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kolbaska11 [484]
3 years ago
13

Heedayati drives for 180 km from Town P to Town Q. The average speed of Heedayati is 60 km/h. Heedayati took 45 minutes less for

the return trip from Town Q to Town P. Calculate the average speed for the return trip of Heedayati from Town Q to Town P.​
Mathematics
1 answer:
Nadusha1986 [10]3 years ago
7 0

Answer:

180 divided by 45 is equal to 4km/h

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the area of a parallelogram shape land is on the square and length of its two adjacent sides are 25 m and 17 M find its diagonal
Alex787 [66]

Step-by-step explanation:

Draw diagonal AC

The triangle ABC has sides 17 and 25

Say AB is 17, BC is 25

Draw altitude on side BC from A , say h

h = 17 sin B

Area = 25*17 sin B = 408

sin B = 24/25

In ∆ ABC

Cos B = +- 7/25

= 625 + 289 — b^2 / 2*25*17

b^2 = 914 — 14*17 = 676

b = 26

h = 17*24/25 = 408/25 = 16.32

Draw the second diagonal BD

In ∆ BCD, draw altitude from D, say DE =h

BD^2 = h^2 + {(25 + sqrt (289 -h^2) }^2

BD^2 = 16.32^2 + (25 + 4.76)^2

= 885.6576 + 266.3424

BD = √ 1152 = 33.94 m

6 0
3 years ago
8 balls cost 16 dollars.how much do 32 balls cost
meriva
8 balls = 16
1 ball = 2
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5 0
3 years ago
Bridget is making greeting cards, which she will sell by the box at an art fair. She paid $30 for a booth at the fair and the ma
LiRa [457]

Answer:

when she sold 10 cards, it will cover all her cost.

Step-by-step explanation:

Profit(without charge of booth)=5x-2x

Profit=3x-30

Calculating:

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Solve the equation. 3(2x+2)=9x+2-3x+4
inessss [21]

Answer: x = 4

Step-by-step explanation:

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3 years ago
A bag contains 5 red marbles, 4 blue marbles and 6 green marbles. If three marbles
Nina [5.8K]

Answer:

The probability of drawing three red marbles is 1/27, or about 3.71%

Step-by-step explanation:

Add all the marbles:

5 + 4 + 6 = 15

Find favourable outcomes:

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The probability for drawing a red marble is:

5/15 or 1/3

Multiply this ×3 to find the probability of drawing three red marbles.

1/3 × 1/3 × 1/3 = 1/27

1 ÷ 27 = 0.0370370370 ... repeating

8 0
3 years ago
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