Ask question

Ask question

All categories

3 years ago

15

A 7th-grade class has 14 girls and 10 boys. An 8th-grade class has 11 girls and 13 boys. What is the probability of picking a st

udent from each class and having them both be girls? (Write answer as simplified fraction)

1 answer:

melomori [17]3 years ago

4 0

Answer:

14>10 11<13

Step-by-step explanation:

You might be interested in

4+6 as a verbal expression

oee [108]

Hi,

"Four plus six" is the verbal expression.

Hope this helps.
r3t40

6 0

3 years ago

Read 2 more answers

At the base of a pyramid, a surveyor determines that the angle of elevation to the top is °. At a point meters from the base, th

riadik2000 [5.3K]

Answer:

$\frac{(\sin 18^\circ)}{75} = \frac{(\sin 35^\circ)}{x}$

Step-by-step explanation:

Incomplete question:

<em></em> $\angle CBD = 53^\circ$ <em></em>

<em></em> $\angle CAB = 35^\circ$ <em></em>

<em></em> $AB = 75$ <em></em>

<em></em>

<em>See attachment for complete question</em>

Required

Determine the equation to find x

First, is to complete the angles of the triangle (ABC and ACB)

$\angle ABC + \angle CBD = 180$ --- angle on a straight line

$\angle ABC + 53= 180$

Collect like terms

$\angle ABC =- 53+ 180$

$\angle ABC =127^\circ$

$\angle ABC + \angle ACB + \angle CAB = 180$ --- angles in a triangle

$\angle ACB + 127 + 35 = 180$

Collect like terms

$\angle ACB =- 127 - 35 + 180$

$\angle ACB =18$

Apply sine rule

$\frac{\sin A}{a} = \frac{\sin B}{b}$

In this case:

$\frac{\sin ACB}{AB} = \frac{\sin CAB}{x}$

This gives:

$\frac{(\sin 18^\circ)}{75} = \frac{(\sin 35^\circ)}{x}$

4 0

3 years ago

Read 2 more answers

What are the discontinuities of the function f(x) = the quantity x squared minus 16 over the quantity 4x minus 24?

ANEK [815]

Dividing x^2 - 16 by 4x - 24 gives the quotient (1/4)x + 3/2

y = (1/4)x + 3/2 would be an asymptote ( discontinuity)

Another would be a vertical discontinuity when x = 6 (this would make the denominator 4x-24 = 0.

4 0

3 years ago

Read 2 more answers

A train travels 250 miles in 5 hours. At this rate, how many hours would it take for the train to

Dahasolnce [82]

Answer:

15 hours

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Someone answer this please

irina [24]

Answer:

y = - 27/5

Step-by-step explanation:

4(3) - 5y = 39

12 - 5y = 39

-5y = 39 - 12 = 27

y = - 27/5

7 0

2 years ago