]3 years ago
8 0
138+89 because two negatives make a positive.
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Identify the solutions to the quadratic equation.
faltersainse [42]

Answer:

A and E

Step-by-step explanation:

x²+3x-28=0

x²+7x-4x-28=0

x(x+7)-4(x+7)=0

(x-4)(x+7)=0

x=4, x= -7

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3 years ago
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asambeis [7]

Answer:

Step-by-step explanation:

Equation 2x+15=x+15

x=2x+x ST = 15+15 = 30

3 0
3 years ago
Write a system of equations and solve. Three times the first number minus two times the second number equals -7. The second numb
Fynjy0 [20]

Answer:

  • -1 and 2

Step-by-step explanation:

Let the numbers be x and y

<u>Three times the first number minus two times the second number equals -7:</u>

  • 3x - 2y = -7

<u>The second number equals one less than negative three times the first number:</u>

  • y = -3x - 1

<u>Substitute y in the first equation and solve for x:</u>

  • 3x - 2(-3x - 1) = -7
  • 3x + 6x + 2 = -7
  • 9x = -9
  • x = -1

<u>Find the value of y:</u>

  • y = -3(-1) - 1
  • y = 3 - 1
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The numbers are -1 and 2

8 0
3 years ago
Find the function value f(x)=3x-6,f(-4)
Otrada [13]

Answer:

f(x) = -18

Step-by-step explanation:

f(x) = 3x - 6

f(-4) = 3(-4) - 6

f(-4) = -12 -6

= -18

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8 0
4 years ago
Read 2 more answers
Write the conjugate of the following complex<br> number:<br> -6i
evablogger [386]

Answer:

6i

Step-by-step explanation:

We want to write the conjugate of the complex number:

-6i

Recall that the conjugate of a complex number in the form <em>a</em> + <em>b</em>i is <em>a</em> - <em>b</em>i, and vice versa.

We can rewrite our complex number as:

\displaystyle 0 - 6i

Hence, <em>a</em> = 0 and <em>b</em> = 6.

Then its conjugate will be:

0 + 6i = 6i

4 0
3 years ago
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