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Komok [63]
3 years ago
5

Mathsgenie.co.uk

Mathematics
1 answer:
ioda3 years ago
6 0

Answer:

180

Step-by-step explanation:

For each boy you choose, you choose one of the 15 girls.

This is the counting principle.

12 * 15 = 180

Answer: 180

You might be interested in
Priscilla can make 4 bracelets in 13 minutes. At this rate, how many bracelets can she make in 26 minutes?
Degger [83]

Answer:

8

Step-by-step explanation:

To find the answer, multiply 4 and 2 together, since 13 is 2 times less than 26.

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

Let's double check,

26 ÷ 13 = 2

so,

4 × 2 = 8

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

Have a good day :)

4 0
3 years ago
Give each rate in miles per hour:
DIA [1.3K]

a) 9/212 = #mph

b)0.000142045 Miles / 0.000277778 hours = # mph

Step-by-step explanation:

a) 9/212 = #mph

b)

1)9 inches divide the length value by 63360 is 0.000142045 Miles

2) 1 hour  3600 seconds in ones hour so 1/3600 =0.000277778

3) take miles/hour

0.000142045 Miles / 0.000277778 hours = # mph

6 0
3 years ago
The equation ​yˆ=−6.2x2+41.5x−5.6​ approximates the average number of cars that pass through an intersection x hours after 3:00
Neko [114]

Answer:

59

Step-by-step explanation:

5: 30 pm is 2.5 hours after 3 : 00 pm

Substitute x = 2.5 into the equation

y = - 6.2(2.5)² + 41.5(2.5) - 5.6

  = - 38.75 + 103.75 - 5.6

  = 59.4

The average number of cars is 59

8 0
3 years ago
How can 12 x 50 help find 12 x 49
Dafna1 [17]
12×50=600
12×49=588
600-12=588
7 0
3 years ago
Read 2 more answers
The figure shown to the right is an isosceles triangle, and
Mrrafil [7]

Answer:

We know that an isosceles triangle has 2 of its sides being equal

With R, being the midpoint of PS, we can say that

PR=RS

Noting that, with R as midpoint, we can conclude that RT is a straight line which divides angles TPR and TSR into 2 right angle triangles

Step-by-step explanation:

therefore angle at P is 45°. Angle at S also 45°

Therefore PT = TS

This is because T is 45 degrees as well as P which is also 45 degrees

angle in triangle PTS is 180 degrees

R is 90 degrees, P is 45 degrees and the whole of T is also 45 degrees(which has been split into 2)

3 0
3 years ago
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