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2 years ago

I need help on 21 . Please

Mathematics

1 answer:

kupik [55]2 years ago

4 0

Answer:

Air travels 6,920 meters in 20 seconds.

Step-by-step explanation:

If in one second air travels 346 meters, and you want to find out how many meters air travels in 20 seconds, then just multiply 346 by 20.

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How will the federal tax affect a gross biweekly pay of $740 for a single person claiming 1 exemption?

Novosadov [1.4K]

Sorry this is late but for anyone who still needs it the answer is D. It decreases gross pay by $65.

I just had this on my test, hope it helps :)

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2 years ago

Read 2 more answers

I need help community

Tamiku [17]

Answer:

Option C, F(x) = (x+2)/(x+1)

Answered by GAUTHMATH

3 0

2 years ago

10) Which two ratios form a proportion? A) 1 : 2 and 4 : 2 B) 1 : 2 and 6 : 3 C) 2 : 1 and 2 : 4 D) 2 : 1 and 6 : 3

Likurg_2 [28]

Answer:

2/1and6/3 because if you do cross multilication they both equal 6

Step-by-step explanation:

8 0

2 years ago

If a spring is oscillating (moving) according to the velocity equation v(t) = 2sin(t) (in ft/s), then what is its displacement o

Feliz [49]

ANSWER

4 ft

EXPLANATION

The velocity equation of the oscillating spring is given by the function.

$v(t)=2 \sin(t) \: \: {ms}^{ - 1}$

To find the displacement function, we need to to Integrate the velocity function.

$s(t) = \int \: 2 \sin(t) dt$

$s(t) = - 2 \cos(t) + k$

At time t=0, there was no displacement.

This implies that,

$s(0) = 0$

$0= - 2 \cos(0) + k$

$0= - 2 + k$

$k = 2$

The displacement function then becomes,

$s(t) = - 2 \cos(t) + 2$

To find the displacement over the first π seconds, we put

$t = \pi$

into the equation for the displacement to get,

$s(\pi) = - 2 \cos(\pi) + 2$

$s(\pi) = - 2 ( - 1) + 2$

$s(\pi) = 2 + 2 =4 ft$

7 0

2 years ago

Maddie buys 3 sodas for $2 each. she pays with cash and receives $4 in change. write an equation that can be used to find d, the

Ierofanga [76]

3×2=6+4=d the 3×2 is how much the cost is and 6+4 is 10 so she paid 10 dollars

3 0

2 years ago