All categories

3 years ago

Please help I don't know how to do this

Mathematics

2 answers:

Marta_Voda [28]3 years ago

7 0

First fine the dialation divide 6 by 4 you get 1.5 so the dialation of these shapes is 1.5 now you just simply find the measurments.... 9 divided by 1.5 is 6 so BC is 6. now 7*1.5 is 10.5 so QR is 10.5 now the angles never change in a dialation so <P= 86*.
Hope this helped you!!! have an amazing day!

mario62 [17]3 years ago

6 0

All you do is find the scale factor and go from there so
AB and side QP are similar so the scale factor is 1.5
In order to find QR just multiply 7*1.5=10.5
Then to find BC you just do just multiply it by 2/3*9=6
The angle is 86 degrees

You might be interested in

Please help asap :( This is my "Final grade" My Teacher wants a full explanation included ! on how i got the answer. )

Mrac [35]

If the whole diameter of sphere is 6 inch(means radius is 3 inch) & thickness of material is 1 inch, so the radius of the hollow part should be 2 inch (3-1=2)

The total volume of the ball will be;

= Total volume - Volume of hollow part

= 4/3πr³ - 4/3πr³

= 4/3 × 3.14 × (3)³ - 4/3×3.14×(2)³

= 4 × 3.14 × 9 - 4/3 × 3.14 × 8

= 113.04 - 33.52

= 79.52

If the density of the material is 3.25 g/in3, then the density of 79.52 inch³ should be;

= 79.52 × 3.25

= 258.44 g

Now, if there are 8 spheres in one box, the weight if box will be;

= 258.44 × 8

= 2,067.52 g

_____________________________

Ahh! Finally done with this, if you have any doubt just do ask me :)

3 0

3 years ago

Which system of linear inequalities is represented by the graph?

Zarrin [17]

Answer:

The linear inequality is represented by y < x _ 2 and y > x + 1

6 0

2 years ago

Read 2 more answers

Arrange the given steps in the correct order to find A and B if A and B are two sets where A – B = {1, 5, 7, 8}, B – A = {2, 10}

GarryVolchara [31]

Answer:

A = {1, 3, 5, 6, 7, 8, 9}

B = {2, 3, 6, 9, 10}

Step-by-step explanation:

Here as given in the question:

A – B = {1, 5, 7, 8} ⇒ {1, 5, 7, 8} is in A not in B.

B – A = {2, 10} ⇒ {2, 10} is in B not in A

A ∩ B = {3, 6, 9} ⇒ {3, 6, 9} is BOTH in A and B.

Step 1:

Set A can also be expressed as : A = (A - B) ∪ (A ∩ B)

Set A can also be expressed as : B = (B - A) ∪ (A ∩ B)

Step 2:

Substituting the values of (A - B) and (B - A)

A = {1, 5, 7, 8} ∪ {3, 6, 9}

B = {2, 10} ∪ {3, 6, 9}.

Step 3:

Finding the UNION of the above two sets, we get:

A = {1, 3, 5, 6, 7, 8, 9}

B = {2, 3, 6, 9, 10}

5 0

3 years ago

Two more than negative nine times a number is 56. Find the number and write its equation!

taurus [48]

2 + -9n = 56. -9n = 54. N = -6

3 0

3 years ago

The perimeter of a rectangle is 160 meters. The length is 20 meters greater than the width. Find the dimensions of the rectangle

s344n2d4d5 [400]

<h2><em>Width=w </em></h2><h2><em>Length=l </em></h2><h2><em>Perimeter=p </em></h2><h2><em> </em></h2><h2><em>p=2w+2l </em></h2><h2><em>l=20+w </em></h2><h2><em>p=2w+20+w+20+w </em></h2><h2><em>p=4w+40 </em></h2><h2><em> </em></h2><h2><em>4w+40=160 </em></h2><h2><em>4w=160-40=120 </em></h2><h2><em>w=120:4=30 </em></h2><h2><em>w=30 </em></h2><h2><em>l=20+w </em></h2><h2><em>l=20+30=50</em></h2>

4 0

3 years ago