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Masteriza [31]
3 years ago
13

Find the sum: (3x2 + 5x − 8) + (5x2 − 13x − 5)

Mathematics
2 answers:
Neko [114]3 years ago
7 0
(3x² + 5x - 8) + (5x² - 13x - 5)

group like terms

3x² + 5x² + 5x - 13x - 8 - 5

8x² - 8x - 13
sergejj [24]3 years ago
4 0
I showed my work too. hopefully this helps

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A corporation has 11 manufacturing plants. Of these, seven are domestic and four are outside the United States. Each year a perf
nikdorinn [45]

Answer:

The probability that a performance evaluation will include at least one plant outside the United States is 0.836.

Step-by-step explanation:

Total plants = 11

Domestic plants = 7

Outside the US plants = 4

Suppose X is the number of plants outside the US which are selected for the performance evaluation. We need to compute the probability that at least 1 out of the 4 plants selected are outside the United States i.e. P(X≥1). To compute this, we will use the binomial distribution formula:

P(X=x) = ⁿCₓ pˣ qⁿ⁻ˣ

where n = total no. of trials

           x = no. of successful trials

           p = probability of success

           q = probability of failure

Here we have n=4, p=4/11 and q=7/11

P(X≥1) = 1 - P(X<1)

          = 1 - P(X=0)

          = 1 - ⁴C₀ * (4/11)⁰ * (7/11)⁴⁻⁰

          = 1 - 0.16399

P(X≥1) = 0.836

The probability that a performance evaluation will include at least one plant outside the United States is 0.836.

7 0
3 years ago
Area of a square is 80cm square what is it perimeter
tatyana61 [14]
The perimeter of the square is 35.78

The formula for the perimeter of a square using its area is:
P = 4\sqrt{A}
7 0
3 years ago
In the figure shown, line AB is parallel to line CD.
disa [49]

Answer:

Part A: <em>x = </em>55°

Step-by-step explanation:

<em>Part A Work:</em>

x + 65 = 120

<em>Part B Work:</em>

<em> </em>The transversal passes through the 2 conforming lines which allows you to use rules such as opposing interior angles. <em> </em>

<em> </em>

<em>hope this helps!</em>

<em>- Kiniwih426</em>

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<em> </em>

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4 0
3 years ago
dean counted 10 red cards, 10 black catds, and 20 blue cards in a deck of cards. what is the ratio of red cards to all cards?
miv72 [106K]

Answer:

10:40

Step-by-step explanation:

10+10+20=40

10 red cards

4 0
3 years ago
Write log(x + 2) = 3 in exponential form.<br> Huh
ahrayia [7]
(x + 2) = 3
-2 -2
0 1
x = 1
5 0
3 years ago
Read 2 more answers
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