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3 years ago

Someone KEEPS answering my questions and THERE ANSWERS ARE RIGHT. AHH HOW? srlt2 you smart. Anyways does anyone wanna help me

Mathematics

1 answer:

vekshin13 years ago

7 0

Answer:

lol, hello again!

SA = 456 cm²

Step-by-step explanation:

small rectangle SA: 6*4 + 6*8 + 6*4 + 6*8 + 4*8 = 176

large rectangle SA: 2*14 + 2*8 + 2*14 + 2*8 + 8*14 + (8*14 - 8*4) = 280

Total SA = 176 + 280 = 456

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What are the length and width of the rectangle?<br> (picture included)

Marianna [84]

Answer:

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Step-by-step explanation:

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2 years ago

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

denpristay [2]

Answer: 4x² + 3x + 52

Step-by-step explanation:

1. rearrange & simplify terms:

(4x² - 4 + 6) + (3x - 7² + 1) . . .

(4x² + 2) + (3x + 49 + 1) . . .

(4x²+2) + (3x + 50).

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3 years ago

Could someone help and tell me how you got the answer? Will mark brainlist!

zheka24 [161]

Subtract 2 numbers then subtract it with 180 (sorry if you get it wrong)

8 0

3 years ago

Read 2 more answers

Find the length of side x in simplest radical form with a rational denominator.

IRINA_888 [86]

Answer: 10√3 / 3

Step-by-step explanation:

cos 30 = 5 / x

x = 5 / cos 30

= 5 / √3 / 2

= 10 √3

= 10√3 / 3

7 0

3 years ago

in a survey of 3271 adults aged 57 through 85 years, it was found that 88.7% of them used at least one prescribed medication

mixer [17]

How many of the 3271 subjects used at least one prescription medication? Round to the nearest integer asneeded.)

Answer:

2902

Step-by-step explanation:

Let the total number of adults within the mentioned age bracket be n=3271

The proportion of adults who used at least one prescription medication be p=88.7%=0.887

The point estimate of population is given by

$p=\frac {x}{n}$ where x is number of individuals in the sample with the specified characteristics and n is the sample size.

Let x be the adults who used at least one prescription medication

$0.887=\frac {x}{3271}$

$x=3271*0.887=2901.377\approx 2902$

3 0

3 years ago