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alisha [4.7K]
3 years ago
8

2. Decide which estimate is closest to the actual answer. Explain your reasoning.

Mathematics
2 answers:
sashaice [31]3 years ago
6 0
Question A 
take $100.80 divide it by 35 which would equal 2.88 
so round that up for 3.0 for the closest answer

Question B 
take 49.2 and divide it by 6 which would equal 8.2
so round it to the nearest number which would be 8.0

Question C
take 0.78 and divide it by 20L which would equal 0.039
so round that up to the closest number which would be 0.04L
DIA [1.3K]3 years ago
4 0

Answer:


A) The closest answer would be 3. This is true because you can round 100.80 to 100, then divide that by 40, which will get you 2.5, the closest answer to this is 3.0, or option 3.

B) The closest answer would be 8. This is true because you can round 49.2 to 50, then divide that by 10 (the number you get after rounding 6 up), which will get you 5, which is closest to 8.0, or option 2.

C) The closest answer would be 40. When you divide 100 (you rounded .78 to .100) by 20 (you don’t need to round), you get 0.005, this is closest to 0.04.

Hope this helps Buddy!

(I took the quiz)

Please mark me brainliest!


~Courtney


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the length of a rectangle is 3 feet more than twice the width. if the width is increased by four feet the perimeter of the new r
densk [106]

Answer:

The area of the original rectangle  = 189 sq ft.

Step-by-step explanation:

Let, the width of the rectangle = m feet

So, the length of the rectangle =  (2 m + 3)  ft

Now, new width w'  = (m + 4)

Perimeter of new rectangle (P')   = 68 ft

Perimeter of a rectangle = 2 (LENGTH + WIDTH)

⇒68 ft   = 2( L + W')  

or, 68 ft   = 2 [( 2m + 3) + (m + 4)]

or, 2 (3m + 7)  = 68

or, 3m + 7 = 68/2  = 34

⇒ 3m = 34 - 7 = 27

⇒ m = 27/3 = 9

or, m = 9 ft

Hence, the original width  of the rectangle =  9 ft

Original Length of the rectangle = 2m  + 3  = 2(9) + 3 = 21 ft

Now, Area of the Rectangle = LENGTH X WIDTH

=  21 ft  x  9 ft  = 189 sq ft

Hence,the area of the original rectangle  = 189 sq ft.

5 0
3 years ago
Juan bought a piece of lumberthat is 20 feet long.
Semmy [17]

Answer:mutiply not sure

Step-by-step explanation:

7 0
2 years ago
17. Together, siblings Kathryn, Ryan, Jason, and Pete owe their parents $120. Show how much each sibling owes if they share the
Vladimir [108]

Answer:

30$

Step-by-step explanation:

Divide 120 by 4 and you will get the awnser

6 0
3 years ago
Read 2 more answers
Assume that the readings at freezing on a bundle of thermometers are normally distributed with a mean of 0°C and a standard devi
kolezko [41]

Answer:

0.53347

Step-by-step explanation:

We solve the above question using z score formula

z = (x-μ)/σ, where

x is the raw score = -0.084 °C

μ is the population mean = 0 °C

σ is the population standard deviation = 1°C

Z score =x - μ/σ

= -0.084 - 0/1

= -0.084

Probability value from Z-Table:

P(x<-0.084) = 0.46653

P(x>-0.084) = 1 - P(x<-0.084) = 0.53347

The probability of obtaining a reading greater than -0.084°C = P(x > -0.084) =

is 0.53347

8 0
2 years ago
What is the answer to this?
ra1l [238]

Answer:

<h2>x = 7°</h2><h2>z = 79°</h2>

Step-by-step explanation:

101 = 13x + 10

Minus 10 from both sides:

91 = 13x

Divide by 13:

<h2>7 = x</h2>

Angles of a straight line add up to 180.

101 + z = 180

Rearrange to find z:

z = 180 - 101

<h2>z = 79</h2>
4 0
3 years ago
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