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kati45 [8]
2 years ago
14

5. In how many ways can four boys and three girls be seated in a row con taining seven seats ( a ) if they may sit anywhere , (

b ) if the boys and girls must alternate ?​
Mathematics
1 answer:
hram777 [196]2 years ago
7 0
They can be sat 6 different ways
You might be interested in
Jelly ate 3 apples. This represents 50% of the bag of apples. How many apples were originally in the bag
rjkz [21]
<h3>Answer:  6 apples</h3>

x = number of apples originally

50% of x = 0.50*x = amount of apples eaten = 3

0.50x = 3

x = 3/0.50 ....... divide both sides by 0.50

x = 6

You can think of 50% as 1/2. If 3 apples represent half the bag, then the full bag is 6 apples. So half of 6 is 3.

6 0
3 years ago
Read 2 more answers
Factor. w(squared)+18w+81
solong [7]

{w}^{2}  + 18w + 81 \\ (w + 9)(w + 9) \\ or \\ {(w + 9)}^{2}
7 0
3 years ago
two trains ,each 100 m long,moving in opposite directions ,cross each other in 8 seconds .if one is moving twice as fast as the
Feliz [49]

Answer:

60 km/hr

Step-by-step explanation:

100+100

_______         =3x

      8

3x= 200/8

x=200/24 mps

=30mph

final speed is 60km/hr because its 2x's more =2*30=60

8 0
3 years ago
I need help please anybody
antiseptic1488 [7]
135,634,554.....the 3 is in the 10 millions place
so the 3 is 30,000,000
4 0
3 years ago
Please help! Need answer ASAP!
Umnica [9.8K]

Answer:

Step-by-step explanation:

A) identical triangles PSR and PSQ

B) in the given triangle PQR angle P is 90 degrees and PS is perpendicular on QR.  so the angle PSR and angle PSQ is 90 degrees also angles RPS , SPQ are 45 degrees . hence when two angles of a triangle are 90 and 45 degrees.  the third is also 45 degrees. when the three angles of two triangles are equal they are said to be similar

C) the triangle PSR is a isosceles triangle therfore the two sides of the two oposite equal angles must be equal. if RS=4  then SP=4 as well the sides opposite to 45 degrees angles. the third side can be found by using the formula

c²=a²+b²

c²=4²+4²=16+16=32

c=√32=√16*2=4√2

4 0
3 years ago
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