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jasenka [17]
3 years ago
15

Dragonflies today have a wingspan of 6 inches. The ancestors of the dragonfly had a wingpan 5 times greater. How long was the wi

ngspan of the dragonfly's ancestors?
Mathematics
1 answer:
ludmilkaskok [199]3 years ago
5 0
I believe The answer is 30 inches because 6x5 is 30
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Finn and Ellie sell oranges at a produce stand. Finn earns $5 for each crate of oranges he sells. At the end of the week, Ellie
KatRina [158]

The second term in the expression represents a. Finn's earnings at the end of the week.

To answer the question, we need to know what mathematical expressions are.

<h3>What are mathematical expression?</h3>

Mathematical expressions are expressions that show the relationship between two variables.

<h3>Finn's earnings</h3>

Now, let z be the number of crates Finn sold.

Since Finn earns $5 per crate, the total amount he earns at the end of the week is t = amount per crate × number of crates

= 5 × z

= 5z

<h3>Ellie's earnings</h3>

Now since Ellie earns $20 more than Finn, the amount Ellie earns is

T = 20 + t

= 20 + 5z.

So, 5z the second term in the expression represents Finn's earnings at the end of the week.

So, the second term in the expression represents a. Finn's earnings at the end of the week.

Learn more about mathematical expressions here:

brainly.com/question/11258067

#SPJ1

3 0
2 years ago
Explain why the graph of the equation g(x)=-(x+1)^2-3 would be a parabola opening downward.
otez555 [7]

g(x) = -(x + 1)^2 - 3

Let's simplify this equation

g(x) = -(x^2 + 2x + 1) - 3

Distribute the negative sign

g(x) = -x^2 - 2x + 1 - 3

Combine like terms

g(x) = -x^2 - 2x - 2

The value of a = -2 and this value is LESS THAN 0

6 0
3 years ago
Alex and bob are playing 5 chess games. Alex is 3 times more likely to win than bob. What is the probability that both of them w
givi [52]

Answer:

12.2%

Step-by-step explanation:

Lets firstly find out the probabilities for Alex and Bob. We know that the prb that Alex wins is 3 times the prob for Bob, so:

P(A) = 3P(B)

And, as these values are probabilities they must sum 1:

P(A) + P(B) = 1

Replacing the first equation in the second:

3P(B) + P(B) = 1

4P(B) = 1

Dividing both sided by 4:

4P(B)/4 = 1/4

P(B) =1/4

So, the probability for Bob is 1/4. Then the probability for Alex is 3*1/4 = 3/4

Now we have to find the probability that both win at least two games. Lets think about the possible combination of cases. As they play 5 games and both have to win at least to there is a remaining game that cane variate, this is, can be won by Alex or Bob. So, we can have:

AABBB

AABBA

Where A is "Alex win" and B is "Bob win" (here we do not pay attention to the order).

Thus, we have to find the probability that Alex wins 3 games and Bob 2 games, and the probability that Alex wins 2 games and Bob 3 games. As the games are independent, i.e., the result of one games does not affect the followings we can just multiply the probabilities:

P(3A and 2B) = (3/4)*(3/4)*(3/4)*(1/4)*(1/4) = 0.42*0.06 = 0.026

P(2A and 3B) = (3/4)*(3/4)*(1/4)*(1/4)*(1/4) = 0.56*0.016 = 0.096

So,

P (at least 2) = P(3A and 2B) + P(2A and 3B) = 0.026 + 0.096 = 0.122 = 12.2%

7 0
3 years ago
Rose hiked at a constant rate of 13.3 miles per day for 7 days. Estimate the number of miles that Rose hiked during that time by
WARRIOR [948]
I think the answer is A 
6 0
3 years ago
Read 2 more answers
Suppose Larry has 16 books and Pat has x books. (Larry still has at least 3 more than Pat.)
zimovet [89]

Answer:

13 ≥ x

Step-by-step explanation:

  • Larry = 16
  • Pat = x

<u>Larry has at least 3 more than Pat</u>

  • 16 ≥ x + 3

<u>Simplified</u>

  • 16-3  ≥ x + 3 - 3
  • 13 ≥ x
4 0
3 years ago
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