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lapo4ka [179]
3 years ago
5

The perimeter is about WHAT HELP!?

Mathematics
1 answer:
Pani-rosa [81]3 years ago
4 0
Perimeter is the length of all sides added

2.82+2.82+5+5+4=19.64

So I would say a good estimate would be 20 units
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Please help me solve both these math problems #'s 4 and 5 just put the letter, Also the question is in the attachtment!
kogti [31]

Answer:

4.A

5.c

Step-by-step explanation:

4.112+x=180

x=180-112=68

A

5.

7x+3x-30=90

10x=90+30

10 x=120

x=12

c

5 0
3 years ago
ASAP HELP WITHIN 5 MINUTES PLEASE
larisa [96]

Answer:

1050 not 100% sure tho


4 0
3 years ago
20 points
blsea [12.9K]
The answer I think is 2+7+0.15x_>15
6 0
3 years ago
Read 2 more answers
The table shows the battery life of four different mobile phones:
tekilochka [14]
Answer: Phone C

Using quick mental math, we can do 8% of 10 to get 0.8, which is close to the value of 0.0845*10. Also fairly quick is moving the decimal point over 1 spot to the right and we go from 0.0845 to 0.845 and that rounds to 0.8 when rounding to one decimal place. Recall that 8.45% = (8.45/100) = 0.0845

If you want to compute out the four results with a calculator, then it would look like this:
0.0845*20 = 1.69
0.0845*25 = 2.1125
0.0845*10 = 0.845
0.0845*18 = 1.521
and this shows that no other result (but choice C) is close to 0.8

So that's why the answer is choice C
5 0
2 years ago
Read 2 more answers
Use the Perfect Square Trinomial and provide the first step to calculating 382 without a calculator.
dusya [7]

Answer:

(40-2)^2

Step-by-step explanation:

Given: (38)^2

To find: the correct option

Solution:

A binomial polynomial is a polynomial consisting of two terms.

A trinomial polynomial is a polynomial consisting of three terms.

On multiplying a binomial (x-y) to itself, a perfect square trinomial (x-y)^2 is obtained.

Here, 38=40-2

So, (38)^2=(38)(38)=(40-2)(40-2)=(40-2)^2

Here, (40-2) is a binomial and it is multiplied to (40-2) to get a perfect square trinomial (40-2)^2

7 0
3 years ago
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