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Marina86 [1]
3 years ago
11

Which of the following is a true statement?

Mathematics
1 answer:
stepladder [879]3 years ago
6 0
We need to find a expression that is true. Let's try out every one of them until we get a right answer.

If n + 14 = -15 then n = -1.07143

Replace n with -1.07143.

-1.07143 + 14 = <span>12.92857
</span>
<span>12.92857 does not equal 15.

</span>So, the first option is incorrect.

<span>If 14 + n = -15, then n = -1

Replace n with -1

14 + (-1) = 13

13 is not equal to -15.

</span><span>If 14 + n = -15, then n = -29.0 

Replace n with -29.0

</span>-29.0 + 14 = -15

This expression is indeed true.

So, the answer to this question is <span>C If 14 + n = -15, then n = -29.0 </span>
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Answer:

1.25b

Step by step explanation:

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The function f(x) = (10)–x is reflected across the x-axis to create the function g(x). Which ordered pair is on g(x)? (–2, 75) (
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Neither point is on either function.
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If I got $5 a week how much money would I have after 3 weeks
tensa zangetsu [6.8K]
You would get $15 in total because 5x3=15.
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Read 2 more answers
Alaina is selling wreaths and poinsettias for her chorus fundraiser. Wreaths cost $27 each poinsettia cost $20 each. If she sold
marishachu [46]

Answer:

The number of wreaths Alaina sells is 9 .

Step-by-step explanation:

As given

Alaina is selling wreaths and poinsettias for her chorus fundraiser.

Wreaths cost $27 each poinsettia cost $20 each.

If she sold 15 poinsettias and made $543.

Let us assume that the number of wreaths Alaina sells = x

As the number of poinsettias  Alaina sells = 15

Than the equation becomes

27x + 15 × 20 = 543

27x + 300 = 543

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27x  = 243

x = \frac{243}{27}

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Therefore the number of wreaths Alaina sells is 9 .

4 0
3 years ago
In a jar, there is a green, a blue, and a red marble. You draw (with replacement) a marble from the jar until you get the green
denpristay [2]

Answer:

The value is P( X = m ) = (\frac{2}{3} )^{m-1 } * \frac{1}{3}

Step-by-step explanation:

From question we are told that

   The number of types of marbles present jar is n  =  3

Generally the probability of drawing a green marble is  

     P(g) =  \frac{1}{3}

Generally the probability of drawing a marble that is not green is  

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From the question we are told that there will be continuous drawing of marbles from the jar (in such a way that after each marble is drawn it is being replaced) until a green marble drawn

  Let m be the number of times marbles has been drawn when a green marble was gotten

it then means that for m - 1 times the marbles where drawn a green marble was not obtain.

Generally the probability drawing m times is mathematically is mathematically represented as

    P( X = m ) = (P(g'))^{m-1 } * P(g)

=>  P( X = m ) = (\frac{2}{3} )^{m-1 } * \frac{1}{3}

7 0
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