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2 years ago

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In a class of 22 students, 13 have a brother and 15 have a sister. There are 3 students who do not have any siblings. What is th

e probability that a student has a brother given that they do not have a sister?

1 answer:

Aneli [31]2 years ago

7 0

Answer:

1/4

Step-by-step explanation:

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ashur solves the following system of linear euations. -3a + 7b = -16. -9a + 5 b = 16 which statement is true about the solution

tiny-mole [99]

Answer:

a=-4, b=-4. (-4, -4).

Step-by-step explanation:

-3a+7b=-16

-9a+5b=16

-------------------

-3(-3a+7b)=-3(-16)

-9a+5b=16

---------------------------

9a-21b=48

-9a+5b=16

------------------

-16b=64

b=64/-16

b=-4

-3a+7(-4)=-16

-3a-28=-16

-3a=-16+28

-3a=12

a=12/-3

a=-4

6 0

3 years ago

How do I simplify 3⁶ x 3⁵

elena55 [62]

Answer:

$3^{11}$

Step-by-step explanation:

Using the rule of exponents

$a^{m}$ × $a^{n}$ ⇔ $a^{(m+n)}$ thus

$3^{6}$ × $3^{5}$ = $3^{(6+5)}$ = $3^{11}$

6 0

3 years ago

Read 2 more answers

Suppose your annual starting salary is $55,183. After working for a few years, you start to get yearly raises. If you get a 0.6%

Marianna [84]

Answer:

The salary after all the increment = $62899.0879

Step-by-step explanation:

It is given that starting annual salary = $55183

There is given that there are there are three time increment of 0.6 %

So salary after 0.6% increment of 3 times = $55183\times (1+\frac{0.6}{100})^3$ = $56182.2656

After that there is other increment of 1.9 % that is 6 times

So salary after this increment = $56182.2656\times (1+\frac{1.9}{100})^6=62899.0879$

So the salary after all the increment = $62899.0879

4 0

2 years ago

Jon ran around a track that was 1\8 of a mile long.He ran around the track 24 times.How many miles did Jon run?

balandron [24]

Answer:

3 miles

Step-by-step explanation:

5 0

3 years ago

Solve 16x+9=9y−2x16x+9=9y−2x for y

denis23 [38]

16x + 9 = 9y-2x Add 2x to both sides
18x + 9 = 9y Divide both sides by 9
2x + 1 = y Switch the sides to make it easier to read
y = 2x + 1

6 0

3 years ago