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morpeh [17]
3 years ago
9

I don't get this. can someone help me. I have a whole packet of this.

Mathematics
1 answer:
Harrizon [31]3 years ago
7 0
For #2, ∠3 and ∠1 are supplementary. You know that the measure of ∠1 is 162°, so what is ∠3? 180-162=18.
m∠3=18° if ∠1=162°.
Hope this helped!
You might be interested in
The width of a rectangle is 3x – 3. Its perimeter is 10x + 6. Find the length of the rectangle.
maks197457 [2]

Step-by-step explanation:

The first possibility

2(width) + 2(length) = perimeter

2(3x-3) + 2(length) = 10x+6

6x - 6 + 2(length) = 10x+6

2(length) = 4x + 12

length = 2x + 6

The second possibility.

rondhesha chodado in The width of a rectangle is 3x – 3. Its perimeter is 10x + 6. Find the length of the rectangle.

So you have the perimeter, P, can be found by doing u+u+v+v.

Simplifying gives:

P=2u+2v.

You are given the width is (3x-3).  Choose this to be u or v but not both.

Perimeter is given a (10x+6).

Let's plug this in:

(10x+6)=2(3x-3)+2v

We are solving for v.

First step: Distribute where you can:

10x+6=6x-6+2v

Now we want to isolate v.

So we will need to subtract (6v-6) on both sides:

 (10x+6)=2v

- (6x -6)

----------------------

4x+12  =2v

The right hand side contains a factor of 2.

The left hand side does too since 4x+12 can be factored as 2(2x+6).

2(2x+6)=2v

This implies v is 2x+6.

Let's check our work.

We have two sides with measurement 2x+6:  (2x+6)+(2x+6)=4x+12

We have two sides with measurement 3x-3:   (3x-3)+(3x-3)=  6x-6

Let's add those sums to find the perimeter:                             10x+6

That is the intended 

3 0
2 years ago
A 9 foot tall tree casts a 5 foot shadow . At the same time a house casts a 28 foot shadow. How tall is the house?
ruslelena [56]

Answer:

33

Step-by-step explanation:

it is 33 if you get it wrong than dab

3 0
2 years ago
. Caroline had 400 stamps in her collection. 1 10 th of them were Indian stamps, Onethird of the remaining stamps were from Euro
Ganezh [65]

Answer:

So 400 stamps

African---> 100

Indian------> 1/10 x 400

= 40

European---> 400-40=360

1/3 x 360

= 120

so 120+40+100= 260

400-260

= 140 stams from US

6 0
3 years ago
Please help me i will give brainliest!
omeli [17]

Answer:

10

Step-by-step explanation:

1x2x2.5=5

5/0.5=10

6 0
3 years ago
Read 2 more answers
If cells are: a1=90, a2=85, a3=80, a4=75, and a5=75. what will be your formula if you are going to get the average?
swat32
The average can be given by the following formula:
 Average = (a1 + a2 + a3 + a4 + a5) / (5).
 Equivalently.
 Average = (ai) / (i).
 Where,
 i = 1,2,3,4, ..., n
 Substituting
 Average = (90 + 85 + 80 + 75 + 75) / (5).
 Average = 81
 answer:
 Average = (a1 + a2 + a3 + a4 + a5) / (5).
 or
 Average = (ai) / (i).
 Where,
 i = 1,2,3,4, ..., n
8 0
3 years ago
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