MATHEMATICS MIDDLE SCHOOL

After traveling steadily at 400 meters above a shipwrecked hull, a submerged vessel starts to descend when its ground distance from the hull is 7 kilometers. What is the angle of depression for this part of the travel?
Select one
O a 1.00
6.327
C 86.73
d. 88.00

Answers

Answer 1
Answer:

Answer:

Option B,

Step-by-step explanation:

Given -

The submerged vessel travel horizontal distance above the shipwrecked hull

kilometers

The vertical distance from the the shipwrecked hull to the ground is equal to kilometers

There forms a right angled triangle with

Base kilometer

Perpendicular 0.4 kilometer

Tan (angle)

Substituting the given values we get -

Angle of depression

Hence, option B is correct.

Answer 2
Answer:

Answer:

im trying to find this answer too dont worry :(

Step-by-step explanation:

I dont know


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MIDDLE SCHOOL

ginny has two vegetable gardens. in the first garden ginny grows tomatoes every 2 years. in the second garden ginny grows tomatoes every 3 years. this year ginny grows tomatoes in both gardens. in how many years will she grow tomatoes in both gardens again?

Answers

Ginny will take 5 years to replant
MIDDLE SCHOOL

If ABCD is an isosceles trapezoid what is the value of X ac=7x-21 and bd=5x+13

Answers

The value of x is equal to 17 in an isosceles triangle.

What is an isosceles trapezoid?

A trapezoid that has non-parallel sides and base angles of the same size is said to be isosceles.

An isosceles trapezoid has a pair of parallel sides.

∴  AB∥CD

Its non-parallel sides are equal.

∴  AD=BC

Diagonals of an isosceles trapezoid are equal.

⇒ AC=BD

7x -21 = 5x + 13

7x - 5x = 21 + 13

2x = 34

x = 17

Therefore, the value of x is equal to 17.

To know more about the isosceles trapezoid follow

brainly.com/question/8644421

#SPJ2

7x - 21 = 5x + 13

2x = 34

x = 17

Hope this helps!


MIDDLE SCHOOL

6.6666 rounded to the thousandths

Answers

The answer is 6.67 hope this helps :D
6.6666 rounded to thousandths is 6.667.
HIGH SCHOOL

To solve the inequality -1/4x>-2, Chrissy thinks she should add 1/4 to both sides. What is wrong with her first step? A. Nothing is wrong; her first step is correct.
B. She needs to subtract 1/4 from both sides instead.
C. She needs to multiply both sides by -1/4 instead.
D. She needs to multiply both sides by –4 instead.

Answers

Answer D because you want to get the x by itself and in order to do this she needs to multiply by -4 so that one side only has x.
HIGH SCHOOL

Expand (2x-3y)^4 using Pascal's Triangle. Show work

Answers

(2x+3y)⁴
1) let 2x = a   and 3y = b

(a+b)⁴ = a⁴ + a³b + a²b² + ab³ + b⁴
Now let's find the coefficient of each factor using Pascal Triangle
     
                     0     |               1
                     1     |            1    1
                     2     |          1   2   1
                     3     |         1  3   3   1
                     4     |       1  4   6    4  1

0,1,2,3,4,.. represent the exponents of binomials 
Since our binomial has a 4th exponents, the coefficients are respectively:

(1)a⁴ + (4)a³b + (6)a²b² + (4)ab³ + (1)b⁴
Now replace a and b by their real values in (1):

2⁴x⁴ +(4)8x³(3y) + (6)(2²x²)(3²y²) + (4)(2x)(3³y³) + (1)(3⁴)(y⁴)

16x⁴ + 96x³y + 216x²y² + 216xy³ + 81y⁴

Answer:

16x^4 - 96x^3y + 216x^2y^2 - 216xy^3 + 81y^4

Step-by-step explanation:

(2x - 3y)^4

Fifth line on a Pascal Triangle

1, 4, 6 4, 1

(1) 2x^4

2^4 = 16

2x^4 = 16x^4

16x^4

(4) 2x^3 (-3y)^1

2^3 = 8

-3^1 = -3

8 times -3 times 4 = -96

-96x^3y

(6) 2x^2 (-3y)^2

2^2 = 4

-3^2 = 9

4 times 9 times 6 = 216

216x^2y^2

(4) 2x^1 (-3y)^3

2^1 = 2

-3^3 = -27

2 times - 27 times 4 = -216

-216xy^3

(1) (-3y)^4

-3^4 = 81

81y^4

16x^4 - 96x^3y + 216x^2y^2 - 216xy^3 + 81y^4

MIDDLE SCHOOL

What is 5x23x2 solve with properties

Answers

I think 5x23x2=23x5x2=23x10=230 the property is the associativity

MIDDLE SCHOOL

At the amusement park, Laura paid $6.00 for a small cotton candy. Her older brother works at the park, and he told her they mark up the cotton candy by 300%. Laura does not think that is mathematically possible. Is it possible, and if so, what is the price of the cotton candy before the markup?

Answers

Sure it's possible... set up the problem by thinking 6 dollars is 300% of what number.

6 = 300% × x
6 = 3.00x
6/3 = x
2 = x

Before the markup the cotton candy costs $2.00


HIGH SCHOOL

If three pens cost $5.67, the cost of one pen is $

Answers

$5.67 decided by 3 = $1.89

Answer:

$5.67 decided by 3 = $1.89


Step-by-step explanation:


MIDDLE SCHOOL

What is the solution of the equation 4.6+1.2x=54.6+0.8x

Answers

Answer:X=125 ,Move variable to the left by adding its opposite to both sides and then Eliminate the opposites. Your welcome

Answer:

x=136.5

Step-by-step explanation:

4.6+1.2x=54.6+0.8x

     -0.8x          -0.8x

4.6+0.4x=54.6

-4.6           -4.6

0.4x=50

x=136.5

I hope I gave you the answer you wanted! :)

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