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notsponge [240]
3 years ago
5

Erwan accelerates his car at 3 km/h per second while overtake a lorry. If he drives with a speed of 90 km/h, calculate his speed

after 10 seconds
Mathematics
1 answer:
Luba_88 [7]3 years ago
8 0

3 km / h every second for 10 seconds = 30 km / hr

90 + 30 = 120 km / hr

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marusya05 [52]

Answer:

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4t+2s+w+u+x+v

4 0
3 years ago
Please Help! I need help to my math question
dem82 [27]
First you need to get rid of the parenthesis by distributing the 0.6 to each term inside.
(0.6)(10n) + (0.6)(25) =10+5n
6n +15 = 10+5n subtract the 5n on both sides and subtract 15 from both sides
6n-5n = 10-15 
n=-5
5 0
3 years ago
Read 2 more answers
A Wooden board is leaning against the house the base of the board is 10 feet from the base of the house and the base of the boar
astra-53 [7]

Answer: 12.20 feet.

Step-by-step explanation:

Observe in the figure attached that a right triangle is formed.

Then, you  need to remember the identity:

cos\alpha=\frac{adjacent}{hypotenuse}

In this case you can identify that:

adjacent=10\\hypotenuse=x

\alpha=35\°

Then, to find the length of the wooden board (x), you need to substitute values and solve for x.

Therefore, you get:

cos(35\°)=\frac{10}{x}\\\\(x)(cos(35\°))=10\\\\x=\frac{10}{cos(35\°)}\\\\x=12.20

The length of the wooden board is: 12.20 feet.

5 0
3 years ago
This probability distribution shows the typical distribution of pitches thrown to a batter in a given at bat in a baseball game.
Vikki [24]

Answer:

0.35

Step-by-step explanation:

This probability distribution is shown below:

Pitch                   1            2        3          4         5

Frequency         15         20      40        15        10

Probability         0.15     0.2      0.4      0.15      0.1

The probability that the pitcher will throw fewer than 3 pitches to a batter = P(X < 3)

X  is the number of pitches thrown. Therefore:

P(X < 3) = P(X = 1) or P(X = 2)

The additive rule pf probability states that if two events X and Y are dependent events, the probability of X or Y occurring is the sum of their individual probability.

P(X < 3) = P(X = 1) or P(X = 2) = P(X = 1) + P(X = 2) = 0.15 + 0.2 = 0.35

The probability that the pitcher will throw fewer than 3 pitches to a batter = 0.35

8 0
3 years ago
At Scott's Laundromat, the washing machines accept only quarters and
Y_Kistochka [10]

Answer:

8 quarters and 12 nickles

Step-by-step explanation:

8*25=2.00

12*.05=.60

4 0
3 years ago
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