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Marta_Voda [28]
3 years ago
7

Which expression has a positive value? (-5)(-9) 2-4 12-1-4) -3+(-7)

Mathematics
2 answers:
11111nata11111 [884]3 years ago
7 0

Answer:

(-5)(-9)

Step-by-step explanation:

any negative multiplied by any negative will always equal a positive

krek1111 [17]3 years ago
7 0

Answer:

the first and third one

Step-by-step explanation:

- × - is positive so 45

2-4 = -2

12-1-4 = 7

plus × minus is minus so -4

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A number cube labeled 1 through 6 is rolled 5 times. What is the probability of landing on 5 each time?
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Answer:

1/6

Step-by-step explanation:

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3 0
3 years ago
Determine the type and number of solutions of −4x2 − 3x + 7 = 0.
Kaylis [27]

Answer:

Step-by-step explanation:

You have to use the discriminant for this. If the quadratic is -4x^2-3x+7, then

a = -4, b = -3, and c = 7. The formula for finding the discriminant is

D=b^2-4ac which comes from the quadratic formula, but without the square root sign. Filling in:

D=(-3)^2-4(-4)(7) which simplifies down to

D = 9 + 112 so

D = 121. This is a perfect square, so the solutions will be 2 real. Just so you know, you will NEVER have a solution like the one offered in the third choice down. If you have one imaginary root, you will ALWAYS have a second by the conjugate rule.

7 0
3 years ago
Por favor me puede ayudar ​
Eduardwww [97]

<h2><u>POR FAVOR MARQUE BRAINLIEST!</u></h2>

<u></u>

Answer:

Vamos a resolver!

Step-by-step explanation:

8 / 1/4 + 2 - 1/2 / 1/4

= (8 ÷ 0.25) + 2 - (0.5 ÷ 0.25)

= (8 ÷ 0.25) - (0.5 ÷ 0.25) + 2

= 32 - 2 + 2

= 30 + 2

= 32

Tu respuesta es 32 .

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4 years ago
Which of the following statements is true?
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The option is C) RNA is single stranded

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What is 3 1/4 =3 /12
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Please rewrite this question in an understandable form.
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