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4 years ago

I need help!!!!! due now!!!! plz!!!

Mathematics

1 answer:

aleksandrvk [35]4 years ago

4 0

Answer:

12.34

Step-by-step explanation:

For divide by the number then you get the answer

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Which expression is equivalent to −34÷(−812)?

tatyana61 [14]

Answer:

Step-by-step explanation:

hello :

−34÷(−812) means : -34/-812 = 17/406

8 0

3 years ago

The y-value of y = tan(x) when x = -90° and x = 90° is 0.<br><br> True<br><br> False

Lyrx [107]

We know, Tanx = sinx / cosx
Tan 90 = sin90 / cos 90
Tan 90 = 1/0

As zero is in the denominator, it can't be defined.

In short, Your Answer would be: "False"

Hope this helps!

5 0

4 years ago

What is the domain of the graph?

maksim [4K]

Domain:
-4 ≤ x ≤ 3
or in different form:
x ∈ [-4; 3]

4 0

3 years ago

In a journey of 15 miles, two third distance was travelled with 40 mph and remaining with 60 mph. How much time does the journey

Ad libitum [116K]

The first step in solving this question is to split the journey into 2 parts. In the first part of the journey, $\frac{2}{3} \times 15 = 10$ miles are covered at a speed of 40 mph. In the second part the journey 5 miles are covered at a speed of 60 mph.

The equation to compute the time of a journey given the speed and distance is $t=\frac{d}{s}$ where $t$ is the time, $s$ is the speed and $d$ is the distance.

The time for the first part of the journey is calculated as shown below,

$t=\frac{d}{t} \\t=\frac{10m}{40mph} =\frac{10}{40} h$ .

The time for the second part of the journey is calculated as follows,

$t=\frac{d}{t} \\t=\frac{5m}{60mph} =\frac{5}{60} h$ .

The total time is the sum of the times taken to cover each part of the journey and is calculated as shown below,

$t=\frac{10}{40} h+\frac{5}{60} =\frac{30+10}{120} h=\frac{40}{120}h =\frac{1}{3} h$

The time to cover the journey is a third of an hour or 20 minutes.

5 0

3 years ago

Which process was used to obtain the equation shown in Step 2?

balu736 [363]

To equal the step 2, we would have to determine that 20 was our new denominator and multiply the first fraction by 5, the second by 4 and the 2 by 20.

multiplied by sides of the equation by 20

7 0

3 years ago