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kondaur [170]
3 years ago
5

PLEASE HELP I NEED ANSWER ASAP!! <3 (photo included)

Mathematics
1 answer:
Nezavi [6.7K]3 years ago
8 0

Answer: it would be A

Step-by-step explanation:

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2) What are the possible zeros of the following equation?<br> y = 3x4 + 4x² – 5x + 10
Nana76 [90]

Answer:

Solution:

(4x2 - 2x) - (-5x2 - 8x)

= 4x2 - 2x + 5x2 + 8x.

= 4x2 + 5x2 - 2x + 8x.

= 9x2 + 6x.

= 3x(3x + 2).

Answer: 3x(3x + 2)

4 0
3 years ago
1. The table shows the probabilities of a response chocolate or vanilla when asking a child or adult. Use the formula for condit
Stels [109]
\begin{matrix}&\text{chocolate}&\text{vanilla}&\text{total}\\\text{children}&0.14&0.26&0.40\\\text{adults}&0.21&0.39&0.60\\\text{total}&0.35&0.65&1.00\end{matrix}

a. "Chocolate" and "Adults" (whatever those mean) will be independent as long as

P(\text{chocolate}\cap\text{adults})=P(\text{chocolate})\cdot P(\text{adults})

"Chocolate" has the marginal distribution given by the second column, with a total probability of P(\text{chocolate})=0.35. Similarly, "Adults" has the marginal distribution described by the third row, so that P(\text{adults})=0.60. Then

P(\text{chocolate})\cdot P(\text{adults})=0.35\cdot0.60=0.21

Meanwhile, the joint probability of "Chocolate" and "Adults" is given by the cell in the corresponding row/column, with P(\text{chocolate}\cap\text{adults})=0.21.

The probabilities match, so these events are indeed independent.

Parts (b) and (c) are checked similarly.

b. Yes;


P(\text{children})\cdot P(\text{chocolate})=0.40\cdot0.35=0.14
P(\text{children}\cap\text{chocolate})=0.14

c. Yes;

P(\text{vanilla})\cdot P(\text{children})=0.65\cdot0.40=0.26
P(\text{vanilla}\cap\text{children})=0.26
5 0
3 years ago
If the perimeter of a rectangle is 38 cm and the area is 78 square cm, then what are the dimensions of the rectangle?
nexus9112 [7]
The length is 13 and the width is 6. The way I figured it out is: find two factors of the area (that if multiplied with each other, they equal the area) and see which ones add up and then get multiplied by two to find the perimeter. I found 6 and 13 and then added them together to get 19. Then I multiplied 19 by two and got 38. This is how I have always done it idk.

Your answer is length = 13 and width = 6.
hope this helps :)
8 0
3 years ago
The population mean for a college Introduction to Biology quiz is 15 points. A sample of 45 high school seniors earns an average
GalinKa [24]

Answer:

C) Reject null, because 15 is not in the interval.

Step-by-step explanation:

3 0
2 years ago
4 passengers in 2 cars = <br> passengers per car
guajiro [1.7K]

Answer:

2 in each car

Step-by-step explanation:

4 0
2 years ago
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