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3 years ago

Solve the system of equations using addition.

Mathematics

1 answer:

lutik1710 [3]3 years ago

4 0

Answer:

A. (-3,-6)

Step-by-step explanation:

The explanation is in the pictures.

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Laura is training to run a race. She keeps track of the number of miles she runs. She has been training for 5 weeks, and she has

V125BC [204]

Answer:

8 miles per week!

Step-by-step explanation:

40 miles / 5 weeks = 8!

so it would be 8 miles per week.

i hope this helps!!

4 0

2 years ago

two ships leave a port at the same time. the first ship sails on a bearing of 55° at 12 knots (natural miles per hour) and the s

Korvikt [17]

Answer:

37.59 nautical miles

Explanation:

Distance = Speed x Time

The speed of the first ship = 12 knots

Thus, the distance covered after 1.5 hours

$\begin{gathered} =12\times1.5 \\ =18\text{ miles} \end{gathered}$

The speed of the second ship = 22 knots

Thus, the distance covered after 1.5 hours

$\begin{gathered} =22\times1.5 \\ =33\text{ miles} \end{gathered}$

The diagram representing the ship's path is drawn and attached below:

The angle at port = 90 degrees.

The triangle is a right triangle.

Using Pythagorean Theorem:

$\begin{gathered} c^2=a^2+b^2 \\ c^2=18^2+33^2 \\ c^2=324+1089 \\ c^2=1413 \\ c=\sqrt[]{1413} \\ c=37.59\text{ miles} \end{gathered}$

The two ships are 37.59 nautical miles apart after 1.5 hours.

8 0

1 year ago

Find the 22nd term of the arithmetic sequence whose common difference is d =3 and whose first term is a_1=-20

Ivenika [448]

1,4,7,10,13,16,19,22,25,28,31,34,37,40,43,46,49,52,55,58,61,64,67,70,73,76,79,82,85,88,91,94,97,100

f(n) = 1 + 3(n-1) = 1 + 3n - 3 = 3n -2

f(22) = 3(22)-2 = 66-2 = 64

4 0

3 years ago

A taxi service charges you $1.50 plus $0.60 per minute for a trip to the airport. The distance to the airport is 10 miles, and t

Ilia_Sergeevich [38]

I think it took a hour to get to the airport

4 0

3 years ago

What is the relationship between 5.39×10^2 and 5.39×10^−2?

bagirrra123 [75]

Answer:

5.39×10^2 is 10.000 times greater than 5.39×10^−2.

Step-by-step explanation:

Dividing:

5.39×10^2 / 5.39×10^−2

= 5.39/5.39 x (10^2 / 10^-2

= 1 x 10^(2 - (-2))

= 10^4

= 10,000.

3 0

3 years ago