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3 years ago

12

Tina plans to have two children but doesn't know if they will be boy-boy, girl-girl, or a boy and a girl. What is the probabilit

y that she will have two girls?

1 answer:

vazorg [7]3 years ago

3 0

Answer: 25%

Step-by-step explanation:

Boy =50%

Girl =50%

Girl + Girl =25%

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Fernando factored 45y^6 as (9y^3)(5y^3).

marishachu [46]

Answer:

They both factored it correctly

Step-by-step explanation:

To find the one that was factored correctly, we expand the two of them and compare with $45y^6$ .

Fernando

$(9y^3)(5y^3)$

= $9 * 5 * y^3 * y^3$

= $45y^6$

Salma

$(3y)(15y^5)$

= $3 * 15 * y * y^5$

= $45y^6$

As we can see, they both factored it correctly.

4 0

3 years ago

The graph below could be the graph of which exponential function

Artist 52 [7]

Answer:

D

Step-by-step explanation:

3 0

2 years ago

You know 4−3i is the complex conjugate of 4+3i. If you multiply the denominator of −2+5i4+3i by 4−3i, what will you get? Enter y

Alona [7]

Answer:

25

Step-by-step explanation:

Given

(-2 + 5i)/(4 + 3i)

Required

Multiply the denominator by 4 - 3i

The denominator of the fraction above is 4 + 3i

When multiplied by 4 - 3i, the result is as follows;.

Result = (4 + 3i)(4 - 3i)

Expand

Result = 4(4 - 3i) + 3i(4 - 3i)

Open both brackets (take it one at a time)

Result = 4 * 4 - 4 * 3i + 3i(4 - 3i)

Result = 16 - 12i + 3i(4 - 3i)

Open the second bracket

Result = 16 - 12i + 12i - 3i * 3i

Result = 16 - 12i + 12i - 9i²

In complex numbers, i = √-1

i² = (√-1)²

i² = √-1 * √-1

i² = -1

The expression

Result = 16 - 12i + 12i - 9i²

Becomes

Result = 16 - 12i + 12i - 9(-1)

Result = 16 - 12i + 12i + 9

Collect like terms

Result = 16 + 9 + 12i - 12i

Result = 25 + 0

Result = 25

Hence, when the denominator of the fraction is multiplied by 4 - 3i, the result is 25

3 0

3 years ago

12.8 x 3/4 I don’t know it

scoray [572]

48/5 or 9 3/5

12.8/1 x 3/4 = 38.4/4

Or multiply 12.8/1 by 10 ==> 128/10

128/10 x 3/4 = 384/40

Hope this helps!

7 0

2 years ago

Read 2 more answers

I WIL GIVE BRAINILIEST IF YOU GIVE EXPLANATION FOR BOTH please dont let me fail

riadik2000 [5.3K]

Answer:

1. 2/5

2. 2/5

Step-by-step explanation:

Brainiest ?

3 0

3 years ago