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3 years ago

Can someone help me. I need to show the box method also can someone show me.

Mathematics

1 answer:

sveta [45]3 years ago

4 0

there's a 3 on the left of the box it got cut out. you jus multiply 3 by 6000, 200, 50, nd 3,, n then add the numbers tht you get in the boxes and if you see my bad handwriting, no you didnt

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Make a the subject of the formula<br> V= u+ at

aniked [119]

V=u + at
V - u = at divide both sides by
t
(V-u)/t =a
a = (v - u) /t

6 0

2 years ago

What are the solutions to 16x^2-12x=54? Select all the apply.

lesya692 [45]

Answer:

-3/2 or 9/4

Step-by-step explanation:

16x^2 - 12x = 54

Now, we take 54 to the left side. It leads the right side to become "0". As 54 is a positive, it will negative as we change the side.

16x^2 - 12x - 54 = 0

Dividing both the sides by 2, we get,

8x^2 - 6x - 27 = 0

Now, we use factorization method,

8x^2 + 12x - 18x - 27 = 0

or, 4x (2x + 3) - 9 (2x + 3) = 0

or, (2x + 3) (4x - 9) = 0

Now, 2x + 3 = 0; or, 4x - 9 = 0

2x = - 3; or, 4x = 9 (changing the sides)

or, x = - (3÷2); or, x = (9÷4)

Therefore, the solution set for x is either - 3/2 or 9/4

4 0

4 years ago

If I have a line that starts at the origin (0,0), and goes 13 meters at an angle of π/6 in the standard position (ie. 30° north

Klio2033 [76]

Line goes 11.2583303 meters in the x direction (east) and 7.5 meters in the y direction (north) .

<u>Step-by-step explanation:</u>

Here we have , If I have a line that starts at the origin (0,0), and goes 13 meters at an angle of π/6 in the standard position (i.e. 30° north of east) . We need yo find how far does it go in the y direction (north), and how far does it go in the x direction (east). Let's find out:

According to question we have a right angle triangle as :

$Hypotenuse =13m\\x=\frac{\pi}{6} =30$

x direction (east)

We know that ,

⇒ $cosx = \frac{Base}{Hypotenuse}$

⇒ $cos30 = \frac{Base}{13}$

⇒ $\frac{\sqrt{3} }{2} = \frac{Base}{13}$

⇒ $Base=\frac{\sqrt{3}(13) }{2} m$

⇒ $Base=11.2583303m$

y direction (North )

We know that ,

⇒ $sinx = \frac{Perpendicular}{Hypotenuse}$

⇒ $sin30 = \frac{Perpendicular}{13}$

⇒ $\frac{1}{2} = \frac{Perpendicular}{13}$

⇒ $Perpendicular=7.5m$

Therefore , Line goes 11.2583303 meters in the x direction (east) and 7.5 meters in the y direction (north) .

8 0

4 years ago

Which of the following statements are true about the

Salsk061 [2.6K]

Answer:

w and x are adjacent

w and z are supplementary

y and z are supplementary

x and z are vertical angles

Step-by-step explanation:

3 0

2 years ago

Ms. miller decides to give a test worth 90 points and contains 25 questions. multiple-choice questions are worth 3 points and wo

schepotkina [342]

X= # of multiple choice questions
y= # of word problem questions

EQUATION 1:
x + y= 25

EQUATION 2:
3x + 4y= 90

STEP 1:
solve for one variable in equation 1

x + y= 25
subtract y from both sides
x= 25 - y

STEP 2:
substitute x=25-y in equation 2

3x + 4y= 90
3(25-y) + 4y= 90
75 - 3y + 4y= 90
75 + y= 90
subtract 75 from both sides
y= 15 word problems

STEP 3:
substitute y value to find x

x + y= 25
x + 15= 25
x= 10 multiple choice questions

ANSWER: There are 15 word problems and 10 multiple choice questions.

Hope this helps! :)

5 0

3 years ago

Read 2 more answers