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2 years ago

Choose the graph of the linear equation 30x+75y=300

Mathematics

1 answer:

vivado [14]2 years ago

4 0

Answer:

there ya go :)

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12) If the square root of 2 is 1.41 then find the square root of 50?

OleMash [197]

Answer:

7.05

Step-by-step explanation:

sqrt(50) = sqrt(25 * 2) = sqrt(25) * sqrt(2) = 5sqrt(2) = 5 * 1.41 = 7.05

3 0

3 years ago

Read 2 more answers

Ships A and B are 1,425 feet apart and detect a submarine below them. The angle of depression from ship A to the submarine is 59

andreyandreev [35.5K]

Answer: The distance from ship B to the submarine is 1270.68 feet and the distance from ship A to the submarine is 1084.18 feet.

Step-by-step explanation:

Since we have given that

Distance between Ships A and B = 1425 feet

Angle of depression from ship A to the submarine =59°

Angle of depression from ship B to the submarine = 47°

As shown in the figure below:

Remaining angle will be

$180\textdegree-(47\textdegree+59\textdegree)\\\\=180\textdegree-106\textdegree\\\\=74\textdegree$

So, we will use "Sine formula ":

$\frac{\sin 74\textdegree}{1425}=\frac{\sin 59\textdegree}{B}\\\\B=\frac{1425\times \sin 59\textdegree}{\sin 74\textdegree}\\\\B=1270.68\ feet$

Similarly,

$\frac{\sin 74\textdegree}{1425}=\frac{\sin 47\textdegree}{A}\\\\A=\frac{1425\times \sin 47\textdegree}{\sin 74\textdegree}\\\\A=1084.18\ feet$

Hence, the distance from ship B to the submarine is 1270.68 feet and the distance from ship A to the submarine is 1084.18 feet.

4 0

3 years ago

Read 2 more answers

the sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find

Allushta [10]

Answer: 1st train = 364 mph, 2nd train = 356.2

Step-by-step explanation:

Train 1: x + 7.8

Train 2: x

Train 1 + Train 2 = Sum

x + 7.8 + x = 720.2

7.8 + 2x = 720.2

2x = 712.4

x = 356.2

Train 1: x + 7.8

= 356.2 + 7.8

= 364

6 0

3 years ago

5x^2 - 6x - 28 = 0<br> please help me do this

Yanka [14]

Answer:

x= 3 5 + 1 5 √149 or x= 3 5 + −1 5 √149

4 0

3 years ago

A line passes through the points (3,18) and (6,21). Write an linear function rule in terms of x and y for this line.

statuscvo [17]

Slope is rise over run so

(21-18)/(6-3), 3/3=1, slope is 1

plug in to find b value

18=3+b, b=15

ANSWER: y=x+15

3 0

2 years ago