MATHEMATICS MIDDLE SCHOOL

Can anyone simplify this? (Apparently using the distributive property.)
-3(-5v-u+6)

Answers

Answer 1
Answer:

Hey there!

-3(-5v - u + 6)

= -3(-5v) - 3(-u) - 3(6)

= 15v - 3u - 18

= 3u + 15v - 18

Therefore, your answer is: 3u + 15v - 18

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)
Answer 2
Answer: I could be wrong however, I'm sure it's: -3x-5= 15v (two negatives become a positive. -3-u becomes 3u. (Two negatives also become a positive), and -3+6 is -3x6= -18. Hence, the answer is: 15v+3u-18.

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I now the shape for not cubes i need explain

Answers

Answer:

The bottom right, middle top, and bottom left are NOT cubes.

Step-by-step explanation:

Cubes are defined as a three dimensional object with the same length, width, and height. Since the square on the bottom left is two dimensional, It is not a cube. Since the hexagon on the bottom right is two dimensional, It can't be a cube. The Middle top shape doesn't have the same length height as it's width is, so it is not a cube. The rest are cubes.

Answer: Circle 1st, 2nd, 4th, and 6th

Step-by-step explanation:

A cube is 4 perfect squares in a 3-D shape. Only shape 3 and 5 show this.

An airplane flies due North at 100mph through a 30mph cross wind blowing from S80E. Determine the resultant velocity and direction of the airplane

Answers

We want to get the resultant velocity and direction of an airplane given that we know the velocity of the airplane and the velocity of the wind.

We will get that the velocity is 70.7 mph and the direction is 85.8° north of east.

First, let's define north as the positive y-axis and east as the positive x-axis.

The airplane flies due north at 100mph, then the velocity of the airplane alone is:

V = (0mph, 100 mph)

The wind's velocity has a magnitude of 30mph at 80° south from east (or an angle of -80° in a general coordinate axis) then the components are:

  • x-component = 30mph*cos(-80°) = 5.2 mph
  • y-component = 30mph*sin(-80°) = -29.5 mph

Then the vector is:

V' = (5.2mph, -29.5 mph)

The resultant velocity is just the sum of these two vectors, so we have:

resultant velocity = (0mph, 100 mph) + (5.2mph, -29.5 mph)

                              = (5.2 mph, 70.5 mph)

The magnitude is:

M = √( (5.2 mph)^2 + ( 70.5 mph)^2) = 70.7 mph

And the direction is given by:

θ = Atan(70.5 mph/5.2 mph) =  85.8°

Meaning that the direction is 85.8° north of east.

If you want to learn more, you can read:

brainly.com/question/1886551

Answer:

velocity of the airiplaine is 104 m/s ( 73 degrees N of W)

Step-by-step explanation:

Find the value of d so the line that passes through (a,b) and (c,d) has a slope of 1/2.

Answers


I'm guessing that in the book or the homework sheet, they gave you
the values of 'a', 'b', and 'c', and you're supposed to find the value of 'd'.

If you have two points on the line, then the slope of the line is

                       (the change in 'y') divided by (the change in 'x') .

If the two points are (a, b) and (c, d), then the slope of the line is

                       (d - b) divided by (c - a) ,

and you have to find the value of 'd' that makes that whole expression
equal to 1/2.

                                      (d - b) / (c - a) = 1/2

Multiply each side by  (c - a):     (d - b) = 1/2(c - a)

Add 'b' to each side:                    d        =  1/2(c - a)  +  b

If you know the values of 'a', 'b', and 'c', you can find the value of 'd'.

Which table shows the correct values of time and distance for a car traveling at a constant speed of 65 miles per hour?

Answers

Answer:

its A

Step-by-step explanation:
We can not see the tables to help you out, try asking it again with images of the tables inserted!

If you answered 37 problems correctly on a 42 question test, what percent would you recieve

Answers

The fraction would be 37 out of 42. You basically divide the two and get something around 88%.

Final answer:

On a test with 42 questions, answering 37 correctly yields a score of approximately 88 percent. This result is obtained by dividing the number of correctly answered questions by the total number of questions, and then multiplying that result by 100 to find the percent.

Explanation:

The subject for this problem is percentages, a common topic in mathematics. To solve this, you need to relate the number of correct answers to the total number of questions. The formula for percent is (part / total) * 100, where the part is the number of problems you answered correctly (37), and total is the overall number of questions on the test (42).

In this case, you'd calculate (37 / 42) * 100, which equals approximately 88.09%. Therefore, if you answered correctly on 37 out of 42 questions, your score would be about 88 percent.

Learn more about percentages here:

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#SPJ2

Four balls of wool will make 8 knitted caps. How many balls of wool will malson need if he want to make 6 caps

Answers

Well, it takes one ball of wool to make 2 knitted caps. So it will take 3 balls of wool to make 6.

since there are 4 wool balls that make 8 caps the ratio is 4:8 or 1:2 ...every ball makes 2 caps there fore your answer is 3 balls of wool will make 6 caps
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