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Darya [45]
3 years ago
7

the probability that a couple will have two children, so that their first child is a boy and their second child is a girl is 1/2

. True or False
Mathematics
2 answers:
a_sh-v [17]3 years ago
7 0

well you cant chose what gender your child will turn up so it can be b/b (boy, boy) g/b, g/g, b/g

GrogVix [38]3 years ago
4 0

The answer is false.


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Aaron is 5 years younger then Ron. Four years later, Ron will be twice as old as Aaron. Find their present ages.​
Katyanochek1 [597]

Answer:17

Step-by-step explanation:

tommy  was 14 ten years ago 2times old as ron.14/2=7 . so we add the 10 years ron is 17..c;

6 0
2 years ago
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Arianna is working two summer jobs, making $6 per hour walking dogs and making $10 per hour tutoring. In a given week, she can w
Mice21 [21]

Step-by-step explanation:

x = number hours dog walking

y = number hours tutoring

x + y <= 11

6x + 10y >= 80

the solution is the common area below the first line and above the second line.

the first line is above the second line (due to the y-intercept of 11 vs. 8) until the crossing point.

for the crossing point we use the regular equations :

from the first we get

x = 11 - y

using this in the second

6×(11 - y) + 10y = 80

66 - 6y + 10y = 80

4y = 14

y = 14/4 = 7/2 = 3.5

x = 11 - y = 11 - 3.5 = 7.5

so, she has to do at least 3.5 hours tutoring (and then 7.5 hours dog walking) for the minimum of $80 earning, all the way up to the maximum of 11 hours tutoring (and 0 dog walking) for $110 earning.

8 0
2 years ago
39÷(2+1)-2×(4+1)<br><br>PLEASE HELP​
Elza [17]

Answer:

3

Step-by-step explanation:

39 ÷ (2+1) - 2 × (4+1)

Using BODMAS Rule,

= 39 ÷ 3 - 2 × 5

= 13 - 2 × 5

= 13 - 10

= 3

5 0
2 years ago
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NEED HELP ASAP ON THIS QUESTION
andrew11 [14]

Answer:

None of these answers are correct.

Step-by-step explanation:

If a²+b²=c², then 7²+5²=c², then if you solve for c this equals about 8. This is none of the answers mentioned which is 8. Also, a good thing to remember is that the hypotenuse is always larger than the two side lengths. So, since the answer is 8 then it is none of the answers.

7 0
3 years ago
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4. Simplify the expression 9c + 6 -4c -3<br><br> A.13c + 9<br> B. 13c+ -3<br> C.5c + 9<br> D. 5c + 3
Bingel [31]

Answer:

i think it d

Step-by-step explanation:

7 0
3 years ago
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