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Papessa [141]
3 years ago
15

Can you please help me I will reward brainliest plz hurry

Mathematics
2 answers:
pshichka [43]3 years ago
8 0
It’s 172m^2
Because the rectangular middle piece is 18 by 8 which equals 144 then you had the smaller pieces with are both 14 and when you had all three you get 172
Mariana [72]3 years ago
4 0

Answer:

172 m^2.

So you already have it on the correct answer.

Step-by-step explanation:

For you to find the surface area, you need to find out the areas of all the different colored sections.

There are 6 sections.

2 green, 2 purple, and 2 red.

Green section: (length x width) 7 x 8 = 56

Purple section: (length x width) 2 x 8 = 16

Red section: ( length x width) 7 x 2 = 14

Total: 56 + 16 +56 + 16 + 14 + 14 = 172 cm².

Feel free to let me know if you need more help. :)

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An experiment involves selecting a random sample of 256 middle managers for study. One item of interest is their annual incomes.
lesantik [10]

Answer:

the standard error is 153.125

Step-by-step explanation:

given that

The random sample is 256

The sample mean is $35,420

And, the standard deviation is $2,450

We need to find out the standard error

We know that

= standard deviation ÷ √random sample

= 2450 ÷ √256

= 2450 ÷ 16

= 153.125

Hence, the standard error is 153.125

7 0
3 years ago
Need number 1 and 2
m_a_m_a [10]
First one is 97
2nd one is 8000
8 0
3 years ago
Find (F/g)(x)<br> F(x) = sqrt x^2-1<br> g(x) sqrt x-1
Margaret [11]

Answer:

Option A. √(x + 1)

Step-by-step explanation:

Data obtained from the question include:

f(x) = √(x² – 1)

g(x) = √(x – 1)

(f/g) (x) =..?

(x² – 1) => difference of two square

(x² – 1) => (x – 1)(x + 1)

f(x) = √(x² – 1)

f(x) = √(x – 1)(x + 1)

(f/g) (x) = f(x) /g(x)

f(x) = √(x – 1)(x + 1)

g(x) = √(x – 1)

(f/g) (x) = √(x – 1)(x + 1) / √(x – 1)

(f/g) (x) = √[(x – 1)(x + 1) / (x – 1)]

(f/g) (x) = √(x + 1)

7 0
3 years ago
Which expression is equivalent to (-3)x+ (-3) (-12)?
julia-pushkina [17]

Answer:

A

Step-by-step explanation:

gimme brainliest

6 0
2 years ago
Ariana starts with 100 mg of a radioactive substance. The amount of the substance decreases by 20% each week for a number of wee
BabaBlast [244]

Answer:

bbbbbb

Step-by-step explanation:

3 0
3 years ago
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