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sweet [91]
3 years ago
10

What is the value of the expression -2a +b when a = -2 and b = 4

Mathematics
1 answer:
mel-nik [20]3 years ago
4 0
Answer : 4

Explanation
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The value of the expression
GuDViN [60]

Answer:

The answer is 60

sorry if I am wrong.

5 0
4 years ago
trip in space 4.5 x 10 exponent 9 miles will take 9 1/2 years how many miles will space craft travel per year
boyakko [2]

(4.5 x 10⁹ miles) / (9.5 years) = <em>473,684,211 miles per year</em> (average, rounded)

(That's<em>  54,038 miles per hour</em>, average, rounded)


5 0
3 years ago
The square of a number minus the number = 20, Can You form a quadratic equation and factorise it?
frosja888 [35]
Yes you can ... here is an example x^2-x=20,   x^2-X-20  factored is (x-5)(x+4)
7 0
3 years ago
What figure is always a rectangle and a rhombus?
katrin [286]

Answer:

square

Step-by-step explanation:

7 0
3 years ago
Suppose the dial on the spinner is spun 2 times in a row.
Ivenika [448]

The probability of one success and one failure will be 4/9. Table C represents the probability distribution for the variable X.

<h3>What is probability?</h3>

The chances of an event occurring are defined by probability. Probability has several uses in games, in business to create probability-based forecasts,

The dials on the spinner are spun 2 times in a row.

P(dial lands on region)=P(success) = 2/3

P(failure) = 1/3

The probability that the two times dials on the spinner are not spun 2 times in a row.

P = (1/3)² = 1/9

The probability that the two times dials on the spinner are spun 2 times in a row.

P = (2/3)²= 4/9

One may calculate the probability of one success and one failure using the binomial distribution or by simply deducting the probabilities we previously determined from 1.

P = 1 - 1/9 - 4/9

P = 4/9

The probability of one success and one failure will be 4/9.

Hence table C represents the probability distribution for the variable

X.

To learn more about the probability, refer to the link;

brainly.com/question/11234923

#SPJ1

3 0
2 years ago
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