a submarine at the water's surface dropped down 100 ft after thirty minutes at that depth it dove an additional 500 ft what was its depth after the second dive

Answers

Answer 1

Answer: 600 ft I think that would be the answer

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Which function's graph has a y-intercept of 2? A. f(x) = 3x + 2 B. f(x) = 0.5(2)* + 1.5 C. f(x) = 0.5(2)* + 1 O D. f(x) = 1.5(2)
The dot plot below shows the hourly rate of some babysitters:Based on the data shown, how many babysitters surveyed earned $5 or less per hour?

2 pens costs £0.30.
How much would 4 pens cost?

Answers

Answer:

cost of 4 pen is £0.6

Step-by-step explanation:

cost of 2 pen *2= cost of 4 pen

£0.30*2=cost of 4 pen

£0.60=cost of 4 pen

for my hardwork make me barinliest answer

a square with an area of 25 in.^2 is plotted on a grid so that the bottom-left corner is at the origin. The side of the square are horizontal and vertical. A reflection over what line maps the square onto itself?

Answers

Answer:

Reflection about the vertical line x = 2.5 inches will map the square unto itself

Step-by-step explanation:

The given parameters are;

The area of the square = 25 in²

The orientation of the sides of the square are horizontal and vertical

Therefore, we have;

The area, A, of the square given by the following relation;

A = Side²

A = 25 in²

Therefore;

The area of the square = 25 = side²

The length of the sides of the square = √A = √25 = 5

The length of the sides of the square = 5 inches

The reflection of a figure that maps the figure unto itself is a reflection along the line of symmetry

One of the line of symmetry that divides the square into two similar halves is the vertical straight that passes half way through the horizontal side, which is the point 2.5 inches to the right on the x-axis with the coordinates (2.5, 0)

Therefore, reflection about the line x = 2.5 inches will map the square unto itself.

A rain gutter is to be constructed of aluminum sheets 12 inches wide. After marking off a length of 4 inches from each edge, this length is bent up at an angle θ. The area A of the opening may be expressed as the function: A(θ) = 16 sin θ ⋅ (cos θ + 1). If θ = 60°, what is the area of the opening?

Answers

A(45degrees) = 16sin(45)(cos(45)+ 1)
= 16(1/sqrt2)(1+1/sqrt2)
= 16(1/sqrt2)(1+ sqrt2) /sqrt2
= 16(1+sqrt2) /2
= 8 + (sqrt2)/2in^2

-9(m + 2) + 4(6 – 7m)

Answers

I think it is -37m+17 but I am not sure

A salad dressing calls for 3 parts oil and 1 part vinegar. Manuela uses 2 tablespoons of vinegar and 6 tablespoons of oil to make her salad dressing. Is this a proportional relationship

Answers

Answer:To determine if the relationship between the amount of vinegar and oil in the salad dressing is proportional, you can compare the ratio of vinegar to oil used by Manuela to the ratio called for in the recipe.

The recipe calls for 3 parts oil to 1 part vinegar. This means for every 3 tablespoons of oil, you should use 1 tablespoon of vinegar.

Manuela used 6 tablespoons of oil and 2 tablespoons of vinegar.

Now, let's compare the ratios:

Manuela's ratio of oil to vinegar: 6 tablespoons of oil to 2 tablespoons of vinegar, which can be simplified to 3:1.

The recipe's ratio of oil to vinegar: 3 parts oil to 1 part vinegar, which is also 3:1.

Since both ratios are 3:1, Manuela's use of oil and vinegar is in proportion to the recipe's instructions. Therefore, it is a proportional relationship.

A bus travels through the city and stops every mile. The first stop on the route is the 8th Avenue Coffee Shop, which is located 15 blocks east and 22 blocks north of the central station. The last stop on the route is the airport, which is located 25 blocks west and 36 blocks south of the central station. A student calculated the middle stop along the bus route to be located 20 blocks east and 29 blocks north of the central station. Evaluate the student’s answer.

Answers

Answer:Student calculation is incorrect

Step-by-step explanation :

Given the First stop is the 8th Avenue Coffee Shop, which is located 15 Blocks east and 22 blocks north of the central station

and the last stop on the route is 25 blocks west and 36 blocks south of the central station .

Lets take the First stop co-ordinates be (15,22)

and last stop co-ordinates (-25,-30)

So there mid-point is $x=(x_1+x_2)/(2)$

$y=(y_1+y_2)/(2)$

$x=(15-25)/(2)=-5$

$y=(22-30)/(2)=-4$

Therefore middle stop is 5 blocks west and 4 blocks South

Thus calculated the middle stop incorrectly.

The student apparently added numbers without taking into account direction. They seem to have added 15 and 25 and divided by 2 to get the horizontal component of the middle stop when they should have added 15 and -25 and divided by 2. A similar mistake was made on determining the vertical component. The middle stop should have been calculated as 5 blocks west and 7 blocks south of the central station. So your answer is C.

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