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Igoryamba
3 years ago
9

1. If a cars speed increases from 18 m/s to 20 m/s in 15 seconds, its acceleration is how much :

Mathematics
1 answer:
Paraphin [41]3 years ago
8 0

Answer: Q1: 0.13m/s^2.

Q2: 1.2m/s^2

Q3: C

Q4: 2.8m/s

Q5: 0.63m/s

Q6: 2040km

Step-by-step explanation: acceleration a = (v-u)/t

Q1: a =(20-18)/15

a= 0.13m/s^2

Q2: a =(0.12-0)/0.1

a= 1.2m/s^2

Q3: None

Q4: V= distance/time

V= 12.6/4.5

V= 2.8m/s

Q5: v=2.5/4

v= 0.63m/s

Q6: distance d = v*t

d =85*24

d= 2040km

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What is the value of x to the nearest tenth??
Stolb23 [73]

Answer:

\displaystyle 12,3 ≈ x

Step-by-step explanation:

We have to determine which trigonometric ratio to use, depending on what is displayed for us, and we will be using the <em>cotangent</em> [or <em>tangent</em>] ratio, this time with two angle measures:

\displaystyle cot\:39° = \frac{x}{10} → 10cot\:39° ≈ 12,34897157 ≈ 12,3 \\ \\ tan\:39° = \frac{10}{x} → \frac{10}{tan\:39°} ≈ 12,34897157 ≈ 12,3 \\ \\ \\ OR \\ \\ \\ cot\:51° = \frac{10}{x} → \frac{10}{cot\:51°} ≈ 12,34897157 ≈ 12,3 \\ \\ tan\:51° = \frac{x}{10} → 10tan\:51° ≈ 12,34897157 ≈ 12,3

Extended Information on Trigonometric Ratios

\displaystyle \frac{OPPOSITE}{HYPOTENUSE} = sin\:θ \\ \frac{ADJACENT}{HYPOTENUSE} = cos\:θ \\ \frac{OPPOSITE}{ADJACENT} = tan\:θ \\ \frac{HYPOTENUSE}{ADJACENT} = sec\:θ \\ \frac{HYPOTENUSE}{OPPOSITE} = csc\:θ \\ \frac{ADJACENT}{OPPOSITE} = cot\:θ

I am joyous to assist you anytime.

3 0
3 years ago
Which of the following options have the same value as 5\%5%5, percent of 353535?
professor190 [17]

Answer:

\frac{5}{100}\times35

0.05\times35

Step-by-step explanation:

<u><em>Given:</em></u>

Which of the following options have the same value as 5% 35, percent of 35?

<u><em>Following Options:</em></u>

5 \times 35

\frac{5}{100}\times35

0.5\times0.35

0.05\times35

\frac{5}{10}\times35

<u><em>Solve:</em></u>

5 % = 0.05=\frac{5}{100}

Thus the following options:

5 \times 35           [ False x ]

5 does not equal 5%

\frac{5}{100}\times35         [True √ ]

5% =\frac{5}{100}

0.5\times0.35      [ False x ]

0.5 = 0.50

0.05\times35       [True √ ]

5% = 0.05=\frac{5}{100}

\frac{5}{10}\times35          [ False x ]

\frac{5}{10}=0.50

Therefore, the options [B] \frac{5}{100}\times35 and [D] 0.05\times35 is True.

<em>Kavinsky</em>

3 0
1 year ago
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