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3 years ago

85% of 920 and I would like to know how to do it.

Mathematics

2 answers:

Darya [45]3 years ago

7 0

85% of 920
85% * 920
85/100 * 920
0.85 * 920
doing work . . .
782
Answer : 782

*Hope that helps :)*

dem82 [27]3 years ago

4 0

change the 85% to a decimal that equals 0.85

multiply 920 * 0.85

that equals 782

782 is your answer

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4 years ago

A particle is moving with the given acceleration function and initial conditions. Find the velocity function and the position fu

Lerok [7]

Answer:

The velocity function is the particle is $v(t)=-2\cos (t)-4\sin (t)-1$ .

Step-by-step explanation:

The acceleration function of a moving particle is

$a(t)=2\sin (t)-4\cos (t)$

The initial conditions are v(0) = −3, s(0) = 5.

Integrate the acceleration function with respect to time to find the velocity function.

$\int a(t)=\int (2\sin (t)-4\cos (t))dt$

$v(t)=-2\cos (t)-4\sin (t)+C_1$

Use the initial condition v(0) = −3 to find the value of C₁.

$-3=-2\cos (0)-4\sin (0)+C_1$

$-3=-2(1)-4(0)+C_1$

$-3=-2+C_1$

$-3+2=C_1$

$-1=C_1$

So the velocity function is the particle is

$v(t)=-2\cos (t)-4\sin (t)-1$

Integrate the acceleration function with respect to time to find the position function.

$\int v(t)=\int (-2\cos (t)-4\sin (t)-1)dt$

$s(t)=-2\sin (t)+4\cos (t)-t+C_2$

Use the initial condition s(0) = 5 to find the value of C₂.

$5=-2\sin (0)+4\cos (0)-(0)+C_2$

$5=-2(0)+4(1)+C_2$

$5=4+C_2$

$1=C_2$

So, the position function is the particle is $s(t)=-2\sin (t)+4\cos (t)-t+1$ .

5 0

3 years ago

3. There are 5 routes from station A to station B and 4 routes from station B to C. Answer the questions

Ksivusya [100]

Answer:

A to B 5 routes and B to C 4 routes

Total options:

5*4 = 20

A to C, 20 ways as above calculation.

C to A, 20 ways as well.

Total options:

20 * 20 = 400

A to C, 20 ways

Return to A with different ways:

(5 - 1)(4 - 1) = 4*3 = 12

Total options:

20 * 12 = 240

4 0

3 years ago

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jeka94

Answer:

Step-by-step explanation:

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4 years ago

it takes 10.4 hours to receive a basic flying license. A new license training method using Computer Aided Instruction (CAI) has

Anastasy [175]

Answer:

Test statistic (t) = 0.625

Step-by-step explanation:

Step(i):-

mean of the Population(μ) = 10.4 hours

Sample mean (x⁻) = 10.7 hours

Standard deviation of the sample( S) = 1.44

The level of significance (α= 0.1

Sample size 'n' = 9

Degrees of freedom = n-1 = 9-1 =8

Step(ii):-

Test statistic

$t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }$

$t = \frac{10.7 -10.4}{\frac{1.44}{\sqrt{9} } } =0.625$

8 0

3 years ago